FOLIAR DRESSING OF CROPS WITH HUMIC FERTILIZERS IN THE EXPERIMENTAL CROP ROTATION

Abstract

Under the conditions of the right bank of Saratov Oblast, the crop response to the preparation with a high humic acid content, applied in a four-field crop rotation, was studied. The objects of the study were fodder crops of stationary grain-fallow-tilled crop rotation – grain sorghum, Sudan grass, phacelia, Japanese millet. Humic fertilizers had a positive effect on plant growth processes, thereby contributing to the formation of green mass. For the "ripe plant height" parameter, the maximum excess of indicators was noted in Sudan grass, compared to the control option. Concerning the parameter "inflorescence length", in the options treated with Zdoroviy Urozhay, the excess was 20.7% in grain sorghum and 24.7% in Japanese millet. The application of Reasil Forte Carb-N-Humic had a positive effect on the inflorescence length parameter of Japanese millet and grain sorghum, increasing it by 12.0 and 14.9 %, respectively. When using Reasil Forte Carb-N-Humic, the increase in crop biomass was 4.4-9.4%, compared to the control. The application of Zdoroviy Urozhay proved to be much more effective. When using it, biomass yield increased by 7.6-13.8 %. Foliar dressing with Zdoroviy Urozhay had a significant impact on grain yields in all options of the experiment. The increase was 12.5-39.3 %. When using Reasil Forte Carb-N-Humic, the increase was 6.7-11.8 %. In the experiments, the maximum effect was obtained when applying the fertilizer Zdoroviy Urozhay, compared to Reasil Forte Carb-N-Humic. Japanese millet and Sudan grass were the most responsive to foliar dressing. The results of the studies confirm the effectiveness of humic fertilizers in the form of foliar dressing treatments in the cultivation of forage crops.

Keywords

• foliar dressing
• humic acids
• yield
• grain sorghum
• sudan grass
• phacelia
• japanese millet