The effect of longitudinal distribution and seed depth on grain yield of common bean

Silveira, Pedro Marques da; Nascente, Adriano Stephan; Silva, José Geraldo da

doi:10.1590/2317-1545v40n178801

Cited by 6 publications

(6 citation statements)

References 20 publications

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“…The time between planting and emergence is longer in seeds planted at greater depths, favoring the intraspecific competition. The combination of uneven seed spacing and planting depth variability may exacerbate the negative effects on grain yield (Silveira et al 2018). Sangoi et al (2012) found that an increase in within-row spatial distribution negatively affects grain yield in maize.…”

Section: Resultsmentioning

confidence: 99%

Seed spacing variability reduces common bean yield

Bisognin

Pias

Vian

et al. 2019

Pesqui. Agropecu. Trop.

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An uneven seed spacing in the sowing row increases the plants intraspecific competition for environmental resources, potentially lowering grain yields. This study aimed to assess the yield and yield components of common bean plants, as a function of coefficients of variation (0 %, 20 %, 40 % and 60 %) of seeds in the sowing row. The main yield components, plant traits and grain yield were evaluated. The yield component that best explains the seed spacing variability on grain yield is the number of grains per plant (r = 0.94). Grain yield declines linearly as the seed spacing variability increases: 81.5 kg ha-1 (4.4 %) for every 10 % increase in the coefficient of variation. Thus, a less longitudinal seed spacing variability contributes to achieving higher grain yields.

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Section: Resultsmentioning

confidence: 99%

Seed spacing variability reduces common bean yield

Bisognin

Pias

Vian

et al. 2019

Pesqui. Agropecu. Trop.

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show abstract

“…Studying beans, Silveira et al [19] observed that very small distance between plants can cause greater competition between them and reduce the yield per plant and per area. In contrast, greater distances between plants may mean reduction in yield per area since more empty spaces were left, giving to the weeds a chance to arise.…”

Section: Resultsmentioning

confidence: 99%

Effect of the Sowing Speed on the Distribution Regularity of Maize Seeds

Nadin

Pereira

Rondon

et al. 2019

JEAI

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This work aimed to evaluate the influence of the sowing speed on the regularity of longitudinal distribution of maize seeds through a pneumatic metering seeder. The experimentation of 4 sowing speeds (4, 6, 8 and 10 km h-1) was performed in randomized blocks design with four replicates. The parameters evaluated were the mean distance between plants, coefficient of variation of the distance between plants, percentage of acceptable, flawed and double spacings, precision index, plant stand, initial population, mean seed deposition depth, and coefficient of variation of the seed Nadin et al.; JEAI, 37(2): 1-8, 2019; Article no.JEAI.49124 2 deposition depth. The increase in the operating speed linearly reduced the percentage of acceptable spacings, plant stand, initial population, and mean seed deposition depth. Conversely, it linearly increased the values of mean distance between plants, coefficient of variation of the distance between plants, percentage of double and flawed spacings, precision index, and coefficient of variation of the deposition depth. Therefore, the increase in the displacement speed of the tractor-seeder set reduced the regularity of the longitudinal distribution of the plants, as well as the sowing quality. Original Research Article

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“…Similar to the title of this paper, many authors are investigating seed distribution with different types sowing machines [15][16][17][18]. Also, the main problem of sowing is to determine longitudinal, lateral and depth seed distribution [17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Partial Differential Equations for Cereal Seeds Distribution

Tomantschger

Tadić

2021

Teh. vjesn.

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During the recent years all crop species achieved the best possible field distribution so a high yield is to be expected. In this paper the solutions of two different diffusion equations are determined, which describe the optimal distribution of cereal grains over a field. Therefore, there are two different partial differential equations of cereal seed distribution-distinction is made between the longitudinal spacing (seeds in a row), and transverse distance (between two rows), as well as the sowing depth. In particular, closed forms of solutions are derived in each case. Although the result of the diffusion equation with respect to the distribution of the lateral seed distance of two adjacent rows is already known, a new solving method is presented in this paper. By this method, the partial differential equation is reduced to an ordinary one, which is easier to solve. In this paper it is shown that the distribution of lateral resp. longitudinal and in-depth wheat seed distances is achieved by a normal Gauss function resp. a log-normal function. Furthermore, it is demonstrated that the fitting functions of the best experimental results of wheat seeding distributions are particular solutions of the individual differential equations. Normal Gauss function describes lateral distribution with R 2 = 0.9325; RSME = 1.2450, and log-normal function describes longitudinal distribution with R 2 = 0.9380; RSME = 1.4696 as well as depth distribution with R 2 = 0.9225; RSME = 2.0187.

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The effect of longitudinal distribution and seed depth on grain yield of common bean

Cited by 6 publications

References 20 publications

Seed spacing variability reduces common bean yield

Seed spacing variability reduces common bean yield

Effect of the Sowing Speed on the Distribution Regularity of Maize Seeds

Partial Differential Equations for Cereal Seeds Distribution

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