Efficacy of bio agents and fungicides against Colletotrichum blight of large cardamom (Amomum subulatum Roxb.) under field condition in Sankhuwasabha District, Nepal

The field experiment was carried out in five years old Golsai variety of large cardamom (Amomum subulatum Roxb.) at Khandbari-4, Pangma Sankhuwasabha district between February and April 2022 to evaluate the efficacy bioagents fungicides against Colletotrichum blight (A. subulatum). Two bioagents, three fungicides, control/water were taken as treatments, established a Randomized Complete Block Design (RCBD) with an area 4×3 sqm each experimental unit having 6 treatments 4 replications. Treatment wise application given by using high-volume knapsack sprayer required concentration. Subsequent sprays seven-day intervals. result study showed that among tested TOPCARE (Azoxystrobin 50% WDG) bioagent Trichoderma viride significantly reduced under conditions. So, spraying fungicide T. will be best for controlling on district.