Sheath Blight of Rice: A Review of Host Pathogen Interaction, Management Strategies and Future Prospects

Abstract

This review article delves into the impact, epidemiology, and management of sheath blight disease in rice, caused by Rhizoctonia solani, which is a pernicious pathogen causing severe quality and production losses globally. Rice is a staple crop for almost two-thirds of the world’s population, and sheath blight disease significantly affects rice cultivation in many countries, causing substantial annual losses in grain yield. The article provides comprehensive insight into the biology of the pathogen, including its host range, symptoms, disease cycle, and factors influencing its severity. In particular, the pathogen’s virulence factors and the underlying mechanisms of its pathogenesis are explored in detail. The review also highlights the significant economic implications of sheath blight disease in rice and the consequent impact on food security and the livelihoods of farmers. Various management strategies, including chemical, cultural, and biological control measures, are discussed in this manuscript. These strategies offer potential solutions to mitigate the devastating effects of sheath blight disease on rice crops. In particular, the review emphasizes the importance of integrated pest management strategies that combine multiple control measures, including the use of resistant cultivars, fungicides, and cultural practices, to achieve long-term sustainable management of the disease. The manuscript concludes with recommendations for farmers, researchers, and policymakers working in agriculture sector to combat the disease’s threat and reduce crop losses. The findings of this review article can serve as a valuable resource for stakeholders in the rice production industry to enhance their understanding of sheath blight disease and develop effective management strategies to protect the rice crop's health and yield.