Morphoespecies richness of nematoides in the olericulture areas in Palmas - PR

Abstract

The nematodes are invertebrate, multicellular animals, constituents of a very diversified group estimated at one million species and the ecological conditions of the soil are closely related to their biodiversity. The objective of this paper is to perform a survey of the diversity of nematode species on properties that work with olericulture in Palmas, Paraná state. Soil samples were collected at four sites in the city, with a Cfb type climate (temperate, humid and mild summer). Among the sites sampled are: native forest area (MN); farm property with conventional farming system with the use of agrochemicals (A); two organic farming system properties, one located in urban area (B) and the other in rural area (C). The greatest diversity of phytonutrient genera found was found in both organic (C and B, respectively) properties, which did not differ significantly from each other, but in relation to the native forest area (MN) and conventional cropping system (A), in that order. The number of nematodes as well as the diversity of genera identified were higher in the properties that exert the organic cultivation system.