Efficiency of processing products application of biogas plant in greenhouse farming

The article describes the results of scientific research on the study of chemical composition of solid products of poultry manure processing in a biogas plant LLC “NPO “Agrobiogaz”, St. Petersburg. Biofertilizer has the structure of semi-decomposed peat, it disperses well, has a faint smell of manure. 1 ton of natural substance contains, an average, 16.5 kilogram per ton of total nitrogen, 20 kilogram per ton of total phosphorus, and about 16 kilogram per ton of total potassium, as well as microelements. The content of heavy metals within the requirements; there are no traces of pesticides.