Influence of the organic fertilizer “EcoTerra-T” on the agrochemical properties of dark gray forest soil

The article is devoted to the effect of the organic fertilizer “EcoTerra-T” on the agrochemical properties of dark gray forest soil. The research was carried out on crops of spring wheat (Tríticum aestívum L/) of the Watan variety. The bioactivated organic fertilizer «EcoTerra-T» under study, obtained by fermentation of bird droppings, was applied in various doses: 1) 1 t/ha; 2) 2 t/ha; 3) 3 t/ha; 4) 4 t/ha; 5) control (without application). The studied soils of the experimental site are characterized by a slightly acidic reaction of the medium, a fairly high humus content in the humus-accumulative horizon. When using organic fertilizers, there is a tendency to increase the organic matter content by 0.1% (in variants with 1 t/ha and 2 t/ha) and 0.2% (in variants with 3 t/ha and 4 t/ha). Fertilization contributed to an increase in the nutrient content in the soil to the level of “very high” in phosphorus and “high” in potassium and nitrate nitrogen. The supply of ammonium ion to the soil increased from the “very low” level to the “low” level when applying the studied fertilizers. With an increase in the dose of organic fertilizer, the yield increases to an average of 30%, the nitrogen content to 43%, phosphorus to 11%, and potassium to 28% in the soil. The most pronounced effect is observed in variants with 2–4 t/ha.

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