S.V. Lukin1, S.V. Selyukova2
1Center of Agrochemical Service «Belgorodsky», ul. Shchorsa, 8, Belgorod, 308027, Russian Federation
2Belgorod State National Research University (NRU “BelSU”), ul. Pobedy, 85, Belgorod, 308015, Russian Federation
Summary. The article presents the materials of the agroecological monitoring conducted by the agrochemical service in Belgorod region. The results characterizing the content of Zn, Cu, Co, Mo, Cr, Ni, Cd, Pb, Hg, As in arable soils and the main organic fertilizers, are analyzed. It is calculated the balance and time to reach APC (approximate permissible concentration)/MPC (maximum permissible concentration) of the elements in the soil with the usage of organic fertilizers in a five-field crop rotation. The application of manure at the dose of 40 t/ha during one rotation of the five-field grain-row crop rotation contributes to the formation of the positive balance of all studied elements. However, this does not constitute an environmental danger, since the time of their accumulation in the soil up to APC/MPC level is thousands of years. The usage of straw-dung compost at the dose of 20 t/ha leads to the formation of a positive balance of all elements except for mercury. Zinc and copper accumulate the most intensively; the predicted time of reaching APC is 202 and 262 years, respectively. When using 70 t/ha of pig manure waste drain there is a negative balance of molybdenum, chromium, nickel, cadmium, mercury, arsenic, and very small, representing no danger, a positive balance of copper, cobalt, and lead. The use of waste drain strongly affected the accumulation of copper; the time to reach APC in soil is 290 years. Since almost all arable soils of Belgorod region are classified as low-provided by mobile forms of zinc and copper, the use of organic fertilizer is an important source of the influx of these elements in an agrocenosis.
Keywords: zinc, copper, cobalt, molybdenum, chromium, nickel, cadmium, lead, mercury, arsenic, trace elements, heavy metals, organic fertilizers, soil.
Author Details: S.V. Lukin, D. Sc. (Agr.), director (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.); S.V. Selyukova, post graduate student (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.).
For citation: Lukin S.V., Selyukova S.V. Agroecological Assessment of the Influence of Organic Fertilizers on the Microelement Composition of Soil. Dostizheniya nauki i tekhniki APK. 2016. V.30. No. 12. Pp. 61-65 (in Russ.).