Prospects for the use of calcium ammonium nitrate on acidic soils of the Non-Black Earth Area

¹ All-Russian research institute of agrochemistry named after D.N. Pryanishnikova”, 31A, Pryanishnikova st., Moscow, 127550, Russia
² Business school of Russian State University for Humanities, Miusskaya sq. 6, Moscow, 125993, Russia

^* Corresponding author: vasilii.zhdanov@gmail.com

Abstract

The results of the effectiveness of the application of calcium ammonium nitrate (CAN) in winter wheat crops of the “Moskovskaya-39” variety on the dark-gray forest, heavy-loamy soil in the Ryazan region is presented. The advantage of CAN-a a universal form of nitrogen fertilizer, which has a neutral reaction and creates optimal conditions for feeding plants with nitrogen in the zone of its application, where the main mass of plant roots is located, is revealed. Along with nitrogen, fertilizer contains calcium and magnesium, which are essential for the formation of winter wheat productivity, the exchange of carbohydrates and proteins. In the field experience with winter wheat on soils not saturated with bases, the results were obtained, indicating the effectiveness of a physiologically neutral form of nitrogen fertilizer, which showed an advantage over physiologically acidic fertilizer - ammonia nitrate. Dynamics of the formation of the productivity of sowing showed that the area of leaves reached the maximum sizes by the flowering phase of 61.6-76.6 cm²/plant, the largest value of the indicator 76.6 cm²/plant was in the variant with the use of CAN feeding at a dose of 54 kg/ha of nitrogen. The use of CAN provided a reliable increase in the harvest of winter wheat grain in comparison with ammonium nitrate. The grain harvest in the experiment was 63.7 - 67.1 cents per hectare, statistically close were the values of yield in variants using CAN in doses of 68 and 54 kg/ha of nitrogen, the increase in the harvest was 3.8-5.3% respectively. The creation of optimal conditions for winter wheat during the growing season was accompanied by an improvement in the quality of the grain, in comparison with the variant with the use of ammonium nitrate.