Consulta: subjectFacets:"Mineral nutrition"
Registros recuperados: 137
Data/hora: 10/06/2024 18:24:23

Diferentes frecuencias de aplicación de nutrimentos minerales en el cultivo de papaya maradol bajo condiciones de fertirriego
Provedor de dados: 32
Autores: Castro Cabrera, Rusbel.
El objetivo del presente trabajo fue evaluar la influencia de diferentes frecuencias de aplicación de nutrimentos minerales a través del fertirriego, sobre el crecimiento, desarrollo, rendimiento, calidad de fruto y contenido nutrimental en hoja y peciolo de papaya (Carica papaya L.) ‘Maradol’. Se utilizó un diseño experimental en bloques al azar con cinco tratamientos (3, 6, 12 y 24 días, como  frecuencias de aplicación de la solución universal “Steiner” al 50%, en fertirriego,  y aplicación de fertilizante granulado al suelo como testigo 150 150 150 kg ha-1  de N, P2O5 y K2O) y ocho repeticiones por tratamiento. Se evaluaron las variables altura de planta, numero acumulado de hojas, diámetro de tallo, altura del primer fruto, rendimiento, sólidos...
Tipo: Tesis
Palavras-chave: Carica papaya; ‘Maradol’; Frecuencia de fertirriego; Nutrición mineral Carica papaya; Maradol; Frequency of ferti-irrigation; Mineral nutrition.
Ano: 2012
URL: http://hdl.handle.net/10521/1022

Diferentes frecuencias de aplicación de nutrimentos minerales en el cultivo de papaya maradol bajo condiciones de fertirriego
Provedor de dados: 32
Autores: Castro Cabrera, Rusbel.
El objetivo del presente trabajo fue evaluar la influencia de diferentes frecuencias de aplicación de nutrimentos minerales a través del fertirriego, sobre el crecimiento, desarrollo, rendimiento, calidad de fruto y contenido nutrimental en hoja y peciolo de papaya (Carica papaya L.) ‘Maradol’. Se utilizó un diseño experimental en bloques al azar con cinco tratamientos (3, 6, 12 y 24 días, como  frecuencias de aplicación de la solución universal “Steiner” al 50%, en fertirriego,  y aplicación de fertilizante granulado al suelo como testigo 150 150 150 kg ha-1  de N, P2O5 y K2O) y ocho repeticiones por tratamiento. Se evaluaron las variables altura de planta, numero acumulado de hojas, diámetro de tallo, altura del primer fruto, rendimiento, sólidos...
Tipo: Tesis
Palavras-chave: Carica papaya; Maradol; Frecuencia de fertirriego; Nutrición mineral; Maestría; Fruticultura; Frequency of ferti-irrigation; Mineral nutrition.
Ano: 2009
URL: http://hdl.handle.net/10521/1350

Leaf concentrations of nitrogen and phosphorus in phaseolus vulgaris l. Plants under high CO2 concentration and drought stress
Provedor de dados: 70
Autores: Silva,João B. L. da; Ferreira,Paulo A.; Justino,Flávio; Pires,Luanna C.; Toledo,Amanda S.
This study aims to evaluate the leaf concentration of nitrogen and phosphorus correlated to the production of photoassimilates in beans plants (Phaseolus vulgaris L.) under high [CO2] and drought stress. The experiment was conducted in Viçosa (Brazil), during the period from April to July 2009, by using open-top chambers equipped with CO2 injection system. The drought stress was applied, through the irrigation suspension, during the period from flowering to maturation. The experimental design was randomized blocks in split-plot scheme with four replication, where the plots with plants grown in [CO2] of 700 mg L-1 and [CO2] environment of 380 mg L-1 and the subplots with plants with and without drought stress. The results were submitted to ANOVA and Tukey...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beans; Mineral nutrition; Photosynthesis; Climatic changes.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000500012

Effect of nitrogen doses on disease severity and watermelon yield
Provedor de dados: 75
Autores: Santos,Gil R dos; Castro Neto,Manoel D de; Almeida,Hudson SM de; Ramos,Leandro N; Sarmento,Renato A; Lima,Saulo de O; Erasmo,Eduardo Andrea L.
Nitrogen fertilization is an important step for watermelon (Citrullus lanatus) production due to its influence over yield, fruit quality, and disease severity. Currently, the gummy stem blight (Didymella bryoniae) and the downy mildew (Pseudoperonospora cubensis) can be taken as the most important watermelon diseases, since they impose severe impairment to the crop. Furthermore, studies focusing on plant responses to nitrogen fertilization regarding fruit yield and quality, and disease resistance are rare. Hence, the present study aimed at evaluating the effect of nitrogen doses on fruit yield and quality, and on disease prevalence in watermelon. Two experiments were carried out at the Universidade Federal de Tocantins, employing sprinkler irrigation, in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrullus lanatus; Didymella bryoniae; Pseudoperonospora cubensis; Mineral nutrition; Production.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362009000300012

Orchid in vitro growth as affected by nitrogen levels in the culture medium
Provedor de dados: 75
Autores: Tavares,Armando R; Young,Jorge Luiz M; Ori,Sandra S; Kanashiro,Shoey; Lima,Giuseppina PP; Chu,Edison Paulo; Suzuki,Rogério M.
In vitro cultivation is the main propagation method for the family Orchidaceae, whereas nitrogen is the most important nutrient in the culture media. This work was carried out to study the influence of different nitrogen concentrations on the in vitro growth of the orchid Phalaenopsis amabilis. Nitrogen concentrations varied by altering the ionic balance of the Murashige &amp;amp; Skoog (MS) culture medium. Plants, 360 days old, were cultivated in liquid MS, modified with 7.5, 15, 30, 45, and 60 mM N. After 180 days, we assessed plant and root length, number of leaves and roots, and fresh and dry weight of leaves, roots and plants. Treatments were assigned to completely randomized plots, with four replications. Plots consisted of five three-plant flasks....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phalaenopsis amabilis; MS; Mineral nutrition; Nitrogen.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000100020

Nitrogen concentration in dry matter of the fifth leaf during growth of greenhouse tomato plants
Provedor de dados: 75
Autores: Rattin,Jorge E.; Andriolo,Jerônimo L.; Witter,Márcio.
The nitrogen concentration in dry matter of the fifth leaf during growth of a greenhouse tomato crop was determined. Plants of hybrid Monte Carlo were grown in 4.5 L bags, using a commercial substrate, in a plant density of 3.3 plants m-2. A nutrient solution containing, in mmol L-1: KNO3, 4.0; K2SO4, 0.9; Ca(NO3)2, 3.75; KH2PO4, 1.5; MgSO4, 1.0; iron chelate 19. 10³, was used as reference. Microelements were added by a commercial mixture. The T3 treatment was equal to the reference nutrient solution, whereas in treatments T1, T2, T4 and T5 quantities of all nutrients from T3 were multiplied by 0.25, 0.50, 1.25 and 1.50, respectively. In each treatment, the volume of 1 L of nutrient solution was supplied to each plant once a week by fertigation....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lycopersicon esculentum; Nutrients; Mineral nutrition; Fertilization.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362002000400023

Anatomical alterations in taro corms with "metsubure" symptoms
Provedor de dados: 75
Autores: Pereira,Francisco HF; Puiatti,Mário; Meira,Renata MSA; Fontes,Paulo CR.
Taro plants present high Ca absorption. There is evidence that the disorder "metsubure" is of nutritional origin being attributed to calcium deficiency. The metsubure is characterized by the corm apical bud suppression and a smooth lesion in the apex. This disorder reduces the taro corms value as food and hinders their utilization as a propagative material in commercial fields. In subterranean structures, Ca deficiency is believed to be more harmful to the vascular tissue cells since they have thicker walls than other tissue cells. Thus, this work aimed to characterize the anatomical changes in taro corms (Colocasia esculenta), cv. Chinese (BGH 5928) with "metsubure" symptoms. For this, corms with and without this symptom were obtained from plants grown in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colocasia esculenta; Mineral nutrition; Physiological disorder; Eddoe.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000400022

Yield and nutrition of tomato using different nutrient sources
Provedor de dados: 75
Autores: Zuba,SN; Nogueira,WCL; Fernandes,LA; Sampaio,RA; Costa,CA.
The effect of alternative sources of nutrients was evaluated on yield, nutrition and fruit quality of tomato cv Santa Clara in an agro ecological system, under natural conditions in Montes Claros, Minas Gerais State, Brazil. The experimental design was of completely randomized blocks with seven treatments and four replications, using eight plants per experimental plot. The treatments comprised of 1) conventional fertilization with NPK; 2) organic compost + natural phosphate + rock dust, applied separately; 3) organic compost produced from the addition of natural phosphate and rock dust + green manure; 4) organic compost produced from the addition of rock dust + natural phosphate + green manure; 5) organic compost produced from the addition of natural...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lycopersicon esculentum; Organic fertilization; Mineral nutrition.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000100009

Effect of potassium sources on potato tuber yield and chip quality
Provedor de dados: 75
Autores: Silva,Giovani O; Bortoletto,Antonio C; Carvalho,Agnaldo DF; Pereira,Arione S.
ABSTRACT Many potato producers for fry industry changed from the use of potassium chloride to potassium sulfate, as there is a concept that the use of this source improves tuber quality. The aim of this work was to evaluate the effect of these two potassium sources on yield, specific gravity and chip color of potato chipping cultivars. The experiment was carried out on a Dystrophic Red Latosol, in Canoinhas, Brazil, in spring season 2016. Treatments consisted of two potato cultivars, BRSIPR Bel and Atlantic, and two sources of potassium, chloride and sulfate, applied in the furrow at the planting time, in rates based on soil analysis. Experimental design was a randomized complete block in a split-plot arrangement with four replications. Main plots were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum tuberosum; Mineral nutrition; Fertilizer; BRSIPR Bel; Atlantic.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000300395

ИСПОЛЬЗОВАНИЕМЕЛИОРАТИВНЫХ СВОЙСТВ CERATOPHYLLUM DEMERSUM ДЛЯ ДООЧИСТКИ СТОЧНЫХ ВОД
Provedor de dados: 13
Autores: Горбунова, С. Ю.
Приведены результаты исследования динамики роста и потребления биогенных элементов высшего водного растения Ceratophyllum demersum. Показано, что для его интенсивного роста необходимо не только минеральные, но также органические источники питания. Показано, что роголистник можно рекомендовать для доочистки вод на специализированных мелиоративных системах. http://biotex.ibss.org.ua/
Tipo: Journal Contribution
Palavras-chave: Роголистник; Сточные воды; Доочистка; Минеральное питание; Роголістник; Стічні води; Доочищення; Мінеральне живлення; Ceratophyllum; Sewages; Secondary treatment; Mineral nutrition.
Ano: 2010
URL: http://repository.ibss.org.ua/dspace/handle/99011/1868

Nutrição mineral de bovinos.
Provedor de dados: 14
Autores: POTT, E. B.
bitstream/item/225903/1/NutricaoMineralBovinos.pdf
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Nutrição mineral; Bovine; Mineral nutrition; Bovino.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/43959

Sintomas visuais de deficiências nutricionais em grama-do-cerrado (Mesosetum chaseae).
Provedor de dados: 14
Autores: FREITAS, D. A. F. de; GOMIDE, P. H. O.; RUFINI, M.; PENHA, H. G. V.; CARDOSO, E. L.; SILVA, M. L. N.; SANTOS, S. A.; CARVALHO, J. G. de.
Em experimento de casa de vegetação, cultivou-se Mesosetum chaseae Luces (grama-do-cerrado) em soluçãonutritiva, tendo como tratamentos a solução completa, as omissões individuais dos macronutrientes N, P, K, Ca, Mg, S e micronutrientes B, Zn, Fe e Mn. Fez-se o acompanhamento semanal da manifestação dos sintomas visuais de deficiência após o transplantio, além de medições biométricas tais como altura máxima, número de perfilhos e produção da matéria seca da parte aérea (MSPA) e da raiz (MSR) da grama-do-cerrado. A forrageira grama-do-cerrado mostrou-se mais exigente em N, P e Fe demonstrando sintomas de deficiência na fase inicial de crescimento. Para os índices biométricos e de produção analisados, todos apresentaram diferenças significativas entre os...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Nutrição mineral; Omissão de nutrientes; Native pasture; Mineral nutrition; Nutrient omission.; Pastagem Nativa.
Ano: 2011
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/918555

Nutrição mineral de plantas em áreas de produção de sementes: 1. Sua braquiária está com fome?
Provedor de dados: 14
Autores: SOUZA, F. H. D. de.
bitstream/item/37190/1/rectecnica02.pdf
Tipo: Recomendação Técnica (INFOTECA-E)
Palavras-chave: Nutrição mineral; Plantas; Mineral nutrition; Plant; Seed production.; Nutriente mineral; Planta; Deficiencia nutricional; Produção de Sementes.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/45324

Controle sanitário e mineralização para bovinos na região dos cerrados.
Provedor de dados: 14
Autores: SAUERESSIG, T. M.; SAUERESSIG, M. G.; LOPES, H. O. da S.
bitstream/item/99085/1/cirtec-35.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Supplements; Mineral nutrition; MIneralization Cerrado.; Bovino; Cerrado; Mineralização; Nutrição; Nutrição Animal; Saúde; Suplemento Mineral; Veterinária.; Animal nutrition; Animal health; Cattle; Mineralization.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/553714

Forrageamento e nutrição mineral de bovinos de corte no Pantanal.
Provedor de dados: 14
Autores: SANTOS, S. A.; POTT, E. B.; COMASTRI FILHO, J. A.; CRISPIM, S. M. A.
Nutrição mineral de bovinos de corte no Pantanal; Concentração de minerais em pastagens cultivadas; Suplementação mineral em pastagens.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Pecuária de corte; Nutrição mineral; Bovino de corte; Vacas de cria; Suplementação mineral; Mato Grosso do Sul; Mineral nutrition; Native pasture; Mineral suplementation.; Deficiência Mineral; Pastagem Nativa.; Pantanal; Beef cattle.
Ano: 2002
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/810727

Nutrição mineral e adubação da cultura do melão.
Provedor de dados: 14
Autores: FARIA, C. M. B. de.
Trata de sintetizar e divulgar o que existe disponível na literatura sobre a adubação da cultura do melão. Desta forma, são abordados aspectos relacionados com solo, nutrição mineral, níveis, formas e épocas de aplicação de nutrientes.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Nutrição mineral; Cultivo; Mineral nutrition; Crop; Melon.; Melão; Adubação; Cucumis Melo.; Fertilizer application; Melons.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/131988

Nutrição mineral e adubação da cultura da melancia.
Provedor de dados: 14
Autores: FARIA, C. M. B. de.
Trata sobre solos, acidez e calagem, deficiencias e toxicidade de alguns nutrientes, formas/fontes de nitrogenio e potassio, importancia dos nutrientes na formacao e qualidade dos frutos, podridao apical, absorcao de nutrientes, niveis e modo de adubacao, epoca de aplicacao de nutrientes.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Nutrição mineral; Mineral nutrition; Watermelon.; Melancia; Adubação; Citrullus Lanatus.; Fertilizer application; Watermelons.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/131986

Funcao dos nutrientes minerais e sintomas de deficiencia e excesso.
Provedor de dados: 14
Autores: ALBUQUERQUE, T. C. S. de.
bitstream/item/182940/1/FL-06898.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Nutricao mineral; Excesso nutricional; Estresse; Mineral nutrition; Nutrient excesses; Composição Química; Deficiência Nutricional; Fruta; Stress; Chemical composition; Fruits; Nutrient deficiencies.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134010

Dendronutrition as a tool to evaluate Pinus taeda wood productivity and quality
Provedor de dados: 190
Autores: Bellote, Antonio Francisco Jurado; Tomazello Filho, Mario; Dedecek, Renato Antonio.
The objective of this work was to evaluate the effect of mineral nutrients on tree growth and wood quality of Pinus taeda, on commercial plantation at 20 years after planting, on different soil types. Experimental plots were set, and from trees representing each population, stem disks were collected at different heights. Treegrowth, wood quality and growth ring parameters – tracheids diameter and radial density by X-ray densitometry – were analyzed and related to mineral nutrient contents. Results showed negative correlation among Mn and Mg stem disk contents and Pinus taeda tree growth; negative correlation was also obtained among Ca, Mg and Mn contents and tracheids dimensions and wood density. There was no correlation among N, P, K and B contents in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mineral nutrition; Wood density; Tracheids; Tree rings; Forest soils. Nutrientes minerais; Densidade da madeira; Traqueídeos; Anéis de crescimento; Solos florestais.
Ano: 2010
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/132

Soluções nutritivas para produção de porta-enxertos de seringueira
Provedor de dados: 190
Autores: Olivieri de Nobile, Fabio; Paro, Gabriel Fernando; Farinelli, Rogério.
O objetivo deste trabalho foi avaliar a produção suspensa de porta-enxertos de seringueira com substrato em fertirrigação. Foram testados quatro tipos de soluções nutritivas em delineamento experimental inteiramente casualizado, com 5 repetições. A fertirrigação foi realizada a cada dois dias, utilizando-se 200 mL da solução por recipiente. Avaliou-se altura de planta, diâmetro de caule (5 cm acima do colo da planta), área foliar, número de par de folhas, matéria seca da parte aérea e raízes, teor foliar de nutrientes e porcentagem de plantas aptas à enxertia. Os maiores valores para altura de plantas, número de pares de folhas, diâmetro de caule e área foliar dos porta-enxertos foram obtidos com a concentração mais elevada de nutrientes. O teor foliar de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutrição de Plantas; Engenharia Floretal  Adubação de Culturas Crescimento; Hevea brasiliensis; Nutrição Mineral Growth; Hevea brasiliensis; Mineral nutrition.
Ano: 2017
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1347

Acclimatization of Tapeinochilos ananassae plantlets in association with arbuscular mycorrhizal fungi
Provedor de dados: 86
Autores: Oliveira,João Ricardo Gonçalves de; Morais,Thiago Alberto de Lima; Melo,Natoniel Franklin de; Yano‑Melo,Adriana Mayumi.
The objective of this work was to assess the potential of three isolates of arbuscular mycorrhizal fungi to promote growth of micropropagated plantlets of Tapeinochilos ananassae during acclimatization. The experiment was carried out in greenhouse, in a completely randomized block design, with four inoculation treatments: non‑inoculated control and plants inoculated with Glomus etunicatum, Acaulospora longula or Gigaspora albida, with ten replicates. After 90 days, the following parameters were evaluated: survival rate, height, leaf and tiller number, leaf area, fresh and dry biomass, contents of macro‑ and micronutrients in the root and shoot, glomerospore number, and mycorrhizal colonization. The survival percentage was 100%, except for plants inoculated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glomeromycota; Growth promotion; Micropropagation; Mineral nutrition; Tropical flowers.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000900018

Growth, mineral composition, fruit yield, and mycorrhizal colonization of feijoa in response to lime and phosphorus application
Provedor de dados: 86
Autores: Nava,Gilberto; Santos,Karine Louise dos; Costa,Murilo Dalla; Ciotta,Marlise Nara.
Abstract: The objective of this work was to investigate the effect of liming and phosphorus fertilization on the growth, mineral composition of the leaves, fruit yield, and mycorrhizal colonization of young feijoa (Acca sellowiana) plants. Treatments consisted of four liming levels - 0, 25, 50, and 100% of the dose required to raise the soil pH to 6.5 - and of five levels of P - 0, 60, 120, 180, and 240 kg ha-1 P2O5 -, placed in a randomized complete block design, in a split-plot arrangement, with three replicates. The orchard was established in 2010 with the Helena cultivar. In 2012, 2013, and 2014, plant growth was evaluated by measuring trunk perimeter, plant height, and tree canopy width. Mineral composition of the leaves, regarding P, N, K, Ca, and Mg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acca sellowiana; Mineral nutrition; Mycorrhizal colonization; Nutritional status; Phosphorus fertilization; Soil acidity.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000800942

Impacts of water availability on macronutrients in fruit and leaves of conilon coffee
Provedor de dados: 86
Autores: Covre,André Monzoli; Partelli,Fábio Luiz; Bonomo,Robson; Tomaz,Marcelo Antônio; Ramalho,José Cochicho.
Abstract: The objective of this work was to evaluate the concentrations and accumulation of macronutrients in conilon coffee (Coffea canephora) fruit, and their concentrations in leaves, over two years, in irrigated and nonirrigated coffee plants. Three-year-old conilon coffee plants of the cultivar Emcapa 8111 genotype 02 were used. An experimental design was carried out in randomized complete blocks, in a split-plot arrangement, with 14 replicates. The main plot factor was irrigation versus nonirrigation of coffee plants, and the split-plot factor was different fruit and leaf collection times. Collections began 10 days after the beginning of flowering and were performed on average every 28 days, until full fruit ripening. At each sampling date, five...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffee; Mineral nutrition; Nutrient accumulation; Water deficit.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000901025

Leaf mineral composition of grafted eggplant grown in soil infested with Verticillium and root-knot nematodes
Provedor de dados: 86
Autores: Çürük,Sebahattin; Dasgan,H. Yildiz; Mansuroğlu,Sedat; Kurt,Şener; Mazmanoğlu,Meltem; Tarla,Gülcan; Durgaç,Coşkun.
The objective of this work was to determine differences in leaf mineral composition between ungrafted and grafted onto (Solanum torvum) eggplant (Solanum melongena), cultivars 'Faselis' and 'Pala', grown in a soil infested with Verticillium dahliae and Meloidogyne incognita, or in a noninfested soil. Grafting increased leaf P and Mn concentrations, and decreased N concentrations, in both soils. Grafting also enhanced leaf Ca concentration of 'Pala', but it did not affect that of 'Faselis' depending on the cropping year. Leaf Mg concentration of grafted plants in infested soil was lower than that of ungrafted ones in noninfested soil. Results showed that, under the same fertilization program, the grafted 'Faselis' plants used the nutrients more efficiently...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Meloidogyne incognita; Solanum melongena; Solanum torvum; Mineral nutrition; Multiple pathogen infestation.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010000800014

Phosphorus acquisition and internal utilization efficiency in tropical maize genotypes
Provedor de dados: 86
Autores: Parentoni,Sidney Netto; Souza Júnior,Claudio Lopes de.
The objective of this work was to determine the relative importance of phosphorus acquisition efficiency (PAE - plant P uptake per soil available P), and phosphorus internal utilization efficiency (PUTIL - grain yield per P uptake) in the P use efficiency (PUE - grain yield per soil available P), on 28 tropical maize genotypes evaluated at three low P and two high P environments. PAE was almost two times more important than PUTIL to explain the variability observed in PUE, at low P environments, and three times more important at high P environments. These results indicate that maize breeding programs, to increase PUE in these environments, should use selection index with higher weights for PAE than for PUTIL. The correlation between these two traits showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Mineral nutrition; Phosphorus acquisition; Phosphorus use efficiency; Plant breeding; Quotient of utilization.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008000700014

Arabica coffee response to rates of coated and conventional urea in sandy soil
Provedor de dados: 86
Autores: Abranches,Jorge Luiz; Soratto,Rogério Peres; Perdoná,Marcos José; Parecido,Renan José.
Abstract: The objective of this work was to evaluate the growth, relative chlorophyll index and nitrogen concentrations in leaves, and the grain yield of arabica coffee (Coffea arabica) fertilized with rates of N as coated and conventional urea, in a sandy soil under rainfed conditions. The experiment was carried out over three crop years, using 'Mundo Novo IAC 388-17-1' coffee, in a randomized complete block design, in a 3×2+1 factorial arrangement, with three treatments with 150, 300, and 600 kg ha-1 N, as coated and conventional urea, and a control without N, with six replicates. Nitrogen increased stem diameter, plant height, N concentrations and relative chlorophyll index in the leaves, as well as grain yield. Over the three crop years, the highest N...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica; Grain yield; Mineral nutrition; Nitrogen; Slow release.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102101

Macromineral requirements of Holstein calves
Provedor de dados: 86
Autores: Rodrigues,João Paulo Pacheco; Lima,Jéssika Carolina Moutinho; Castro,Marcelo Messias Duarte; Valadares Filho,Sebastião de Campos; Chizzotti,Mario Luiz; Campos,Mariana Magalhães; Machado,Fernanda Samarini; Marcondes,Marcos Inácio.
Abstract: The objective of this work was to quantify the net requirements for the maintenance (NRm) and growth (NRg), as well as the retention coefficient (RC) of calcium, phosphorus, sodium, potassium and magnesium, of Holstein calves. The NRm were 87.8, 20.8, 4.36, 2.21, and 1.01 mg kg-1 of empty body weight for Ca, P, Na, K, and Mg, respectively. The RC was 0.882, 0.473, 0.274, 0.088, and 0.052 for Ca, P, Na, K, and Mg respectively. The requirements of Ca and P of Holstein calves are higher than those estimated for adult animals.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mineral nutrition; Nutrient requirement; Ruminants.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000400522

Influence of rootstocks and pruning times on yield and on nutrient content and extraction in 'Niagara Rosada' grapevine
Provedor de dados: 86
Autores: Tecchio,Marco Antonio; Moura,Mara Fernandes; Teixeira,Luiz Antonio Junqueira; Pires,Erasmo José Paioli; Leonel,Sarita.
The objective of this work was to evaluate the influence of rootstocks and pruning times on yield and on nutrient content and extraction by pruned branches and harvested bunches of 'Niagara Rosada' grapevine in subtropical climate. The rootstocks 'IAC 766', 'IAC 572', 'IAC 313', 'IAC 571-6', and '106-8 Mgt' were evaluated. Treatments consisted of a combination between five rootstocks and three pruning times. At pruning, fresh and dry matter mass of branches were evaluated to estimate biomass accumulation. At harvest, yield was estimated by weighing of bunches per plant. Branches and bunches were sampled at pruning and at harvest, respectively, for nutrient content analysis. Nutrient content and dry matter mass of branches and bunches were used to estimate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis labrusca; Vitis vinifera; Biomass accumulation; Mineral nutrition; Yield.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000500340

Tolerância de porta-enxertos de videira ao alumínio do solo
Provedor de dados: 86
Autores: Fráguas,José Carlos.
Onze porta-enxertos e duas cultivares americanas de videira (Vitis spp) foram avaliadas mediante níveis de saturação por Al no solo (Cambissolo Húmico álico), objetivando alcançar a tolerância diferenciada ao Al. O trabalho foi conduzido em casa de vegetação, com seis tratamentos completamente casualizados e quatro repetições, na Embrapa-Centro Nacional de Pesquisa de Uva e Vinho, em Bento Gonçalves, RS, no período de 1987 a 1990. As características avaliadas foram: altura das plantas, comprimento das raízes, peso da matéria seca da parte aérea e das raízes e teores de P, K, Ca e Mg em folhas e raízes. Diante dos acréscimos ou aumentos verificados em cada característica (variação %) e por cultivar, foi possível estabelecer a tolerância diferenciada das...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis; Nutrição mineral; Toxidez; Tolerância ao alumínio; Vitis; Mineral nutrition; Toxicity; Aluminum tolerance.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000700011

Accumulation of dry mass and macronutrients by sourgrass plants
Provedor de dados: 87
Autores: Carvalho,L.B.; Bianco,M.S.; Bianco,S.
The experiment was carried out aiming to analyze the dry mass production and distribution and the content and accumulation of macronutrients in sourgrass (Digitaria insularis) plants cultivated under mineral nutrition standard conditions. Plants grew in 7-liter pots filled with sand substrate and daily irrigated with nutrient solution, being maintained under greenhouse conditions. Treatments consisted of times of evaluation (21, 35, 49, 63, 77, 91, 105, 119, and 133 days after emergence - DAE) and were arranged in a completely randomized design with four replicates. Sourgrass showed small accumulation of dry mass (0.3 g per plant) and macronutrients (3.7 mg of N per plant, 0.4 mg of P per plant, 5.6 mg of K per plant, 0.9 mg of Ca per plant, 0.7 mg of Mg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digitaria insularis; Plant growth; Mineral nutrition.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000400004

Growth and nutrient concentration in coffee root system under weed species competition
Provedor de dados: 87
Autores: Ronchi,C.P.; Terra,A.A.; Silva,A.A.
The effects of competition of six weed species on growth, nutrient concentration and nutrient content of coffee plant root system under greenhouse conditions were evaluated. Thirty days after coffee seedling transplantation into 12 L pots with soil level area of 6.5 dm². Weeds were transplanted or sowed in these pots, at densities of 0, 1, 2, 3, 4 and 5 plants per pot. The duration of competition (or weedy periods) from weed transplantation or emergence until plant harvesting, at the weed preflowering stage, were (in days): 77 (Bidens pilosa), 180 (Commelina diffusa), 82 (Leonurus sibiricus), 68 (Nicandra physaloides), 148 (Richardia brasiliensis) and 133 (Sida rhombifolia). Dry matter of coffee plants was linearly reduced with increasing B. pilosa and S....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica; Weed density; Interference; Mineral nutrition; Root.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582007000400004

Weed Interference on the Accumulation of Dry Mass and Macronutrients of Eggplant ‘Nápoli’
Provedor de dados: 87
Autores: MARQUES,L.J.P.; BIANCO,M.S.; BIANCO,S.; FILHO,A.B.C.; CERVEIRA JR,W.R.; CARVALHO,L.B.
ABSTRACT: The presence of weeds may affect both growth and nutrition of agricultural crops due to interference. The objective was to evaluate the interference of weeds in the dry mass distribution and in the accumulation of dry mass and macronutrients in eggplant. The treatments consisted of increasing weed-free and weedy periods (0-14, 0-28, 0-42, 0-56, 0-70, 0-84, 0-98, 0-112, 0-126, 0-140 and 0-154 days after transplanting) in eggplant ‘Nápoli’. The experiment was arranged in a randomized block design with three replicates. Weeds affected the distribution of dry mass between vegetative and reproductive organs of eggplant. There was a significant reduction in the accumulation of dry mass and macronutrients when weeds grew with eggplant crop beyond 42...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum melogena; Weed competition; Plant growth; Mineral nutrition.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100298

Effects of dietary calcium levels and limestone particicle size on the performance, tibia and blood of laying hens
Provedor de dados: 89
Autores: Pelicia,K; Mourao,JLM; Garcia,EA; Pinheiro,VMC; Berto,DA; Molino,AB; Faitarone,ABG; Vercese,F; Santos,GC; Silva,AP.
A total of 405 23-week-old ISA® Brown layers were distributed in a completely randomized experimental design in a factorial arrangement with nine treatments consisting of three dietary calcium levels (3.5, 3.75, and 4.5%) and three limestone particle sizes (100% fine limestone (FL), 70% FL + 30% coarse limestone (CL) and 50% (FL) + 50% (CL)), with nine replicates of five birds per cage. The following parameters were evaluated: percentage of lay, defective eggs, egg weight, egg mass, feed intake, feed conversion ratio (per kg eggs and per dozen eggs), and mortality. Dietary Ca levels significantly affected lay, with birds fed diets containing 4.5% calcium producing less eggs as compared to those fed 3.0 and 3.75% Ca. Egg production linearly decreased as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg production; Mineral nutrition; Mineral particle size.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000100005

Optimal Available Phosphorus Levels in Diets Containing Different Dicalcium Phosphate Particle Sizes for Japanese Quails
Provedor de dados: 89
Autores: Nascimento,MQ; Vargas Junior,JG; Pinto,CEL; Demuner,LF; Petrucci,FB; Vieites,FM.
ABSTRACT This experiment was conducted to investigate the effects available phosphorus levels and dicalcium phosphate particle size on the live performance, and egg parameters and bone parameters of Japanese quails in lay. The experimental diets were based on corn and soybean meal and formulated to contain 2900 kcal metabolizable energy (ME)kg-1, 200 g kg-1 crude protein (CP) and 30.5 g kg-1 calcium (Ca). Feeds were supplied ad libitum. Laying Japanese quails (n=720, 20-wk-old)were distributed in a completely randomized design in a 5 x 2 factorial arrangement, with five levels of available phosphorus (avP; 1.0, 2.0, 3.0, 4.0, 5.0 g kg-1) and two dicalcium phosphate particle sizes (fine orcoarse), totaling ten treatments with eight replicates of nine birds...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg quality; Macrominerals; Mineral nutrition.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400301

Nutrient leaching potential following application of papermill lime-sludge to an acidic clay soil
Provedor de dados: 90
Autores: Vettorazzo,S. C.; Amaral,F. C. S.; Chitolina,J. C.
This experiment was carried out under greenhouse conditions with soil pots during 210 days, to evaluate the effect of calcitic papermill lime-sludge application (at the rates 0, 773, 1.547, and 2.320 mg kg-1 or respective equivalents to control, 2, 4, and 6 t ha-1), on chemical composition of soil leachate and its effects on eucalypt growth and yield. Highest soil leachate pH, SO4, and Na concentrations occurred in the 4 and 6 t ha-1 treatments. Soil leachate nitrate concentrations decreased with increasing lime-sludge rate. Soil leachate phosphate remained low (below the detection limit) in all treatments until 120 days, while the concentration increased in the lime-sludge treatments at 210 days (last sampling) in about 600 mg L-1. Lime-sludge decreased...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eucalypt; Industrial residue; Soil fertility; Mineral nutrition; Sodium; Recycling.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832001000300025

Manganese uptake and redistribution in soybean as affected by glyphosate
Provedor de dados: 90
Autores: Rosolem,Ciro Antonio; Andrade,Gabriel José Massoni de; Lisboa,Izaias Pinheiro; Zoca,Samuel Menegatti.
Detrimental effects of glyphosate on plant mineral nutrition have been reported in the literature, particularly on Mn uptake and redistribution. However, in most of the experiments conducted so far glyphosate-susceptible plants were used. Effects of glyphosate on Mn absorption kinetics, accumulation, and distribution within the plant, as well as soybean response to Mn as affected by glyphosate were studied in three experiments. In the first experiment, in nutrient solution, the effect of glyphosate on soybean Mn uptake kinetic parameters (Imax, Km and Cmin) was determined. In a second experiment, also in nutrient solution, differential Mn accumulation and distribution were studied for a conventional soybean cultivar and its near-isogenic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Absorption kinetics; Micronutrient; Mineral nutrition.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000600016

Macronutrient Uptake and Removal by Upland Rice Cultivars with Different Plant Architecture
Provedor de dados: 90
Autores: Crusciol,Carlos Alexandre Costa; Fernandes,Adalton Mazetti; Carmeis Filho,Antonio Carlos de Almeida; Alvarez,Rita de Cássia Félix.
ABSTRACT Modern high-yielding rice cultivars possibly take up and remove greater quantities of macronutrients than traditional and intermediate cultivars. This study was carried out with the aim of evaluating the extraction and removal of macronutrients by upland rice cultivars. These information are of utmost importance for the correct fertilizer management. The treatments consisted of three upland rice cultivars (Caiapó, a traditional type; BRS Primavera, an intermediate type; and Maravilha, a modern type). Macronutrient accumulation by rice cultivars up to the end of tillering (46 DAE) accounted for only 25 % of the total N and P, and between 35-45 % of the total K, Ca, Mg, and S; after that time, accumulation was intensified. In all of the cultivars,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa; Mineral nutrition; Uptake rates; Nutritional efficiency.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100521

Leaf application of silicic acid to white oat and wheat
Provedor de dados: 90
Autores: Soratto,Rogério Peres; Crusciol,Carlos Alexandre Costa; Castro,Gustavo Spadotti Amaral; Costa,Claudio Hideo Martins da; Ferrari Neto,Jayme.
Silicon (Si) is beneficial to plants in several aspects, but there are doubts about the effectiveness of leaf application. The purpose of this work was to evaluate the effects of Si, applied in a newly developed stabilized silicic acid form to the leaf, on nutrition and yield of irrigated white oat and wheat. Two experiments were performed (one per crop) in winter 2008, in Botucatu-SP, Brazil. A completely randomized block design with 14 replications was used. Treatments consisted of a control (without Si application) and Si leaf spraying, at a rate of 2.0 L ha-1 of the commercial product containing 0.8 % soluble Si. Silicon rate was divided in three parts, i.e. applications at tillering, floral differentiation and booting stages. Silicon leaf application...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avena sativa; Triticum aestivum; Silicon; Mineral nutrition; Yield components.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000500018

Nutrition, dry matter accumulation and partitioning and phosphorus use efficiency of potato grown at different phosphorus levels in nutrient solution
Provedor de dados: 90
Autores: Fernandes,Adalton Mazetti; Soratto,Rogério Peres.
High rates of phosphate fertilizers are applied to potato (Solanum tuberosum L.), which may cause antagonistic interactions with other nutrients and limit crop yields when over-supplied. The purpose of this study was to evaluate the influence of phosphorus (P) levels in nutrient solution on P use efficiency, nutritional status and dry matter (DM) accumulation and partitioning of potato plants cv. Ágata. The experiment was carried out in a greenhouse, arranged in a completely randomized block design with four replications. Treatments consisted of seven P levels in nutrient solution (0, 2, 4, 8, 16, 31, and 48 mg L-1). Plants were harvested after 28 days of growth in nutrient solution, and separated in roots, stems and leaves for evaluations. The treatment...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum tuberosum; Dry matter; Mineral nutrition; Nutrient interaction.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000500017

Nitrogen and Potassium Fertilization in a Guava Orchard Evaluated for Five Cycles: Effects on the Plant and on Production
Provedor de dados: 90
Autores: Montes,Rafael Marangoni; Parent,Léon Étienne; Amorim,Daniel Angelucci de; Rozane,Danilo Eduardo; Parent,Sergie-Étienne; Natale,William; Modesto,Viviane Cristina.
ABSTRACT Guava response to fertilization can be monitored through plant tissue analysis. Correct interpretation of these results, based on standard levels, is of great importance for correct nutrient management of the crop. However, standard levels are constantly criticized for not considering interactions among elements. To improve the nutritional diagnosis of ‘Paluma’ guava (Psidium guajava L., Myrtaceae), an experiment was conducted using nitrogen fertilization (0, 0.5, 1.0, and 2.0 kg per plant per cycle of N, with urea as a source with 45 % N), and potassium fertilization (0, 0.55, 1.1, and 2.2 kg per plant per cycle of K2O, with potassium chloride as a source with 60 % K2O) in an irrigated commercial area for five consecutive cycles, 2009 through...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Isometric log ratio (ilr); Mineral nutrition; Nutrient balance; Compositional analysis.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100534

Nutrient relations during an eucalyptus cycle at different population densities
Provedor de dados: 90
Autores: Leite,Fernando Palha; Silva,Ivo Ribeiro; Novais,Roberto Ferreira; Barros,Nairam Félix de; Neves,Júlio César Lima; Villani,Ecila Mercês de Albuquerque.
To synchronize nutrient availability with the requirements of eucalyptus during a cultivation cycle, the nutrient flow of this system must be well understood. Essential, for example, is information about nutrient dynamics in eucalyptus plantations throughout a cultivation cycle, as well as impacts on soil nutrient reserves caused by the accumulation and subsequent export of nutrients via biomass. It is also important to quantify the effect of some management practices, such as tree population density (PD) on these fluxes. Some nutrient relations in an experiment with Eucalyptus grandis, grown at different PDs in Santa Barbara, state of Minas Gerais, Brazil, were evaluated for one cultivation cycle. At forest ages of 0.25, 2.5, 4.5, and 6.75 years,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mineral nutrition; Tree spacing; Sustainability; Fertilization.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000300029

Beaufils ranges to assess the cotton nutrient status in the southern region of Mato Grosso
Provedor de dados: 90
Autores: Serra,Ademar Pereira; Marchetti,Marlene Estevão; Rojas,Enrique Pouyú; Vitorino,Antônio Carlos Tadeu.
The relationships between nutrient contents and indices of the Diagnosis and Recommendation Integrated System (DRIS) are a useful basis to determine appropriate ranges for the interpretation of leaf nutrient contents. The purpose of this study was to establish Beaufils ranges from statistical models of the relationship between foliar concentrations and DRIS indices, generated by two systems of DRIS norms - the F value and natural logarithm transformation - and assess the nutritional status of cotton plants, based on these Beaufils ranges. Yield data from plots (average acreage 100 ha) and foliar concentrations of macro and micronutrients of cotton (Gossypium hirsutum r. latifolium) plants, in the growing season 2004/2005, were stored in a database. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mineral nutrition; Gossypium hirsutum r. latifolium; Leaf analysis; DRIS.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000100018

Nutrient extraction and exportation by common bean cultivars under different fertilization levels: II - micronutrients
Provedor de dados: 90
Autores: Fernandes,Adalton Mazetti; Soratto,Rogério Peres; Santos,Letícia Andriani dos.
Where the level of agricultural technology is higher, common bean cultivars with a higher yield potential possibly require greater amounts of micronutrients. In Brazil however, there is a lack of information about the micronutrient extraction and exportation by the main grown cultivars. The objective of this study was to evaluate micronutrient (B, Cu, Fe, Mn, and Zn) extraction and exportation by common bean cultivars Pérola and IAC Alvorada, under different levels of NPK fertilization, on a dystroferric Red Nitosol, in Botucatu, São Paulo State, Brazil. The experiment was arranged in a randomized complete block (split plot) design with four replications. The plots consisted of six treatments based on a 2 x 3 factorial model, represented by two cultivars...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Mineral nutrition; Absorption curves; Absorption rates; Nutrients accumulation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000400021

Nutrient Uptake and Removal by Potato Cultivars as Affected by Phosphate Fertilization of Soils with Different Levels of Phosphorus Availability
Provedor de dados: 90
Autores: Fernandes,Adalton Mazetti; Soratto,Rogério Peres; Souza,Emerson de Freitas Cordova de; Job,André Luiz Gomes.
ABSTRACT Studies in the past decades have focused on how tuber yield of potato grown on different types of soil is affected by phosphate fertilizer rates. However, little is known about the effects of phosphorus availability in the soil and of phosphate fertilization on nutrient uptake and removal by the main potato cultivars currently grown in Brazil. Thus, in this study we investigated the influence of P fertilization rates on dry matter (DM) yield and nutrient uptake and removal in five potato cultivars grown on soils with different levels of P availability. Experiments were conducted on soil with low (14 mg dm-3), medium (36 mg dm-3), and high (70 mg dm-3) P availability, in randomized complete blocks with a 5 × 5 factorial arrangement with four...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum tuberosum; Mineral nutrition; Phosphorus rate; Nutrient accumulation; Nutrient partitioning.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100516

Nutrient extraction and exportation by common bean cultivars under different fertilization levels: I - macronutrients
Provedor de dados: 90
Autores: Soratto,Rogério Peres; Fernandes,Adalton Mazetti; Santos,Letícia Andriani dos; Job,André Luiz Gomes.
The use of cultivars with a higher yield potential and the adoption of new technology have achieved high grain yields in common bean, which probably changed the demand for nutrients in this crop. However, there is almost no information about the periods of the cycle in which nutrients are most demanded at which quantities by the main cultivars. The objective of this study was to evaluate the macronutrient extraction and exportation by the common bean cultivars Pérola and IAC Alvorada, under different levels of NPK fertilization, on a dystroferric Red Nitosol, in Botucatu, São Paulo State, Brazil. The experiment was arranged in a randomized complete block (split plot) design with four replications. The plots consisted of six treatments based on a 2 x 3...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Mineral nutrition; Absorption curves; Absorption rates; Nutrients accumulation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000400020

Yield gains of coffee plants from phosphorus fertilization may not be generalized for high density planting
Provedor de dados: 90
Autores: Valadares,Samuel Vasconcelos; Neves,Júlio César Lima; Novais,Roberto Ferreira; Rosa,Gustavo Nogueira Guedes Pereira; Martinez,Hermínia Emília Prieto; Alvarez V.,Víctor Hugo.
Inconclusive responses of the adult coffee plant to phosphorus fertilization have been reported in the literature, especially when dealing with application of this nutrient in high density planting systems. Thus, this study was carried out for the purpose of assessing the response of adult coffee plants at high planting density in full production (in regard to yield and their biennial cycle/stability) to the addition of different sources and application rates of P in the Zona da Mata region of Minas Gerais, Brazil. The experiment with coffee plants of the Catucaí Amarelo 6/30 variety was carried out over four growing seasons. Treatments were arranged in a full factorial design [(4 × 3) + 1] consisting of four P sources (monoammonium phosphate, simple...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica; Mineral nutrition; Biennial cycle/stability.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000300022

Nutritional status of jatropha under cattle manure and natural phosphate in rainfed conditions
Provedor de dados: 91
Autores: Lima,Rosiane L. S. de; Azevedo,Carlos A. V. de; Gheyi,Hans R.; Carvalho Júnior,Genelicio S.; Cazetta,Jairo O.; Arriel,Nair H. C.
ABSTRACTThere is little information on the technical recommendation of fertilization for jatropha in the semi-arid region. This study aimed to evaluate the nutritional status of jatropha plants fertilized with cattle manure and natural phosphate under rainfed conditions. The experiment was set in a randomized block design, with three replicates, arranged in a 4 x 4 factorial scheme, corresponding to 4 doses of cattle manure (0, 4, 8 and 12 t ha-1) and 4 doses of natural phosphate (0, 250, 500 and 750 kg ha-1). The application of 8 t ha-1 of cattle manure, in isolation or associated with 500 kg ha-1 of natural phosphate, promotes adequate conditions to obtain jatropha plants with sufficient levels (g kg-1) of N (29.8), P (5.1), K (33.8), Ca (17.1), Mg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Jatropha curcas L.; Alternative sources of fertilizer; Mineral nutrition.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015001101028

Phosphate and potassium fertilization on agronomic and physico-chemical characteristics and bioactive compounds of eggplant
Provedor de dados: 91
Autores: Oliveira,Luciene A. de; Silva,Ernani C. da; Carlos,Lanamar de A.; Maciel,Gabriel M.
ABSTRACT Eggplant is a functional food rich in antioxidants and its consumption brings several benefits to human health. Phenolic compounds and anthocyanins are some of the compounds that interfere in this antioxidant capacity and may be influenced by the mineral nutrition of the plant. The objective was to analyze the effects of potassium and phosphate fertilization on the agronomic and physico-chemical characteristics and bioactive compounds of eggplant fruits. The work was carried out at the Taboquinha Farm, in the municipality of Baldim, MG, at coordinates 19º 17’ 12.5” S and 43º 54’ 01” W, from March to October 2017. The experimental design was randomized blocks in a 4 x 4 factorial scheme with four replicates. The factors under study were phosphorus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mineral nutrition; Anthocyanins; Phenolic compounds.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000400291

Macronutrients in watermelon plants fertilized with potassium and cattle manure
Provedor de dados: 91
Autores: Nascimento,José A. M. do; Souto,Jacob S.; Pereira,Walter E.; Medeiros,Sherly A. da S.; Cavalcante,Lourival F.
ABSTRACT Potassium is the nutrient required in greatest quantity by watermelon, especially during the production phase. Therefore, the aim of this experiment was to evaluate the effect of potassium and cattle manure doses on the nutritional composition of ‘Crimson Sweet’ watermelon plants. The treatments were arranged in a randomized block design with three replicates and 21 plants per plot using a 3 × 5 + 1 factorial scheme, referring to three manure doses (0; 1,100 and 2,520 g hole-1), in order to increment the level of soil organic matter from 0.67 present in the soil to 3.0 and 6.0%, five potassium doses (0, 7.5, 15, 22.5 and 30 kg ha-1) in the form of potassium chloride and one additional treatment (without organic and mineral fertilization). At the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrullus lanatus; Organic matter; Mineral nutrition.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000900836

Sources and doses of nitrogen in the production of sunflower plants irrigated with saline water
Provedor de dados: 91
Autores: Nobre,Reginaldo G.; Sousa,Welligton B. da; Lima,Geovani S. de; Gheyi,Hans R.; Dias,Adaan S.; Pinheiro,Francisco W. A.
ABSTRACT The cultivation of sunflower allows its use as bio-fuel and alternative forage. It is a viable alternative in the semiarid regions. Current study evaluates the effect of saline water use, sources and doses of nitrogen fertilization on the production of sunflower in the experiment conducted in drainage lysimeters between May and August 2012, under protected conditions, at Pombal - PB Brazil. The experiment consisted of a randomized block design, with a 2 x 3 x 4 factorial arrangement and three replications. The treatments consisted of two levels of electrical conductivity of water - ECw (0.3 and 3.0 dS m-1), three sources of nitrogen (urea, ammonium sulfate and calcium nitrate) and four levels of N (40, 80, 120 and 160% of recommended dose - 100 mg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helianthus annuus L.; Electrical conductivity of water; Mineral nutrition.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662014001300059

New substrate containing agroindustrial carnauba residue for production of papaya under foliar fertilization
Provedor de dados: 91
Autores: Albano,Francisca G.; Cavalcante,Ítalo H. L.; Machado,Jailson S.; Lacerda,Claudivan F. de; Silva,Esdras R. da; Sousa,Humberto G. de.
ABSTRACT The use of organic waste in the composition of substrates for seedlings constitutes an alternative to the recycling of these materials. Thus, an experiment was conducted with the objective to evaluate the production of ‘Formosa’ papaya seedlings in substrate containing carnauba wax residue, under foliar fertilization. The experimental design was completely randomized with five replicates, with treatments distributed in a 5 x 2 factorial scheme, corresponding to five materials used as substrates, in the presence and absence of foliar fertilization. The materials used were: earthworm humus, carnauba residue + fresh rice husk; carnauba residue in powder; carnauba residue semi-decomposed and mixture of carnauba residues: carnauba residue + fresh rice...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carica papaya; Quality seedlings; Mineral nutrition.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000200128

Essential oil production of lemongrass (Cymbopogon citratus) under organic compost containing sewage sludge
Provedor de dados: 91
Autores: d'Ávila,Júlia V.; Martinazzo,Ana P.; Santos,Fabiana S. dos; Teodoro,Carlos E. de S.; Portz,Adriano.
ABSTRACT One of the main urban polluting agents are the sewers, which even with proper treatment end up generating a polluting waste, the sewage sludge. One of the options for the disposal of this sludge is the use in agriculture, due to its high content of organic matter and nutrients. This study aimed to use urban sewage sludge for lemongrass cultivation and essential oil production. The plants were grown in soil containing different organic compost doses (0, 5, 10, 20, 40 and 60 t ha-1), formed from the sewage sludge composting process and waste of urban vegetation pruning. At harvest, plants were analyzed for the concentration of nutrients, chlorophyll content, number of tillers, biomass production, essential oil content and the microbiological quality...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solid waste; Medicinal plant; Composting; Mineral nutrition.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000900811

Macronutrient and sodium content in maize plants under cassava wastewater fertilization
Provedor de dados: 91
Autores: Magalhães,Adriana G.; Rolim,Mario M.; Duarte,Anamaria de S.; Silva,Gerônimo F. da; Bezerra Neto,Egídio; Pedrosa,Elvira M. R.
ABSTRACT This study aimed to evaluate the content of macronutrients and sodium in corn ( Zea mays) plants as a function of different doses of cassava wastewater and ages of the plants after emergence. The experiment was conducted in a greenhouse in pots with capacity for 25 dm3 of soil, using a 5 × 3 factorial design with four replicates. The studied factors were doses of cassava wastewater: 0; 12.6; 25.2; 50.4; 75.6 m3 ha-1, and plant age: 20, 40 and 52 days after emergence (DAE). Potassium, calcium, magnesium, nitrogen, phosphorus, sodium and sulfur contents were evaluated in leaves and stalks. Nutritional deficiency of calcium was visible at 20 DAE. The increment in cassava wastewater doses increased N, P and K contents in plant shoots, but decreased Ca...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Residue reuse; Mineral nutrition.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000300215

Agronomic performance of beet cultivars as a function of phosphorus fertilization
Provedor de dados: 91
Autores: Silva,Gerlani A.; Grangeiro,Leilson C.; Sousa,Valdivia de F. L.; Silva,Luiz R. R.; Jesus,Priscila M. M.; Silva,Jorge L. A.
ABSTRACT The lack of phosphorus in soil affects the development and productivity of plants; however, in order for them to express the full potential, it is necessary to supply this nutrient. The objective of this study was to define adequate doses of phosphorus, which maximize the productivity and quality of four beet cultivars, and to identify among them the most efficient use of phosphorus. The experiment was carried out at the Rafael Fernandes Experimental Farm, of the Federal Rural Semi-Arid University, Mossoró, RN state, Brazil, from July to October 2016. The experimental design was a randomized block in a 4 x 4 factorial scheme with four repetitions, corresponding to four beet cultivars (Early Wonder, Fortuna, Kestrel and Cabernet) and four doses of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beta vulgaris L.; Productivity; Mineral nutrition; Soluble solids.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000700518

Cultivation of cherry tomato under irrigation with saline water and nitrogen fertilization
Provedor de dados: 91
Autores: Vieira,Ianne G. S.; Nobre,Reginaldo G.; Dias,Adaan S.; Pinheiro,Francisco W. A.
ABSTRACT The study was carried out from August 2013 to January 2014 to evaluate growth and production of cherry tomato cultivated under irrigation with water of different salinity levels and fertilized with different nitrogen (N) doses, in experiment conducted in drainage lysimeters under greenhouse conditions, at the Center for Agrifood Science and Technology of the Federal University of Campina Grande. The statistical design was randomized blocks in a 5 x 4 factorial scheme, with three replicates, and the treatments consisted of five levels of electrical conductivity of water (0.3, 1.5, 2.5, 3.5 and 4.5 dS m-1) and four N doses (60, 100, 140 and 180 mg kg-1). Growth and production variables of cherry tomato decrease linearly from the irrigation water...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lycopersicon esculentum Mill.; Salt stress; Mineral nutrition; Growth.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000100055

Saline water on the leaf mineral composition of noni under organic fertilization
Provedor de dados: 91
Autores: Souza,Maria C. M. R. de; Menezes,Ademir S.; Costa,Rafael S. da; Lacerda,Claudivan F. de; Amorim,Aiala V.; Ximenes,Antônia I. S.
ABSTRACT Salinity is one of the main agricultural problems faced, and may negatively influence plant development. However, studies have shown that in protected environments and under the application of organic fertilizers, deleterious effects are mitigated. In this context, the objective of this study was to evaluate the effects of irrigation water salinity on mineral nutrition in noni plants grown in two environments and bovine manure application. The statistical design was a randomized block design arranged in split-split plot scheme, with five repetitions. The plots consisted of the cultivation environments (greenhouse and open field), the subplots formed by salinity levels of irrigation water (ECw: 0.3, 1.5, 3.0, 4.5 and 6.0 dS m-1), and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morinda citrifolia; Bovine manure; Salt stress; Mineral nutrition.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000900687

MACRONUTRIENT CONCENTRATION AND CONTENT IN PASSION FRUIT LEAVES UNDER SAMPLING METHODS AND N-K FERTILIZATION RATES
Provedor de dados: 94
Autores: PEGORARO,RODINEI FACCO; LOPES,PAULO AUGUSTO PEREIRA; SILVA,DEIVISSON FERREIRA DA; MAIA,VICTOR MARTINS; MEDEIROS,ANANIAS COSTA.
ABSTRACT  Nitrogen and potassium fertilization and assessment of adequate nutritional status are essential for increasing fruit production of passion fruit. However, studies related to characterization of the leaf nutrient concentration and content in passion fruit with different production capacities are scarce in the literature in Brazil. The objective of this study was to evaluate macronutrient leaf concentration and content in different parts of the reproductive shoot of yellow passion fruit subjected to different ratios of N and K fertilization. The study was conducted in a randomized block design, with three replications, following a 4 x 6 factorial arrangement consisting of four cultivars of yellow passion fruit (BRS Gigante Amarelo, IAC 275, BRS...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Passiflora edulis Sims f. flavicarpa Deg; Nutrient content; Mineral nutrition; Cultivars.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000403001

Production of ‘Ubá’ mango tree submitted to rejuvenation pruning and fertilized with nitrogen
Provedor de dados: 94
Autores: Salomão,Luiz Carlos Chamhum; Siqueira,Dalmo Lopes de; Silva,Danielle Fabíola Pereira da.
Abstract  The rejuvenation pruning or plant prune is a practice used in fruits species such mango tree, whose plants can exceed ten meters heigh, compromising the implementation of practices such as spraying and harvesting. This study aimed to evaluate the resumption of production of adult ‘Ubá’ mango trees, previously pruned and subjected to fertilization with increasing levels of nitrogen over five seasons. The experiment was conducted in Visconde do Rio Branco, MG. Nineteen years old mango trees were pruned and reduced to the primary branches, about 1.5 m above the ground. Excess shoots were removed, remaining five to six branches per tree. In the year in which the plants were pruned, the nitrogen fertilization was initiated with different doses,...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Mangifera indica L.; Urea; Mineral nutrition.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000203002

Mineral composition of leaves and fruits of apple ‘Fuji’ on different rootstocks in the region of São Joaquim-SC
Provedor de dados: 94
Autores: Nava,Gilberto; Ciotta,Marlise Nara; Pasa,Mateus da Silveira; Boneti,José Itamar da Silva.
Abstract  This work evaluated the mineral composition of leaves and fruits of apple (Malus domestica Borkh) ‘Fuji’ on different rootstocks. The experiment was conducted from 2008 to 2011 in the municipality of São Joaquim (SC). The treatments evaluated rootstocks: CG.008, CG.24, CG.56, CG.058, CG.210, CG.213, CG.757, CG.814 and CG.969 of the American series Cornell Geneva (CG); JM.2 and JM.7 of the Japanese series Japan, Morioka (JM); and M.7, M.9 and M.26 of the English series, EMLA (M). The experimental design was randomized blocks with four repetitions. Annually, the leaves were collected for the chemical analysis. Only in the years 2009 and 2010, the fruit samples were collected to determine nitrogen (N), phosphorus (P), potassium (K), calcium (Ca) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus domestica; Mineral nutrition; Physiological disorders; Fruit quality.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000203001

Nutrient absorption and accumulation in ‘Paulista’ and ‘Sabará’ jabuticaba cultivars
Provedor de dados: 94
Autores: Souza,Janaina Canaan Rezende de; Rufini,José Carlos Moraes; Ferreira,Eric Victor de Oliveira; Guedes,Mayara Neves Santos; Ramos,Martha Cristina Pereira; Campos,Matheus Pena.
Abstract  The amount of nutrients accumulated and distributed in young jabuticaba trees are not yet well known. The aim of this work was to verify biomass production, nutrient accumulation and distribution in ‘Paulista’ and ‘Sabará’ jabuticaba seedlings. The experiment was conducted in greenhouse and seedlings were propagated by seeds and transplanted after 150 days into pots containing perlite and cultivated for 450 days in nutrient solution. Nutrient accumulation and distribution in the different plant organs (root, stem and leaves) were evaluated every 90 days. The mean total nutrient accumulation of ‘Paulista’ and ‘Sabará’ seedlings at 450 days were: N (706 and 611), P (81 and 62), K (541 and 409), Ca (488 and 424), Mg (66 and 54) and S (93 and 92) in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plinia caulifora; Plinia jaboticaba; Mineral nutrition; Nutrient; Fruticulture.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000501001

Characterization of nutrient deficiency in Hancornia speciosa Gomes seedlings by omitting micronutrients from the nutrient solution
Provedor de dados: 94
Autores: Bessa,Layara Alexandre; Silva,Fabiano Guimarães; Moreira,Marialva Alvarenga; Teodoro,João Paulo Ribeiro; Soares,Frederico Antônio Loureiro.
Hancornia speciosa Gomes (Mangaba tree) is a fruit tree belonging to the Apocynaceae family and is native to Brazil. The production of seedlings of this species is limited by a lack of technical and nutritional expertise. To address this deficiency, this study aimed to characterize the visual symptoms of micronutrient deficiency and to assess growth and leaf nutrient accumulation in H. speciosa seedlings supplied with nutrient solutions that lack individual micronutrients. H. speciosa plants were grown in nutrient solution in a greenhouse according to a randomized block design, with four replicates. The treatments consisted of a group receiving complete nutrient solution and groups treated with a nutrient solution lacking one of the following...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hancornia speciosa Gomes; Mineral nutrition; Symptoms; Growth.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452013000200034

IS Annona emarginata CAPABLE OF ACCUMULATE ESSENTIAL HEAVY METALS WITHOUT DAMAGES IN THE METABOLISM?
Provedor de dados: 94
Autores: BARON,DANIEL; AMARO,AMANDA CRISTINA ESTEVES; MACEDO,ANA CLAUDIA; BOARO,CARMEN SÍLVIA FERNANDES; FERREIRA,GISELA.
ABSTRACT  This study aimed to evaluate if ionic strength variation causes differential accumulation of heavy metals in plants of Annona emarginata (Schltdl.) H. Rainer var. ‘terra-fria’, modifying gas exchange and dry matter production. The seedlings were cultivated under different ionic strengths of the ‘Hoagland and Arnon’s’ nutrient solution (75% I, 50% I and 25% I). At 180 days after the application of the treatments, the effects of the essential heavy metals on the physiological parameters and foliar ionic concentration were assessed. The leaf gas exchanges and vegetative growth were affected by the variation in the essential heavy metals, with positive effects on the plants that were treated with 75%I. The seedlings that were grown under 75% I...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heavy metals; Ionic strength; Mineral nutrition; Photosynthesis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000400202

Characterization of the effects of macronutrient deficiencies in mangabeira seedlings
Provedor de dados: 94
Autores: Bessa,Layara Alexandre; Silva,Fabiano Guimarães; Moreira,Marialva Alvarenga; Teodoro,João Paulo Ribeiro; Soares,Frederico Antônio Loureiro.
Knowledge of the mineral nutrition requirements of mangabeira (Hancornia speciosa Gomes) is relatively scarce and rudimentary because there is a lack of consistent data concerning its nutritional demands at different developmental stages. The aim of this research was to characterize the visual symptoms of macronutrient deficiencies and to evaluate the effects of these deficiencies on the growth, the production of dry matter, and the leaf content of mangabeira. To achieve this goal, a greenhouse experiment was conducted at the Goiano Federal Institute (Instituto Federal Goiano) in Rio Verde - GO, from January to June 2011 in which mangabeira plants were arranged in a random block design and grown in nutrient solutions. This experiment was replicated four...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hancornia speciosa Gomes; Mineral nutrition; Hydroponics.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452012000400033

Accumulation and exportation of nutrients by yellow Passion fruit cv. IAC 275
Provedor de dados: 94
Autores: Mattar,Gabriel Stefanini; Moraes,Carolina Cinto de; Meletti,Laura Maria Molina; Purquerio,Luis Felipe Villani.
Abstract  The mineral nutrition is essential to increase yield and fruit quality of passion fruit. There is no information of nutrient accumulation throughout the production cycle. Thus, in order to assist in the correct nutrients supply and update the recommendations, studies involving cultivars and cultivation techniques are necessary. The aim of this study was to evaluate the plant growth, the nutrient accumulation and the exportation in plants of yellow passion fruit cv. IAC 275. The experimental design was a randomized block, with three replications, where the treatments were evaluation times. Stem length, dry mass matter and nutrient accumulation in aerial part (leaves and stems), fruits and roots were evaluated. The maximum daily accumulation rate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Passiflora edulis; Advanced seedling; Annual cultivation; Mineral nutrition; Phenology; Sustainability.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000300701

Assessment on nutrient levels in the aerial biomass of irrigated guava in São Francisco Valley, Brazil
Provedor de dados: 94
Autores: Maia,Joselanne Luiza Trajano; Bassoi,Luis Henrique; Silva,Davi José; Lima,Maria Auxiliadora Coelho de; Assis,Joston Simão de; Morais,Patricia Lígia Dantas de.
In perennial crops, fertilizers are applied to restore the amount of nutrient removed from the plant by harvesting. Nevertheless, the immobilized nutrient inside the whole plant should be considered. Based on it, the nutrient concentrations in the guava leaf and fruit and the nutrient contents removed by fruits and post-harvest pruning were evaluated in an irrigated orchard, in Petrolina, State of Pernambuco, Brazil. The greatest contents removed by fruits were N and K among the macronutrients, while Fe, Zn and Mn presented higher levels among the micronutrients. More than 60% of the total content of N, P, K, Mg, Fe, and B removed by pruning were immobilized in the leaf and non-marketable fruit.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Psidium guajava; Mineral nutrition; Foliar analysis; Fruit analysis.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452007000300054

Leaf nutritional levels in peach and nectarine grown in subtropical climate
Provedor de dados: 94
Autores: Leonel,Sarita; Souza,Manoel Euzébio De; Tecchio,Marco Antonio; Segantini,Daniela Mota.
The study evaluated the leaf nutritional levels of peach and nectarine trees under subtropical climate in order to improve the fertilization practices. The experiment was carried out in São Paulo state University, Botucatu, São Paulo State, Brazil. The experimental design consisted of subdivided plots, in which plots corresponded to cultivars and subplots to the leaf sample periods. The evaluated peach cultivars were: Marli, Turmalina, Precocinho, Jubileu, Cascata 968, Cascata 848, CP 951C, CP 9553CYN, and Tropic Beauty, and that of nectarine was 'Sun Blaze'. The sample periods were: after harvest, plants in vegetative period; dormancy; beginning of flowering and fruiting (standard sample). Results indicated significant variations in the levels of N, P, K,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prunus persica var. vulgaris; Prunus persica var. nucipersica; Mineral nutrition; Phenology.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452011000500105

Changes in mineral nutrition during fruit growth and development of ‘Seike’ and ‘Newhall’ navel orange as a guide for fertilization
Provedor de dados: 94
Autores: Fu,Xing-Zheng; Fa,Xie; Li,Cao; Li-Li,Ling; Chang-Pin,Chun; Liang-Zhi,Peng.
Abstract  Changes in the accumulation patterns of mineral nutrients at different development stages of fruit reflect the requirements of citrus trees for different nutrients, and this information provides an essential reference for rational fertilization. In this study, changes in the contents of 11 nutrients in the whole fruit, fruit pulp, and peel were studied during the whole developmental period of the fruit of ‘Seike’ and ‘Newhall’ navel oranges. We found that the two navel orange cultivars showed very similar changes in nutrients. Specifically, the N, P, Mg, S, Mn, and Zn contents were high in the young fruit stage (April), the K and Fe contents were high in the fruit expansion stage (July and August), and the Ca content was high in the fruit...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus; Fruit pulp; Peel; Mineral nutrition.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000503003

Influence of rootstock on nutrient content in grape petioles
Provedor de dados: 94
Autores: Dalbó,Marco Antonio; Schuck,Enio; Basso,Clori.
Genetic diversity of rootstocks can affect nutrient uptake and the nutrient status of grapevines. The rootstock influence on nutrient content in grape petioles was evaluated on three rootstocks competition experiments carried out at Vale do Rio do Peixe region, in the state of Santa Catarina, Brazil, with the cultivars Niagara Rosada, Concord, and Isabella, grafted on different rootstocks. Two soil liming depths were also evaluated in the Isabella experiment. The greatest rootstock effect was observed on K and Mg content and K/Mg ratio in the petioles. The Vitis vinifera x V. rotundifolia hybrid rootstocks VR 043-43 and VR 044-4 provided the highest K/Mg values and self rooted Isabella the lowest K/Mg ratio. The other tested rootstocks resulted in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mineral nutrition; Viticulture; Potassium; Magnesium.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452011000300030

Fruit quality of pineapple ‘Vitória’ under macronutrients and boron deficiency
Provedor de dados: 94
Autores: Cunha,Jéssica Morais; Freitas,Marta Simone Mendonça; Caetano,Luiz Carlos Santos; Carvalho,Almy Júnior Cordeiro de; Peçanha,Diego Alves; Santos,Paulo Cesar dos.
Abstract  The objective of this study was to evaluate the influence of macronutrient and boron deficiencies on physico-chemical characteristics of pineapple fruits, ‘Vitoria’ cultivar. The experimental design was a randomized complete block with eight treatments (complete solution, -N, -P, -K, -Ca, -Mg, -S and -B) and six replicates. The experiment was conducted from October 2016 to March 2018, and the variables evaluated were: fresh fruit and crown mass, fruit diameter, fruit and crown length, juice volume and mass, titratable acidity (TA), soluble solids (SS), vitamin C, juice pH and SS/TA ratio. All treatments with nutrient deficiency reduced the fresh fruit mass. In treatments -N and -Ca there was a reduction of 41.9 and 35.3%, respectively, in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ananas comosus var. comosus; Mineral nutrition; Fruit growing; Total soluble solids; Titratable acidity.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000503001

O teor de cálcio na casca é indicativo da suscetibilidade ao "bitter pit" em maçãs 'fuji'
Provedor de dados: 94
Autores: Amarante,Cassandro Vidal Talamini do; Ernani,Paulo Roberto; Steffens,Cristiano André; Argenta,Luiz Carlos.
Este trabalho objetivou identificar os atributos minerais na casca e na polpa, relacionados à severidade de "bitter pit" em maçãs 'Fuji'. Os frutos foram colhidos em pomar comercial do município de Lages-SC, e armazenados durante quatro meses em câmara fria convencional (0±0,4°C e 90-95% de umidade relativa). Posteriormente, foram separadas em quatro lotes, de acordo com a severidade de "bitter pit": nula (0 lesão/fruto), baixa (1-2 lesões/fruto), moderada (3-4 lesões/fruto) e alta (5-16 lesões/fruto), com 15 frutos (repetições) em cada nível de severidade. Os frutos de cada lote foram analisados individualmente quanto aos teores de Ca, Mg, K e N, na casca e na polpa. Na análise univariada dos teores minerais da polpa, observou-se aumento nos níveis de K e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus domestica; Fruit quality; Mineral nutrition; Physiological disorder; Multivariate analysis.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452011000100023

Pineapple yield and fruit quality effected by NPK fertilization in a tropical soil
Provedor de dados: 94
Autores: Spironello,Ademar; Quaggio,José Antonio; Teixeira,Luiz Antonio Junqueira; Furlani,Pedro Roberto; Sigrist,José Maria Monteiro.
There is a lack of information about fertilization of pineapple grown in the State of São Paulo, Brazil. So a field experiment with pineapple 'Smooth Cayenne' was carried out to study the effects of NPK rates on yield and fruit quality. The trial was located on an Alfisol in the central part of the State of São Paulo (Agudos county). The experimental design was an incomplete NPK factorial, with 32 treatments set up in two blocks. The P was applied only at planting, at the rates of 0; 80; 160 and 320 kg/ha of P2 0(5), as superphosphate. The N and K2O rates were 0; 175; 350, and 700 kg/ha, applied as urea and potassium chloride, respectively, divided in four applications during the growth period. Response functions were adjusted to yield or to fruit...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ananas comosus (L.) Merrill; Mineral nutrition; Growth; Soil fertility; Tropics.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452004000100041

Growth and nutrient accumulation in the aerial part of red Pitaya (Hylocereus sp.)
Provedor de dados: 94
Autores: Lima,Denise de Castro; Mendes,Nouglas Veloso Barbosa; Corrêa,Márcio Cleber de Medeiros; Taniguchi,Carlos Alberto Kenji; Queiroz,Ronialison Fernandes; Natale,William.
Abstract  Knowledge on the amounts of nutrients accumulated by pitaya in its different development stages allows defining the periods in which the essential elements are most required, thus contributing to the elaboration of rational fertilization programs for the crop, reducing production costs. This study aimed to evaluate the growth and nutritional requirement of red pitaya, estimating the accumulation of macro and micronutrients by the plants and determining the periods in which the greatest accumulations occur, as well as the relative growth rate and the relative nutrient absorption rate. Pitaya seedlings were planted in pots containing Argissolo Vermelho-Amarelo Eutrófico (Ultisol) and grown in the open air. The experimental design was randomized...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mineral nutrition; Cactaceae; Nutritional requirement.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000502001

Impacts of limestone and nitrogen top dressing application on the potassium content in the soil profile and marandu-grass leaf concentration
Provedor de dados: 96
Autores: Balieiro Neto,Geraldo; Reis,Ricardo Andrade; Ruggieri,Ana Cláudia.
The objective of this experiment was to evaluate the effects of nitrogen doses (0, 100, 200, 300, and 400 kg ha-1 year-1), with or without dolomitic lime covering application, on the potassium (K) soil content at depths varying form 0 to 5, 5 to 10, and 10 to 20 cm, and the potassium concentration in the plant. The experiment was carried out in a rhodic ferralsol with a slightly rolling relief, in a 5 × 2 factorial arrangement, in a complete randomized block design, with four replications. Nitrogenated fertilization caused a linear increase in the potassium concentration in the plant and also in the mineral content in the 0-5 cm soil layer. An effect of competitive inhibition occurred between the potassium and calcium absorption, and potassium and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mineral nutrition; Soil fertility; Urea; Urochloa.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000700002

The effect of supplementing sow and piglet diets with different forms of iron
Provedor de dados: 96
Autores: Novais,Aliny Kétilim; Silva,Caio Abércio da; Santos,Rita de Kássia Silva dos; Dias,Cleandro Pazinato; Callegari,Marco Aurélio; Oliveira,Eduardo Raele de.
ABSTRACT The objective of this study was to evaluate the effect of chelated iron supplementation on gestating and lactating sows and on their suckling and weaned piglets. Reproductive traits, piglet performance, hematological parameters, and the iron concentrations in colostrum, milk, and stillborn livers were measured. Ninety-six sows were subjected to one of three treatment groups. Group T1 comprised pregnant and lactating sows treated with diets supplemented with inorganic iron (551 mg Fe/kg) and suckling piglets administered 200 mg of injectable iron dextran. Group T2 was the same as T1, except that sows after 84 days of gestation, lactating sows, and suckling piglets were fed a diet supplemented with 150 mg Fe/kg of chelated iron, and suckling piglets...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hemoglobin; Micro mineral; Mineral nutrition; Organic mineral; Swine.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016001000615

Chlorine requirement for Japanese laying quails
Provedor de dados: 96
Autores: Costa,Fernando Guilherme Perazzo; Figueiredo Júnior,Jalceyr Pessoa; Lima,Denise Fontana Figueiredo; Goulart,Cláudia de Castro; Silva,José Humberto Vilar da; Lima,Matheus Ramalho de; Pinheiro,Sarah Gomes; Rodrigues,Valéria Pereira.
The objective of this study was to determine the chlorine nutritional requirement of Japanese Quails during the laying phase, based on performance and egg quality parameters. A total of 240 Japanese quails were distributed according to a randomized block design, with five treatments and six replicates, with 8 birds each. The experiment lasted 84 days, divided in four cycles of 21 days each. Treatments consisted of a basal diet formulated to meet the nutritional requirements, except for chlorine, and four supplementation levels with ammonium chloride, generating the levels 0.8; 1.6; 2.4; 3.2 and 4.0 g/kg. The parameters evaluated were: feed intake (g/bird/day), egg production (egg/bird/day), egg weight (g), egg mass (g), egg mass conversion (g/g),...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Coturnix coturnix japonica; Electrolyte balance; Mineral nutrition.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001000021

Effect of organic sources of minerals on fat-corrected milk yield of dairy cows in confinement
Provedor de dados: 96
Autores: Del Valle,Tiago Antonio; Jesus,Elmeson Ferreira de; Paiva,Pablo Gomes de; Bettero,Vitor Pereira; Zanferari,Filipe; Acedo,Tiago Sabella; Tamassia,Luis Fernando Monteiro; Rennó,Francisco Palma.
This study evaluated the effects of organic and inorganic sources of minerals in diets for mid-lactation dairy cows on milk yield and composition, intake and total apparent digestibility of dry matter and nutrients, blood parameters, microbial protein synthesis, and energy and protein balances. Twenty Holstein cows averaging 146.83±67.34 days in milk and weighing 625.30±80.37 kg were used. The experimental design was a crossover. Diets were composed of corn silage (50%), ground grain corn, and soybean meal, differing with regard to the sources of trace minerals, plus an organic and inorganic mix. The organic mineral source increased milk fat and fat-corrected milk yield without changing milk yield, intake, or total apparent digestibility. Blood parameters,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Holstein; Milk fat; Mineral nutrition; Organic mineral.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000300103

Production, nutritional status and chemical properties of soils with addition of cattle manure, reactive natural phosphate and biotite schist in Massai cultivar
Provedor de dados: 96
Autores: Moreira,Adônis; Fageria,Nand Kumar; Souza,Gilberto Batista de; Freitas,Alfredo Ribeiro de.
The objective of this work was to evaluate the effects of cattle manure, reactive natural phosphate and biotite schist on the soil fertility, yield and nutritional status of Megathyrsus spp. cv. Massai. The experiment was conducted under field conditions, in a dystrophic Red Yellow Latosol (Oxisol). It was used a randomized block experimental design with the following treatments: three natural reactive rock phosphate from Algeria (Djebel-Onk) doses (0, 100 and 200 kg ha-1 of P2O5), three biotite schist doses (0, 150 and 300 kg ha-1 of K2O) and three cattle manure doses (0, 20 and 40 t ha-1). The application of natural phosphate increased dry matter yield, however, application of cattle manure and biotite schist did not influence this variable. Foliar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative sources; Megathyrsus spp.; Mineral nutrition; Soil fertility.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000900004

Corrective phosphate application as a practice for reducing oxidative stress and increasing productivity in sugarcane
Provedor de dados: 124
Autores: Silva,Ariane Márcia de Sousa; Oliveira,Emídio Cantídio Almeida de; Willadino,Lilia Gomes; Freire,Fernando José; Rocha,Alexandre Tavares da.
ABSTRACT Corrective phosphate application increases the levels of phosphorus (P) in the surface layer of the soil, stimulates plant root growth and increases the volume of soil exploited for water and nutrient uptake, which may reduce abiotic oxidative stress in sugarcane. The aim of this study was to evaluate the productivity and the response of the antioxidant enzyme system in sugarcane when grown in soil that received corrective phosphate application, using doses and sources of P of varying solubility. The experiment was conducted under field conditions in the southern Forest Zone of the State of Pernambuco, Brazil. The treatments were arranged in a randomised block design, in a (4 × 3) +1 factorial scheme with four replications. The factors consisted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum spp.; Phosphorous; Antioxidant enzymes; Mineral nutrition.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000200188

Spectral indexes for identification of nitrogen deficiency in maize
Provedor de dados: 124
Autores: Romualdo,Liliane Maria; Luz,Pedro Henrique de Cerqueira; Baesso,Murilo Mesquita; Devechio,Fernanda de Fatima da Silva; Bet,Jessica Angela.
ABSTRACT Image analysis can provide information extracted from the leaves of crops, and contribute to early identification of nutrient deficiency. The objective of this study was to recognize nutritional nitrogen (N) patterns in maize plants, at the V4 and V7 stages, using digital image analysis based on spectral indexes. The experiment was carried out in a greenhouse under hydroponic cultivation. Treatments consisted of a completely randomized design, in a 4 × 2 factorial arrangement, with four replications. The factors were constituted by the doses of N (0; 3.0; 6.0 e 15 mmol L-1) combined at V4 and V7. In each stage, digital images were taken of leaf blades, with subsequent chemical composition and image analysis. For image recognition and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays L.; Image analysis; Mineral nutrition; Image processing.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000200183

Growth and gas exchange in white pitaya under different concentrations of potassium and calcium
Provedor de dados: 124
Autores: Cajazeira,João Paulo; Corrêa,Márcio Cleber de Medeiros; Almeida,Edmilson Igor Bernardo; Queiroz,Ronialison Fernandes; Mesquita,Rosilene Oliveira.
ABSTRACT Agriculture in Brazil has improved at a fast pace in recent years, given the growing demand for quality and the need for new products. In this respect, white pitaya [Hylocereus undatus (Haw.) Britton &amp; Rose] has become a feasible alternative for Northeast farmers. The limiting factors include a small amount of data on plant mineral nutrition and crop growth (phenology). Therefore, this study goal was to evaluate the effect of different concentrations of potassium (K) and calcium (Ca) on crop development and gas exchange in white pitaya grown in the coastal region of the state of Ceará, in Brazil. Sixteen treatments with three repetitions were organized in a completely randomized block design and a 4 × 4 factorial arrangement. Treatments...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hylocereus undatus; Cactaceae; Nutrient interaction; Mineral nutrition.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000100112

Effect of fertilisation with urea on development in the ornamental bromeliad Aechmea fasciata
Provedor de dados: 124
Autores: Giampaoli,Patricia; Santos,Daniela Soares dos; Mollo,Luciana; Kanashiro,Shoey; Tavares,Armando Reis.
ABSTRACT The aim of this study was to evaluate the effect of urea fertiliser on the bromeliad, Aechmea fasciata. Plants were submitted to weekly treatments with a solution of 0.0, 0.5, 1.0, 1.5 or 2.0 g urea L-1. After 210 days of the experiment, biometric variables of growth and development of the root and shoot systems were analysed, together with foliar levels of chlorophyll a and b, and of carotenoids. The experimental design was of randomised blocks with four replications; eight plants were used per plot. The data were submitted to regression analysis. The highest values for chlorophyll a and carotenoid content were obtained at a concentration of 1.23 g L-1 urea, and for chlorophyll b at a concentration 1.75 g L-1 urea. Plants of A. fasciata submitted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bromeliaceae; Nitrogen; Mineral nutrition; Chlorophyll.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000400657

Zinc fertilization in cowpea cultivars
Provedor de dados: 124
Autores: Melo,Francisco de Brito; Cardoso,Milton José; Andrade Júnior,Aderson Soares de; Ribeiro,Valdenir Queiroz.
ABSTRACT Zinc (Zn) is an essential micronutrient for plants, due to its role as a functional, structural, or regulatory cofactor in a large number of enzymes. The element is necessary for the synthesis of tryptophan, which is a precursor of indoleacetic acid. The aim of this study was to evaluate the behavior of two cowpea cultivars fertilized with four doses of Zn (0.0, 2.0, 4.0, and 6.0 kg of Zn ha-1) regarding dry grain yield (PGS), in addition to quantifying leaf and grain Zn content and grain crude protein. The experiment was conducted in the town of Brejo, in the state of Maranhão, Brazil. A 4 x 2 factorial scheme was used with four replications. Response functions were adjusted by calculating the Zn doses which provided a maximum technical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mineral nutrition; Vigna unguiculata (L.) Walp; Grain yield.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000500739

Production, water consumption and nutrient content of Chinese cabbage grown hydroponically in brackish water
Provedor de dados: 124
Autores: Lira,Raquele Mendes de; Silva,Ênio Farias de França e; Silva,Gerônimo Ferreira da; Santos,Alexandre Nascimento dos; Rolim,Mário Monteiro.
ABSTRACTUnderground water reserves in the semi-arid region of Brazil are stored in the crystal formations that in large part have high concentrations of salt. However, the scarcity of this resource makes the use of this water necessary for various activities, including agriculture. The aim of this study was to evaluate the use of brackish water on the electrical conductivity and pH of the nutrient solution, and on the production, water consumption and the uptake of nutrients in Chinese cabbage (Brassica pekinensis L.) under a hydroponic system. The experimental design was completely randomised, with four replications and six levels of water salinity (0.2, 1.2, 2.2, 3.2, 4.2 and 5.2 dS m-1), obtained by adding NaCl to the local water supply, with this water...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brassica pekinensis L.; Nutrient solution; Salinity; Mineral nutrition.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902015000300497

Growth, nutrition and efficiency in the transport, uptake and use of nutrients in african mahogany
Provedor de dados: 124
Autores: Souza,Aline das Graças; Smiderle,Oscar José; Chagas,Edvan Alves; Alves,Márcia Souza; Fagundes,Paulo Renato de Oliveira.
ABSTRACT African mahogany is a species preferred by many entrepreneurs as an investment in the forestry sector. However, there are few studies or research on the species, especially in Brazil. The aim of this work was to study the efficiency of nutrient uptake, accumulation, distribution and use in Khaya ivorensis and Khaya senegalensis, in addition to aspects of growth variables and of dry matter partitioning as a function of mineral fertilisation. Morphological, physiological and nutritional parameters were determined in the African mahogany plants 140 days after transplanting (DAT). The greatest zinc (Zn) content was detected in the shoots of both the Khaya ivorensis and Khaya senegalensis plants, accounting for more than 50% of the accumulated total of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Khaya senegalensis; Khaya ivorensis; Seedling production; Nutrient partitioning; Mineral nutrition.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000200404

Absorção de macronutrientes por porta-enxertos e cultivares de videira em hidroponia
Provedor de dados: 63
Autores: Albuquerque,Teresinha Costa Silveira de; Dechen,Antonio Roque.
A proposta deste trabalho foi detectar a capacidade de absorção de macronutrientes nos porta-enxertos de videira ‘Tropical‘ - IAC 313, ‘Jales‘ - IAC 572, ‘Campinas‘ - IAC 766, ‘Dog Ridge‘, ‘Salt Creek‘ e ‘Harmony‘ de possível utilização para as cultivares Thompson Seedless e Italia. Os porta-enxertos e as produtoras foram propagados por estacas semi-lenhosas com 2 gemas, enraizadas em areia grossa lavada até que o sistema radicular permitisse o transplantio para recipientes de 3L de volume, contendo 2 partes de sílica e 1 parte de areia grossa. As mudas foram uniformizadas através de poda, tanto do sistema radicular quanto da parte aérea. A solução nutritiva foi aplicada por irrigação em sistema fechado de gotejamento, acionado por temporizador. Quando as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis sp.; Uva apirena; Porta-enxerto; Nutrição mineral; Vitis sp.; Seedless grapevines; Rootstock; Mineral nutrition.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162000000100022

Calibration of cardy-ion meters to measure nutrient concentrations in soil solution an in plant sap
Provedor de dados: 63
Autores: Folegatti,Marcos Vinícius; Blanco,Flávio Favaro; Boaretto,Rodrigo Marcelli; Boaretto,Antônio Enedi.
Fertigation management requires rapid and accurate methods to determine nutrient concentrations in soil solution and in plant sap. This study was developed to evaluate the performance of cardy-ion meters (CIM) for the determinations of NO3-, K+ and Na+ concentrations in soil solution and tomato plant sap, for fertigation management purposes. Tomato was cultivated in a greenhouse with different levels of N, K and Na in the irrigation water. Soil solution was collected by suction at the 15 cm depth with porous ceramic cups and the concentrations of NO3-, K+ and Na+ were determined by CIM and also in the laboratory by standard methods. At the end of the cropping season, 50 leaf samples were also collected and concentrations of the nutrients in the petiole sap...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ion electrodes; Fertigation; Mineral nutrition; Soil solution extractor; Tomato.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000100002

Manganese and zinc leaf application on common bean grown on a "Cerrado" soil
Provedor de dados: 63
Autores: Teixeira,Itamar Rosa; Borém,Aluízio; Araújo,Geraldo Antônio de Andrade; Fontes,Renildes Lúcio Ferreira.
The occurrence of micronutrient deficiencies, mainly of manganese (Mn) and zinc (Zn) in "cerrado" soils, has been increasing in several crops, including bean. Such a problem is caused by high rates of liming material applied entirely on the soil surface. In this study, the effects of the leaf application of Mn and Zn rates were evaluated. Three experiments were carried out: two in greenhouse and one under field conditions. The greenhouse experiments were set up using a randomized block design and a 5 x 5 factorial, with three replicates, consisting of five rates of Mn (0, 75, 150, 300, and 600 g ha-1) and five rates of Zn (0, 50, 100, 200, and 400 g ha-1) applied via leaves at the 25th day, or both alternatively parceled at 25 and 35 days after emergency...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Yield; Mineral nutrition; Micronutrients.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000100013

DRIS: concepts and applications on nutritional diagnosis in fruit crops
Provedor de dados: 63
Autores: Mourão Filho,Francisco de Assis Alves.
Nutrition and fertilization are important factors in determining fruit yield and fruit quality. There are several methods for plant nutritional status diagnosis, among them, two are relevant and named as Sufficiency Range Approach (SRA) and Diagnosis and Recommendation Integrated System (DRIS). This research reports the main concepts and applications of DRIS in nutritional diagnosis of fruit crops, comparing it with current nutritional diagnosis methods, indicating advantages and disadvantages, and possible limitations to be investigated.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Foliar analysis; Fruit crops; Mineral nutrition.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000500015

Nitrogen fertilization of fall panicum cultivars (Panicum dichotomiflorum Michx.): biochemical and agronomical aspects
Provedor de dados: 63
Autores: Soratto,Rogério Peres; Lima,Eduardo do Valle; Silva,Tiago Roque Benetoli da; Boaro,Carmen Sílvia Fernandes; Cataneo,Ana Catarina.
Information on improved fall panicum cultivars and agronomical pratices is scarce because of the relatively small importance of this crop in Brazil. The present study aimed to evaluate levels of nitrogen sidedressing on plant development and biochemical characteristics of two fall panicum cultivars. The experiment was set up under plastic tunnel conditions in Botucatu, São Paulo, Brazil, with plants growing inside asbestos-cement boxes. The experimental design was a randomized block setup and treatments consisted of six levels of nitrogen fertilization (0, 40, 80, 120, 160, and 200 mg L-1) applied at the onset of tillering on two fall panicum cultivars (AL Mogi and AL Tibagi). The application of increasing levels of nitrogen to fall panicum plants...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitrogen; Sidedressing fertilization; Mineral nutrition.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000100014

Growth retardants and nutrition characteristics of the Thompson seedless and Italia grape cultivars
Provedor de dados: 63
Autores: Albuquerque,Teresinha Costa Silveira de; Dechen,Antonio Roque; Castro,Paulo Roberto de Camargo e.
Two experiments were carried out in a greenhouse to evaluate the variability in macronutrient contents in relation to growth regulator sprays on ‘Thompson Seedless’ and ‘Italia’ grapevines. The treatments were: chlormequat - 1,500mg L-1; daminozide - 3,000mg L-1; uniconazole - 30mg L-1; mepiquat chloride - 300mg .L-1 and control. The cuttings were grafted on the ‘Tropical’ rootstock and were rooted in sand. After 105 days of growth they were transplanted to 35L pots with a mixture of 1:1:1 volume of sand, soil and organic matter. Grapevines were pruned each 150 days, leaving two canes with six buds each for the ‘Italia’ cultivar and with fifteen buds for the ‘Thompson Seedless’ cultivar. Water was supplied through drip irrigation (1L/plant/day). Grapevines...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis sp.; Growth regulator; Mineral nutrition.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162000000100009

Nutrient content of biomass components of Hamlin sweet orange trees
Provedor de dados: 63
Autores: Mattos Jr.,Dirceu; Quaggio,José Antônio; Cantarella,Heitor; Alva,Ashok Kumar.
The knowledge of the nutrient distribution in trees is important to establish sound nutrient management programs for citrus production. Six-year-old Hamlin orange trees [Citrus sinensis (L.) Osb.] on Swingle citrumelo [Poncirus trifoliata (L.) Raf. x Citrus paradisi Macfad.] rootstock, grown on a sandy Entisol in Florida were harvested to investigate the macro and micronutrient distributions of biomass components. The biomass of aboveground components of the tree represented the largest proportion of the total. The distribution of the total tree dry weight was: fruit = 30.3%, leaf = 9.7%, twig = 26.1%, trunk = 6.3%, and root = 27.8%. Nutrient concentrations of recent mature leaves were in the adequate to optimal range as suggested by interpretation of leaf...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus sinensis; Mineral nutrition; Dry matter; Chemical analysis; Nutrient distribution.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000100023

Leaf nutrient contents of rangpur lime rootstock as afected by N, P, K, Ca and S fertilization
Provedor de dados: 63
Autores: Ruschel,Jonas; Carmello,Quirino Augusto de Camargo; Bernardi,Alberto Carlos de Campos; Carvalho,Sérgio Alves de; Mattos Jr.,Dirceu.
Analysis of leaf nutrient contents can demonstrate plant nutritional status, identify symptoms of deficiency and toxicity, and evaluate the need to adjust fertilization programs. This research determined N:P:K:Ca:S rates for optimal nutrition of Rangpur lime - RL (Citrus limonia Osb.) rootstock, in an experiment arranged in a fractional factorial design of the (¹/25) 5(4) type, with 25 treatments distributed within five blocks. Seedlings of RL were transplanted into 3.8-dm³ containers filled with commercial growing media, when plant height = 10 cm, in a nursery. Treatments consisted of the following nutrient rates (g per plant): N = 0.31, 0.62, 1.25, 2.5 and 5; K = 0.4, 0.62, 1.25, 2.5 and 5; P = 0.35, 1.0, 2.0, 3.0 and 4.0; and Ca = 3.5, 5.0, 6.0, 7.0 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus limonia; Mineral nutrition; Leaf analysis; Response surface.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000500007

Nutritional diagnosis for eucalypt by DRIS, M-DRIS, and CND
Provedor de dados: 63
Autores: Silva,Gualter Guenther Costa da; Neves,Júlio César Lima; Alvarez V.,Víctor Hugo; Leite,Fernando Palha.
The evaluation of the nutritional status in eucalypt (Eucalyptus grandis W. Hill ex Maid.) forests through vegetal tissue analyses what reflects water and nutrient flows in the system, and represents a complementary tool to soil analysis can be helpful to raise and maintain the forest productivity at high levels. This study compared the use of the Diagnosis and Recommendation Integrated System (DRIS), Modified-DRIS (M-DRIS), and Compositional Nutrient Diagnosis (CND) diagnose methods in eucalypt stands in Central-Eastern Minas Gerais State, Brazil. Data of productivity and of N, P, K, Ca, and Mg leaf contents in 993 Eucalyptus grandis stands aging between 72 and 153 months, planted on six sites in 3 ´ 2 m spacing, were used. The nutritional status was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eucalyptus grandis; Leaf analysis; Leaf diagnosis; Mineral nutrition.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000500008

Nutrient contents and production of rocket as affected by nitrogen concentrations in the nutritive solution
Provedor de dados: 63
Autores: Cavarianni,Rodrigo Luiz; Cecílio Filho,Arthur Bernardes; Cazetta,Jairo Osvaldo; May,André; Corradi,Mariana Marotti.
Empiricism in the use of nutrient solutions is frequent. Several times the same nutrient solution is used to grow different species based only on morphological similarities. This practice may lead to nutritional imbalances, affecting not only the production but also the quality of the product due to an accumulation of nitrate. An experiment under hydroponic conditions - the NFT system - was conducted with the aim of evaluating the effect of the concentration of nitrogen in the nutrient solution on the production and on the nutrient and nitrate contents of rocket (Eruca sativa) salad leaves. The experiment was carried out in spring 2003, in a randomized block design and in a 4 x 3 factorial design, with four replicates. Four nitrogen concentrations in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eruca sativa; Diplotaxis tenuifolia; Hydroponic system; Cultivar; Mineral nutrition.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000600013

Calcium, potassium and magnesium treatment of Chrysanthemum morifolium cv. "Bi Time" and callogenesis in vitro
Provedor de dados: 63
Autores: Borgatto,Fábio; Dias,Carlos Tadeu dos Santos; Amaral,Antônio Francisco Campos; Melo,Murilo.
The chemical composition and vegetative vigor of the donor plant are essential for the satisfactory performance of explants in vitro. In order to test the effect of potassium, calcium and magnesium nutritional status of Chrysanthemum morifolium plants on callogenesis in vitro, pot plants growing in sand were irrigated with nutrient solution containing different levels of potassium (0; 58.5; 117 and 234 mg L-1), calcium (0; 50; 100 e 200 mg L-1) and magnesium (0;12; 48 e 96 mg L-1). After 30 and 45 days, explants (shoot segments and leaf discs) were collected, desinfected and inoculated on MS solid medium supplemented with 0.1 mg L-1 of kinetin and 5.0 mg L-1 of nafthalene acetic acid for callogenesis induction. Callogenesis evaluated as callus fresh weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Matrix plant; Mineral nutrition; Tissue culture.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162002000400011

Sources and rates of potassium for sweet orange production
Provedor de dados: 63
Autores: Quaggio,José Antonio; Mattos Junior,Dirceu; Boaretto,Rodrigo Marcelli.
Fruit yield and quality of citrus trees (Citrus spp.) is markedly affected by potassium (K) fertilization. Potassium chloride is the major source of K, even though other sources are also available for agricultural use when crops are sensitive to chloride or where potential for accumulation of salts in soils exists. Only few studies addressed the effect of K sources on yield and quality of citrus fruits. Therefore, the present study was conducted to evaluate K2SO4 and KCl fertilizer sources at 0, 100, 200, and 300 kg ha-1 per year K2O on fruit yield and quality of 'Pêra' and 'Valencia' sweet orange trees in the field. The experiments were carried out in a 4 × 2 factorial design under randomized complete blocks, with four replicates from 2001 to 2004. Fruit...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus sinensis (L.) Osbeck; Chloride; Sulfate; Mineral nutrition; Nutrient management.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000300015

Simple procedure for nutrient analysis of coffee plant with energy dispersive X-ray fluorescence spectrometry (EDXRF)
Provedor de dados: 63
Autores: Tezotto,Tiago; Favarin,José Laércio; Paula Neto,Ana; Gratão,Priscila Lupino; Azevedo,Ricardo Antunes; Mazzafera,Paulo.
Nutrient analysis is used to estimate nutrient content of crop plants to manage fertilizer application for sustained crop production. Direct solid analysis of agricultural and environmental samples by energy dispersive X-ray fluorescence spectrometry (EDXRF) was chosen as alternative technique to evaluate the simultaneous multielemental quantification of the most important essential elements in coffee (Coffea arabica L.) plants. Inductively coupled plasma atomic emission spectrometry and certified reference materials made from leaves were used to calibrate and check the trueness of EDXRF method for the determination of the concentration of several nutrients in coffee leaves and branches. Fluorescence spectrometry proved to be advantageous and presented low...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica; Metal toxicity; Mineral nutrition; Analytical procedure.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000400007

Uptake and translocation of nitrogen, phosphorus and calcium in soybean infected with Meloidogyne incognita and M. javanica
Provedor de dados: 102
Autores: CARNEIRO,RUI G.; MAZZAFERA,PAULO; FERRAZ,LUIZ CARLOS C.B.; MURAOKA,TAKASHI; TRIVELIN,PAULO CESAR O.
Two soybean (Glycine max) cultivars were used in this study, Ocepar 4, rated as moderately resistant to Meloidogyne incognita race 3 but susceptible to M. javanica, and 'BR 16', susceptible to both nematodes. The effect of nematodes infection on the uptake and transport of N, P and Ca to the shoot was studied in plants growing in a split root system. The upper half was inoculated with 0, 3,000, 9,000 or 27,000 eggs/plant while the lower half received 15N, 32P or 45Ca. Infected plants showed an increase of root but a decrease of shoot mass with increasing inoculum levels. In general, total endogenous nutrients increased in the roots and tended to decrease in the shoots with increasing inoculum levels. When concentrations were calculated, there was an...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mineral nutrition; Nematodes; Nutrient uptake.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582002000200004

Effect of nitrogen fertilization on the physical and physicochemical characteristics and antioxidant potential of sapodilla ( Manilkara zapota L. P.Royen) at different stages of development
Provedor de dados: 109
Autores: Nascimento-Costa,Laíse; Souza-Freitas,Wallace Edelky de; Morais,Patrícia Lígia Dantas-de; Morais,Divanóvina Laís-de; Mendonça,Vander.
Abstract This study aimed to evaluate the effect of nitrogen fertilization on the physical and physico-chemical characteristics and antioxidant potential of sapodilla at different stages of development. The experiment was installed at the Norfruit farm, located in the rural community of Pau Branco, Mossoró/RN, Brazil. A randomized block with two factorial schemes experimental design, was adopted. The first 5 x 6 with lost parcels, consisting of five doses of nitrogen (N) (0, 300, 600, 900 and 1200 g of N.plant-1) and six stages of fruit development; and the second 2 x 3 consisting of two levels of nitrogen (N) (0; 600 g of N plant-1) and three stages of development, both with five replications. The fruits were labeled with a 10 to 15 mm long mark in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioactive compounds; Chemical composition of fruits; Mineral nutrition; Ripening.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000400480

Nutrient accumulation models in the banana ( Musa AAA Simmonds cv. Williams) plant under nitrogen doses
Provedor de dados: 109
Autores: Torres Bazurto,Jaime; Sanchez,Jaiver Danilo; Cayón Salinas,Daniel Gerardo.
Abstract This research determined the effect of four nitrogen (N) doses on the nutritional behavior of '(N), potassium (K), phosphorus (P), calcium (Ca) and magnesium (Mg), respectively, in banana Williams, during five plant development stages and two productive cycles. The treatments were as follows: 1) absolute control, 2) 0 N, 3) 161 kg N ha-1, 4) 321.8 kg N ha-1 and 5) 483 kg N ha-1, respectively. A multivariate approach of the differences among cycles was used to adjust the models and eliminate their individual effect, with a randomized complete block design with repeated measurements over time. There were significant differences among plant development stages, with an increase in nutrient accumulation in the banana plant, there were no differences...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilization; Major elements; Mineral nutrition; Musaceae; Plant physiology.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000300391

Nutritional contents in Myrciaria dubia plants in function of in Potassium doses applied through fertigation
Provedor de dados: 109
Autores: Abanto-Rodríguez,Carlos; Alves Chagas,Edvan; Farias Araújo,Wellington; Gongalves Paulichi,Matheus; García de Lima,Jodo Vitor; Medeiros de Oliveira,Eduardo; Lopes Monteiro Neto,Jodo Luiz; da Silva Maia,Sonicley; Sanchez-Choy,José; Panduro Tenazoa,Nadia Masaya.
Abstract The objective in this study was to determine the nutrient contents in Myrciaria dubia plants in function of five K2O doses (0, 40, 80, 120 and 160 kg ha-1) applied through fertigation. Leaf dry matter (LDM), total dry matter (TDM), and leaf nutrient contents were evaluated. The LDM and TDM were higher in plants subjected to the dose of 160 kg ha-1 of K2O, with 52.44 g and 302.69 g, respectively. Leaf N and K contents were 22.15 and 9.48 g kg-1 in response to 160 kg ha-1 of K2O. The mean P, Ca and S contents were 1.6, 17.89 and 1.61 g kg-1, respectively, and the content of Mg2 + decreased from 5.62 to 2.74 g kg-1 at the dose of 0 and 160 kg ha-1 of K2O, respectively. The B, Mn and Fe contents decreased from 136.5 to 100.0, 346.24 to 248, and from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agronomic management; Camu-camu; Caqari; Leaf analysis; Mineral nutrition.
Ano: 2019
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122019000400291

Combinações de doses de molibdênio e nitrogênio na adubação da cultura do feijoeiro-comum - DOI: 10.4025/actasciagron.v31i2.7033
Provedor de dados: 1
Autores: Araújo, Paulo Roberto de Andrade; UFV; Araujo, Geraldo Antonio de Andrade; UFV; Rocha, Paulo Roberto Ribeiro; UFV; Carneiro, José Eustáquio de Souza; UFV.
Foram conduzidos dois experimentos em Coimbra, Estado de Minas Gerais, um no verão-outono e outro na primavera-verão com o objetivo de avaliar o efeito de diferentes doses de molibdênio e nitrogênio sobre o feijoeiro, cultivar Meia Noite, utilizando delineamento em blocos casualizados, com quatro repetições, e esquema fatorial 4 x 2 x 2, envolvendo quatro níveis de molibdênio (0, 40, 80 e 120 g há-1) aplicados em pulverização foliar aos 25 dias após a emergência das plantas, duas doses nitrogênio aplicadas na semeadura (0 e 20 kg há-1) e aplicadas duas doses de nitrogênio em cobertura (0 e 50 kg há-1). Tanto na presença como na ausência de nitrogênio na semeadura ou cobertura, o incremento da dose de molibdênio até 80 g há-1 eleva o número de vagens por...
Palavras-chave: 5.01.00.00-9 Agronomia Phaseolus vulgaris; Adubação foliar; Nutrição mineral Phaseolus vulgaris; Foliar fertilization; Mineral nutrition.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/7033

Nitrogênio em cobertura e molibdênio via foliar no feijoeiro irrigado cultivado em solo de cerrado - doi: 10.4025/actasciagron.v33i4.6387
Provedor de dados: 1
Autores: Biscaro, Guilherme Augusto; Universidade Federal da Grande Dourados; Freitas Junior, Nasir Augusto de; Universidade Estadual de Mato Grosso do Sul; Soratto, Rogério Peres; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Kikuti, Hamilton; Universidade Estadual de Mato Grosso do Sul; Goulart Junior, Sidney Antonio Roseiro; Universidade Estadual de Mato Grosso do Sul; Aguirre, Washington Marques; Universidade Estadual de Mato Grosso do Sul.
O nitrogênio é o nutriente exigido em maior quantidade pelo feijoeiro e, mesmo quando suprida adequadamente desse nutriente, a planta de feijão pode ter sua produtividade limitada pela deficiência de molibdênio, pela participação deste no metabolismo do nitrogênio. O objetivo deste trabalho foi avaliar a resposta do feijoeiro (Phaseolus vulgaris L.), cultivar ‘BRS Pontal’, irrigado, à aplicação de nitrogênio em cobertura e molibdênio via foliar, quando cultivado em Neossolo Quartzarênico, no município de Cassilândia, Estado do Mato Grosso do Sul. O delineamento experimental foi o de blocos ao acaso, no esquema fatorial 4 x 2, com quatro repetições. Os tratamentos foram constituídos de quatro doses de nitrogênio (0, 30, 60 e 120 kg ha-1) aplicados em...
Palavras-chave: Produção vegetal Phaseolus vulgaris; Adubação nitrogenada; Adubação foliar; Nutrição mineral; Molibdato de amônio; Ureia Phaseolus vulgaris; Nitrogen fertilization; Leaf application; Mineral nutrition; Ammonium molybdate; Urea.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6387

Nutrição do feijoeiro e intensidade da antracnose em função da aplicação de silício e cobre - DOI: 10.4025/actasciagron.v31i2.7037
Provedor de dados: 1
Autores: Moraes, Sylvia Raquel Gomes; USP; Pozza, Edson Ampélio; UFLA; Pozza, Adélia Aziz Alexandre; UFLA; Carvalho, Janice Guedes de; UFLA; Souza, Paulo Estevão de; UFLA.
O objetivo deste trabalho foi avaliar o efeito do silicato de cálcio e do sulfato de cobre na intensidade da antracnose e no teor nutricional do feijoeiro. O experimento foi conduzido em blocos casualizados em arranjo fatorial 4 x 4 (quatro doses de silicato de cálcio, com quatro doses de sulfato de cobre) e dois tratamentos adicionais (plantas não-inoculadas e plantas pulverizadas com Benomyl). Foram feitas quatro avaliações da incidência e da severidade da doença, além de se mensurar a área foliar total. Ao término das avaliações, os dados de incidência e de severidade foram integrados ao longo do tempo, obtendo-se a área abaixo da curva de progresso da incidência (AACPI) e da severidade (AACPS). Os teores de N, P, K, Ca, Mg, B, Cu, Fe, Mn, Zn, Si e...
Palavras-chave: 5.01.00.00-9 Agronomia Colletotrichum lindemuthianum; Phaseolus vulgaris; Manejo integrado; Nutrição mineral Colletotrichum lindemuthianum; Phaseolus vulgaris; Integrated management; Mineral nutrition.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/7037

Nutritional status, yield and composition of peach fruit subjected to the application of organic compost
Provedor de dados: 1
Autores: Melo, George Wellington Bastos de; Sete, Paula Beatriz; Ambrosini, Vitor Gabriel; Freitas, Rafael Fernando; Basso, Alex; Brunetto, Gustavo.
The purpose of this study was to evaluate the nutritional state, yield and composition of peaches on peach trees subjected to the application of organic compost to the soil. This experiment was conducted during the 2008 and 2009 cropping season in an orchard containing Chimarrita cultivars grafted onto Capdeboscq rootstocks and Haplumbrept soils in the municipality of Farroupilha (RS), Brazil. The treatments included 0, 9, 18, 36, 72 and 144 liters of organic compost per plant-1 year-1. The total nutrient contents in the leaves, yield components, yields per plant and hectare and compositions of the fruits were evaluated in 2008 and 2009 soon after harvest and after 30 days of storage. The application of organic compost to the soil increased the yield...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mineral nutrition; Organic waste; Prunus persica.
Ano: 2016
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/25638

Resposta da couve-da-Malásia (Brassica chinensis L. var. parachinensis (Bailey) Sinskaja) à deficiência nutricional - DOI: 10.4025/actasciagron.v31i2.844
Provedor de dados: 1
Autores: Mota, Geraldo Magella Flôres da; UFU; Sousa, Egilson Roque; UFU; Ranal, Marli Aparecida; UFU.
Brassica chinensis var. parachinensis é uma hortaliça folhosa, de ciclo curto, introduzida no Brasil em 1992, em função de sua excelente qualidade nutricional. Apresenta elevado teor de &amp;beta;-caroteno, vitamina C, Ca e Fe, o que a torna importante alimento, especialmente no combate à anemia. Este trabalho teve como objetivo avaliar a produtividade biológica e agronômica da couve-da-Malásia, cultivada sob deficiência de N, P, K, Ca, Mg, S, B, Cu, Fe, Mn, Mo e Zn e comparada com o tratamento-testemunha que incluiu todos os macro e micronutrientes. As plantas cultivadas na ausência de N e P conseguiram completar o ciclo, mas foram significativamente menos produtivas e pouco desenvolvidas em relação às que receberam nutrição completa. Além disso,...
Palavras-chave: 5.01.00.00-9 Agronomia Brassicaceae; Couve chinesa sem cabeça; Flowering white cabbage; Nutrição mineral; Tsoi sum Brassicaceae; Nonheading Chinese cabbage; Flowering white cabbage; Mineral nutrition; Tsoi sum.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/844

Aplicação de enxofre em cobertura e qualidade fisiológica de sementes de feijão - DOI: 10.4025/actasciagron.v30i5.5968
Provedor de dados: 1
Autores: César, Mônica Lúcia; UNESP; Fonseca, Nara Rosseti; UNESP; Toledo, Mariana Zampar; UNESP; Soratto, Rogerio Peres; UNESP; Cavariani, Cláudio; UNESP; Crusciol, Carlos Alexandre Costa; UNESP.
A qualidade fisiológica das sementes pode ser afetada pelo estado nutricional das plantas, destacando-se, dentre os nutrientes, o fornecimento de enxofre, constituinte essencial dos aminoácidos. O trabalho objetivou avaliar os efeitos da adubação sulfatada em cobertura sobre a qualidade fisiológica de sementes de feijão cv. Pérola. O delineamento experimental utilizado foi em blocos casualizados, com quatro repetições. Os tratamentos foram constituídos por cinco doses de enxofre (0, 20, 40, 60 e 80 kg há-1) em cobertura, na forma de sulfato de amônio, 22 dias após a emergência das plântulas. Avaliou-se a qualidade fisiológica das sementes logo após a colheita mediante testes de germinação e vigor. A aplicação de enxofre, em cobertura, aumentou o vigor das...
Palavras-chave: 5.01.03.05-9 Melhoramento Vegetal Phaseolus vulgaris; Germinação; Vigor; Sulfato de amônio; Nutrição mineral Phaseolus vulgaris; Germination; Vigor; Ammonium sulfate; Mineral nutrition.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5968

In vitro organogenesis of Eucalyptus grandis: effects of boron and calcium
Provedor de dados: 1
Autores: Brondani, Gilvano Ebling; Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ/USP); Araujo, Marla Alessandra; Universidade Federal de Lavras; Alcântara, Berenice Kussumoto; Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ/USP); Carvalho, Janice Guedes; Universidade Federal de Lavras; Gonçalves, Antonio Natal; Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ/USP); Almeida, Marcilio de; Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ/USP).
The in vitro organogenesis of woody species plays an essential role in the improvement of forest products by providing saplings with high commercial value. Furthermore, mineral nutrition plays an important role in the induction of organogenic responses. The objective of this study was to evaluate the effects of boron and calcium in the organogenesis of nodal segments from seedlings of Eucalyptus grandis growing under in vitro conditions. The concentration of boron and calcium in MS medium was modified to induce organogenic responses in 45-day-old nodal segments used as explants. After 60 days, the fresh weight, dry weight, ratio of fresh and dry weight, relative water content and relative matter content accumulated by the explants were evaluated. The...
Tipo: Pesquisa com fatores controlados
Palavras-chave: 5.01.03.04-0 bud induction; Callogenesis; Tissue culture; Mineral nutrition 5.01.03.04-0 bud induction; Callogenesis; Tissue culture; Mineral nutrition.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15143

Water relations and photosynthesis of young coffee plants under two water regimes and different N and K doses
Provedor de dados: 115
Autores: Andrade,Marcela A. Frois de; Cairo,Paulo A. Ramos; Santos,Jerffson L.
Nitrogen (N) and potassium (K) are the major nutrients required for coffee plants growth and development. Soil water deficit reduces nutrients uptake, causing negative effects on photosynthesis and water relations of plants. Within certain limits, the increase in N and K concentration in soil solution could result in higher nutrient uptake, softening physiological disturbs caused by the water deficit. This study aimed to evaluate water relations and photosynthesis of young coffee plants grown in 16 L pots in a greenhouse. Treatments were three N and three K doses: conventional (urea 12 g plant-1 and KCl 4 g plant-1), doubled and tripled; and two water regimes: irrigated (soil at field capacity) and non-irrigated. Thus, treatments were arranged in a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica; Water stress; Mineral nutrition.
Ano: 2015
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952015000200004

Effect of integrated application of sulphur and phosphorus on nitrogen fixation and nutrient uptake by Chickpea (Cicer arietinum L.)
Provedor de dados: 115
Autores: Islam,Muhammad; Safdar,Ali.
Nitrogen fixing capability of legumes can be enhanced by the supply of adequate amounts of nutrients, especially phosphorus (P) and sulphur (S). However, combined application of P and S may have synefgistic oí antognistic effects on crop yield, depending upon initial fertility status of soil, level of nutrients applied and test crop used. Field experiments were conducted at two different locations (Barani Agriculture Research Institute, Chakwal, and farmer's field, Talagang) in northern fainfed Punjab, Pakistan, to assess nodulation, nitrogen fixation and nutrient uptake by chickpea (Cicer arietinum L.) in response to application of P (0, 40 and 80 kg ha-1) and of S (0, 15 and 30 kg ha-1) in different combinations. Application of P and S significantly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Legume; Mineral nutrition; Natural abundance technique; Nitrogen derived from air.
Ano: 2009
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952009000800005

Ecological strategies of Al-accumulating and non-accumulating functional groups from the cerrado sensu stricto
Provedor de dados: 42
Autores: Souza,Marcelo C. de; Bueno,Paula C.P.; Morellato,Leonor P.C.; Habermann,Gustavo.
The cerrado's flora comprises aluminum-(Al) accumulating and non-accumulating plants, which coexist on acidic and Al-rich soils with low fertility. Despite their existence, the ecological importance or biological strategies of these functional groups have been little explored. We evaluated the leaf flushing patterns of both groups throughout a year; leaf concentrations of N, P, K, Ca, Mg, S, Al, total flavonoids and polyphenols; as well as the specific leaf area (SLA) on young and mature leaves within and between the groups. In Al-accumulating plants, leaf flushed throughout the year, mainly in May and September; for non-accumulating plants, leaf flushing peaked at the dry-wet seasons transition. However, these behaviors could not be associated with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aluminum; Community; Herbivory; Mineral nutrition; Phenology; Specific leaf area.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200813

Effect of phosphorus on arsenic uptake and metabolism in rice cultivars differing in phosphorus use efficiency and response
Provedor de dados: 42
Autores: FARIAS,JÚLIA G.; BERNARDY,KATIELI; SCHWALBERT,RAÍSSA; DEL FRARI,BIANCA K.; MEHARG,ANDREW; CAREY,MANUS; MARQUES,ANDERSON C.R.; SIGNES-PASTOR,ANTONIO; SAUSEN,DARLENE; SCHORR,MÁRCIO R.W.; TAVARES,MIRIAN S.; NICOLOSO,FERNANDO T.
ABSTRACT A hydroponic experiment was carried out to investigate the effect of phosphorus (P) nutrition on arsenic (As) uptake and translocation within the seedlings of rice cultivars. The experiment occurred in three stages: I 5 days of acclimatization (nutritive solution); II 10 days under P (0.0 and 0.09 mM) and As (0.0 and 100 mM) treatments; III 5 days under recovery. The As exposure had significant effect reducing dry weights of shoots or roots, resulted in elevated concentrations of As in shoot tissues. BR-IRGA 409 showed the highest susceptibility to As in biomass production and root system parameters regardless the P level. This cultivar showed contrasting responses of As translocation to shoot tissue dependent on P levels, with the highest As...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mineral nutrition; Oryza sativa; Phosphate; Arsenic uptake.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100163

The length of the dry season may be associated with leaf scleromorphism in cerrado plants
Provedor de dados: 42
Autores: SOUZA,MARCELO C.; FRANCO,AUGUSTO C.; HARIDASAN,MUNDAYATAN; ROSSATTO,DAVI R.; ARAÚJO,JANAÍNA F. DE; MORELLATO,LEONOR P.C.; HABERMANN,GUSTAVO.
Despite limitations of low fertility and high acidity of the soils, the cerrado flora is the richest amongst savannas. Many cerrado woody species show sclerophyllous leaves, which might be related to the availability of water and nutrients in the soil. To better understand the function and structure of cerrado vegetation within its own variations, we compared two cerrado communities: one in its core region in central Brazil (Brasília, DF) and the other on its southern periphery (Itirapina, SP). We contrasted the length of the dry season, soil fertility rates, leaf concentrations of N, P, K, Ca and Mg and the specific leaf area (SLA) between these communities. The dry season was shorter on the periphery, where the soil was more fertile although more acidic....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Savanna; Mineral nutrition; Rainfall seasonality; Specific leaf area.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000401691

Potential of hydrogen (pH) differentially modulates cadmium stress response in abscisic acid-deficient sitiens tomato mutant
Provedor de dados: 53
Autores: Pompeu,Georgia Bertoni; Ambrosano,Guilherme Bovi; Vilhena,Milca Bartz; Carvalho,Rogério Falleiros; Gratão,Priscila Lupino; Andrino,Felipe; Lira,Simone Possedente de; Azevedo,Ricardo Antunes.
ABSTRACT Uptake of nutrients and cadmium (Cd) are dependent upon many factors, including plant species, ions concentration and pH. Tolerance to Cd-induced oxidative stress can be modulated by phytohormones such as abscisic acid (ABA), which induce the production of reactive oxygen species, activating proteins and enzymes involved in stress response and possibly stress tolerance. The present study aimed to evaluate the biochemical variations induced by Cd in ABA-deficient sitiens tomato mutant (sit) and its wild-type counterpart, Micro-Tom (MT), grown at different pH conditions. The plants were cultivated in nutrient solution (pH 5, 6 and 7; 20-days) and were then further grown over a 48-h period in 0 or 50 ?M CdCl2 at pH 6. Before Cd addition, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant enzymes; Micro-Tom; Mineral nutrition; Oxidative stress; Solanum lycopersicum.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000300317

Nutritional evaluation of Guanandi seedlings fertilized with sewage sludge
Provedor de dados: 53
Autores: Brandani,Carolina Braga; Kühl,Amanda Santos; Ilario,Vicenzo Enrico; Pitombo,Leonardo Machado; Ferreira-Filho,Pedro José; Pereira,Elisabete Alves; Oliveira,Luciana Camargo; Carmo,Janaina Braga do.
ABSTRACT The generation of sewage sludge and the concern with their fate has greatly increased. The objective of this study was to assess the effects of using in natura (SS) or composted sewage sludge (SSC) in comparison with mineral fertilizer (MF) application and a control (CT) treatment on the nutritional status of Guanandi (Calophyllum brasiliense Cambess.) seedlings in a typical Red Oxisol in Brazil. The leaf-level nutritional responses of the Guanandi seedlings to these three different fertilizers and the control were evaluated at 90 and 180 days after planting. Nutritional data of leaf variables were compared between the treatments by means of one-way analysis of variance using the F test and a pair-wise comparison of means done by Tukey’s test. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calophyllum brasiliense; Organic fertilizer; Mineral nutrition; Oxisol; Silviculture; Brazilian tree.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000200253

Microscopic aspects of the colonization of Pyricularia oryzae on the rachis of wheat plants supplied with silicon
Provedor de dados: 53
Autores: Cruz,Maria Fernanda Antunes da; Silva,Larisse Arantes Freitas; Rios,Jonas Alberto; Debona,Daniel; Rodrigues,Fabrício Ávila.
Considering the importance of blast, caused by Pyricularia oryzae, to reduce wheat yield, this study investigate how silicon (Si) could reduce the wheat blast symptoms in the rachis tissues using light microscopy and scanning electron microscopy. Wheat plants (cv. BR 18) were grown in hydroponic culture with either 0 (–Si) or 2 mM (+Si) of Si. Blast symptoms were very well developed on the spikes of the –Si plants, which showed intense discoloration in contrast with the spikes of the +Si plants. At 72 hours after inoculation (hai), fungal hyphae extensively colonized the epidermis and the collenchyma tissue in the radial direction in the rachis of the –Si plants. In the +Si plants, fungal hyphae colonized the epidermis and the collenchyma cells to a lesser...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum L.; Blast; Host defense responses; Mineral nutrition.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000200207

Quality peach produced in fertilizer doses of nitrogen and green pruning
Provedor de dados: 53
Autores: Dolinski,Marcos Antonio; Dangelo,Jessica Welinski de Oliveira; Cuquel,Francine Lorena; Motta,Antonio Carlos Vargas; Mio,Louise Larissa May De.
ABSTRACT The increasing consumer demand for fruit quality justifies the development of researches that combine orchards management and consumers’ perception of the quality of the product. The aim of this study was to evaluate the effect of nitrogen fertilization combined with green pruning intensity on fruit quality of ‘Chimarrita’ from high density peach trees during three consecutive harvest seasons. For this purpose, urea composed of different nitrogen rates (0, 40, 80, 120, 160, 200 and 240 kg.ha-1.year-1) was applied, under two intensities of green pruning (annual – once per season; or continuous – four times per season) in a factorial scheme (7 × 2). Fruits have been subjected to physical, chemical and sensorial analysis, made by 60 non-trained...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prunus persica; Mineral nutrition; Fruit quality; Post-harvest; Organoleptic.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000100134

Effect of root and leaf applications of soluble silicon on blast development in rice
Provedor de dados: 53
Autores: Cacique,Isaias Severino; Domiciano,Gisele Pereira; Moreira,Wiler Ribas; Rodrigues,Fabrício Ávila; Cruz,Maria Fernanda Antunes; Serra,Núria Sierras; Català,Ana Botta.
Blast, caused by Pyricularia oryzae, is the most important fungal disease of rice worldwide. This study aimed to compare root and foliar supply of soluble silicon (Si) on rice resistance to blast. The application of soluble Si to the roots increased Si concentration in leaf tissues as compare to plants grown in soil amended with calcium silicate. There was no increase in leaf Si concentration after soluble Si spray, regardless if the leaves were washed or not before analysis. X-ray microanalysis revealed that Si deposition was very similar on the leaf epidermis of plants sprayed with soluble Si, root amended with soluble Si or grown in soil amended with calcium silicate. The lesion size, the number of lesions per cm² of leaf and the area under blast...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pyricularia oryzae; Foliar disease; Mineral nutrition.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000300013

Mineral nutrition and caffeine content in coffee leaves
Provedor de dados: 53
Autores: MAZZAFERA,PAULO.
The effect of nutrient supply on the caffeine content of coffee (Coffea arabica L.) leaves was investigated. Seeds were germinated in nutrient-agar media lacking N, P, K, Ca, Mg, S, Zn, B or Mo. The control treatment contained all essential nutrients. The caffeine concentration was determined seven months after seed sowing when the seedlings have 3 to 4 pair of leaves. The omission of K induced the highest caffeine content in the leaves (24.5 g.kg-1). Caffeine in the control treatment was 21.9 g.kg -1. Absence of P induced the lowest content, 17.5 g.kg-1.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Caffeine; Coffea arabica L.; Mineral nutrition.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051999000200018

Effects of surface application of dolomitic limestone and calcium-magnesium silicate on soybean and maize in rotation with green manure in a tropical region
Provedor de dados: 53
Autores: Castro,Gustavo Spadotti Amaral; Crusciol,Carlos Alexandre Costa.
Although lime is currently the material most frequently used to ameliorate soil acidity in Brazil, silicate could efficiently replace this source because of its greater solubility and its greater silicon content, which are beneficial for plant development. This study aimed to evaluate the effects of superficial lime and silicate application on soil chemical attributes as well as on soybean and maize nutrition and grain yields when these crops are grown in rotation with green manure. The experimental design was a complete randomized block with sixteen replicates. Plots were treated with one of two materials for acidity correction (dolomitic lime and calcium/magnesium silicate) or with no soil correction, as a control. Silicate corrected soil acidity and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil acidity correction; Crop yield; Silicon; Mineral nutrition; No tillage.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000300311

Silicon and manganese on rice resistance to blast
Provedor de dados: 53
Autores: Cacique,Isaías Severino; Domiciano,Gisele Pereira; Rodrigues,Fabrício Ávila; Vale,Francisco Xavier Ribeiro do.
Blast, caused by the fungus Pyricularia oryzae, is the most important fungal disease of rice. The effect of silicon (Si) and manganese (Mn), and their interaction, on rice resistance to blast was investigated. Rice plants (cultivar "Metica 1") were grown in hydroponic solution with 0 or 2 mmol L-1 of Si and with 0.5, 2.5, and 10 mmol L-1 of Mn. Sixty-day-old plants were inoculated with a conidial suspension of P. oryzae and the incubation period (IP), the number of lesions (NL) per cm² of leaf area, the lesion size (LS), and blast severity were evaluated. Blast severity was scored at 48, 72, 96, and 144 hours after inoculation and data were used to obtain the area under blast progress curve (AUBPC). Silicon concentration was significantly higher in leaf...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa; Pyricularia oryzae; Leaf spot; Mineral nutrition.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052012000200013

Influence of different levels of aluminum on the development of citrus rootstock swingle citrumelo (Citrus paradisi mcf. x Poncirus trifoliata raf.) in nutrient solution
Provedor de dados: 52
Autores: Santos,Carlos Henrique dos; Grassi Filho,Hélio; Rodrigues,João Domingos; Pinho,Sheila Zambello de.
This work aimed at evaluating the influence of different levels of aluminum on the physiological parameters of the citrus rootstock Swingle Citrumelo in hydroponic solution. The experiment was carried out with a completely randomized design with three replications, subdivided in several lots. The levels of aluminum used were: 0, 7.5, 15, 22.5 and 30 mg L-1 in form of AlCl3.6H2O in nutrient solution. Following physiological parameters were evaluated: specific and relative foliar area, relative foliar mass, and the ratio of aerial part dry matter/root system dry matter. The results showed that aluminum did not influence the parameters evaluated except the specific foliar area, which decreased starting at the 7.5 mg L-1 level.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus; Rootstocks; Aluminum; Mineral nutrition; Growth analysis.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000100004

Strategies to increase zinc deficiency tolerance and homeostasis in plants
Provedor de dados: 61
Autores: Henriques,Ariadne Ribeiro; Chalfun-Junior,Antonio; Aarts,Mark.
Zinc deficiency is a global problem of considerable importance for agriculture and human health. Under zinc deficiency conditions, many essential zinc-dependent physiological functions are unable to operate normally, and the cellular homeostasis is adversely affected. This paper described the potential damages that low-zinc bioavailability in soil can have for plants, humans, and animals. In addition, current knowledge on physiological and molecular aspects of zinc homeostasis in plants and strategies used to increase zinc deficiency tolerance were discussed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofortification; Mineral nutrition; Plant abiotic stress; Plant nutrition.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202012000100002

Ecophysiology of the cacao tree
Provedor de dados: 61
Autores: Almeida,Alex-Alan F. de; Valle,Raúl R.
Cacao, one of the world's most important perennial crops, is almost exclusively explored for chocolate manufacturing. Most cacao varieties belong to three groups: Criollo, Forastero and Trinitario that vary according to morphology, genetic and geographical origins. It is cropped under the shade of forest trees or as a monocrop without shade. Seedlings initially show an orthotropic growth with leaf emission relatively independent of climate. The maturity phase begins with the emission of plagiotropic branches that form the tree crown. At this stage environmental factors exert a large influence on plant development. Growth and development of cacao are highly dependent on temperature, which mainly affects vegetative growth, flowering and fruit development....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Root growth; Flowering; Pod set; Flushing; Mineral nutrition.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202007000400011

Nutritional adaptations of native plants of the cerrado biome in acid soils
Provedor de dados: 61
Autores: Haridasan,Mundayatan.
Soils of the cerrado biome, mostly oxisols and deep sandy entisols, are acid, dystrophic and poor in available nutrients. These soils are not very different from soils that occur in the Amazon region. However, the open savanna physiognomies of cerrado with lower biomass of their different components are deficient in nutrients at the ecosystem level, unlike the Amazon forests which retain high nutrient reserves in their live biomass. Field crops are susceptible to aluminum and manganese toxicities, besides nutrient deficiencies, in cerrado soils and do not grow well in the absence of liming and fertilization. However, concepts of nutrient deficiencies and toxicities, well established for cultivated plants, should not be extended to native species in natural...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aluminum toxicity; Latosol; Mineral nutrition; Soil fertility.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202008000300003

Supplemental Ca2+ does not improve growth but it affects nutrient uptake in NaCl-stressed cowpea plants
Provedor de dados: 61
Autores: Guimarães,Francisco Valderez Augusto; Lacerda,Claudivan Feitosa de; Marques,Elton Camelo; Abreu,Carlos Eduardo Braga de; Aquino,Boanerges Freire de; Prisco,José Tarquinio; Gomes-Filho,Enéas.
The growth and nutrient assimilation was evaluated in CaCl2- and CaSO4-supplemented cowpea plants subjected to salt stress (75 mM NaCl). The salinity significantly reduced the cowpea vegetative growth. The addition of CaCl2 in the growth medium did not significantly affect plant growth, while for the CaSO4, the beneficial effects of Ca2+ were moderate. Salinity increased the Na+, K+, Cl-, N and P content in the plants, however it decreased the content of Ca2+ and Mg2+. Increases in Ca2+ concentration in the nutrient solution caused decreases in the Na+ and Mg2+ contents and increases in Ca2+, K+, P, and Cl- contents. The supplemental Ca2+ may alleviate the Na+ toxicity and may improve nutritional and ionic balance in cowpea, but it cannot overcome the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calcium; Mineral nutrition; Salinity; Vigna unguiculata.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202012000100003

Influence of Rootstocks on Nitrogen, Phosphorus and Potassium Content in Petioles of Four Table Grape Varieties
Provedor de dados: 117
Autores: Ibacache G,Antonio; Sierra B,Carlos.
Four field trials were conducted at Vicuña Experimental Center (30°02' S, 70°44' W) located in the Coquimbo Region, Chile, over four seasons, 2002-2003 to 2005-2006, to determine the influence of 10 rootstocks (Freedom, Harmony, Saint George, Salt Creek, SO4, 1613C, 1103P, 99R, 110R, 140Ru, as well as own roots vines) on nutrient content in petioles of vars. Flame Seedless, Thompson Seedless, Superior Seedless and Red Globe grapevines (Vitis vinifera L.). The trials took place at a site that had previously planted to vineyard. The experimental design was randomized complete block with four replicates. Petioles opposite to clusters were taken at bloom as samples and analyzed for total N, P and K content. Significant differences in nutrient levels due to...
Tipo: Journal article
Palavras-chave: Grapevine; Mineral nutrition; Rootstocks; Petiole analysis; Chile.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000400004

Effects of early fertilization on the performance of Nothofagus dombeyi planted in the Coastal Range of south-central Chile
Provedor de dados: 118
Autores: Donoso,Pablo J; Soto,Daniel P; Schlatter,Juan E; Büchner,Carlos A.
Native Nothofagus dombeyi growth rates excel in secondary forests and in some plantations, and the species has good timber quality. However, few have reported on the effects of fertilization on N. dombeyi plantations. This is a key matter since fertilization has environmental and financial costs, and therefore its use to increase growth and survival for production or restoration must be carefully evaluated. Here we evaluated the early effects of fertilization (control and three levels) using several performance variables (leaf properties, growth, plant quality, and survival) in a N. dombeyi plantation at a low elevation in the Coastal Range of south-central Chile, which has a rainy temperate climate and medium fertility soils. Four years after plantation...
Tipo: Journal article
Palavras-chave: Fast-growing tree species; Hardwood plantations; Mineral nutrition; Plant quality; Survival.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000300014

Soil patterns and foliar standards for two cocoa clones in the States of Espírito Santo and Bahia, Brazil
Provedor de dados: 65
Autores: Oliveira,Marcos Góes de; Partelli,Fábio Luiz; Cavalcanti,André Cayô; Gontijo,Ivoney; Vieira,Henrique Duarte.
ABSTRACT:  The objective of this research was to establish soil patterns and foliar standards for clonal crops of cocoa CCN51 and PS1319 in the Atlantic regions within the northern Espírito Santo and southern Bahia States. Samples were collected from September to October 2015, in 45 high productive plots, being 23 plots of clone CCN51 and 22 of clone PS1319. Sufficiency ranges for soil and foliar standards were recommended for cocoa clones CCN51 and PS1319 planted in the Northern Espírito Santo and Southern Bahia states. Differences in the contents of foliar macronutrients K, Ca, Mg, S and micronutrients Fe and Mn, were verified between clones CCN51 and PS1319. Differences reported for standards from different geographical regions confirmed that these...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Theobroma cacao L.; Mineral nutrition; Sufficiency range; DRIS.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019001000251

DRIS standard and normal ranges of foliar nutrients for the culture of ‘Thompson’ atemoya
Provedor de dados: 65
Autores: Santos,Eduardo Maciel Haitzmann dos; Rozane,Danilo Eduardo.
ABSTRACT: Atemoya, an interspecific hybrid belonging to Annonaceae family, is the outcome of a cross between cherimoya (Annona cherimola Mill.) and Custard apple (Annona squamosa L.). In light of the current shortage of scientific data on the nutritional management techniques for this fruit, the need to develop and apply a specific methodology becomes crucial. From the variety of plant diagnostic tools available, the DRIS method was selected, for use in the commercial cultivation of the ‘Thompson’ cultivar of atemoya located in the São Paulo State, municipalities of Itapetininga, Piedade, Pilar do Sul and Salto de Pirapora. Normal nutrient ranges were determined to interpret the levels of N, P, K, Ca, Mg, S, B, Cu, Fe, Mn and Zn in the culture through...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Annonaceae; Mineral nutrition; Foliar diagnosis; Nutritional balance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400656

Arbuscular mycorrhizal fungus on the initial growth and nutrition of Coffea arabica L. genotypes
Provedor de dados: 64
Autores: Fonseca,Arley José; Freitas,Ana Flávia de; Carvalho,Gladyston Rodrigues; Carneiro,Marco Aurélio Carbone; Vilela,Diego Júnior Martins; Fassio,Larissa de Oliveira.
ABSTRACT The benefits of mycorrhization occur with the growth of hyphae in colonized roots by promoting an increase of the contact surface which improves the initial growth due to a better absorption of water and nutrients. The objective was to evaluate the effect of arbuscular mycorrhizal fungus Rhizophagus clarus inoculation over the initial development and nutritional response of six genotypes of Coffea arabica L. Six genotypes of Coffea arabica L. were used (MGS Aranas, H29-1-8-5, Red Catuai IAC 144, IPR 100, Catigua MG2, Paraíso H 419-1) and with arbuscular mycorrhizal fungus - AMF: Rhizophagus clarus and without the application of the fungus. For the production of coffee seedlings, seeds were placed to germinate in plastic trays with sterile sand....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffee; Mineral nutrition; Progeny; Fungal inoculation; Symbiosis.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542019000100223

Sunflower micronutrient uptake curves
Provedor de dados: 64
Autores: Zobiole,Luiz Henrique Saes; Castro,César de; Oliveira,Fábio Alvares de; Oliveira Júnior,Adilson de; Moreira,Adônis.
Most studies in the literature regarding the uptake of micronutrients [zinc (Zn), manganese (Mn), iron (Fe), copper (Cu) and boron (B) accumulation] by sunflower are old. For this reason, this work is aimed to establish curves of sunflower micronutrient accumulation in tropical edaphoclimatic conditions. The experiment was conducted in field on Rhodic Eutrudox, located at the experimental farm of Embrapa Soja in Londrina-PR, using the commercial hybrid BRS 191. The experimental design was completely randomized, with four replicates. The experimental units consisted of 14 lines with a spacing of 0.70 meter between lines and 25.0 meters in length, with final density of 42,858 plants per hectare. Plants samples were collected every 14 days after emergence....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helianthus annuus; Nutrient uptake rate; Micronutrients; Mineral nutrition.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000200016

Nutrient and inorganic solute (Na+ and Cl-) content in green onion plants under hydroponic cultivation using brackish water
Provedor de dados: 64
Autores: Souza,Carlos Donato da Silva; Silva,Geronimo Ferreira da; Menezes,Sirleide Maria de; Morais,José Edson Florentino de; Santos Júnior,José Amilton; Silva,Alexsandro Oliveira da.
ABSTRACT Cultivation using brackish waters can result in nutritional and metabolic imbalances in several plant species, consequently reducing the production of dry matter (DM) and accumulation of toxic ions (Na+ and/or Cl-) in plants. We evaluated the DM production, and nutrient and inorganic solute (Na+ and Cl-) content in green onion plants (cv. Todo Ano Evergreen - Nebuka) under different levels of nutrient solution salinity in combination with circulation frequencies of this solution. Two experiments were conducted in a hydroponic system, using a completely randomized design, in a 6 × 2 factorial scheme, with five replicates: six levels of nutrient solution salinity (1.5, 3.0, 4.5, 6.0, 7.5, and 9.0 dS m-1) and two solution circulation frequencies...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allium fistulosum L.; Nutrient solution; Salinity; Mineral nutrition.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100227

Drought-induced alterations in the uptake of nitrogen, phosphorus and potassium, and the relation with drought tolerance in sugar cane
Provedor de dados: 64
Autores: Silva,Thais Ramos da; Cazetta,Jairo Osvaldo; Carlin,Samira Domingues; Telles,Bruna Robiati.
ABSTRACT Although there are evidences that the proper supply of mineral nutrients to plants relieves water stress, little is known on the approach of how the drought affects the absorption and accumulation of nutrients by distinct sugar cane genotypes, or in different parts of a same plant. Thus, the objective of this study was to determine the content and accumulation of N, P and K in the aerial part of plant from three genotypes of sugar cane, submitted to three water potentials in the soil, and check the relationship of these variables with the tolerance of plants to prolonged drought. In order to access this objective, an experiment under greenhouse conditions, comprised by a fatorial 3 × 3, in a randomized block design, and four replicates was carried...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum officinarum L.; Water limitations; Mineral nutrition; Soil water potentials; Plant growth.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200117

Roles of arbuscular mycorrhizal fungi on acclimatization of clones of Coffea arabica L. produced by somatic embryogenesis
Provedor de dados: 64
Autores: Fonseca,Arley José; Tassone,Guilherme Augusto Teixeira; Carneiro,Marco Aurélio Carbone; Carvalho,Gladyston Rodrigues; Carvalho,Carlos Henrique Siqueira; Botelho,Cesar Elias.
ABSTRACT The production of Coffea arabica L. clone seedlings through the somatic embryogenesis technique is one of the alternatives of greatest demand for coffee producers. However, clones can face difficulties related to acclimatization carried out under greenhouse conditions, which can increase the production costs. A tested alternative with promising results is inoculation with arbuscular mycorrhizal fungi (AMF) during the seedling acclimatization process. Thus, this study aimed to promote the improvement of the seedling production process through somatic embryogenesis associated with inoculation with AMF. For the production of the clones, seedlings were used in the phase when they presented four pairs of leaves (Clone 1 “Fruiting red Catucaí” and Clone...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Propagation; Rooting; Clones; Mycorrhizae; Mineral nutrition.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100222

Alternative potassium source for the cultivation of ornamental sunflower
Provedor de dados: 64
Autores: Torqueti,Sabrina Thereza dos Santos; Boldrin,Karina Volpi Furtini; Nascimento,Ângela Maria Pereira do; Paiva,Patrícia Duarte de Oliveira; Furtini Neto,Antônio Eduardo; Luz,Iracema Clara Alves.
ABSTRACT Brazil is dependent on importation of fertilizers, especially the potassics. Rocks and minerals that contain nutrients have a potential for use in agriculture as fertilizer, especially those of slow solubilization and that exhibit residual effect. In this context, the objective was to assess the feasibility of glauconite rock as potassium source for the cultivation of ornamental sunflower. The experiment was conducted under controlled conditions arranged in an entirely randomized design, in a 4x4 + 4 factorial scheme, with four replicates and one plant per plot. Four glauconite-based fertilizers were used as a potassium source: fine grained glauconite, fine grained organo-mineral glauconite, coarse grained glauconite and coarse grained...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helianthus annuus; Glauconite; Mineral nutrition; Ornamental plant; Postharvest.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000300257

Effects of cytokinins on in vitro mineral accumulation and bud development in Annona glabra L.
Provedor de dados: 64
Autores: Oliveira,Lenaldo Muniz de; Paiva,Renato; Santana,José Raniere Ferreira de; Pereira,Flávia Dionísio; Nogueira,Raírys Cravo; Silva,Luciano Coutinho.
Annona glabra is a tropical species that has significant agronomic potential in terms of furnishing fruits for in natura consumption and for the production of phyto-pharmaceuticals. In vitro cultivation has been considered the most promising form of propagation for this species, although large scale utilization of this technique is currently limited by high rates of leaf abscission, reduced rates of explant multiplication and slow bud growth. The present work evaluated the effects of different cytokinins on mineral accumulation in shoots of A. glabra cultivated in vitro, and their effects on growth and survival of these plants. Buds of A. glabra were cultivated in Wood Plant Medium (WPM) in the presence of 6-benzilaminopurine (BAP), thidiazuron (TDZ),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth regulators; Annonaceae; Mineral nutrition.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542010000600012