Dimensionamento de irrigação por sulco, com redução de vazão - nova metodologia.

Abstract

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 that advanced time to be less than or equal the opportunity time, and to compare with other metodologies, like: a) Inflow without cut-back based on the maximum efficiency. b) Cut-back according to metodology presented by Walker and Skogerboe (1987). Water application efficiency for the proposed methodology was higher than the one for continuous irrigation based on the maximum efficiency. The methodology proposed by Walker & Skogerboe (1987) may give a wrong application efficiency and a poor distribution uniformity.