Atributos indicadores de qualidade de solos afetados por sais no perímetro irrigado de São Gonçalo-PB.

Abstract

Soils from arid and semi-arid regions present a high risk of salinization and changes in soil use in these regions can trigger salinization processes by anthropic factors, such as excessive irrigation and/or saltwater use. Therefore aiming with this work had the objective of evaluating the chemical and physical attributes of soils in areas affected by salts in the Irrigated Perimeter of São Gonçalo (PISG). The design was completely randomized, with three replications and the areas were defined as follows: two with predominance of coconut, being slightly affected by salts and one moderately affected (Areas 1 and 2), and an area of anthropized Caatinga, with predominance of jurema Mimosa tenuiflora (Wild) Poir, and little affected by salts, defined as reference area (Preserved Area - R). Five soil samples were collected, in the superficial layer of depth 0 to 20 cm. The Deterioration Index was calculated for the individual and collective attributes by means of the chemical and physical attributes in relation to the reference area. Differences were observed in the chemical and physical indicators between the predominant areas of coconut trees affected by salts in relation to the Caatinga area, predominantly jurema Mimosa tenuiflora (Wild) Poir, and poorly affected by salts, used as a reference.