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¹ Tarım Kredi Kooperatifi, Çakırbeyli, Aydın
² Adnan Menderes Üniversitesi, Ziraat Fakültesi, Bitki Koruma Bölümü, Aydın DOI : 10.21566/tarbitderg.281875 - The study was conducted to evaluate the population dynamics of piercing-sucking pests in cotton planted as a second crop in Aydın, Söke. In the study May 373 (high hair), Flash (low hair), and Gloria (no hair) were used. At the end of study A. gossypii was reached to highest amount with 5.54 and 14.47 per leaf in 2012 and 2013 in May 373. B. tabaci was reached to 1.08 per leaf in May 373 in 2012 and 0.42 in flash in 2013. Tetranychus spp. was reached to 9.59 and 8.65 per leaf in May 373 in 2012 and 2013. On the other hand, Frankliniella spp. was reached to 28 per flower in both years in Flsah. Asymetrasca decedens+Empoasca decipiens and Thrips tabaci were observed low amount. As a result, hair on leaf affected the amount of piercing-sucking pests in cotton and this can be used for the management against the insects. Keywords : Cotton, second crop, piercing-sucking