Assessment of yield losses in dolichos bean due to anthracnose caused by Colletotrichum lindemuthianum

Abstract

An investigation on yield loss assessment in dolichos bean due to anthracnose (Colletotrichum lindemuthianum) was conducted under field conditions using different spray schedules of thiophanate methyl (0.1%). Field experiments revealed maximum disease severity and low yields in control plots. The disease drastically affected yield causing significant reduction in yield. Three sprays of recommended fungicide, thiopahante methyl, at 10 days interval starting from 45 days after sowing recorded in lowest per cent disease index (PDI) and area under disease progress curve (AUPDC), which resulted in highest green pod yield and cost benefit ratio.. Highest avoidable losses of green pod yield due to the anthracnose infection were noticed in two sprays. The results indicated that three sprays of thiophanate methyl (0.1%) resulted in minimum disease severity and maximum profit.