EFFECTS OF DIFFERENT FERTILIZATION TREATMENTS ON THE YIELD PERFORMANCE, YIELD PARAMETERS AND GRAIN QUALITY OF WINTER WHEAT GROWN ON VERTISOL SOIL TYPE

Abstract

Fertilization effects were performed in a stationary type of field trial, on a vertisol soil type, on the premises of the Small Grains Research Center in Kragujevac, central Serbia, over a three-year period (2010–2013). In addition to untreated control, the trial included six mineral nutrition treatments: (1) N0P0K0; (2) N80P0K0; (3) N80P60K60; (4) N80P100K60; (5) N80P60K0; (6) N80P100K0; (7) N80P0K60. Individual fertilizers used in the trial were as follows: KAN (nitrogen fertilizer), super phosphate (phosphate fertilizer), and 60% of potassium salt (potassium fertilizer). Mineral nutrition treatments mentioned above were applied in the two winter wheat cultivars: Ana Morava and KG 100. Favorable physical properties of the soil are of major importance for efficient growth of wheat. In this regard, the aim of this study was to determine to what extent the different fertilizing treatments influence yield performance, yield parameters and grain quality of winter wheat cultivars grown on vertisol soil type. The highest yield of winter wheat over the three-year trial was obtained from the Ana Morava cultivar (6,276 kg ha-1 ) in the treatment that involved the application of N80P60K60. Variance analysis implied very highly significant individual effects of study year and fertilization on grain yield in the studied winter wheat cultivars, as well as very highly significant effect of interaction between year × fertilization