Accumulation of cadmium in green mass of corn on soils fertilized with manure
https://doi.org/10.46845/1997-3071-2025-78-53-64
Abstract
Soils contaminated with heavy metals become unsuitable for growing environmentally friendly products. Cadmium (Cd) is one of the most dangerous ecotoxicants. The Cd content is subject to mandatory standardization in soil, agricultural raw materials, feed and food products. Cadmium enters arable fields, including as part of manure. This study is devoted to the investigation of the effect of systematic application of high rates of traditional organic fertilizers (liquid fractions of pig manure and cattle manure) on the accumulation of Cd in soil and plant products (green mass of corn). As a result of research, it has been established that long-term application of significant rates (~200–250 tons per hectare) of manure effluents leads to an increase in the content of total and mobile Cd in agrosoddy-podzolic soils. When assessing the risks of Cd pollution of plant products, it is important to take into account the ratio of pH and organic matter in agrozem. The most active bioaccumulation of Cd occurs in acidic soils with a low content of organic matter. Application of manure to neutral or slightly alkaline soils promotes the formation of mobile, but poorly accessible to plants fulvic complexes. The coefficient of biological absorption of Cd for the green mass of corn grown on fields fertilized with manure effluents is 1,5–2,0, which indicates biogenic accumulation of the corresponding heavy metal. The dependence of the value of the biological absorption coefficient on soil properties is insignificant. The coefficient of biogeochemical absorption of Cd by the green mass of corn varies within a wider range (from 2 to 9) and significantly depends on soil properties. The highest level of the biogeochemical absorption coefficient has been found for acidic agro-sodpodzolic soils.
About the Authors
L. V. Pilip
Vyatka State Agrotechnological University
Russian Federation
Russian Federation
Larisa V. Pilip, PhD in Veterinary, Associate Professor,
Kirov
N. V. Syrchina
Vyatka State University
Russian Federation
Russian Federation
Nadezhda V. Syrchina, PhD in Chemistry, Associate Professor, Senior Researcher,
Kirov
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For citations:
Pilip L.V., Syrchina N.V. Accumulation of cadmium in green mass of corn on soils fertilized with manure. KSTU News. 2025;(78):53-64. (In Russ.) https://doi.org/10.46845/1997-3071-2025-78-53-64
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