Department of Nematology, Tamil Nadu Agricultural University, Coimbatore-641 003.
*Present Address: Project Directorate of Biological Control, P.B. No. 2491, H.A. Farm Post, Bangalore, 560 024, India.
†A part of Ph.D. thesis submitted by the senior author to Tamil Nadu Agricultural University, Coimbatore 641 003. India.
A pot culture experiment was conducted to study the effect of different phosphatic fertilizers viz., superphosphate, dicalcium phosphate and rock phosphate on the interaction of vesicular-arbuscular mycorrhiza (Glomus mosseae) and root-knot nematode (Meloidogyne incognita) on blackgram. The plants treated with phosphatic fertilizers showed significant growth parameters which were on par with those treated with mycorrhiza. Application of phosphatic fertilizers, combined with mycorrhiza, resulted in lesser growth when compared to individual inoculation. The combination of super phosphate, VAM and the nematode recorded higher plant growth, minimum nematode population, higher VAM spore population, colonization and plant phosphorus content than the other two phosphatic forms.
Phosphatic fertilizers, Glomus mosseae, Meloidogyne incognita, interaction, Vigna mungo
