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Journal of Entomology and Zoology Studies
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ISSN Print: 2349-6800 | ISSN Online: 2320-7078

Journal of Entomology and Zoology Studies

2017, Vol. 5, Issue 2
Effect of abiotic factors on the seasonal incidence of fruit borer, Helicoverpa armigera (Hub.) on tomato with and without marigold as a trap crop

Vijay Kumar, MK Mahla, Jhumar Lal and Beerendra Singh

Field experiment was conducted to study the seasonal incidence of tomato fruit borer, H. armigera (Hub.) on tomato with and without marigold as a trap crop. The incidence of H. armigera on tomato without marigold as a trap crop was first noticed in the first week of February. The pest touched the peak with a mean of 4.40 larvae / plants during third week of March. Similarly, the incidence of H. armigera on tomato with marigold as a trap crop was first noticed in the fourth week of January. The pest touched the peak with a mean of 1.20 larvae/plant during third week of March. The correlation between fruit borer population and mean atmospheric temperature was positive and significant in with and without marigold (r= 0.633 and 0.677, respectively). The significantly positive correlation were found between H. armigera larvae and damaged fruits in tomato with and without marigold (r = 0.878 and 0.929, respectively).
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How to cite this article:
Vijay Kumar, MK Mahla, Jhumar Lal, Beerendra Singh. Effect of abiotic factors on the seasonal incidence of fruit borer, Helicoverpa armigera (Hub.) on tomato with and without marigold as a trap crop. J Entomol Zool Stud 2017;5(2):803-807.
Journal of Entomology and Zoology Studies
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