بررسي جوانه زني بذور سس و امكان كنترل شيميايي آن در باغات كشور

The Effect of Herbicide Treatments on Dodder Seed Germination and the Possibility of Itʹs Chemical Control in Vineyards

Dodder (Cuscuta campestris Yunck) is a troublesome weed in vineyards which is hard to control. The effects of Treflan, Sonalan, Tramat and Dacthal for dodder control in vineyardd were evaluated. Due t.o the hard seed coat, the dodder seeds are not able to grcrminatc. Treating the dodder seeds in concentrated sulfuric acid softens the seed coat so they are able to germinate. The optimum temperature for dodder seed germination and hvpocotvl growth is 20-35C. Tramat inhibited dodder seed germination while Treflan, Sonalan and Dacthal were absorbed through epicotyl and hypocotyl and inhibited seedling emergence. The experiments conducted in the vineyards showed that Treflan at 3 Kg a. i./ha before shoveling and 1.5 Kg a. i./ha after shoveling, Sonaln 2.5 Kg a. i./ha before shoveling and L25 Kg a.i./ha after shoveling and Tramat 1.2 Kg ai /ha before shoveling and 0.6 Kg a.i./ha after shoveling could control dodder in vineyards effectively. In this study the effect of Dacthal was weaker than other herbicides. All herbicides were soil incorporated after treatment.