Abstract
The infestation of Leucinodes orbonalis started appearing in shoots during June month. Fruit infestation started appearing in July month, but the peak incidence of shoot and fruit borer was observed in third week of September. Highest shoot damage (48.7%), fruit damage (40.0%) on number basis and maximum larval population (12 larvae/20 plants) was recorded in third week of September, when temperature (max.) was 35.3°C and (min.) 25.0°C, relative humidity morning 87% and evening 45%. Incidence of L.orbonalis started declining afterwards in shoots as well as in fruits. Further, correlation analysis showed non significant relationship of abiotic factors with % shoot damage, fruit damage and mean larval population. Whereas, regression analysis showed 68% variation in the population due to abiotic factors.
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