Variabilidade espacial e temporal na seção transversal de sulcos no perímetro irrigado de São Gonçalo-PB.

Abstract

The spatial and temporal variability in the furrow irrigation cross-sectional section was verified by performing two field evaluations, one during the first irrigation event and another during the sixth one. The cross-section profile was measured when the recession phase was concluded in these two irrigation events. It was verified that occurred spatial and temporal variations in the furrow cross-section. Spatially, the dimension that more varied was the maximum depth, which presented variations up to 100%. However, the furrow base width was the dimension that more suffer variations along the time, increasing 45% from the first to the sixth irrigation event.