Author(s):

Mahaveer Prasad Chula, Sharwan Lal Jat, Ashwani Kumarand and RS Nitharwal

Abstract: The results revealed that the population of fruit borer appeared on tomato fruit borer Helicoverpa armigera (Hub.) cultivar i.e. Selaction 22 was conducted during September. to March 2015 at Central Research Farm, SHIATS, Naini, Allahabad. The occurrence of tomato fruit borer commenced from 8^rd standard week (February third week) with an average population of 2.04% infestation. The tomato fruit borer, Helicoverpa armigera (Hub.) population increased and gradually reached its weak level of infestation 48.14% at 13^st standard weak (March second weak) there after declined trend was observed as temperature decreased. gradually till the crop was matured in last week of April. To know the effect of abiotic factors on the incidence of fruit borer on tomato, the correlation coefficient was worked out between mean fruit borer population and weather parameters. The maximum and minimum temperatures showed significantly positive correlation whereas, the relative humidity revealed negative significant correlation with fruit borer population, respectively. The rainfall showed significantly negative correlation with fruit borer population. The wind velocity and sunshine showed significantly positive correlation with fruit borer population on Tomato.

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