Development of Alternaria blight in genotypes of Indian mustard (Brassica juncea (L.) Czern. & Coss.) under field conditions
2006
and S.J. KOLTE, BRAJESH KUMAR
Development of Alternaria blight in relation to disease resistance components was assessed in nine genotypes of Indian mustard (Brassica juncea) under natural field conditions. Two genotypes viz., PR 8988 and PR 9024 exhibited slow blighting and had lowest number of spots /10 cm2 leaf area, reduced spot size, least number of conidia per spot and lowest disease index on leaf and pod. The maximum disease development was recorded during 62 to 72 DAS on leaves and from 100 to 110 DAS on pods.
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