SYNERGISTIC BIO-PESTICIDE COMBINATION OF PYRETHRINS AND ROTENOIDS

Citation:
"SYNERGISTIC BIO-PESTICIDE COMBINATION OF PYRETHRINS AND ROTENOIDS." International Journal of Humanities, Arts,. 2014;2(3):43-48.

Abstract:

Pyrethrins and Rotenoids extracts from Chrysanthemum cinerariaefolium and Tephrosia vogelii plants
respectively were combined at various ratio mixtures and tested against adult cockroach Americana periplaneta for their
efficacy. A mortality rate of 86% in 200 minutes with a synergistic ratio mixture of 28.5:1 w/w was established.
The mixture was found to have an observed LC50 of 0.23mg/g and a theoretical LC50 of 0.92mg/g calculated from the
individual Pyrethrins and Rotenoids extracts. The synergism expressed as co-toxicity coefficient CC, was found to be 4.
The photodegradation of Rotenoids in the combination was found to have a half life of t1/2 of 6.1hrs compared to that of
Rotenone and Pyrethrins of 3hrs respectively.

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