Influence of Azotovite and Phosphatovite on the Productivity of Oats and the Fertility of Sod-Podzolic Soil in the Conditions of the Novgorod Region

Abstract

Sod-podzolic low-fertile soils (70% of the territory) are mainly widespread in the Novgorod region. According to the granulometric composition, the sown areas are mainly light and medium loamy. Technological operations include two methods of application of microbial fertilizers Azotovit and Phosphatovit: pre-sowing seed treatment (A+Ph, 2 l/t of each preparation) + foliar treatment in the phase of entering the tube (A+Ph, 1 l/ha of each preparation) together with mineral fertilizers (based on the planned yield and reduced by 50%), which contributes to an increase in oat grain production by 32 and 33%, and digestible protein by 30 and 34%, respectively, in relation to background 1 and background 2, where microbial fertilizers were not used. As an organic fertilizer, chopped straw of spring barley was plowed (4 t/ha) with addition of 10 kg of nitrogen for each ton. After harvesting cereals, a disc harrow was used to chop the straw and mix it with the soil at a depth of 0-10 cm.Taking into account the main articles of the arrival of humus (stubble-root residues of cereals and straw) in all variants of the experiment, soil fertility increased and its energy potential increased from 9 up to 16 GJ/ha.