The influence of fertilizer rates on yield and accumulation of nutrients in the aboveground part of potatoes

The article considers one of the methods of cultivation of the Sevinj potato variety on the mountain chernozems of the Gadabay region of Azerbaijan. The dynamics of mobile forms of nitrogen, the effect of organic and mineral fertilizers were studied with different options for applying organic and mineral fertilizers. On average, over 3 years, the amount of nitrogen, phosphorus and potassium is significantly reduced in the flowering and ripening phases of the growing season. The yield of the Sevinj potato variety varied depending on the fertilizer rates and preparation of potato seeds for planting. The productivity of potatoes in options with the application of mineral and organic fertilizers in different rates and proportions was significantly higher than in the control option. The average productivity in the option with the application of 10 tons of manure was 175 c/ha or 16.66% compared to the control option, in the option with the application of 15 tons of manure it was 195 c/ha, 45 c/ha or 30.00% compared to the control.