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Simulação da necessidade de irrigação no estado do Rio Grande do Sul para compensar perdas por deficiência hídrica de milho, soja e feijão
(Universidade Federal de Santa Maria, 2004-02-27)
The temporal and spatial variability of the rainfall amount and its distribution is usually the major cause of agricultural yield losses. These variables are responsible for the oscillations in yields of Spring and Summer ...
Desenvolvimento e calibração de um mini-tanque evaporimétrico
(Universidade Federal de Santa Maria, 2004-02-27)
The present work had as aim a development and calibration of a small evaporation pan comparing its evaporation with class A pan and its capability to estimate the reference evapotranspiration comparing it with the ...
Simulação econômica de rotação de culturas irrigadas na região central do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2004-10-01)
An agricultural production system is constituted by a succession of processes divided in subsystems in which it is emphasized the carriage of productive process related to the environment. In these subsystems, there are ...
Estudo da dinâmica hídrica de um reservatório afetado pela construção de um segundo reservatório a montante
(Universidade Federal de Santa Maria, 2004-07-23)
The construction of reservoirs in sequence in the same basin has produced great problems in rural environment. It is supposed that reservoirs constructed in downstream of a second reservoir have their discharge affluent ...