Pantnagar Journal of Research

Abstract

The study investigates the spatial and temporal dynamics of sheath blight, a significant production constraint in rice cultivation, in Udham Singh Nagar, Uttarakhand, India. Data from 19 sampling sites across 8 tehsils were collected during the Kharif seasons of 2022 and 2023. Disease incidence was calculated, and a Tukey test was performed to analyze differences between areas. Geostatistical techniques, including Inverse Distance Weighting (IDW) interpolation, were used to map disease distribution. Results indicate significant differences in disease incidence between areas, with some areas consistently showing higher or lower incidence rates. Notably, the tehsils of Kashipur and Rudrapur exhibited the highest incidence rates, while Kichha and Sitarganj showed the lowest. The study highlights the importance of spatial analysis in understanding disease dynamics.