Efficiency of fertilizer application

The article presents research data on the influence of the timing and norms of foliar fertilization on the total leaf area of winter soft wheat throughout various developmental phases, as well as on the economic efficiency of foliar feeding under different mineral nutrition conditions for winter wheat. It highlights the positive effect of foliar fertilization with various biostimulants on the weight of 1000 grains, total protein content, and crude gluten levels. Although the highest indicators were observed under conditions of high agrochemical background with fertilization applied at each phase of the growing season, it was established that optimal levels for all aforementioned parameters can be achieved through a single foliar application before the emergence of the flag leaves, alongside a reduction of mineral fertilizers by half. The practical results of the study indicate that under light gray soils, the application of fertilizers for winter wheat at a rate of 50% (NPK 90:45:30 kg/ha) of the traditional norms (NPK 180:90:60 kg/ha), as well as the use of liquid suspension preparations enriched with macro- and microelements of various components, has demonstrated an effect in terms of the conservation of mineral fertilizers, as well as an increase in both yield and grain quality.