EFFECT OF CERTAIN MEDICINAL PLANTS NATURAL PRODUCTS ON Meloidogyne incognita MANAGEMENT IN VITRO

Under laboratory conditions, three aqueous seed extracts of Sinapis alba, Ammi visnaga and Lepidium sativum were tested against the root- knot nematode Meloidogyne incognita Exposure of juveniles and eggs to the tested plant water extract solutions for 72 hr , and 144hr separately reduced the number of active nematodes to J2 immobility and egg hatching as well. Among tested materials, Lepidium sativum seed extract surpassed other seed extracts treatment in diminishing values of J2 immobility and egg hatching by 94.6 and 5.3% at 72 hr of exposure as well as 63.5 and 1.4% at 144 hr of exposure, respectively. Moreover, treatments of Ammi visnaga and Sinapis alba seed extracts showed considerable percentage of reduction values of J2 immobility and egg hatching that averaged 36.4 48.5%; and 63.5 51.4%; and 60.7 69.9% ; and 39.3 29.9% at 72 and 144 hr of exposure time, respectively. Combination of plant seed extracts were the most effective in J2 mobility after 1 and 7 day comparing to control.