Department of Nematology, Tamil Nadu Agricultural University, Coimbatore - 641 003.
Part of thesis, submitted by the senior author, for the degree of M.Sc(Ag) to, Tamilnadu Agricultural University.
Investigations were carried out on the root-rot disease complex induced by the pigeonpea cyst nematode, Heterodera cajani and the root-rot fungus Macrophomina phaseolina to know their interaction effects of H. cajani a week prior to the inoculation of M. phaseolina caused highest root-rot incidence and significant reduction in plant growth and yield. Nematode multiplication was adversely affected when fungus inoculation was preceded by nematode inoculation. Pathogenicity studies of nematode and fungus revealed highest root-rot incidence and lowest pod yield at highest inoculum levels of nematode and fungus.
Heterodera cajani, Macrophomina phaseolina, interaction, pathogenicity, Vigna radiata
