Condutividade hidráulica de um neossolo flúvico irrigado com água residuária.

Abstract

irrigation with wastewater is a practice increasingly common in semiarid regions, because of scarcity of water resources. However, it may lead to soil hydraulic properties degradation. The objective of this study was to evaluate the effects of different water management strategies, in saturated hydraulic conductivity (Ks) of a Fluvent with and without castor bean cultivation. We settled an experiment in a randomized block design with split plot, with water management in the plots (Tl - Wastewater irrigation + castor cultivation; T2 - Wastewater and good water mixture (1:1 proportion) + castor cultivation; T3 - Good water irrigation + castor bean cultivation; and T4 - wastewater application, without castor cultivation) and cumulative quantity of water applied as the subplots. The Ks increased in plots cultivated with castor plants and irrigates with wastewater, and decreased in plots without cultivation of castor beans and receiving wastewater. The irrigation with freshwater no caused significant changes in soil Ks.