Managing phosphine resistance in Indian grain storage: Challenges and strategies

Abstract

India's agricultural sector faces significant challenges in preserving harvested grains due to biotic stresses during storage, with stored insects posing a substantial threat to stored produce. Among the various pest control methods, phosphine fumigation has been pivotal due to its efficacy and cost effectiveness. However, the emergence of phosphine resistance in stored insects presents a serious
concern. This article explores phosphine resistance within the Indian context, encompassing its mechanisms, prevalence, impacts, and management strategies. It discusses the genetic, physiological, and behavioural factors contributing to resistance, as well as its prevalence among major stored insect pests in India. A case study on phosphine susceptibility in Tribolium castaneum highlights the complexity of resistance mechanisms. The article underscores the economic and food security implications of phosphine resistance and proposes integrated pest management strategies for its management and mitigation. By adopting proactive measures, India can address phosphine resistance and safeguard its agricultural sector's sustainability.