Effect of organic and mineral fertilizers on the accumulation of total nitrogen, phosphorus and potassium in the surface mass in cover crop of alfalfa

The article examines the effect of organic and mineral fertilizers on the accumulation of total nitrogen, phosphorus and potassium in the surface mass of alfalfa in the gray-meadow soils, which have long been irrigated and poorly supplied with nutrients in the Karabakh region. issues were commented: Provision of plants with essential nutrients during the growing season, productivity, product quality depends on the availability of easily digestible nutrients in the soil. In order to get high yields from agricultural crops, organic and mineral fertilizers should be applied to the soil every year in accordance with the norms established on the basis of soil cartograms, and cultivation techniques should be properly followed. The optimal diet for alfalfa depends on the optimization of fertilizer rates in different irrigations. The highest amount of total NPK was observed in the first form over the years and decreased in subsequent forms. Each of the formations in the surface mass was high in nitrogen and potassium, and low in phosphorus. In the 2nd and 3rd years of alfalfa condition, the total NPK was higher than in the first year in terms of formats. This is due to the fact that alfalfa increases the amount of nutrients in the soil and soil fertility. It also has a positive effect on the regulation of nutrients in the surface mass of alfalfa.