14. Recycling and balance of nutrients at alternative fertilizer systems of sugar beet

https://doi.org/10.31073/agrovisnyk201803-14
Pavuk I. A.
Pages: 79-83.

Full article: 
Abstract
The purpose. To study features of recycling of nutrients in agrocenosis of sugar beet and to generate their equilibrated balance at alternative organic-mineral fertilizer systems. Methods. Short-term field and laboratory-analytical with mathematical processing of the gained results. Results. They show circulation and balance of nitrogen, phosphorus and potassium at cultivation of sugar beet with the use of traditional and alternative fertilizer systems. Conclusions. Use at cultivation of sugar beet of 5 t/hectare of straw + green manure crop + N90P60K90 + + N50 + Maximus, 4 kg/hectare is specified by highly efficient and ecologically balanced fertilizer system. Such application of fertilizers formed the equilibrated balance of nutrients in agrocenosis of sugar beet: nitrogen and phosphorus —  5 kg/hectare + 10 kg/hectare accordingly, and deficiency of potassium (at level of 69 kg/hectare). Use as fertilizer of haulm of sugar beet refunded in soil 49% of nitrogen, 40% of phosphorus, and 50% of potassium (from their economic remo­val). That made it possible to enter 139 kg/hectare of nitrogen, 35 kg/hectare of phosphorus, and 161 kg/hectare of potassium under the next crop in rotation in the form of easily accessible organic compounds.

Key words: nutrients, balance, recycling, sugar beet.

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