Analysis of phenotypic plasticity in indeterminate soybean cultivars under different row spacing

Balbinot, Alvadi Antônio; Oliveira, M. C. N. de; Zucareli, Claudemir; Ferreira, A. S.; Werner, Flávia; Silva, M. A. de A. e

doi:10.21475/ajcs.18.12.04.pne1003

Cited by 8 publications

(5 citation statements)

References 19 publications

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“…Several studies have pointed out the possibility of reducing the soybean sowing density without reducing yield, increasing the economic return (Lee et al, 2008;Büchling et al, 2017). It is possible due to the high phenotypic plasticity of soybean plants (Cox & Cherney, 2011;Balbinot Junior et al, 2018), which alter the yield components when their architecture and morphology are changed, providing equivalent yield even in a wide range of sowing densities (De Bruin & Pedersen, 2008;Balbinot Junior et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Grain, oil, and protein production on soybean stems and branches under reduced densities

Werner

Silva

Ferreira

et al. 2021

Agraria

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The reduction of sowing density is a strategy that aims to reduce production costs with no losses in grain yield. This study aimed to evaluate the yield components and contents of protein and oil in grains from branches and stems of two soybean cultivars as a function of the reduction in sowing density. The experiments were conducted in two growing seasons (2016/17 and 2017/18) in Londrina, PR, Brazil. Two soybean cultivars were evaluated: BRS 1010 IPRO and NS 5959 IPRO. The experimental design was completely randomized blocks in a split-plot scheme, with five replications. Plots consisted of five sowing densities (100, 80, 60, 40, and 20% of that indicated by the cultivar breeder) and subplots consisted of two plant strata (branches and stems). The number of pods m −2 and grain, protein, and oil yield increased in the branches and decreased in the stems with a decrease in sowing density. The number of grains per pod is higher in the stems than in the branches, regardless of the cultivar. The protein content in the grains is higher in the branches than in the stems for the cultivar BRS 1010 IPRO and decreased with a reduction in sowing density. The thousand-grain weight of the cultivar NS 5959 IPRO decreased with a reduction in sowing density. The oil content in the grains was not influenced by the studied factors.

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Section: Introductionmentioning

confidence: 99%

Grain, oil, and protein production on soybean stems and branches under reduced densities

Werner

Silva

Ferreira

et al. 2021

Agraria

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“…The effects caused by the heterogeneity of longitudinal distribution of seeds are worse in crops that cannot compensate for this factor, such as corn (Sangoi et al, 2019) and sunflower (Pereira & Hall, 2019). The effect of an irregular deposition is little in crops that have phenotypic plasticity, such as soybean, but it still causes productivity losses (Beliavskaya, 2017;Büchling et al, 2017;Junior et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Influence of Seed Tube Curvature on Seed Longitudinal Distribution

et al. 2020

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Studies on the longitudinal distribution of seeds in the sowing row seek to improve crop homogeneity, thus generating high productivity. In this context, seed tubes must be analyzed for their angular curvature. Thus, this study aimed to evaluate the influence of the seed tube curvature on the longitudinal distribution of corn and soybean seeds at different speeds. Two experiments were conducted completely randomized in a double factorial design. The first factor consisted of the seed tube curvature (straight and curved) and the second factor consisted of sowing speeds (1.11, 1.39, and 1.67 m s −1 for corn and 1.39, 1.67, 1.94, and 2.22 m s −1 for soybean), with five replications. The parameters analyzed to measure the longitudinal distribution were the number of seeds per meter, average spacing, double, flawed, and acceptable spacings, coefficient of variation, and precision index. The results were subjected to normality and homogeneity tests of residuals, followed by an analysis of variance and Tukey test, when significant. The curved seed tube showed the highest efficiency in the measured parameters for both corn and soybean. The increase in sowing speed had a negative influence on the evaluated parameters, especially in the soybean crop.

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“…(2014), soybean breeding developed cultivars with a better branching capacity, which provided the culture with a greater potential to compensate for yield in plant stands that are less than ideal. Studies conducted in Brazil have verified that the most relevant mechanism that confers phenotypic plasticity in soybean cultivars at low seeding rates is the production of pods in the branches; these results were obtained using cultivars with determinate and indeterminate growth types (Balbinot, Oliveira, Franchini et al., 2018; Balbinot Jr., Oliveira, Zucareli et al., 2018).…”

Section: Discussionmentioning

confidence: 94%

Soybean yield and profitability are affected by the spatial distribution of seeds in rows and seeding rate

Coelho,

Sangoi,

Sapucay

et al. 2023

Agronomy Journal

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Soybean [Glycine max (L.) Merr.] yield and profitability can be affected by plant‐to‐plant spatial uniformity and sowing rate. This study aimed to evaluate the agronomic and economic performance of soybean in relation to the spatial distribution of seeds in rows and seeding rates. A field experiment was conducted during the 2018–2019 and 2019–2020 growing seasons in Londrina, Paraná state, Brazil. We evaluated three coefficients of variation of seed distribution in rows (VDS; 0%, 50%, and 100%) and four seeding rates (350,000, 262,500, 175,000, and 87,500 seeds ha−1), which corresponded to 100%, 75%, 50%, and 25% of the recommended seeding rate of the cultivar BRS 1003 IPRO, respectively. Sowing was performed manually to ensure that seed distribution accurately adhered to the experimental setup. Soybean yield components, yield, and profitability were then evaluated. The lower VDS improved the yield by 374 kg ha−1 compared to the higher VDS, and increased the profitability by $ 334,70 ha−1 in 2019–2020. A seeding rate of 262,500 seeds ha−1 yielded the highest grain yield. The highest soybean profitability was achieved at a seeding rate 6.5% lower than that which produced the highest yield. Branching is essential in compensating for lower seeding rates and plants with uneven spatial distributions. The present study shows that equidistant distribution of seeds in rows optimizes grain yield.This article is protected by copyright. All rights reserved

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Analysis of phenotypic plasticity in indeterminate soybean cultivars under different row spacing

Cited by 8 publications

References 19 publications

Grain, oil, and protein production on soybean stems and branches under reduced densities

Grain, oil, and protein production on soybean stems and branches under reduced densities

Influence of Seed Tube Curvature on Seed Longitudinal Distribution

Soybean yield and profitability are affected by the spatial distribution of seeds in rows and seeding rate

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