Tikendra Kumar*, R.K. Dantre and K.P. Verma
Department of Plant Pathology, Indira Gandhi Agricultural University,
Raipur 492006, Chhattisgarh, India.
Email: tikendrasahu4481@gmail.com
Received-14.03.2016, Revised-23.03.2016
Abstrct: Soybean aerial blight caused by Rhizoctonia solani is a most important oilseed disease. This disease is destructive and causes heavy losses in the yield particularly in warn and humid parts of the countries. The use of resistant varieties is the cheapest, easiest, safest and most effective method to manage the aerial blight disease. Forty-two entries screened for resistant to aerial blight of soybean, 2 entries (SL 752 and RKS 48) were found absolutely resistant and 6 entries were highly resistant. Soybean crop sown at 29th July showed least disease severity (11.04%) in comparison to 21st June, 9th July and 19th July sowing. Losses assessment study revealed that maximum percent reduction in seed weight, plant height, pods and branches were recorded in 9 score plants (more than 50% leaf area infected) i.e.,55.55%, 40.90%, 71.42%, and 72% respectively. Maximum aerial blight intensity was recorded in the crop sown in flooded field.
Keywords: Aerial blight of soybean, Rhizoctonia solani, Screening of soybean varieties, Web blight
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