Nematofauna associada ao substrato sob efeito da biofumigaçao.

Abstract

Organic matter incorporation associated with solarization has been presented as a quite promising progress, because, several pathogenic controls are not functioning for solarization, when used separately, it has been reducing time control drastically. This technique, also, has been providing a significant increase in some microorganisms' community present in the soir. Therefore, the objective of this study was to identify and to quantify the nematofauna associated to the substratum under biofumigation effect (organic matter incorporation associated with solarization) cultivated with watermelon. The experiment was carried out in soil that presented Me/oldogyne mayaguens/s historicall originate from the Granja Acarape, located in the municipal district of Pombas - PB. The treatments were: Substratum solarizedl Substratum solarized + manipueira 100%l Substratum solarized + manipueira 50%l Substratum solarized + manipueira 25%l Substratum solarized + manipueira 10%l Substratum with manipueira 100%l Substratum with manipueira 50%l Substratum with manipueira 25%l Substratum with manipueira 10% and Substratum no solarization. The design was completely randomized, with ten treatments and ave repetitions. 50 transparent plastic bags were used, and, 25 bags containing substratum (3 Kg) with your owed manipueira quantity were maintained in the sun (solarization) and 25 were maintained to shadow, for a period of 10 days. The evaluations were accomplished to 60 days after the watermelon planting, through count of root-knot present or absent in the plants and nematodes number present in the substratum samples contained in the vases. So much, as solarization with manipueira incorporation as manipueira incorporation, separately, controlled Me/ofdogyne sp. population in substratum. Solarization, separately, did not control Me/oidogyne sp. population in substratum and solarization, separately, or associated with manipueira incorporation increased Rhabd/f/s sp. population in substratum.