Sistemas de semeadura e manejo do solo no desenvolvimento da cultura da soja

• Ano de defesa: 2013
• Autor(a) principal: Ormond, Antonio Tassio Santana
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Mato Grosso; Brasil; Instituto de Ciências Agrárias e Tecnológicas (ICAT) – Rondonópolis; UFMT CUR - Rondonopólis; Programa de Pós-Graduação em Engenharia Agrícola
• Palavras-chave em Português: Glycine max; Caracteres agronômicos; Demanda energética; CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA; Agronomic characters; Energetic demand
• Link de acesso: http://ri.ufmt.br/handle/1/1099

The manipulation the line spacing and plant density, aims to establish the most adequate arrangement to obtain greater productivity and adaptation to mechanized harvest. The present study aimed to evaluate the agronomic characteristics, and the operational performance of agricultural machines in the different systems soil tillage systems and soybean sowing. The experiment was conducted in field conditions in OXISOL. It was used three systems soil tillage (conventional tillage, reduced and no-tillage) and three sowing systems for soybean (conventional sowing, cross-sowing and dense sowing). The parameters evaluated were: Severity and number of pustules cm-2 of Asian rust, number of days to maturity, plant height at flowering maturation and insertion of first pod; plant population, grain yield; weight of 100 grains; chlorophyll index, stomatal density and bulk density; energetic demand of agricultural machinery. After the statistical analysis it was verified that the variables: plant height at flowering, plant population and grain yield obtained the highest performance using reduced tillage with dense sowing system. For variables insertion heights of first pod, stomatal density and number of pustule cm-2 the satisfactory results were observed with the interaction of reduced tillage of soil x cross sowing. For the severity of Asian rust and plant height at maturity interaction tillage x dense sowing showed the best results. The no-tillage system obtained the lowest energy demand and lower fuel consumption.