Effect of phytoextracts on stem rot caused by Sclerotinia sclerotiorum (Lib.) de Bary on mustard (Brassica juncea L.)

Mustard (Brassica. juncea L.) is the most important oil seed crop among the major Rabi growing oil seeds of India. Stem rot disease of mustard is caused by cosmopolitan soil-borne hemibiotrophic fungus, is one of the utmost important disease of mustard, causing considerable losses in seed yield and deteriorates the oil quality.The general inadequacy of chemical fungicides to tackle stem rot in mustard has led to the search for ecofriendly management to this disease. Therefore, present study “Effect of phytoextracts on stem rot (Sclerotinia sclerotiorum Lib.) de Bary on mustard (Brassica. juncea L.)” was carried out during Rabi season in the year 2023-24 at Central Research field, Department of Plant Pathology, SHUATS, Prayagraj. Among the various phytoextracts tested against the stem rot of mustard under field conditions, revealed that disease incidence (%) at 60, 75 and 90 DAS was significantly decreased in treatment T3− garlic bulb extract (allium sativum) (16.66%), (22.20%) and (25.92%), followed by neem leaf extract (19.40%), (24.06%) and (29.62%). The number of sclerotia per stem at harvest was significantly decreased in T3− garlic bulb extract (allium sativum) (3.60), followed by neem leaf extract (5.60). The yield (q/ha) was significantly increased in T3 - garlic bulb extract (allium sativum) (13.04 q/ha), followed by neem leaf extract (12.42 q/ha) respectively as compared to control T0.