Evaluation of the soybean nutritional status for the methods of sufficiency level and DRIS

Authors

  • Nelson Harger Universidade Estadual de Londrina
  • Roberto Fioretto Universidade Estadual de Londrina
  • Ricardo Ralisch Universidade Estadual de Londrina

DOI:

https://doi.org/10.5433/1679-0359.2003v24n2p219

Keywords:

Nutritional evaluate, Soybean, DRIS.

Abstract

The aim of this experiment was to evaluate the nutritional behavior of 4 soybean varieties with different maturation cycles such as: Embrapa 48, BRS 133 and BRS 134, under field conditions. Soybean was sowed in strips of 3,15m x 30m., with three replications. Leaf samples included 30 trifoils, starting from 25 days after emergency (DAE) up to beginning of flowering stage. Sufficiency level and DRIS (Diagnosis Recommendation Integrated System) methods were used to evaluate the soybean nutritional status. In the first method leaf samples were collected at the beginning of flowering stage and for the DRIS method at vegetative stage up to beginning flowering stage. The results showed that the DRIS presented suitable diagnosis for the soybean at vegetative stage with 27 (DAE) up to flowering stage, that means a possibility to antecipate leave samples for DRIS diagnosis.

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Author Biographies

Nelson Harger, Universidade Estadual de Londrina

Aluno de Mestrado do Programa de Pós-Graduação em Agronomia - UEL – Caixa Postal 160, CEP 86802190 - Apucarana, Pr.

Roberto Fioretto, Universidade Estadual de Londrina

Professor Dr., Departamento de Agronomia, CCA, UEL, CP 86.051-990 Londrina – PR.

Ricardo Ralisch, Universidade Estadual de Londrina

Professor Dr., Departamento de Agronomia, CCA, UEL, CP 86.051-990 Londrina – PR.

Published

2003-05-10

How to Cite

Harger, N., Fioretto, R., & Ralisch, R. (2003). Evaluation of the soybean nutritional status for the methods of sufficiency level and DRIS. Semina: Ciências Agrárias, 24(2), 219–224. https://doi.org/10.5433/1679-0359.2003v24n2p219

Issue

Section

Articles