Vol.18_No.2 - Pesticide Alternatives Lab - Michigan State University

Spring 2009 Resistant Pest Management Newsletter Vol. 18, No. 2
Based on significant and dramatic increased
LC 50 values compared with a laboratory and fieldcollected
population, our results indicated that L.
sativae from cucumber greenhouse production
operations had developed resistance to the very
different modes of action between these three
compounds (an IGR [cyromazine] and a nerve toxicant
[abamectin] and biotic insecticide [spinosad]). This
would also indicate that cross-resistance would not be
expected. Given the different modes of action and no
cross-resistance among these three insecticides, they
should be considered in rotation for leaf miner control
in an insecticide resistance management strategy.
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F. Saberfar¹ and A. Sheikhi Garjan ²
1. Dept of Plant protection, Collage of Abouraihan,
University of Tehran, Iran
2. Plant Protection Research Institute of Tehran, Iran
Corresponding Author E-mail: fzeshti@gmail.com
Abstracts in Resistance Management
Baseline Susceptibility of Oriental Fruit Moth (Lepidoptera: Tortricidae) to Selected
Insecticides
The oriental fruit moth (OFM), Grapholita
molesta (Busck), has been a serious pest of peaches,
apples, and other fruit crops since its introduction into
North America in 1916. Severe infestations were
reported in IL for apples in 2006, and OFM
populations in southwestern IL are thought to be
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