Published in Scientific Papers. Series A. Agronomy, Vol. LXIII, Issue 1
Written by Alexander AREFYEV, Evgeny KUZIN, Oleg KUKHAREV, Julia KULIKOVA
The intensive development of agricultural production in the forest-steppe regions requires solving the problem of preserving the soils and their effective fertility. In this regard, the development and implementation of technological methods for preventing soil degradation in agricultural areas using local cheaper raw materials and agronomic ores (fertilizing ores) are the urgent areas of modern agronomic science. The purpose of the research was to study the effects and consequences of sewage sludge from urban waste waters and their combinations with zeolite on soil fertility and productivity of grain crops. It was found that the reclamation rates of urban wastewater sludge in combination with zeolite-containing agronomic ores increased the humus content in the arable layer of the soil by 0.23-0.36%, provided transformation soils from unsatisfactory structural state into a class with good soil and reduced the bulk soil density of the arable layer by 0.12-0.21 g/cm3 The urban sewage sludge (160 and 180 t/ha) and the urban sewage sludge (140-180 t/ha) in combination with zeolite increased the productivity of grain crops by 57.8-70.0%.
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