FIELD: agriculture.
SUBSTANCE: invention relates to agriculture, in particular to agricultural chemistry, and can be used for cultivation of Hungarian sainfoin. Mineral water is used for top-dressing in an amount of 200-250 l/ha in mixture with micronutrients. Top-dressing of plants is carried out by spraying the crops after cutting with mineral water "Zamankul", which is heated to 60-80°C, dissolving in it of sulfate cerium in an amount of 0.01-0.02% of the total volume of water.
EFFECT: simplified method of top-dressing, increase in yield of green mass of sainfoin, protein and nitrogen-fixing ability.
1 tbl, 3 ex
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