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Statewide average foliar insecticide intensity (∼ sprays) made in cotton for key pests over time, 1990–2008, Arizona, USA. The IGRs, pyriproxyfen and buprofezin, and transgenic Bt cotton were introduced in 1996; pink bollworm eradication program efforts began in 2006 and flonicamid for Lygus control became available in 2006–2007 (derived from124).
