Farmers’ response to insect pests and diseases of potato in Myagdi district, Nepal

Abstract

The potato (Solanum tuberosum L.) is a member of the nightshade family and thrives across Nepal's diverse climate. However, potato production faces significant threats from various diseases and pests, leading to substantial yield loss. This study aimed to assess farmers' knowledge and perceptions of insect pests and diseases, and their practices for controlling outbreaks affecting potato production in Myagdi District, Nepal. A total of 90 farmers were randomly selected. Data were collected using primary and secondary methods and analyzed with SPSS and Excel. The results indicated that potato production in the district is profitable despite the presence of diseases and insect pests, with an undiscounted benefit-cost ratio of 1.79. The results showed that 80% of farmers could clearly identify insect pests, while 70% could visually detect diseases. Findings showed that the red ant (Dorylus orientalis) was the most significant pest, with an index value of 0.85. Furthermore, late blight (Phytophthora infestans) was identified as the most serious threat to potato crops, with an index score of 0.92. The survey found that 55.56% of farmers consider the MS.42.3 variety to be more susceptible to insect pests and diseases. The study revealed that 53.95% of respondents used physical or mechanical methods, 35.96% adopted biological practices, and 39.25% engaged in cultural methods. The results showed that only 11 farmers (14.5%) reported both knowledge of and adoption of chemical management practices. Implementing Integrated Pest/Disease Management (IPM/IDM) is a promising strategy to enhance the productivity and sustainability of potato farming in the Myagdi district.