Impact of Weather Parameters on Population Dynamics of Litchi Leaf Roller, Dudua aprobola (Meyrick, 1886) on Litchi in Eastern Plateau and Hill Region of India
Neena Bharti, Jaipal Singh Choudhary, Usha Yadav
International Journal of Plant & Soil Science · pp. 143–148 · Published 11 Apr 2025
10.9734/ijpss/2025/v37i45395Abstract
The influence of weather factors on the population dynamics of the litchi leaf roller, Dudua (=Platypeplus) aprobola, was studied at ICAR RCER, Farming System Research Centre for Hill and Plateau Region (ICAR RCER, FSRCHPR), Ranchi during the years 2023- 2024. The relationship between temperature, rainfall, and leaf rollers was established. The population pattern of leaf rollers was observed more or less the same in both years. The highest incidence of the leaf roller occurred during the 40th and 41st standard meteorological weeks (SMW) in both years (1.6 to 2.5 rolled leaves per shoot). The correlation analysis between leaf roller and weather parameters showed a significant positive correlation with minimum temperature (p<0.01) and a negative with rainfall (p<0.05). The linear regression model is based on weather parameters as an independent variable and leaf roller population as dependent variables explained by 55 to 66 percent leaf roller population variability. Environmental factors played a determining factor in leaf roller population dynamics.
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