Micronutrient and Trichoderma harzianum Enriched Organic Manure for the Management of White Mold of French Bean caused by Sclerotinia sclerotiorum

摘要

White mold of French bean caused by Sclerotinia sclerotiorum (Lib.) de Bary is a major constraint in the profitable cultivation of French bean. Antagonist like Trichoderma harzianum Rifai has been widely explored as an eco-fnendly option for controlling soil borne pathogens of plants. To enhance the efficiency of T. harzianum, the effect of Zn (0.5% and 0.25%) was tested. Zn @ 0.5% showed higher growth of T. harzianum which was also inhibitory to S. sclerotiorum. In a field experiment, soil application (w/w) of vermicompost enriched T. harzianum and Zn @ lOqha~(-1)was found effective in reducing the white mold by 66.7% and increased dry weight, length of roots (8.63 cm) and shoots (9.75 cm) and pod yield (62.50 q ha~(-1)) as compared to control.