The effectiveness of sapropel as an organic fertilizer is revealed. It was compared with the traditional organic and mineral fertilizers. So, the most noticeable softening of the soil compared to the control variant was after application of sapropel. During the study, application of sapropel maximally increased the content of nitrate nitrogen in the soil from 2.8 to 4.1 mg/kg, exceeding the indicator of ammonium nitrate by 48.8% and manure by 36.6%. Sapropel increases the content of mobile forms of potassium in the soil over an average of 2 years from 306 to 316 mg/kg, while the content of mobile phosphorus is minimal - 20.3 mg/kg. The highest yield of spring wheat was in the variant the variant after application of ammonium nitrate in a dose of N60 (1.64 t/ha) and sapropel in a dose of 6 t ha (1.57 t/ha).
The article presents the results of a study of the effect of nitrogen fertilizers on the productivity of the root and vegetative masses of various cenosis (virgin lands, fallow lands, arable land under spring wheat) in an agrolandscape.
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