Efficacy test of micro emulsion formulation of Lecanicillium lecanii (= Verticillium lecanii) (Zimm.) Zare & W. Gams against four species of mealy bugs by laboratory bioassay

Abstract

Chickpea (Cicer arietinum L) is one of the important rabi pulse crop grown in Vindhyan Plateau Zone of Madhya Pradesh. The productivity of chickpea is lowered due to high incidence of wilt in Madhya Pradesh. Fusarium oxysporum f. sp. ciceri is one of the most destructive pathogen, causing wilt disease in chickpea and thereby inflicting accountable quantitative as well as qualitative losses. The survey studies indicated that, overall wilt incidence was comparatively higher in rabi (2018-2019) grown chickpea crop, as compared to that of rabi (2019- 2020) grown crop. In all the six districts of vindhyan pateau zone surveyed, the disease was found to be widely distributed and regular occurrence with moderate to severe incidence and it’s average incidence was found maximum in the district of Sehore (17.87%) followed by Rajgarh (17.00%) and Bhopal (15.20%) districts in the years 2018-2019 and 2019-2020. The average incidence of wilt disease was found more in 2018-2019 (15.63%) as compared to 2019- 2020 (14.99%). Present study showed that chickpea wilt is highly distributed in all the surveyed areas of Vindhyan Pateau zone of Madhya Pradesh. Variety wise incidence were recorded in Vindhyan Pateau zone where the average mean incidence was more on local cultivar (21.50% and 20.75%) without any proven resistance were found to suffer severely with the disease, during both the years. The most popularly grown WR 315 was found to suffer more with about 17.50 and 16.75 per cent (wilt) disease incidence during rabi (2018-2019) and rabi (2019-2020), respectively. However, the cultivars viz., JG 74, JG 218, JG 130 and JG 63 were found to suffer comparatively minimum with the wilt disease.