The water table depth and soil global density effect on the effective depth of the grape root system was evaluated in seven areas with subsurface drainage. The water table depth and soil global density have a considerable ...

Interceptor drains were suggesrted for containing subsurface contamination of agricultural chemicals. The interceptor drains treated here-in have their objective to drain the upper part of the aquifer to capture the ...

Although, melon (Cucumis melo, L.) is a very important crop for Brazilian economy there is still a great need for basic research topics such as the use of fertirrigation. In order to approach this need a completely randomized ...

This paper aims to quantify the influence of the nitrogen levels, irrigation depths and water application uniformity on bean yield and profit. It was focused two situations applied producers with fixed and semi-fixed ...

This paper presents an alternative method for the optimal design of water distribution system. To obtain the minimum cost in the design of a branching system, it was established a nonlinear programming model. This methodology ...

To evaluate the performance of a non-rotating emitter (microsprayer 7200) a series of field trials were done, with the equipment running for 1,5; 3,0; and 4,5 hours. Although surface water distribution based on present ...

An analysis of events such maximum precipitation (mm) to determite the return period times in the Gumbel distribution and Fuller was carried out to support projecto in the hydraulic area. The data on maximum annual ...

The objective of this study was to assess the behavior of cut-back metodology at one half of the irrigation time, independent on the constraint advance time to be the same as the opportunity time, but with the condition ...

This work aimed to building 4 ejectors for different tubes diameter, to use on air suction from inside of hydraulic pumps, by a simple and easy way, giving the methodology to building another ejectors, as well as evaluate ...

With a hand-held infrarede thermometer were effected everyday measurements of canopy and air temperatures on bean submited to four application water regimes in order to calculate the stress days degree. With exception ...