Journal of Biopesticides (2010) 3, 62-67

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K.S. Jagadish, M. Jayaramaiah and B. Shivayogeshwara (2010)
Bioefficacy of three promising predators on Myzus nicotianae Blackman (Homoptera : Aphididae)
Journal of Biopesticides 3 (1 Special Issue), 62-67
Abstract: Coccinella transversalis Fab., Cheilomenes sexmaculata (Fab.) and Chrysoperla carnea Stephens were evaluated for their bio-efficacy against the tobacco aphid, Myzus nicotianae Blackman under field conditions. Based on the results of a feeler trial under greenhouse conditions, the predators were tested at two dosages of release (i.e., 8 and 16 larvae/plant) and three schedules of release (i.e one release @5th weeks after planting (WAP), two releases @ at 5th and 7th WAP and three releases @ 5th, 7th and 9th WAP. The efficacy of the predators was measured in terms of the density of the aphid, both before and after the release of the predators, besides estimating the reduction in the density of the aphid at 6th, 8th and 10th WAP. Among the three predators evaluated, C. transversalis gave the significantly highest reduction in aphid density at 6th WAP (54.38%), 8th WAP (60.42%) and 10th WAP (59.96%), thus indicating that C.transversalis was relatively more superior then the other two predators in the suppression of the aphid population under field conditions.
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Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
inundative/inoculative release


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Myzus nicotianae Tobacco (Nicotiana tabacum) India
Chrysoperla carnea (predator) Myzus nicotianae Tobacco (Nicotiana tabacum) India
Coccinella transversalis (predator) Myzus nicotianae Tobacco (Nicotiana tabacum) India
Cheilomenes sexmaculata (predator) Myzus nicotianae Tobacco (Nicotiana tabacum) India