Çukurova'da açık alanlarda yetiştirilen sebzelerde beyazsinek ( Bemisia tabaci Genn.)'İn popülasyon değişimi, doğal düşmanları ve mücadelesi üzerinde araştırmalar.
A. Ulubilir, C. Yabaş
1995
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Key Takeaway Key Takeaway: Enzyme inhibitors, such as pyridoxine, can effectively reduce the population of Bemisia tabaci in vegetable crops.
Abstract
Studies were conducted on population dynamics, natural enemies and chemical control cotton whitefly, Bemisia tabaci Genn., on vegetables in Adana and Icel provinces in 1992-1994. B.tabaci population dynamics were determined by weekly larvae and pupae countings on 10 cm2 area per 25 leaves. The natural enemies of B.tabaci were determined by surveying in eggplant, pepper, tomato, cucumber, melon watermelon areas in both Adana and Icel (1993) in the fields where population dynamics observed (1994). The larvae and pupae counting were conducted on 5 cm2 are on the leaf samples were taken from in each field. These leaf samples also taken under observation in the laboratory conditions. Besides these survey studies 50 strike with net was done on the diagonals of each survey field. The insects were caught by this method were differentiated and counted. The chemical control studies were conducted in eggplant fields infested with whitefly in Tarsus. The experiments planned and applied on the randomized block design and by standard methods of chemical experiments. In the chemical experiments following chemicals and dosages were applied Pyriproxyfen 50 ml/da and standard chemical cyhalothrin + buprofezin 300 ml/da. According to population dynamic studies B.tabaci occurs in early June, the peak points occur in August and September and population indicates sharp decline in October. No parasitoid were found in the larvae and pupae cultures in the laboratory. The most important predatory insects, Deraeocoris pallens (Reut.), Geocoris arenarius (Jak.), Piocoris sp., Nabis pseudoferus (L.), Orius sp. and Chrysoperla carnea (Steph.) were determined by net. The chemicals Pyriproxyfen (50 ml/da) which applied to larvae and pupae of B.tabaci were found as an effective chemicals, Pyriproxyfen effects were not sufficient on adults.