Effects of Nitrogeneous Fertilizer Forms and Doses on Yield in Brined Fresh Vine Leaves in Narince Grape (V. Vinifera) Cultivar

Abstract

The main object of this study was to determine the effects of increasing levels of ammonium nitrate, ammonium sulphate and urea on resh the vine leaves yield in Narince grape cultivar (Vitis Vinifera L). Vines trained with bilateral cordon system was pruned to yield 5000 buds/da (24 buds/vine) above one or two buds in 2012 vegetation period. Three levels of nitrogen (0-control, 5, 10, 15 kg N /da) were applied to vines, in a split parcels with four replications. Young vine brined leaves were collected five times during growing season, and fresh brined leaves yield ( kg/da) were determined. Fertilizer form applications had significant effect on fresh leaf yield. Fresh leaf yield varied from 312.4 (Control) to 437.1 kg/da (ammonium nitrate 10 kg N/da). Vine fresh leaves yield increeased with increasing of N doses. Nitrogen applications were increased fresh leaves yield by about 30%. According to experimental results, 10 kg/da N provided the highest vine leaves yield. Ammonium nitrate treatments had given more yield vine leaves yield than the other fertilizing treatments.