Semeadura em fileira dupla e espaçamento reduzido na cultura da soja.

Procópio, S. de O.; Balbinot, Alvadi Antônio; Debiasi, Henrique; Franchini, J. C.; Panison, Fernando

doi:10.18227/1982-8470ragro.v8i2.1469

Cited by 30 publications

(51 citation statements)

References 15 publications

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“…This causes physiological changes in the plant, leading to premature leaf fall and yield reduction (EMBRAPA, 2013) and may have limited the magnitude of crop response to spatial arrangements. Procópio et al (2014), working with the cultivar BRS 294 RR, concluded that seeding in twin rows promotes grain yield similar to that of the traditional arrangement used in the crop. On the other hand, Vitorino (2013) worked with twin-and single-row arrangements and observed a significant yield increase of 7.6% using twin rows.…”

Section: Resultsmentioning

confidence: 98%

“…Regarding the effect of row spacing, there are conflicting results in the literature, showing that the response is dependent on cultivar and growing environment (Rambo et al, 2003;Heiffig et al, 2006;Procópio et al, 2014). Janovicek et al (2005) reported that twin-row arrangements in direct planting systems often increased yields over those obtained with single 76-cm rows, with yields that were similar to those obtained with sowing in 38-or 19-cm rows.…”

Section: Resultsmentioning

confidence: 99%

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Spatial arrangements and fertilizer doses on soybean yield and its components

Duarte

Cruz

Soares

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe aim with this study was to evaluate the effects of single-and twin-row spatial arrangements associated with different doses of fertilization on soybean yield and its components. The experiment was carried out at Federal University of Goiás, Campus of Jataí, in a split-plot randomized block design with 10 treatments and four replicates. Each plot corresponded to a dose of P and K fertilization (0, 50, 100, 200 and 400% of the recommended dose) and the subplots to two types of spatial arrangements: single and twin rows. The yield components evaluated were plant final population, number of pods and seeds per plant, number of seeds per pod, weight of a thousand grains and yield. The increase in fertilization dose, even at doses two and four times higher than recommendation, results in increased soybean grain yield for both studied arrangements. The single-row arrangement provides greater soybean yield, regardless of the dose of fertilization, although most of the production components were not negatively affected, except the population.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Spatial arrangements and fertilizer doses on soybean yield and its components

Duarte

Cruz

Soares

et al. 2016

Rev. bras. eng. agríc. ambient.

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“…O número de grãos por vagem e a massa de mil grãos não foram alterados pelas intensidades de pastejo, indicando que são componentes de rendimento pouco afetados pelo ambiente. Adicionalmente, o índice de colheita aparente não foi influenciado pelas intensidades de pastejo, obtendo-se valores próximos de 0,50, similar aos alcançados em outros trabalhos (PROCÓPIO et al 2014;BALBINOT JUNIOR et al 2015). Em função da reduzida variação nos componentes de rendimento, a produtividade da soja foi similar entre as intensidades de pastejo.…”

Section: Resultsunclassified

Altura de manejo da pastagem, época de dessecação de Urochloa ruziziensis e adubação nitrogenada na cultura da soja em sistema integração lavoura-pecuária

Balbinot¹,

Franchini²,

Debiasi³

2016

Rev. Ciên. Agrovet.

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Altura de manejo da pastagem, época de dessecação de Urochloa ruziziensis e adubação nitrogenada na cultura da soja em sistema integração lavoura-pecuária PALAVRAS-CHAVE:crescimento da soja, acúmulo de N, componentes de rendimento, Glycine max. ABSTRACTThe integration of soybean crop with pastures is an important strategy to diversify the grain production systems in Brazil. The objective of this research was to evaluate the effect of grazing intensities in Urochloa ruziziensis, desiccation time of the pasture in relation to soybean sowing and crop fertilization with mineral nitrogen on the growth and yield of soybean, cultivar NK 7059 RR. Three grazing intensities of U. ruziziensis (15, 35 and 50 cm of plant height), were grazed continuously for six months, plus a no grazing paddock, making four experiments, were evaluated. In each experiment a randomized complete block design with three replications in a split plot design was used.In the plots were allocated four desiccation time of the pasture (35, 28, 20 and 8 days before soybean sowing) and in the subplots, nitrogen fertilization in soybean (without N or with 30 kg N ha -1 at sowing). Initially, analysis of each experiment was performed and subsequently a joint analysis was performed. The grazing intensities did not significantly affect the soybean growth and the yield. The increased interval between pasture desiccation and soybean seeding and the nitrogen fertilization on crop promoted increments in the growth and N accumulation by soybean in early development cycle. On the other hand, in the reproductive phase, these differences were negligible and did not affected the yield.

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“…Management practices, such as sowing period, choice of the cultivar and the spatial arrangement of the plants may alter growth and grain yield (Mauad et al, 2010;Procópio et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Soybean growth affected by seeding rate and mineral nitrogen

Werner

Balbinot

Ferreira

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThis study aimed to evaluate the effect of seeding rates and nitrogen (N) fertilization on plant growth in soybean cultivar with indeterminate growth habit. Two experiments were conducted in the 2013/14 and 2014/15 growing seasons, in a complete block design with split-plot scheme and six replicates. Four seeding rates (150, 300, 440 and 560 000 viable seeds ha -1 ) and two N doses (0 and 45 kg ha -1 ) were allocated in the plots and subplots, respectively. The cultivar NK7059 RR was used. The following traits were assessed: leaf, stem and total shoot dry matter, leaf/stem dry matter ratio, stem and leaf N content, SPAD index, plant height, first pod height, number of branches per plant and grain yield. Soybean growth is not affected by the interaction of plant density and mineral N fertilization. Higher seeding rates increase plant dry matter in the initial development stages and reduce leaf/ stem ratio and the number of branches per plant. The effects of N fertilization on soybean growth vary between growing seasons, but do not affect grain yield, even considering a wide range of seeding rates.Crescimento de plantas de soja influenciado pela densidade de semeadura e nitrogênio mineral R E S U M O Neste trabalho o objetivo foi avaliar o efeito de densidades de semeadura e adubação nitrogenada sobre o crescimento de plantas de soja em cultivar com tipo de crescimento indeterminado. Dois experimentos foram conduzidos nas safras 2013/14 e 2014/15 com delineamento de blocos casualizados em parcelas subdivididas e seis repetições. Nas parcelas foram alocadas quatro densidades de semeadura (150, 300, 440 e 560 mil sementes viáveis ha -1 ) e nas subparcelas dois níveis de nitrogênio (0 e 45 kg N ha -1 ). A cultivar de soja utilizada foi a NK7059 RR. Foram avaliados a massa seca de caules, folhas e total, relação folha/caule, o teor de nitrogênio nas folhas e no caule, índice SPAD, altura de plantas e da inserção da primeira vagem, número de ramos por planta e produtividade de grãos. O crescimento de plantas de soja não é afetado pela interação da densidade de semeadura e a adubação nitrogenada mineral. O aumento da densidade de semeadura incrementa a massa seca de plantas nas fases iniciais de desenvolvimento e reduz a relação folha/caule e o número de ramos por planta. O efeito da adubação nitrogenada no crescimento das plantas é variável entre as safras mas não aumenta a produtividade mesmo considerando ampla variação de densidade de semeadura.

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Semeadura em fileira dupla e espaçamento reduzido na cultura da soja.

Cited by 30 publications

References 15 publications

Spatial arrangements and fertilizer doses on soybean yield and its components

Spatial arrangements and fertilizer doses on soybean yield and its components

Altura de manejo da pastagem, época de dessecação de Urochloa ruziziensis e adubação nitrogenada na cultura da soja em sistema integração lavoura-pecuária

Soybean growth affected by seeding rate and mineral nitrogen

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