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Abstract
This study on the population dynamites of pod borer Helicoverpa armigera (Hubn.) on soybean revealed that it appeared from 29th Standard meteorological week (SMW) (0.40± 0.10 three leaves/ plant). It increased and reached its peak level of 2.67± 0.17/ 3 leaves/ plant during 33rd SMW. The declining trend was observed and reached 0.60± 0.13/ 3 leaves/ plant during 40th SMW. The peak infestation was 48% during 35th SMW. The incidence exhibited non-significant positive correlation with maximum (r= 0.227) and minimum temperature (r= 0.335) and evening relative humidity (RH) (r=0.315); and a significant positive one with morning RH (r= 0.599) and significant negative one with rainfall (r= -0.42). The sunshine was found to be negatively and non-significantly correlated (r = -0.069).
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References
- Bangale S A, Parmar G M, Dhandge S R. 2019. Seasonal incidence of soybean defoliators and their correlation with weather parameters in kharif season. Journal of Entomology and Zoology Studies 7(2): 1133-1136.
- Brahman S K, Sharma A K, Singh S. 2018. Studies on insect-pests of soybean (Glycine max) with special reference to seasonal incidence of lepidopteran defoliators. Journal of Pharmacognosy and Phytochemistry 7(1): 1808-1811.
- Mehto D N, Singh K M, Singh R N. 1985. Incidence of insect pest in chick pea Cicer arietinum Linn. Indian Journal of Entomology 47(2):117-136.
- Motaphale A A, Aglave B A, Bhosale B B. 2019. Major insect pests of soybean - studies on population dynamics. Advances in Plants and Agriculture Research 9(1): 50-52.
- Naseri B, Fathipour Y, Moharramipour S. and Hosseininaveh V. 2009. Comparative life history and fecundity of Helicoverpa armigera (Lepidoptera: Noctuidae) on different soybean varieties.
- Entomological Science 12: 147-154 Shivaraju C, Kumar C T, Kumar S S, Thippaiah M. 2011. Seasonal incidence of pod borer complex on black gram, Vigna mungo (L.). Journal of Entomological Research 35(1): 39-42.
- Zalucki M P, Murray D A H, Gregg P C, Fitt G P, Twine P H and Jones
- C. 1994. Ecology of Helicoverpa armigera (Hübner) and H. punctigera (Wallengren) in the inland of Australia: larval sampling
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References
Bangale S A, Parmar G M, Dhandge S R. 2019. Seasonal incidence of soybean defoliators and their correlation with weather parameters in kharif season. Journal of Entomology and Zoology Studies 7(2): 1133-1136.
Brahman S K, Sharma A K, Singh S. 2018. Studies on insect-pests of soybean (Glycine max) with special reference to seasonal incidence of lepidopteran defoliators. Journal of Pharmacognosy and Phytochemistry 7(1): 1808-1811.
Mehto D N, Singh K M, Singh R N. 1985. Incidence of insect pest in chick pea Cicer arietinum Linn. Indian Journal of Entomology 47(2):117-136.
Motaphale A A, Aglave B A, Bhosale B B. 2019. Major insect pests of soybean - studies on population dynamics. Advances in Plants and Agriculture Research 9(1): 50-52.
Naseri B, Fathipour Y, Moharramipour S. and Hosseininaveh V. 2009. Comparative life history and fecundity of Helicoverpa armigera (Lepidoptera: Noctuidae) on different soybean varieties.
Entomological Science 12: 147-154 Shivaraju C, Kumar C T, Kumar S S, Thippaiah M. 2011. Seasonal incidence of pod borer complex on black gram, Vigna mungo (L.). Journal of Entomological Research 35(1): 39-42.
Zalucki M P, Murray D A H, Gregg P C, Fitt G P, Twine P H and Jones
C. 1994. Ecology of Helicoverpa armigera (Hübner) and H. punctigera (Wallengren) in the inland of Australia: larval sampling
and host plant relationships during winter and spring. Australian Journal of Zoology 42: 329-346.