Özet:
Günümüzde arpa ve bugday ekim alanlarinin yaklasik %75'i süne zararlisinin tehtidi altina girmistir. Mücadele yapilmamasi durumunda kalite ve verim yönünden önemli zararlar meydana gelmektedir. Ani çikan salginlara karsi, zamaninda mücadele edebilmek gibi çok önemli avantajlarindan dolayi uçakla ilaçlama önem kazanmistir. Bu arastirmada, uçakla yapilan süne mücadelesinde ULV uygulamalarindaki ilaç etkinliginin belirlenmesi amaçlanmistir. Denemede, 6 adet AU 5000-2 atomizör sistemi ile donatilan Piper Pawnee D PA-25 260 tarim uçagi kullanilmistir. Örnekleme hattinda stadart örnekleme sehpalari ve toprak yüzeyine, damla dagilimini belirlemek amaciyla yaga duyarli kartlar yerlestirilmistir. Denemenin yapildigi bölgede, uçagin ULV ilaçlamasi yaptigi sirada meteorolojik kosullarin uygun oldugu belirlenmistir. Uygulamadaki karakteristik damla çaplari ve damla sayisi dagilim yogunlugu degerleri, fiziksel analiz yöntemiyle hesaplanmistir. Uygulama sonucunda; ortalama gerçek damla çapi degeri 108.7 µm, hacimsel ortalama çap (VMD) degeri 143.5 µm olarak belirlenmistir. Ortalama damla sayisi dagilim yogunlugu 4.21 adet/cm² olarak saptanmistir. Uçak is genisligindeki kalinti miktari teorik kalinti miktarinin %44.45'i olarak belirlenmistir. Ilaçlama sonrasi uygulama alaninda süne zararli populasyonu incelenmis ve süne bulunamamistir. Ilaçlamanin biyolojik etkinliginin yüzde yüze yakin oldugu saptanmistir.
Now days our grain and breas culture fields are affected in a proportion of %75 from the Sunpest(Eurygaster spp.). If we will not take metures to stop this attack that the all production quality and quantity will be endagered as early conderactions with best results the plain spread herbicidation gained hudge importance. In this research, it was aimed that determine influence of ULV spraying applied by aircraft against Sunpest (Eurygaster spp.). Piper Pawnee-D PA-25 260 which is equipped with six units of ?AU 5000-2? atomiser system used. Standart sampling stands were used as sampling line. Oil sensitive papers were put standart sampling stands and soil for determining of droplet distribution. In aria which trial was determined suitable meteorological conditions when ULV sprays by aircraft. In trial, characteristic droplet diameters of ULV sprays and droplet density were determined by physical droplet analyse. In this results, the real circumfrerence of drop was estabilished as 108.7 µm, Volume Mean Diameters (VMD) was determined as 143.5 µm. Avarage droplets densities was obtained as 4.21 droplet/cm². In the analyse, deposit amount was obtained as %44.45 of teorical deposit amount. After ULV spraying applied by aircraft, the population of dangerous Sunpest (Eurygaster spp.) was reaserched and it was not revealed any presence of it. The biological effect of ULV spraying was almost %100.
