Ecology, Environment and Conservation Paper

SENSITIVITY OF ALTEMARIA ARACHIDIS KUL TO CARBENDAZIM CAUSING ALTERNARIA BLIGHT OF GROUNDNUT.

D.C. Kamthane and S.M. Kareppa

Abstract

Among oil seed crops, groundnut (Arachis hypogea L) is an important crop.The underground as well as the foliar parts get affected by different micro-organisms causing various diseases.Along with earlier known foliar diseases, a new disease "Alternaria Blight" has been observed in field.The alternaria blight infected leaves show marginal necrosis and increases inward to form wedge shaped lesions.The lesions get surrounded by yellow zone.The disease is increasing gradually year after the year.Therefore, its study is essential.Aiternaria arachidis Kul. causing alternaria blight was isolated and purified. The pathogenicity was proved by SDL technique. DSI was increasing year after the year indicating that the disease occurrence is increasing and it needs control measures.The sensitivity of Alternaric arachidis Kull. to carbendazin was studied by food poisoning technique. It was noted that as concentration increased, the linear growth decreased.The MIC was found to be 1200 pg/ml.