NEMATOIDES FITOPARASITAS NA CULTURA DA CANA-DE-AÇÚCAR (Saccharum spp.) NO MUNICÍPIO DE CAAPORÃ – PARAÍBA.

Abstract

Sugarcane (Saccharum spp.) it is originally from Asia, and is one of the most important tropical agricultural crops, being cultivated on a large scale in several countries of the world. The sugar cane crop has an active and extremely important role in the Brazilian economy. Among the several diseases that attack sugarcane, there are the plant parasitic nematodes, which can cause several damages, from planting to harvesting. Ten plots were sampled, where 12 to 20 sub-samples were collected at a depth of 0-30 cm to form a composite sample with 500 g of soil and 100 g of roots. For the extraction of the nematodes, the technique known as centrifugal flotation in sucrose solution was used, and the nematodes were identified using an optical microscope and counted with the aid of a stereoscope microscope. Several genera of plant parasitic nematodes were extracted and later identified in the soil samples, with emphasis on the genera Meloidogyne, Pratylenchus and Helicotylenchus with higher population densities. The aim of this study was to perform soil and root samplings on 10 plots cultivated with sugarcane in the municipality of Caaporã - PB, to extract and identify the present plant parasitic nematodes.