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- Title
Consumo de água e produção de grãos do feijoeiro irrigado em sistemas plantio direto e convencional.
- Authors
Bizari, Douglas Roberto; Matsura, Edson Eiji; Roque, Marcio William; de Souza, Anderson Luiz
- Abstract
The inappropriate use of water resources in agriculture, to get higher yields, has caused negative impacts on soil water storage, reducing the efficiency of irrigated productive systems. The aim of this research was to study water use through crop coefficients for sprinkler-irrigated beans at different development stages, in addition to the production of grains and their components, in no tillage and tillage crop systems. Irrigation management was monitored withtensiometers to maintain the soil water content level between 28% (at the moment of irrigation) and 31% (field capacity). The crop evapotranspiration level (ETc) was obtained from the soil water balance and the reference evapotranspiration (ETo) using the Penman-Monteith method. The results indicate that bean crop coefficients show lower values in the no tillage system than in the conventional tillage system, during flowering and pod formation stages. The bean plants in no tillage system are more efficient in relation to water use than the conventional tillage system, because in this system, the bean crop shows higher grain yield with lower water consumption.
- Subjects
AGRICULTURAL water supply; CROP yields; BEAN plant irrigation; SOIL moisture conservation; TILLAGE; WATER efficiency; SPRINKLER irrigation; IRRIGATION management; EVAPOTRANSPIRATION
- Publication
Ciência Rural, 2009, Vol 39, Issue 7, p2073
- ISSN
0103-8478
- Publication type
Article
- DOI
10.1590/S0103-84782009000700018