Effect of Mineral Fertilizers and Liming on the Content and Biological Absorption of Heavy Metals by Oat Plants
Resumo
In a long-term stationary experiment in grain-grass-row crop rotation, the content of Cd, Pb, Cu and Zn in grain and straw of oats was studied against the background of the use of mineral fertilizers (nitrogen, phosphorus and potassium) and liming, and without it. Agrochemicals changed the content of heavy metals (HM) in the main and by-products of oats. The requirements of hygienic standards for the content of HM in crop production were not violated in the conditions of the experiment. Under the conditions of using chemicalization agents, the biological absorption of HM by oat plants changed. Straw was characterized by a barrier ability with respect to Pb. Correlations of HM contents among themselves in both grain and oat straw changed under the influence of agrochemicals from negative to positive and vice versa.