Investigation of insecticidal activity of some α,β-unsaturated carbonyl compounds and their synergistic combination with natural products against Phenacoccus solenopsis Tinsley
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Department of Applied Chemistry, Delhi Technological University (Formerly Delhi Collegeof Engineering), Bawana Road, Delhi-110042, India
Biological Control Laboratory, Divisionof Entomology, Indian Agricultural Research Institute, New Delhi-110012, India
Corresponding author
Archna Rani
Department of Applied Chemistry, Delhi Technological University (Formerly Delhi Collegeof Engineering), Bawana Road, Delhi-110042, India
Journal of Plant Protection Research 2012;52(1):146-155
In continuation of our previous work, the current study explores an environmentally benign approach for the control of Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) using a synergistic combination of α,β-unsaturated carbonyl compounds (1a-1e; 2a-2i) and the natural products, neem oil (N1) and nicotinic acid (N2). Our approach also evaluates the insecticidal activity of 3-(5-chloro-1,3-diaryl-1H-pyrazol-4-yl)-1-arylprop-2-en-1-one(2j-2o) consisting of bioactive moieties, viz., chalcone and pyrazole, in a single molecular structure. Compounds 2l and 2o exhibited maximum activity with 58% and 50 % of mortality, respectively, under laboratory conditions. Among various test combinations, 2a-N2 showed maximum insecticidal activity, with 54% mortality, compa- rable to that of the most active newly synthesized compound, 2l, followed by 1c-N1 and 2g-N2 with 52% mortality. The compound 2a was also found to be non-toxic to potato tuber used as a plant substrate in the current investigation.
The authors have declared that no conflict of interests exist.
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