Atributos químicos do solo irrigado com efluente de esgoto tratado, fertirrigação convencional e água de poço

Abstract

The irrigation with treated sewage effluent has potential for irrigation of agricultural crops, providing nutrients to the soil influenced by the irrigation system. The objective of this study was to evaluate the chemical attributes in soil layers from 0 to 0.2 m and 0.2 to 0.4 m, irrigated by surface drip (Ig) and microsprinkler (Im) using well water (Ap), treated sewage effluent (Ar) and conventional fertigation (Af). The experiment was carried out under field conditions from October 2009 to November 2010 in area cultivated with banana cv. Grand naine. The statistical design was a randomized block with factorial 3 x 2, and four replications. Drip irrigation and microsprinkler influence differently in the content of some soil chemical properties; most chemical attributes evaluated in the soil increase significantly in the three types of water and the two evaluated soil layers; Na and B content decreased or remained stable in the soil; the application of drip water increases more sharply P, S, AT and SB levels in the most superficial layer and the microsprinkler in the deepest layer.