INFLUÊNCIA DE RESÍDUOS ORGÂNICOS NO MANEJO DE MELOIDOGYNE JAVANICA EM JILOEIRO

Abstract

Fitonematodes of the Meloidogyne genus are the most important for the jiló (Solanum aethiopicum) culture, which cause a significant reduction in productivity. The nematode high population in the culture can lead to the abandonment of the cultivation activity Addition of organic materials to the soil improves its physicochemical characteristics, favoring growth of plants and making them more tolerant to the fitonematodes attack. Thus, this study aimed to evaluate the effect of different organic waste on the Meloidogyne javanica population in the jiló cultivation. Seedlings of jiló with two pairs of leaves, cultivated in 1 L pot were inoculated with 5000 eggs of M. javanica and the following treatments were added to the substrate without inoculation: (a) Treatment 1 - waste incorporation; (b) Treatment 2 - 12.5 g L-1

chicken manure; (c) Treatment 3 - 25 g

L -1 bovine manure; (d) Treatment 4 - 20 g L-1

filter cake; (e) Treatment 5 - 5 g L-1 aerial

part of Tagetes patula (f) Treatment 6 - 6.25 g L-1

cabbage aerial part; (g) Treatment 7 -

20 mL L-1

vinasse; and (h) Treatment 8 – chemical-base Abamectin with 1 mL a.i. L1 . A completely randomized design with 6 replicates was used. Results showed that the treatments with the filter cake and bovine manure stood out in relation to the others, both in relation to the height of plants, fresh root mass, and number of eggs and J2 in 10 grams of roots. In the treatment with filter cake addition,there was a reduction of 52% in the amount of eggs relative to the control. It is concluded that under the experiment conditions, the use of bovine manure and filter cake is positive, both in the best development of the plants and in reducing the reproduction of M. Javanica in jiló cultivation.