02. Nutritive regimen of leached chernozem at use of different fertilizer systems for sugar beet cultivation

https://doi.org/10.31073/agrovisnyk201804-02
Ivanina V. V., Pavuk I. A., Mazur G. M.
Pages: 13-19.

Full article: 
Abstract
The purpose. To study efficiency of traditional and alternative organic-and-mineral fertilizer systems in formation of nutritive regimen of sandy loam leached chernozem. Methods. Short-term field, laboratoryanalytical, mathematical processing of the gained results. Results. Dynamics of the content in soil of movable joints of nitrogen, phosphorus and potassium is shown at application for cultivation of sugar beet of traditional and alternative fertilizer systems. Conclusions. The alternative fertilizer system (N90P60K90 + straw + green manure crop) is recognized to be more efficient for improvement of nutritive regimen of leached chernozem. On the beginning of vegetation the content of mineral nitrogen at its application has increased up to 30–35 kg/hectare with flushing out of nitrate nitrogen to the depth of 0–90 cm, and of ammonium nitrogen — to 0–60 cm. During the vegetation period nitrate nitrogen of soil was used by plants on 70–90%, and ammonium nitrogen — on 10–40%. The content of movable joints of phosphorus and potassium at alternative fertilizer system increased mainly in arable layer of soil (0–30 cm) on 20 and 10 mg/kg of soil accordingly (60 and 30 kg/hectare) and preserved relative stability during vegetation.

Key words: nutritive regimen, leached chernozem, fertilizer system.

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