Equipments to manage soil and irrigated rice straw for the sequential sowing of soybean in tropical floodplains

Authors

  • José Geraldo da Silva Embrapa Arroz e Feijão
  • Adriano Stephan Nascente Embrapa Arroz e Feijão
  • Pedro Marques da Silveira Embrapa Arroz e Feijão

Abstract

The presence of straw hinders the sowing of soybean cultivated in succession to rice, in areas irrigated by flooding. This study aimed to evaluate the combination of different configurations of a rice harvester and subsequent activities in the operational and energetic demand of rice straw management and in the soil surface roughness, in order to cultivate soybean in succession. Three independent experiments were conducted in a completely randomized design, as well as evaluated the fuel consumption, effective operating speed, working capacity and final surface roughness of the ground. The energy costs of harvesting rice do not increase when the automated harvester operates with a spreader to distribute the straw on the ground and to avoid the formation of furrows. The presence of rice plant residues in the field increases the skidding of the tractor when pulling the knife-roller, with a consequent reduction of the operating speed, but this does not affect the operational capacity and the fuel consumption. The increase in the number of light harrowings, from one to two operations, in areas worked with knife-roller or intermediate harrow, requires more time and fuel in the management of the soil and rice straw, but leaves the ground with less surface roughness. The management system with knife-roller operation and two light harrowings is the most appropriate method to prepare the soil for soybean cultivation after rice, because it provides the best combination of technical and energetic performance.

KEYWORDS: Soil preparation, soil surface roughness, vegetation cover, fuel consumption.

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Author Biographies

José Geraldo da Silva, Embrapa Arroz e Feijão

Doutor em Mecanização Agrícola

Adriano Stephan Nascente, Embrapa Arroz e Feijão

Doutor em Fitotecnia

Pedro Marques da Silveira, Embrapa Arroz e Feijão

Possui graduação em Agronomia pela Universidade Federal de Viçosa (1973) , mestrado em Engenharia Agrícola pela Universidade Federal de Viçosa (1976) e doutorado em Agronomia (Solos e Nutrição de Plantas) pela Universidade Federal de Viçosa (1986) . Atualmente é PESQUISADOR da Empresa Brasileira de Pesquisa Agropecuária e Professor Convidado da Universidade Federal de Goiás. Tem experiência na área de Engenharia Agrícola , com ênfase em Engenharia de Água e Solo. Atuando principalmente nos seguintes temas: Aeracao do Solo, Drenagem, Drenagem Interna, Excesso de Agua, Feijao e Manejo da Irrigacao.

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Published

2019-07-19

How to Cite

SILVA, J. G. da; NASCENTE, A. S.; SILVEIRA, P. M. da. Equipments to manage soil and irrigated rice straw for the sequential sowing of soybean in tropical floodplains. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 49, p. e54879, 2019. Disponível em: https://revistas.ufg.br/pat/article/view/54879. Acesso em: 18 dec. 2024.

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Section

Research Article