2013•Pest Management in Horticultural EcosystemsOpen access

Efficacy of certain new acaricides against two spotted spider mite, Tetranychus urticae Koch. on ridge gourd

D. Srinivasa Reddy, M. Latha

Abstract

Experiments were conducted in farmers field in Kadapa district, Andhra Pradesh during summer seasons of 2011 and 2012 using ridge gourd variety Ranjit to test the bio-efficacy of new acaricides (Fenazaquin, Spiromesifen, Hexythaizox and Fenpyroximate) against two spotted spider mite, Tetranychus urticae Koch. The results revealed all the new acaricides tested were effective against two spotted spider mite and recorded 55.55-99.66% mortality up to 14 days after spray as compared to standard acaricide, dicofol during I season (2011) and 66.50-100 % mortality in II s eason (2012). Fenazaquin and spiromesifen offered superior control over all other acaricides.

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Key concepts: Acaricide, Tetranychus urticae, Dicofol, Spider mite, Biology, Toxicology, Spider, Mite