CONSEQUENCE OF SEDIMENTS OF SEWAGE WATER OF THE CITY OF PENZA AND NATURAL ZEOLITES ON YIELD AND QUALITY OF PLANT
2020
A.N. Arefyev | E.N. Kuzin | G.V. Ilyina
In conditions of a low level of use of mineral fertilizers in agriculture due to their high cost and the almost complete absence of organic fertilizers, the development and implementation of techno-logical methods for using alternative sources of organic matter and nutrients in agricultural practice is an important area of modern farming. The objective of the research was to study the aftereffect of reclamation norms of sewage sludge in the city of Penza and their combinations with zeolite-containing rocks on the yield and quality of crop products. The studies were conducted in the first agricultural-soil region of the Penza region in grain-crop rotation in the period from 2014 to 2019. It was established that the most significant effect on the grain yield of oats and peas was exerted by increased sediments rates of urban wastewater with zeolite-containing rock. The yield of oats against their background increased by 43.5-44.2%, the productivity of peas – by 48.9-49.8%. The collection of digestible protein in oat crops against their background was 487.9-490.3 kg/ha, the protein content in pea grain increased by 2.3-2.7%. Sediments of urban wastewater in its pure form and in combina-tion with zeolite-containing rock increased the concentration of heavy metals in the grain of oats and peas. However, the concentration of heavy metals was significantly lower than the maximum permis-sible concentration. The zeolite-containing rock reduced the influx of heavy metals into the marketable part of crop production.
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