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| Registros recuperados: 137 | |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 & 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 β-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,... |
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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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| Registros recuperados: 137 | |
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