Effectiveness of application of microfertilizers under cotton plant in meadow-gray soils of Shirvan plain (Azerbaijan)

In order to obtain a high yield and to raise the level of fertility, it is necessary to systematically replenish the soil with nutrients. To create favorable conditions for plant nutrition and a high yield of agricultural crops, it is necessary to use macroand micro fertilizers in the system of measures for the chemicalization ofagriculture. Macronutrients - nitrogen, phosphorus, potassium - are found in most soils, including meadow-gray soils in sufficient quantities, but their additional application increases the yield of plants. Therefore, there is no doubt that with the addition of trace elements to the soil, there will also be an increase in plant yield. As a result of the application of different doses of mikronutrients-manganese, molybdenum, zinc and copper under the cotton plant on the background of nitrogen, phosphorus and potassium, it was determined that the applied micronutrients had a positive effect on the productivity of cotton plants at all test doses. Productivity increased when molybdenum was applied at 1 kg per hectare, manganese and copper at 2 kg, and zinc at 1,5 kg. The highest yield increase was in the variant where molybdenum was applied at 1 kg per hectare, and the average yield for 3 years 4,9 c (29,9 %) per hectare.