Uso de resíduo de gesso da construção civil como corretivo de solo salino-sódico.

Abstract

An experiment in columns of soil was carried out in Laboratorio de Aproveitamento de Resíduos e Mecânica dos Solos at Universidade Federal Rural de Pernambuco, with the objective of evaluating the effect of leachate lamina application and two kinds of gesso in order to recupere affected salted soils in irrigated belt of Custódia, Pernambuco State, Brazil. Treatments were arranged in a completely randomized design in a factorial 2 (kinds of gesso: jazzed and recycled) × 5 (laminas of leachate: 0.5, 1.0, 1.5, 2.0, 2.5 volume of soil pores), with three replications. It was determined electric conductivity and sodium concentration in soil leachate. Recycled and jazzed gesso presented similar response to salt leaching and soluble sodium in soil.