Chemical properties of neossolos flúvicos after application of irrigation of rejects desalt machine and of hydroponic system | Propriedades químicas de neossolos flúvicos depois da aplicação de lâminas de irrigação de rejeitos de dessalinizador e de hidro

Abstract

ABSTRACT: Aiming to evaluate the soil salty process of the Ibimirim – PE irrigation project, submitted to the application of the rejects from desalt machine and from hydroponic solution, also primarily originated from desalt machine reject, it was realized an experiment in soil columns, installed in the Soil Mechanic and Residue Use Laboratory of the Universidade Federal Rural de Pernambuco. The treatments were delineated in a randomized blocks with factorial arrangement of two soils (claily and sandy), two types of reject (reject of desalt machine and reject of the hydroponic system) and five salty concentrations (0.53; 1.16; 1.90; 3.52; 4.60 dS m-1), with three replicates. The evaluated variables in the extract of the saturated paste were the electric conductivity (EC) and the relationship of sodium adsorption relationship (SAR). The use of the leaching depths equivalent to three volumes of pores, using rejects both of desalt machine and of hydroponic system didn't provide the neither salty process nor sodium process of the soils studied (EC > 4,00 dS m-1 and SAR 4,00 dS m-1) quando foi utilizados os maiores níveis de condutividade elétrica , entretanto, não ocasionou a sodificação dos solos (RAS < 13 mmol L-1) ½). Palavras-chave: Salinização, meio ambiente e dessalinização.

Keywords

• Salinization, environment and desalination, Salinização, meio ambiente e dessalinização