Effect of spore suspension of pathogen causing diseases on dodder (Cuscuta gronovii) parasitized on green gram

Abstract

Pulses are cultivated in Konkan region during Rabi season after harvest of Kharif rice, the major threat on this pulses is plant parasite. Cuscuta causes a serious problem in pulses. In view to management of such serious plant parasite, we used different pathogenic suspension viz. Fusarium incarnatum, Alternaria dianthicola and Curvularia pallescens at diverse concentration. Cuscuta gronovii parasitized on green gram host plants were inoculated with different concentration of spore suspension of previous obtained pathogens. The maximum disease severity on C. gronovii were recorded by A. dianthicola @ 2 x 105 and F. incarnatum @ 2 x 105 concentrations parasitizing on green gram and the host plant reaction was found to be immune. At 21 DAI, A. dianthicola @ 2×105 and F. incarnatum @ 2×105 showed maximum disease severity 86.33% and 84.00% respectively. These concentrations of spore suspension of pathogens were act as a mycoherbicide or bioherbicide and applicable to control Cuscuta parasitized on green gram plants effectively.