Effect of fenvalerate, triazophos and FMC 54800 on penetration and reproduction of Meloidogyne incognita

Three chemicals Triazophos, Fenvalerate and FMC 54800 were evaluated for their effect on the penetration and reproduction of 2nd stage juveniles (J2) of Meloidogyne incognita on cowpea (Vigna unguiculata). The chemicals adversely affected the penetration of 52 into the roots of cowpea seedlings when either the larvae or egg masses were chemically treated. Triazophos showed least penetration followed by FMC 54800 and Fenvalerate. Apart from reduced penetration further development of host galls and egg masses was also considerably less in the Triazophos treated 52 as compared to the check and the other chemicals tested.