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Registros recuperados: 137
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Absorção de macronutrientes por porta-enxertos e cultivares de videira em hidroponia Scientia Agricola
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
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Acclimatization of Tapeinochilos ananassae plantlets in association with arbuscular mycorrhizal fungi PAB
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
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Accumulation and exportation of nutrients by yellow Passion fruit cv. IAC 275 Rev. Bras. Frutic.
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
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Accumulation of dry mass and macronutrients by sourgrass plants Planta Daninha
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
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Agronomic performance of beet cultivars as a function of phosphorus fertilization AGRIAMBI
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
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Alternative potassium source for the cultivation of ornamental sunflower Ciência e Agrotecnologia
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
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Análise de plantas: amostragem e interpretação. Infoteca-e
SILVA, D. J..
Amostragem; Interpretação dos resultados da análise foliar.
Tipo: Folhetos Palavras-chave: Nutrição mineral; Plant; Mineral nutrition; Solo; Planta; Adubação; Amostragem; Análise Foliar; Soil; Leaves; Tissue analysis.
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134156
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Anatomical alterations in taro corms with "metsubure" symptoms Horticultura Brasileira
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
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Aplicação de enxofre em cobertura e qualidade fisiológica de sementes de feijão - DOI: 10.4025/actasciagron.v30i5.5968 Agronomy
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
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Arabica coffee response to rates of coated and conventional urea in sandy soil PAB
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
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Arbuscular mycorrhizal fungus on the initial growth and nutrition of Coffea arabica L. genotypes Ciência e Agrotecnologia
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
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Assessment on nutrient levels in the aerial biomass of irrigated guava in São Francisco Valley, Brazil Rev. Bras. Frutic.
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
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Beaufils ranges to assess the cotton nutrient status in the southern region of Mato Grosso Rev. Bras. Ciênc. Solo
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
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Calcium, potassium and magnesium treatment of Chrysanthemum morifolium cv. "Bi Time" and callogenesis in vitro Scientia Agricola
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
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Calibration of cardy-ion meters to measure nutrient concentrations in soil solution an in plant sap Scientia Agricola
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
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Changes in mineral nutrition during fruit growth and development of ‘Seike’ and ‘Newhall’ navel orange as a guide for fertilization Rev. Bras. Frutic.
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
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Characterization of nutrient deficiency in Hancornia speciosa Gomes seedlings by omitting micronutrients from the nutrient solution Rev. Bras. Frutic.
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
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Characterization of the effects of macronutrient deficiencies in mangabeira seedlings Rev. Bras. Frutic.
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
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Chlorine requirement for Japanese laying quails R. Bras. Zootec.
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
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Combinações de doses de molibdênio e nitrogênio na adubação da cultura do feijoeiro-comum - DOI: 10.4025/actasciagron.v31i2.7033 Agronomy
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
Registros recuperados: 137
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