COVERING HERBICIDE AND POTASSIUM SUBDOSES UNDER CROP-LIVESTOCK INTEGRATION SYSTEM

Authors

  • Paulo Roberto Oliveira Júnior Unimar
  • Ronan Gualberto UNIMAR
  • Paulo Sérgio Rabello Oliveira UNIOESTE
  • Nídia Raquel Costa Unimar
  • Flávia Minotto Montans Unimar

Keywords:

Brachiaria brizantha, Glycine max, herbicides, intercropping, haloxyfop-methyl

Abstract

The objective of this study was to evaluate soybean and Brachiaria forage yields, under a crop-livestock integration system, in terms of increasing covering herbicide and potassium rates. The experiment was carried out in a randomized complete blocks design, in a split-split-plot scheme, with three replications. The treatments were: cultivars (CD 216 and VMax), for plots; herbicide rates (0 g ha-1, 0.24 g ha-1; and 0.96 g ha-1 of haloxyfop-methyl), for split-plots; and potassium doses (30 kg ha-1 and 60 kg ha-1 of K2O), for split-split-plots. VMax presented the highest number of pods per plant, while CD 216 presented the largest number of grains per pods. There was interaction among cultivars and herbicide doses, concerning the one hundred grains mass. For the split-plot, in comparison with VMax, CD 216 showed a higher one hundred grains mass rate. There were no significant levels of herbicide and K for soybean yield under crop-livestock integration. However, the highest CD 216 and VMax yield rates were obtained at 0 g i.a. ha-1 and 0.96 g i.a. ha-1 of the herbicide and 60 kg ha-1 and 30 kg ha-1 of K2O. The K doses which resulted in a higher dry biomass yield rate for Brachiaria brizantha were 30 kg ha-1 of K2O, in consortium with the CD 216 cultivar, and 60 kg ha-1 of K2O, in consortium with VMax.

KEY-WORDS: Brachiaria brizantha; Glycine max; herbicides; intercropping; haloxyfop-methyl.

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Author Biographies

Paulo Roberto Oliveira Júnior, Unimar

Mestrando em Agronomia do Programa Produção Integrada em Agroecossistema da Unimar

Ronan Gualberto, UNIMAR

Prof. Dr. Genética e Melhoramento de Plantas

Coordenador do Curso de Eng. Agonômica da Unioversidade de Marília 

Paulo Sérgio Rabello Oliveira, UNIOESTE

Professor Dr. em Produção Vegetal da Universidade do Oeste do Paraná, Câmpus de Marechal Cândido Rondon.

Nídia Raquel Costa, Unimar

Acadêmica do Curso de Engenharia Agronômica da Unimar.

Flávia Minotto Montans, Unimar

Mestranda em Agronomia do Programa Produção Integrada em Agroecossistema da Unimar.

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Published

2010-08-16

How to Cite

OLIVEIRA JÚNIOR, P. R.; GUALBERTO, R.; OLIVEIRA, P. S. R.; COSTA, N. R.; MONTANS, F. M. COVERING HERBICIDE AND POTASSIUM SUBDOSES UNDER CROP-LIVESTOCK INTEGRATION SYSTEM. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 40, n. 3, p. 242–250, 2010. Disponível em: https://revistas.ufg.br/pat/article/view/4717. Acesso em: 23 nov. 2024.

Issue

v. 40, n. 3, Jul./Sep. 2010

Section

Crop Science

License

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