Effects of fertilization on production traits of winter wheat

The wheat cultivar used in the experiment was Kruna. This investigation included an untreated seven variants of fertilization: 1-control, 2-80 kg/ha N, 3-60 kg/ha P2O5, 4-80 kg/ha N, 60 kg/ha P2O5, 5-80 kg/ha N, 100 kg/ha K2O, 6-80 kg/ha N, 60 kg/ha P2O5, 60 kg/ha K2O and 7-80 kg/ha N, 100 kg/ha P2O5, 60 kg/ha K2O. Total amounts of phosphorus and potassium fertilizers and half the nitrogen rate are regularly applied during pre-sowing cultivation of soil. The trial was set up in a randomized block design with five replications. The crop was harvested at full maturity. Grain yield (t/ha) was harvested and reported at 14% moisture. Three parameters were analyzed: test weight (kg/hl), 1000-grain weight (g) and grain yield (t/ha). Investigation where showed a considerable variation of grain yield which were in dependence from mineral nutrition. The highest grain yields were the highest with mineral fertilizer in the combined N80P100K60 (4.738 t/ha). Over the two-year period, all investigated treatments of wheat achieved the highest average 1000-grain weight in the combined N80P60 (43.08 g). The highest test weight was the highest with mineral fertilizer in the combined N80P60K60 (73.63 kg/hl). Analysis of variance was found highly significant effect of years on 1000 grains weight.