Abstract
Groundnut (Arachis hypogaea L.) is the major oil seed legume crop in the world. The production and productivity of groundnut is highly affected by collar rot, early leaf spot, Late leaf spot, rust and stem rot diseases. Among the foliar fungal diseases, early leaf spot (ELS) caused by Cercospora arachidicola Hori is one of the most destructive disease in Rajasthan. The early leaf spot infected leaves of groundnut was found to produce typical symptoms, such as presence of light brown to black circular to irregular lesions with chlorotic hallow on the upper surface of the leaves. A proper investigation needs a perfect scrutiny. So, the survey was carried out during Kharif-2019 in the three major groundnut growing tehsils (Nokha, Lunkaransar and Shri Dungargarh) of Bikaner district revealed that none of the locations were free from the disease. However, maximum disease intensity of early leaf spot was observed in Shri Dungargarh tehsil (25.87%) followed by Lunkaransar tehsil (19.32%) at the crop age 45-60 days after sowing.
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