In this study, the effect of diniconazole which is used to control of rose rust (Phragmidium mucronatum) was investigated by reducing the application number and lowering the dose by addition of a spreader-sticker (Citowett). | Tr. J. of Agriculture and Forestry 22 (1998) 579-583 © TÜBİTAK Studies on the Effectiveness of Spreader-Sticker Added Diniconazole Against Rust (Phragmidium mucronatum (Pers) Schlecht) on Oil-Bearing Roses in Isparta Province* H. Murat AKSOY University of Ondokuz Mayıs, Faculty of Agriculture, Department of Plant Protection Samsun-TURKEY Y. Zekâi KATICIOĞLU University of Ankara, Faculty of Agriculture, Department of Plant Protection Ankara-TURKEY Received: Abstract: In this study, the effect of diniconazole which is used to control of rose rust (Phragmidium mucronatum) was investigated by reducing the application number and lowering the dose by addition of a spreader-sticker (Citowett). As a result, the following four doses and 3 application times (April 15+April 27+June 13) of each provided 100% control; recommended dose with spreader-sticker addition, recommended dose without spreader-sticker, half of the recommended dose with spreader-sticker, half of the recommended dose without spreader-sticker. Two application (April 15+April 27) with the recommended dose provided , two application with half of the recommended dose provided , two application with the recommended dose+sperader-sticker provided and two spraying with half of the recommended dose+spreader-sticker provided control. The effectivness of the treatments performed at one application time (April 15 or April 27) was below 60%. Isparta İli ve Çevresindeki Yağ Güllerindeki Pas Hastalığı (Phragmidium mucronatum (Pers) Schlecht)’a Karşı Yayıcı-Yapıştırıcı Kullanımıyla Diniconazole’un Etkinliğinin Arttırılması Üzerine Araştırmalar Özet: Bu çalışmada, gül pasına (Phragmidium mucronatum) karşı kullanılan diniconazole’un yayıcı-yapıştırıcı (Citowett) ilavesi ile dozun düşürülmesi ve ilaçlama sayısının azaltılmasının hastalığa etkisi araştırılmıştır. Araştırma sonucunda, yayıcı-yapıştırıcı ilaveli ve ilavesiz tam ve yarı dozlar, 3 ilaçlama (15 Nisan+27 Nisan+13 Nisan) ile