Production characteristics of small grains depending on the application of mineral fertilizers with high content of phosphorus and potassium

The aim of this study was to examine the impact of the application of mineral fertilizers with a high content of phosphorus and potassium on the productive characteristics of some small grains grown on pseudogley soils. The research was carried out in the vicinity of Kraljevo during the period 2011/2013. The experiment included wheat, winter barley and triticale and 3 variants of fertilizers (K − control; V1 − N80 P60 K60; V2 − N80 P80 K80 and V3 − N80 P100 K100). In addition to grain yield, absolute mass and hectoliter mass were observed. The obtained results were analyzed using the analysis of variance. There were no significant differences in yield, absolute mass and hectoliter mass of the grain between small grains. The use of fertilizers with an increased content of phosphorus and potassium led to a significant increase in grain yield, absolute mass and hectoliter mass of small grains compared to control. Among the variants V1 and V2, and V2 and V3 variants, there were no statistically significant differences in the absolute mass and hectoliter mass of the grain. The average values of grain yield of small grains ranged from 1510 kg ha-1 in the control variant up to 3209 kg ha-1 in the variant with the highest dose of phosphorus and potassium fertilizers. Significant differences in grain yield were observed between the variants V1 and V2, as well as between the variants V2 and V3. The application of only mineral fertilizers on acid soils leads to relatively low yields. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. TR-31054: Razvoj novih tehnologija gajenja strnih žita na kiselim zemljištima, koristeći savremene biotehnologije]