Bioherbicidal potential of Rumex crispus infected with Didymella rumicicola

A new foliar disease was observed on a perennial weed Rumex crispus which grows extensively in orchards, pastures, hay crops, lawns and home gardens Kashmir valley. Repeated Isolation of the pathogen from infected leaves yielded fungus basis Cultural morphological characteristics showed resemblance to Didymella sp. Pathogenicity confirmed by detached leaf technique as well inoculating whole plants pots. Precise confirmation identity done sequencing reference genes using ITS1 ITS4 markers sequenced data subjected BLAST 99.80 per cent similarity with rumicicola previously only reported New Zealand obtusifolius prior this study. Host range, bioherbicidal potential hosts five different families cultivated crops along plants, revealed that no incidence found host plant species other whereas,100% 80% severity were at 15 25 days after inoculation respectively. Physiological studies newly isolated best radial growth Potato dextrose agar pH 6.5 temperature 25oC.