Survey and Prevalence of Stem Rot of Cluster Bean (Cyamopsis tetragonoloba L.) Incited by Sclerotium rolfsii in Major Growing Districts of Northern M.P., India
Neelam Soni *
Department of Plant Pathology, College of Agriculture, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, MP-474002, India.
Rajni Singh Sasode
Department of Plant Pathology, College of Agriculture, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, MP-474002, India.
Anita Kumari Pandey
Department of Plant Pathology, College of Agriculture, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, MP-474002, India.
Yogesh Kumar
Department of Plant Pathology, College of Agriculture, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, MP-474002, India.
Shweta Choubey
Department of Plant Pathology, College of Agriculture, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, MP-474002, India.
Jaydeep
Department of Plant Pathology, College of Agriculture, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, MP-474002, India.
*Author to whom correspondence should be addressed.
Abstract
Stem rot of cluster bean caused by Sclerotium rolfsii Sacc., is a soil-borne disease that leads to significant crop damage and yield loss. In 2023, a survey was conducted across 100 fields in 20 villages within three districts of northern Madhya Pradesh. The findings revealed that stem rot caused by Sclerotium rolfsii, is a prominent pathological issue with its presence confirmed in all surveyed districts. A roving survey was carried out in Gwalior, Morena and Shivpuri districts to evaluate the severity of the disease. Average disease incidence of stem rot varied from 1.33 % to 25.33 % on all the cultivars grown by the farmers. In Gwalior district, the highest incidence of stem rot (25.33%) was recorded in Panihar village while the lowest incidence (2.67%) occurred in Patai village. In Morena district, Mitawali village reported the highest disease incidence of 18.67% whereas Joura village showed the lowest of 1.33%. In Shivpuri district, disease incidence varied from 2.67% in Karsena village to 20.00% in Karyawati village. Disease sample was also be collected and brought to the laboratory for isolation.
Keywords: Cluster bean, stem rot, Sclerotium rolfsii, survey, prevalence, percent disease incidence