Effect of Some Nematicides on Hatching Eggs and Viability of Second Stage Juveniles of Root-Knot Nematode, Meloidogyne Incognita Under Laboratory Conditions

Abstract

This study was conducted to evaluate the efficacy of three nematicides, Blue Guard, Garland garlic extract, Nema-kill at two concentrations of 50 and 100ppm in inhibiting egg hatching and killing second stage juveniles of root-knot nematode, M. incognita under laboratory conditions. The results showed the effectiveness of nematicides in inhibiting eggs and killing juveniles with significant differences compared with control treatments. Garland garlic extract 100ppm achieved the highest inhibition rate of 94.4% compared with nematicides, blue guard 100ppm and Nema-kill 100ppm, which amounted to 65.6 and 60.2%, respectively, after 7 days compared with control treatment 4.2%. The results also showed significant differences in the killing of juveniles by the superiority of the Garland garlic extract 100 ppm, which achieved the highest killing rate of juveniles that reached 88.4% compared with treatments of the pesticide, blue guard 100 ppm and Nema-kill 100 ppm, which amounted to 59.2 and 58%, respectively, after 4 days.