Evaluation of Selected Plant Extracts and Carbendazim against Stem Rot of Mustard (Brassica juncea L.) Caused by Sclerotinia sclerotiorum (Lib.) De Bary
Parveen Kumar *
Department of Plant Pathology, Naini, Agricultural Institute, Sam Higginbottom University of Agriculture, Technology And Sciences, Prayagraj -211007, India.
Abhilasha A. Lal
Department of Plant Pathology, Naini, Agricultural Institute, Sam Higginbottom University of Agriculture, Technology And Sciences, Prayagraj -211007, India.
*Author to whom correspondence should be addressed.
Abstract
Sclerotinia stem rot disease caused by Sclerotinia sclerotiorum (Lib.) de Bary is a serious problem of mustard. The effect of five plant extracts using neem, garlic, eucalyptus, datura, and calotropis were tested against S. sclerotiorum. Maximum inhibition (%) of mycelial growth of Sclerotinia sclerotiorum was recorded in garlic bulb extract at 10%, followed by calotropis extract after 96 hours of inoculation. In a field experiment during rabi season 2023-24, seed treatment with carbendazim 2g/kg and foliar sprays of garlic bulb extract at 10% was most effective and recorded the lowest disease incidence (20.08%) of sclerotinia stem rot of mustard (Brassica juncea L.), maximum production (13.26 q/ha) and maximum cost-benefit ratio (1:1.87).
Keywords: Botanicals, carbendazim, mycelial growth, Sclerotinia sclerotiorum, stem rot