Abstract
Seasonal Incidence of tobacco caterpillar infesting groundnut (A. hypogaea)” was studied during July to October 2014, at Reasearch farm, College of Technology and Engineering, Udaipur. The study revealed that the incidence of tobacco caterpillar (0.20 caterpillar/plant) appeared in 2nd week of September (37th Standard Meteorological Week). The population of tobacco caterpillar, S. litura slowly increased and reached to its peak in the 2nd week of October (41st SMW) with a mean of 1.40 caterpillar/ plant, when the mean atmosphere temperature and relative humidity were 26.25 °C and 56.50 per cent, respectively. Thereafter, the population declined gradually and reached to a minimum level of 0.40/plant during 4th week of October (43rd SMW). The tobacco caterpillar exhibited a negative and significant correlation with relative humidity and total rainfall, while with temperature negatively non-significant.
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