Fitonematoides associados às culturas da cana-de-açúcar (Saccharum spp.) e inhame (Dioscorea spp.) nas aldeias brejinho e três rios, município Marcação - PB

Abstract

The Northern Coast of Paraíba has diverse agricultural production areas, from sugar cane monocultures to crops for food and family sustenance. Phytonematoids affect a wide range of crops, and often cause damage to crop yields. Therefore, the present work aimed to evaluate the situation of sugarcane and yam crops on the presence of parasitic nematodes of plants and free - living nematodes in the soil. The study was carried out in the city of Marcação-PB, in two Potiguara indigenous villages (Brejinho and Três Rios), where two areas were selected, one with sugarcane and the other with yam cultivation, and soil sampling in the rhizosphere Of plants. The samples were collected along the zigzag areas, to be representative, and soon afterwards, taken to the cooling room, until transfer to the phytopatology laboratory of the Agricultural Sciences Center - UFPB. The identification of the nematodes was carried out by the centrifugal flotation method in sucrose solution. There was greater diversity and quantity of phytonematoids in sugarcane cultivation. The most abundant genera in the two study areas were Meloidogyne sp and Pratylenchus sp.