DISTRIBUIÇÃO DE ZINCO E NEMATOIDE NO SOLO LOCALIZADO EM TORNO DO ATERRO SANITÁRIO

Abstract

The increases in the levels of heavy metals (PM) in the soil can be attributed to the excessive use of agrochemicals. Nematodes have different ways of adapting to changes that occur in the environment caused by several factors, being used in many cases as soil bioindicators. The objective was to evaluate the distribution of Zinc (Zn) and the possible correlation between the nematodes present in soil located around the Landfill of Ceres-GO. Samples were collected in a random zigzag path in and around the dump area: sugarcane area, pasture and near the swamp. The following were determined: fertility, soil granulometry, nematode taxonomy and Zn micronutrient. To make a correlation between the n variables, the principal components analysis (PCA) was used using the PAST software, with the sum of the principal components (P1 and P2) being above 70%. The nematode population was inversely proportional to zinc levels. The highest concentrations of Zn were observed in the dump area in sandy textured soils, which presented high fertility ranging from 70% to 95%. The pH in the sanitary landfill area was in the 7 scale, with aluminum (Al) complexation. In the pasture area, the organic matter (M.O) content was 54.4 g/dm3, being the highest. Among all existing nematode genera, Meloidogyne spp. There was a positive correlation between the variable potassium (K), phosphorus (P), calcium (Ca) and silt. Meloidogyne spp. in the sugarcane area it presented higher population density associated with clayey texture.