Reação de amendoim, crotalaria, gergelim e sorgo granífero à Meloidogyne javanica

Abstract

Nematodes have become a great agronomic concern due to their wide geographic distribution and their capacity for accelerated reproduction. Based on this information, the objective of this work is to evaluate the reaction of peanuts, Crotalaria ochroleuca, sesame and grain sorghum to Meloidogyne javanica, in different concentrations of inoculum. The experiment was conducted in a greenhouse with a completely randomized design in a 4x3 factorial, the first factor being the cultures and the second the different concentrations of inoculum plus the control. Inoculation occurred 12 days after planting, with the culture remaining up to 60 days after inoculation. After this period, the roots underwent the nematological extraction process to quantify the final population of M. javanica in the crops. Based on the results obtained, it is concluded that sorghum is a crop highly susceptible to the nematode, as its population has increased. On the hand, the use of crops such as peanuts, sesame and sunn hemp are excellent options for crop rotation and succession in areas with the presence of Meloidogyne javanica, as they are determined to be poor hosts for this phytonematode.