Toxic and repellent potentials of different plant oils and new chemistry insecticides against Tribolium castaneum
DOI:
https://doi.org/10.30574/gscbps.2020.11.2.0081Keywords:
Eruca sativa, Azadirachta indica, Ricinus communis, T. castaneumAbstract
Stored grains commodities are attacked by a variety of beetles and larvae of lepidopteron insect pest of them, Tribolium castaneum (Herbst) is a severe insect pest of stored commodities throughout the world. This insect is widely spreading various climatic regions throughout the world. Results of bioassay with Spinetoram exposed that maximum larval mortality was detected 88.87% and 44.04% after “48 hr” and “72 hr”. Exposure time period after 0.03% concentration, correspondingly. Minimum mortality 14.17% after “24 hr” at same concentration. At lower concentration 0.02%, maximum mortality 61.96% after “72 hr”, 31.65% after “48 hr” of exposure time period. Minimum mortality of 15.02% was observed after “24 hr”. At lowest concentration 0.01%, maximum mortality 60.38% was recorded at “72 hr”, 28.22% after “48 hr”. Whereas, minimum mortality 8.41% was detected after “24 hr”. The mortality was increased by increased the concentration of spinetoram and exposure time. Repellent activities of acetone based plant extracts of Eruca sativa, Azadirachta indica and Ricinus communis against the insect pest of stored grain commodities, Tribolium castaneum. Various concentrations (5, 10 and 15%) of the plant extracts were applied on the filter papers in the bioassay experiments and after the release of 15d old beetles, repellency was evaluated after fixed intervals (12, 24). Increased repellency was found at increased concentrations of plants. The concentration interaction and plant extracts findings for the treatments remained momentous. The generally findings exposed raised death rate with raise the doses and time period.
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