EFFECT OF DIFFERENT UREA APPLICATIONS ON YIELD, YIELD COMPONENTS AND QUALITY TRAITS IN DURUM WHEAT

This study was conducted to determine effect of different urea applications on yield, yield components and quality in “Ç- 1252” durum wheat variety in Konya ecological conditions during 2007-2008 growing season. Experimental design was “in randomized complete block design” with three replications. In this study, diammonium phosphate (170 kg ha-1; 80 kg P2O5 ha-1 + 30 kg N ha-1 ) was applied to all plots during sowing. Urea fertilizer was added as 10 kg/da N with seven various methods in spring; kontrol (U1), application on soil surface in one time during tillering stage(U2), application under soil in one time during tillering stage(U3), application in two equal amounts on soil surface during tillering and heading stages(U4), application in two equal amounts on soil surface during tillering stage and with sprinkler during heading stage(U5), application in two equal amounts under soil during tillering and heading stages(U6), application in two equal amounts with sprinkler during tillering and heading stages(U7). In this study, it was determined that there were statistically significant differences in effect of different urea applications on plant height, seed number per spike, 1000 kernel weight, grain yield, percentage of vitreousness and protein. Results of this study showed that in addition to nitrogen application during sowing, urea application with sprinkler during tillering and heading stage was determined to be more effective than other applications when yield and quality were taken under consideration together.