FITONEMATOIDES ASSOCIADOS AO COENTRO Coriandrum sativum NO MUNICÍPIO DE LAGOA SECA - PB

Abstract

Coriander is a dicotyledonous vegetable widely used in Brazil as a seasoning in cooking, especially in the North and Northeast regions. These plants are highly vulnerable to attack from diseases, especially those of fungal, bacterial and nematode-caused origin. Several species of phytonematoids can attack Coriandrum sativum L coriander, especially Rotylenchulus reniformes that have caused significant losses in production. The objective of this work was to identify the genera of phytonematoids associated to coriander culture in the municipality of Lagoa Seca - PB. Soil and aerial parts of the plants were collected in 16 rural properties of the municipality. From the soil samples, the extraction was done by the centrifugal flotation method in sucrose solution, identification and quantification of nematodes of each property. In addition, the fresh mass and dry mass of the aerial part of the plants and the statistical analysis of the data were evaluated. Three genera of phytonematoids were found in association with coriander culture, Rotylenchulus sp., Helicotylenchus sp. and Trichodorus sp .. The predominant nematode in the municipality plantations is Rotylenchulus sp., found in all sampled properties, with a population ranging from 9 to 1784 specimens. It was not possible to correlate the population of phytonematoids with the production of coriander in these conditions. Therefore, new work is needed to verify the real role of phytonemarcoids in reducing productivity in coriander plantations of the municipality of Lagoa Seca - PB.