Increasing population density reduces soybean yield components and productivity

Authors

DOI:

https://doi.org/10.14393/BJ-v37n0a2021-53612

Keywords:

Glycine max (L.) Merrill, Plant Population, Spatial Arrangement, Yield.

Abstract

Studies addressing the interaction of different spatial arrangement in soybean are needed in order to achieve management that leads to higher grain yield associated with rational seed use. The objective of this work was to evaluate the yield components and productivity of an undetermined growth type soybean as a function of different row spacing and plant densities. The treatments consisted of three row spaces (0.25, 0.35 and 0.45 m) and three plant population densities (30, 40 and 50 plants/m²). There was no interaction of row spaces and plant population on soybean yield. Regarding the overall spacing average, the grain yield of the population of 30/m² plants was higher than the productivity of the populations of 40 and 50/m² plants. The largest populations reduce plant sizes due to greater competition between plants. In addition, smaller populations promote higher individual plant yields due to the increase components of the production. This characteristic is defined as the ability of the plant to change its morphology and yield components in order to adapt to the conditions imposed by the spatial arrangement.

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References

ANDRADE, F.R., et al. Características agronômicas e produtivas da soja cultivada em plantio convencional e cruzado. Revista de Agricultura. 2016, 91(1), 81-91. https://doi.org/10.37856/bja.v91i1.181

BALBINOT JUNIOR, A.A., et al. Semeadura cruzada em cultivares de soja com tipo de crescimento determinado. Semina: Ciências Agrárias. 2015a, 36(3), 1215-1226. http://dx.doi.org/10.5433/1679-0359.2015v36n3p1215

BALBINOT JUNIOR, A.A., et al. Espaçamento reduzido e plantio cruzado associados a diferentes densidades de plantas de soja. Semina: Ciências Agrárias. 2015b, 36(5), 2977-2986. http://dx.doi.org/10.5433/1679-0359.2015v36n5p2977

BALBINOT JUNIOR, A.A., et al. Índice de área foliar da soja em função da redução da densidade de semeadura. Boletim de Pesquisa e Desenvolvimento 17. Londrina: Embrapa Soja, 2018.

BRASIL. Ministério da Agricultura, Pecuária e Abastecimento. Regras para Análises de Sementes. Ministério da Agricultura, Pecuária e Abastecimento. Secretaria de Defesa Agropecuária. Brasília: MAPA/ACS, 395p, 2009. Available from: https://www.gov.br/agricultura/pt-br/assuntos/insumos-agropecuarios/arquivos-publicacoes-insumos/2946_regras_analise__sementes.pdf

FEHR, W.R. and CAVINESS, C.E. Stages of soybean development. Cooperative Extension Service, Agriculture and Home Economics Experiment Station, 1977.

FERREIRA, A.S., ZUCARELI, C., WERNER, F. and BALBINOT JUNIOR, A.A. Plant spatial arrangement affects grain production from branches and stem of soybean cultivars. Bragantia. 2018, 77(4), 567-576. https://doi.org/10.1590/1678-4499.2017285

GAN, Y., STULEN, I., VAN KEULEN, H. and KUIPER, P.J. Physiological response of soybean to plant density. Field Crops Research. 2002, 74(2-3), 231-241. https://doi.org/10.1016/S0378-4290(01)00212-X

HANWAY, J.J. and THOMPSON, H.E. How a soybean plant develops. Special Report 53. Iowa State University of Science and Technology Cooperative Extension Service, 1967.

HEIFFIG, L.S., et al. Fechamento e índice de área foliar da cultura da soja em diferentes arranjos espaciais. Bragantia. 2006, 65(2), 285-295. https://doi.org/10.1590/S0006-87052006000200010

LUCA, M.J. and HUNGRIA, M. Plant densities and modulation of symbiotic nitrogen fixation in soybean. Scientia Agricola. 2014, 71(3), 181-187. https://doi.org/10.1590/S0103-90162014000300002

MAUAD, M., et al. Influência da densidade de semeadura sobre características agronômicas na cultura da soja. Revista Agrarian. 2010, 3(9), 175–181.

PETTER, F.A., et al. Elevada densidade de semeadura aumenta a produtividade da soja? Respostas da radiação fotossinteticamente ativa. Bragantia. 2016, 75(2), 173-183. https://doi.org/10.1590/1678-4499.447

PROCÓPIO, S.O., et al. Plantio cruzado na cultura da soja utilizando uma cultivar de hábito de crescimento indeterminado. Revista de Ciências Agrárias. 2013, 56(4), 319-325. http://dx.doi.org/10.4322/rca.2013.048

RAMBO, L., et al. Rendimento de grãos da soja em função do arranjo de plantas. Ciência Rural. 2003, 33(3), 405-411. https://doi.org/10.1590/S0103-84782003000300003

SANTOS, H.G., et al. Sistema brasileiro de classificação de solos. Brasília: EMBRAPA, 2018.

SOUZA, R., TEIXEIRA, I., REIS, E. and SILVA, A. Soybean morphophysiology and yield response to seeding systems and plant populations. Chilean Journal of Agricultural Research. 2016, 76(1), 3-8. http://dx.doi.org/10.4067/S0718-58392016000100001

TOURINO, M.C., REZENDE, P.M. and SALVADOR, N. Espaçamento, densidade e uniformidade de semeadura na produtividade e características agronômicas da soja. Pesquisa Agropecuária Brasileira. 2002, 37(8), 1071-1077. https://doi.org/10.1590/S0100-204X2002000800004

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Published

2021-08-20

How to Cite

DE ALMEIDA SILVA, M., DE SANTANA SOARES, A.C.., RODRIGUES ALVES CARNIETTO, M. and DE MORAES BARBOSA, A., 2021. Increasing population density reduces soybean yield components and productivity. Bioscience Journal [online], vol. 37, pp. e37042. [Accessed5 November 2024]. DOI 10.14393/BJ-v37n0a2021-53612. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/53612.

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Section

Agricultural Sciences