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- Title
NATURAL ENEMIES ASSOCIATED WITH INSECT PESTS OF MAIZE IN SUB-TROPICAL AND SUB-HUMID ZONES OF HIMACHAL PRADESH, INDIA.
- Authors
Ankita; Sharma, P. K.; Mehta, Vasu
- Abstract
Maize is one of the important cereal crops in the north western Himalayan region of India. The present investigation was carried out to briefly compile the natural enemies associated with maize insect pests in Zone-I (sub-tropical low hills) and Zone-II (sub-humid mid-hills) of Himachal Pradesh, India. A total of 11 natural enemies were found to be associated with maize insect pests during different stages of crop growth viz., coccinellids (adults and grubs), larvae of syrphids and lacewings, parasitoid wasps, i.e., Anastatus sp., Cotesia ruficrus and Dinocampus sp. The maximum population of coccinellid adults and grubs was recorded at Bhareri i.e., 10.25 adult beetles per 30 plants and 8.25 grubs per 30 plants during September in Zone-I. In Zone-II, the maximum population of coccinellid adults (12.00 beetles / 30 plants) and grubs (10.75 grubs/30 plants) was recorded at Chamba during the maturity stage of the crop. At Palampur, the population of predators was maximum when the population of its host i.e., aphids was maximum and the activity of parasitoids (Diaeretiella sp.) was observed to be maximum in the fourth week of September . This study will boost up farmer's and researcher's knowledge about the status of natural enemy fauna associated with maize pests at major maize cultivating locations in the state and moreover, it will encourage farmers to go for any of the available biocontrol agents, rather than relying on harmful and synthetic chemicals.
- Subjects
HIMACHAL Pradesh (India); INDIA; HIMALAYA Mountains; INSECT pests; BIOLOGICAL pest control; CORN; ENEMIES; BIOLOGICAL pest control agents; CROP growth
- Publication
Journal of Experimental Zoology India, 2021, Vol 24, Issue 1, p329
- ISSN
0972-0030
- Publication type
Article