Produtividade e qualidade dos grãos de feijão em função da aplicação de nitrogênio em cobertura e via foliar

Soratto, Rogério Peres; Fernandes, Adalton Mazetti; Souza, Edicarlos Damacena de; Souza-Schlick, Genivaldo David de

doi:10.1590/s0100-06832011000600018

Cited by 13 publications

(9 citation statements)

References 17 publications

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“…Regardless of cultivar and experiment, N application linearly increased RSGY and SY values (Table 1). These results corroborate those obtained by Soratto et al (2011), who verified that N fertilization provided higher quality grains for cv. IAC Alvorada, indicated by the higher values of RSGY, in the absence of foliar N application or when it was only performed in the R5 stage.…”

Section: Methodssupporting

confidence: 92%

Grain yield and quality of common bean cultivars in response to nitrogen

Aires¹,

Soratto²,

Guidorizzi³

2019

Científica

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Nitrogen (N) is the nutrient most required by common bean, and the response to N fertilization may be variable among genotypes. The objective of this work was to evaluate the N nutrition, grain yield, grain size, and crude protein concentration of common bean cultivars in response to topdressing N rates. Two experiments were conducted on a Typic Rodudalf, under two growth conditions ("dry" and "rainy" seasons). A randomized complete block design with a 7 × 4 factorial arrangement and four replicates was used. The treatments consisted of seven cultivars (Pérola, BRS Ametista, BRS Notável, IPR Campos Gerais, IPR Tangará, IAC Formoso, and IAC Imperador) and four N rates (0, 35, 70, and 140 kg ha-1). The experiments were analyzed jointly. The application of N did not affect the cycle, plant population, and number of grains per pod, but increased the leaf N concentration, number of pods per plant, grain size, and grain yield, regardless of the cultivar. The responses of common bean cultivars to N rates varied according to the growth condition, with response to N only in the "rainy" season experiment, under conditions of lower N and higher C/N ratio in the straw of the preceding crop. The crude protein concentration in the grains was influenced in an inconsistent manner by the factors studied.

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Section: Methodssupporting

confidence: 92%

Grain yield and quality of common bean cultivars in response to nitrogen

Aires¹,

Soratto²,

Guidorizzi³

2019

Científica

Self Cite

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“…Com o início do enchimento de vagens no feijoeiro, os nódulos passam por uma série de alterações estruturais e fisiológicas, que resultam na sua senescência e perda da capacidade de fixar N 2 durante um estádio de alta demanda metabólica para a formação dos grãos (Fernández-Luqueño et al, 2008), que assim não será suprida por meio da simbiose. Nessas situações, e quando o suprimento de N no solo não é suficiente, a demanda de N do cultivo pode ser satisfeita com o fertilizante nitrogenado aplicado em cobertura (Franco et al, 1979;Soratto et al, 2011). Deve-se também considerar que a resposta do feijoeiro comum à adubação de cobertura pode variar conforme o genótipo avaliado (Furtini et al, 2006) e o sistema de cultivo (Farinelli et al, 2006).…”

Section: Discussionunclassified

Resposta do Feijoeiro Comum à Inoculação com Rizóbio e Suplementação com Nitrogênio Mineral em Dois Biomas Brasileiros

Brito

Pacheco

Filho

et al. 2015

Rev. Bras. Ciênc. Solo

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O feijoeiro comum (Phaseolus vulgaris L.) pode se beneficiar da fixação biológica de N2, mas respostas inconsistentes da cultura à inoculação com rizóbio indicam a necessidade de aplicação de N mineral complementar. Este trabalho teve por objetivo avaliar a resposta do feijoeiro à inoculação com rizóbio, associada à suplementação com N mineral, nos biomas Cerrado e Mata Atlântica. Foram conduzidos quatro experimentos de campo, dois em Santo Antônio de Goiás, GO, um em Valença, RJ e um em Macaé, RJ, onde a inoculação com estirpes comerciais de rizóbio foi comparada à inoculação com a estirpe BR 923 de Sinorhizobium sp., à adubação com N mineral e à suplementação com N na semeadura e em cobertura. A avaliação da população nativa de rizóbio indicou 105 células g-1 no solo na área experimental em Goiás, anteriormente cultivada com feijão, e 102células g-1 em Valença, anteriormente mantida com pastagem. Nos dois experimentos em Goiás, o rendimento de grãos, da ordem de 2.100 kg ha-1, não diferiu entre os tratamentos testemunha absoluta, inoculação com rizóbio ou aplicação de 120 kg ha-1 de N. Em Valença, a inoculação com estirpes comerciais forneceu rendimentos da cultivar Ouro Negro superiores à testemunha absoluta, na ausência de adubação de cobertura; na presença de 40 kg ha-1 de N em cobertura, a inoculação com rizóbio proporcionou rendimento de 3.420 kg ha-1, superior aos demais tratamentos. Na média das diferentes fontes de N na semeadura, a adubação de cobertura aumentou a produção de grãos de 2.367 para 2.542 kg ha-1. Em Macaé, em solo com alto teor de matéria orgânica, os maiores rendimentos foram obtidos com inoculação das estirpes comerciais associada a 40 kg ha-1 de N em cobertura, com efeito deletério da adubação de 80 kg ha-1 de N no plantio. Concluiu-se que em áreas sem cultivo prévio de feijão, a inoculação com estirpes comerciais de rizóbio aumentou o rendimento de grãos, em particular quando associada à adubação de cobertura com N.

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“…It is also a reference cultivar for grain yield and quality (Melo et al, 2006), and preferred by packing companies and the final consumer, defining market standards. The cultivar IAC Alvorada, released in 2007, also has a high yield potential and an excellent quality of carioca grains, as well as moderate tolerance to anthracnose (Carbonell et al, 2008;Soratto et al, 2011). However, there are no studies in the literature on the nutrient absorption and exportation of these cultivars, especially under different fertilization levels.…”

Section: Introductionmentioning

confidence: 99%

Nutrient extraction and exportation by common bean cultivars under different fertilization levels: I - macronutrients

Soratto

Fernandes²,

Santos³

et al. 2013

Rev. Bras. Ciênc. Solo

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SUMMARYThe 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 factorial model, represented by two cultivars and three NPK levels (PD0 -'Pérola' without fertilization, PD1 -'Pérola' with 50 % of recommended fertilization, PD2 -'Pérola' with 100 % of recommended fertilization, AD0 -'IAC Alvorada' without fertilization, AD1 -'IAC Alvorada' with 50 % of recommended fertilization, and AD2 -'IAC Alvorada' with 100 % of recommended fertilization) and subplots sampled seven times during the cycle. At higher levels of NPK fertilization, the grain yield and macronutrient extraction and exportation of both cultivars were higher, but without statistical differences. Macronutrient absorption was higher in the treatments with 100 % of recommended NPK fertilization (average amounts per hectare: 140 kg N, 16.5 kg P, 120 kg K, 69 kg Ca, 17.9 kg Mg, and 16.3 kg S). Regardless of the treatment, the demand for N, P, K, Ca, and Mg was highest from 45 to 55 days after emergence (DAE), i.e., in the R 7 stage (pod formation), while the highest S absorption rates were concentrated between 55 and 65 DAE. More than 70 % of P, between 58 and 69 % of N, 40 and 52 %

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Produtividade e qualidade dos grãos de feijão em função da aplicação de nitrogênio em cobertura e via foliar

Cited by 13 publications

References 17 publications

Grain yield and quality of common bean cultivars in response to nitrogen

Grain yield and quality of common bean cultivars in response to nitrogen

Resposta do Feijoeiro Comum à Inoculação com Rizóbio e Suplementação com Nitrogênio Mineral em Dois Biomas Brasileiros

Nutrient extraction and exportation by common bean cultivars under different fertilization levels: I - macronutrients

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