Scientific Journal of KubSAU

Polythematic online scientific journal
of Kuban State Agrarian University
ISSN 1990-4665
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Fedashchuk Evgeny Dmitriyevich

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Kuban State Agrarian University
   

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Articles count: 2

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INTERRELATION OF VARIOUS FORMS OF COMPOUNDS HEAVY METALS IN AN ARABLE LAYER OF EARTH AND THEIR ACCUMULATION IN GRAIN OF WINTER CROPS

abstract 1111507042 issue 111 pp. 737 – 757 30.09.2015 ru 642
In the article we consider the influence of agricultural technologies of cultivation of winter crops on existence of various forms of heavy metals in an arable layer of earth in the conditions and their accumulation in grain production. The gross content of compounds of copper in an arable layer of black leached soil is above background values (maximum concentration limit 1,5-1,7), a share of the fixed connections makes 75 %. The gross content of zinc exceeds background value for chernozems (1,25 clark). The correlation of the water mode of the soil and the content of mobile compounds of heavy metals in an arable layer - a straight line for Cu and the return for Mn , Pb, Cd and Co. Supplement of an arable layer of earth with mobile forms of copper, zinc and cobalt low, manganese - corresponds to the average level. Speaking of the degree of actual mobility the studied elements settle down in sequence: Cd> Mn> Co> Pb> Zn> Cu. Degree of potential availability decreases among: Zn> Mn>Pb> Co> Cu. The existence of Mn, Cu, Zn and Co in grain of wheat is lower than maximum concentration limit, and accumulation of Pb and Cd is higher than maximum concentration limit in grain production for baby food for 10-15 %, that increases individual risk of death to the maximum permissible level
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