Pharmacognosy

Journal of Pharmacognosy and Phytochemistry

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Journal of Pharmacognosy and Phytochemistry

Vol. 6, Special Issue 1 (2017)

Effect of abiotic and biotic factors on population of tomato fruit borer (Helicoverpa Armigera) on tomato

Author(s): Rohit Bhati, Rajendra Singh, Gaje Singh and DV Singh
Abstract: 5 species of insects were observed to be associated with various stages of the tomato crop. The first major group of insects to attack in the vegetative stage was Jassid, aphid, serpentine leaf miner and whitefly and was available till maturity of the crop. The second group of insect which included only one insect i.e. tomato fruit borer was the most important and pre dominant pest. Jassid was present on the crop during the entire cropping season and remained available up to the crop maturity stage. Aphid was present on the crop almost during the entire cropping season and remained available up to crop maturity stage. Leaf miner was present on the crop during the entire cropping season and remained available up to the crop maturity stage. Whitefly was present on the crop during the fruiting stage and remained available up to crop maturity stage. Lady bird beetle was present on the crop from the reproductive stage. The fruit borer larva was first observed during the 2nd SW and reached at its peak (1.4 larvae / plant) during 4th SW. During this period the maximum and minimum temperature were 21.5 and 90 0C, respectively, whereas morning and evening relative humidity were 89 and 57 per cent, respectively. Further sunshine, wind speed, morning and evening vapour pressure and evaporation were 6.8 hrs, 3.5 km / hr, 8.7 mm, 10.2 mm and 1.9 mm, respectively. After 10th SW, there was a gradual decline in the larval population and was available up to 16th SW.
Pages: 485-489  |  555 Views  10 Downloads
How to cite this article:
Rohit Bhati, Rajendra Singh, Gaje Singh and DV Singh. Effect of abiotic and biotic factors on population of tomato fruit borer (Helicoverpa Armigera) on tomato. 2017; 6(6S): 485-489.
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