Department ot Nematology, Tamil Nadu Agricultural University, Combatore-641 003.
*Part of the thesis submitted by the Senior Author for the award of MSc. (Ag.) degree of Tamil Nadu Agricultural University, Coimbatore.
The effect of leaf extracts of Calotropis procera (CP), Tagetes erecta (TE), Catharanthus rosea (CR), and Bougainvillea spectabilis (BS) and nematicides carbofuran 3G and phorate 10G on Glomus fasciculatum (GF) and Meloidogyne incognita (MI), infecting blackgram (Vigna mungo cv Co5) was investigated under pot culture studies. In general, there was significant increase in all the growth parameters due to the addition of leaf extracts compared to the VAM and nematode combination. VAM effect was significantly superior to other treatments. The chemical treatment along with VAM and nematode produced significantly lesser biomass conqxired to leaf extracts, and VAM + nematode treatments. Leaf extracts recorded higher spore population and mycorrhizal colonization than chemicals. The chemical treatments recorded less gall index and nematode population than leaf extracts.
Leaf extracts, nematicides, Glomus faciculatum, Meloidogye incognita interaction, Vigna mungo
