Abstract
This article provides two-year research results in various crop rotation systems, including resource-saving nutrition for alfalfa yield, cultivated in condition of long-term use of mineral and organic fertilizers in field crop rotation. Significant positive effect of all fertilizer systems is established, both indirect and in the aftereffect of phosphorus, on the yield indicators of alfalfa hay has been established. At the same time, particularly noticeable increase in the collection is observed in organo-mineral, double-mineral, as well as in the case of using one and a half mineral system with phosphorus aftereffect for alfalfa. A fairly significant increase in the yield of alfalfa hay occurs with the resource saving of phosphorus against the background of the systematic introduction of a one and a half norm of phosphorus in previous years together with a full dose of nitrogen and potassium, as well as with the regular use of complete double mineral, organo-mineral mixture with one manure
Keywords
References
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