Sistemas de semeadura e manejo do solo no desenvolvimento da cultura da soja
Data
2013-12-11
Autores
Ormond, Antonio Tassio Santana
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Universidade Federal de Mato Grosso
Resumo
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.
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ORMOND, Antonio Tassio Santana. Sistemas de semeadura e manejo do solo no desenvolvimento da cultura da soja. 2013. 71 f. Dissertação (Mestrado em Engenharia Agrícola) - Universidade Federal de Mato Grosso, Instituto de Ciências Agrárias e Tecnológicas, Rondonópolis, 2013.