Wednesday, December 15, 2010
Grand Exhibit Hall (Town and Country Hotel and Convention Center)
In 2009 and 2010, thrips management experiments were conducted in peanut and cotton (2010 only) to evaluate Cyazypyr™ 200SC for thrips control. It was applied at different rates as a liquid into the seed furrow at planting, and in cotton, followed by a post emergence foliar broadcast. Cyazypyr™ was compared to standards including Thimet 20G (peanut only) and Temik 15G applied in-furrow, and Orthene 97 as a foliar broadcast (cotton only). In 2009, all treatments had significantly less plant injury on all post treatment sample dates and significantly fewer immature thrips on 2 and 9 June than the non-treated control. Treatments significantly reduced Tomato spotted wilt incidence on 28 Sep relative to the non-treated control, with differences between treatments. Yields were statistically the same among insecticide treatments and were 676 kg peanut/ha higher than the non-treated control. In 2010, all treatments in both cotton and peanut had significantly less plant injury relative to the non-treated control on all post treatment sample dates. All insecticide treatments in peanut had significantly fewer immature thrips than the non-treated control on 25 May and 1 June, and all treatments in cotton had significantly fewer immature thrips than the non-treated control on 24 and 31 May and 9 and 16 June. Adult thrips from each treatment in both trials were collected and identified to species.