Heavy Metal Contamination of Gray Forest Soil in Oilseed Agrocenoses using Mineral Fertilizers

Abstract

Background: The purpose of the research is to study the features of contamination of dark gray forest soils with heavy metals and to establish the yield of oil cabbage crops as a result of the use of various levels of mineral nutrition in the conditions of the Non-black earth zone of Russia. Methods: The experiments were carried out on the dark gray forest soils of Ryazan region in crops of spring rape, white mustard and gray mustard (Sarepta). Soil sampling to determine HMs was carried out before the experiment. Determination of heavy metals was carried out by atomic absorption spectrometry using a semi-quantitative spectral method on a spectrophotometer in the laboratory of the State Station of the Agrochemical Service “Ryazanskaya” and the laboratories of the university. Result: The studied types and combinations of mineral fertilizers had effect on the growth and development of plants. The effectiveness of the use of mineral nutrition doses proves its high efficiency in studies with oilseed crops in the conditions of the Non-Chernozem zone of Russia. The highest yields, for spring rapeseed (19.3 dt ha-1), for gray mustard (13.7 dt ha-1) and white mustard (12.2 dt ha-1), were observed in the variants with the action of N90-120P60K60.