Studies on the effectiveness of spreader-sticker added diniconazole against rust (Phragmidium mucronatum (Pers) Schlecht) on oil-bearing roses in Isparta Province

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 90.79%, two application with half of the recommended dose provided 85.22%, two application with the recommended dose+sperader-sticker provided 93.72% and two spraying with half of the recommended dose+spreader-sticker provided 87.45% control. The effectivness of the treatments performed at one application time (April 15 or April 27) was below 60%.