+ Research Paper | Chemical management of marssonina leaf blotch and alternaria leaf spot diseases of apple in Himachal Pradesh letsgrowapple, June 21, 2020June 21, 2020, #tags, APPLE-PEST, FUNGUS-PEST, Alternaria, marssonina Research Paper | Chemical management of marssonina leaf blotch and alternaria leaf spot diseases of apple in Himachal Pradesh...