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The Central Scientific Agricultural Library of the Russian Academy of Agricultural Sciences is a Bibliographic Center for Agricultural Science and Industry in Russia

Journal Article

Journal article

Radioecological aspects of mineral fertilizers application at radioactively contaminated feeding fields  [2016]

Belous, N.M.; Smol'skij, E.V., Bryansk State Agrarian Univ. (Russian Federation); Podolyak, A.G.; Karpenko, A.F.;

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In the context of the Bryansk (Russia) and Gomel (Republic of Belarus - RB) regions from 1994 to 2012 studied was the efficacy of mineral fertilizers in the rehabilitation of natural grassland on different tillage backgrounds to increase yield and reduce the ingress of Cs-137 from the soil into hay. Stationary experiments were conducted in 1994-2007 in the Gomel region (the Republic of Belarus and in 2008-2012 in the Bryansk region (RF). The soils of the experimental plots are alluvial sod hydromorphic having a contamination density of 559867 kBq/m2. During reseeding grass stands N45P60K60 or N45P60K75 in the RF and N45P60K90 in RB were applied. After the 1-st growth N45K60 or N45K75 in the RF and N45K90 in the RB were applied before top dressing. With simplificated improvement the 1-st growth hay yield was 1.44 t/ha in the RF and 2.89 t/ha in the RB, the 2-nd growth hay yield was lower 2.5 and 2.7 times, respectively. Applying said doses of fertilizers increased the hay yield 1.6-2.9 and 2.3 times in the 1-st and 2-nd growths, respectively. In case of no fertilizer the content of Cs-137 in hay exceeded the standard 5.4-7.4 times. Under effect of fertilizers an excess of the standard reduced 2.6-3.3 times, but the feed still did not meet the veterinary-sanitary requirements. Additional application of K15 and K75 reduced the content of Cs-137 to the standard requirements. Thus, nitrogen fertilizers served the main source of increasing the productivity of th
e phytocoenosis considered, and potassium fertilizers provided obtaining the yields of hay meeting the veterinary requirements thereby reducing the dosage loads on farm animal bodies. For producing meat and milk meeting the radiation safety standard, it is necessary to use no more than 5 kg of hay per day and apply a complete fertilizer in the cultivation of perennial grasses for hay in N90P60K150 dose.

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Agrochem Herald

ISSN : 0235-2516