In vitro evaluation of phytoextracts and screening of different cultivars of pigeon pea against collar and root rot disease caused by Sclerotium rolfsii Sacc.

Abstract

In the view of ecological management of different diseases of crops, in present era the use of chemical fungicides have been hazardous to plants, animals as well as human being also. In case of this, to avoid such a condition there were six different phytoextracts used in present investigation viz., Sapendus tripholiarus, Allium sativum, Curcuma longa, Zingiber officinale, Callophyllum inophyllum and Ocimum sanctum. Among above mentioned phytoextracts only Sapendus tripholiarus extract at 10 per cent concentration was most effective in inhibiting the mycelial growth and sclerotia formation. The in vitro screening of some cultivars of pigeon pea against Sclerotium rolfsii Sacc. revealed that among the varieties tested five varieties viz., BDN-711, TAT-10, ICPL-87119, T-Vishakha and UPAS-120 was found disease free from S. rolfsii up to 21 days.