The effect of long-term use of organic and mineral fertilizers in the agrocenoses of the Komi Republic

The stationary field experiment in soddy-podzolic sandy loam verified the effect of organic and mineral fertilizers and their combinations on the potato productivity. Additionally, the properties of soddy-podzolic sandy loam in conditions of six-field fodder crop rotation were analyzed. The complex application of fertilizers was found to have the maximum effect on the agrochemical properties of the soil and its productivity. For example, the content of humus increased by 0.4 %, mobile phosphorus - by 120 mg/kg. Simultaneously, the exchangeable and hydrolytic soil acidity, as well as the amount of exchangeable potassium, decreased. The complex application of organic and mineral fertilizers, especially in high doses, increased average potato yields and quality. The average yield of 5.5 t potato dry matter of high quality/ha was obtained on the application of 80 t/ha of peat-manure compost and a full dose of mineral fertilizers (N60P30K180).