Bioactivity of commercial products of Bacillus thuringiensis on Meloidogyne incognita infecting tomato

Some commercial products of Bacillus thuringiensis (Delfin, Dipel 2X, Ecotech Bio, Turex and Xentari) were tested as biocontrol agents against Meloidogyne incognita on tomato plants. All the commercial products tested exhibited significant improvement on all the growth parameters of the plants as well as nematode suppression. Turex and Dipel 2X were found to be highly effective against M. incognita. However, response of these two bacterial products was found significantly equal to that of carbofuran. On the other hand, the lowest nematode suppression was noted in plants treated with Xentari and Ecotech Bio. These bacterial products showed promising nematicidal activity and offered possibilities as non-chemical alternatives in the control of M. incognita.