Effect of different doses of nitrogen fertilizers and planting density on yield of wheat and triticale

Abstract

The paper analyzes the effect of different doses of nitrogen and planting density on grain yield in nine winter wheat varieties and one variety of triticale. All these varieties have been created at the Institute of Field and Vegetable Crops in Novi Sad. It was found that all three individual factors: variety, planting density and the amount of applied nitrogen had a significant impact on yields. Also, the interaction of variety/sowing density had a highly significant effect on yield, while the other interaction effects were not statistically significant. The highest yield was obtained in cultivar NS-40S, and was significantly higher than the of other varieties. On average for all varieties tested, highest yield was obtained when fertilizing with 100 kg ha-1 nitrogen, but was significantly higher only in comparison to the control variant. The highest yield was obtained at densities of 500 germinated seeds per m2, but not statistically significantly different than the yield obtained at 300 and 700 germinated grains/m2. The lowest yield was obtained at the highest planting density of 900 germinated grains/m2.

Keywords

• wheat
• nitrogen fertilizers
• planting density
• interaction
• cultivar
• yield