Vol. 6, Issue 4 (2017)
Seasonal incidence of tomato fruit borer, Helicoverpa armigera (Hubner) and their correlation with abiotic factors
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 8rd 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 13st 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.
How to cite this article:
Mahaveer Prasad Chula, Sharwan Lal Jat, Ashwani Kumarand, RS Nitharwal. Seasonal incidence of tomato fruit borer, Helicoverpa armigera (Hubner) and their correlation with abiotic factors . J Pharmacogn Phytochem 2017;6(4):1445-1447.