Fauna edáfica em pastagem perene sob diferentes fontes de nutrientes

Abstract

This study aimed to evaluate the effect of fertilizer sources grazing Tifton 85 on soil fauna and its relation to the physical-chemical parameters of the soil. The experiment was conducted in a Oxisol testing three fertilization sources: 1) organic with application of organic manure the birds bed base (O); 2) organic + mineral O + mineral fertilizer (OM) and 3) mineral fertilizer (M). The experimental design consisted of randomized blocks with three replications. The collection for evaluation of soil fauna was held by traps such as "Tretzel tramps" and, at the same points, soil samples were collected for analysis of chemical attributes, measured penetration resistance and soil moisture. There was a relationship between the abundance of soil fauna groups with some environmental variables and physicochemical soil, especially moisture, organic matter, potassium and phosphorus. The treatment gave the highest values of abundance and diversity of soil fauna, not being different plenty of OM treatment.