Evaluation of qualification the fungus Paecilomyces lilacinus to control disease Root-not Nematode in Tomato that caused by Meloidogyne javanica

Abstract

This study aimed to determine the best active formula of many preparations of biocontrol factor (Paecilomyces lilacinus) fungus used in soil treatment ,and study the effect of different-store environments(room temperature, refrigerator and freezing) in its biological activity(for two years). The results showed that the addition of active material of biocontrol factor ( spores and mycelium ) on mixture consistent of pollen fungi + Corn cob cracked +Wheat bran(1:2.5:0.5) was of high efficiency in keeping high activity under field environments .This preparation caused a significant decrease in Tomato Root-knot disease caused by Meloidogyne javanica nematode and a significant increase in the average of plants growth in green house and field experiments. Furthermore storage under Freezing environments was damaging in the activity of biocontrol factor, and the storage under room temperature or refrigeration was less damaging especially during the first six months of storing processes .