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Seeding rate in soybean according to the soil apparent electrical conductivity.
Moura, Suzany S; FranÇa, Luiz T; Pereira, Vitor S; Teodoro, Paulo Eduardo; Baio, FÁbio H R.
Afiliação
  • Moura SS; Universidade Federal de Mato Grosso do Sul, Departamento de Agronomia, Rodovia MS 306, Zona Rural, 79560-000 Chapadão do Sul, MS, Brazil.
  • FranÇa LT; Universidade Federal de Mato Grosso do Sul, Departamento de Agronomia, Rodovia MS 306, Zona Rural, 79560-000 Chapadão do Sul, MS, Brazil.
  • Pereira VS; Universidade Federal de Mato Grosso do Sul, Departamento de Agronomia, Rodovia MS 306, Zona Rural, 79560-000 Chapadão do Sul, MS, Brazil.
  • Teodoro PE; Universidade Federal de Mato Grosso do Sul, Departamento de Agronomia, Rodovia MS 306, Zona Rural, 79560-000 Chapadão do Sul, MS, Brazil.
  • Baio FHR; Universidade Federal de Mato Grosso do Sul, Departamento de Agronomia, Rodovia MS 306, Zona Rural, 79560-000 Chapadão do Sul, MS, Brazil.
An Acad Bras Cienc ; 92(suppl 1): e20181112, 2020 Jul 29.
Article em En | MEDLINE | ID: mdl-32756839
This work aimed to study different seeding rates in soybean, at management zones determined by the mapping of the soil apparent electrical conductivity (ECa) and its relationships with plant phenology and grain yield (GY). The experiment consisted of a completely randomized design, with six replications. The plant population ranged between 311,000, 360,000, and 422,000 plants ha-1, and the fixed population (360,000 plants ha-1). The management zone with the least yield potential, received the highest seed population. The management zone with the highest plant vigor potential, received the lowest seed population. The variables plant height, Normalized Difference Vegetation Index (NDVI) at 50, 66, and 92 days after emergence (DAE), one hundred-grain weight, and GY were analyzed. ECa maps can be used to decide the seed population of the soybean. The decision strategy of increasing 20% of the seed soybean population on the smaller ECa map zones, and decreasing 20% seed population on higher ECa zones was effective and resulted in similar GY, even with the negative pressure of the high resistance of penetration (RP) values in some zones. GY map variability was influenced by ECa 0-0.2 m, by NDVI at 92 DAE and by RP 0.4-0.6 m soil layer.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Glycine max Tipo de estudo: Clinical_trials / Prognostic_studies Idioma: En Revista: An Acad Bras Cienc Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Glycine max Tipo de estudo: Clinical_trials / Prognostic_studies Idioma: En Revista: An Acad Bras Cienc Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil