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Insecticide resistance in Colombia and Ecuador
(Centro Internacional de Agricultura Tropical - CIAT, 2005)
Farmer interviews conducted as part of extensive on-farm surveys for the diagnostic phase of the Tropical Whitefly Integrated Pest Management (TWF-IPM) Project (Rodríguez and Cardona, 2001; Chapter 4.1, this volume) showed that insecticide use against whiteflies in Colombia and Ecuador is excessive. In the tropical highlands and mid-altitude valleys, farmers spray their crops 5 to 6 times on average to control Trialeurodes ...