METHOD TO OBTAIN NUTRITIVE SOLUTIONS CONTAINING MICROELEMENTS (MICROVIT) Russian patent published in 2002 - IPC

FIELD: agriculture. SUBSTANCE: the method introduces an acidic component into hot water followed by addition of microelements' salts into acidic solution obtained. Citric acid is used as an acidic component, then it is supplemented with a solution of oxyethylenediphosphonic acid sodium salt at 1: (0.4-0.7) ratio, correspondingly. At pH being 1.5-2.3, while mixing, ferrous and manganese sulfates are added till complete salts' dissolving is achieved. Obtained solution is supplemented with ammonium- or potassium-containing component to reach solution pH to be about 2.4-3.5. Then nonorganic salts of zinc, cobalt and molybdenum are added by mixing till their complete dissolving is achieved, then copper and magnesium sulfates are added, then - boric acid. The temperature should be maintained at 75- 90 C level. As ammonium-containing component one should use either ammonium citrate or ammonia solution, as potassium-containing component - potassium carbonate or potassium hydroxide, as nonorganic zinc salts one should take zinc sulfates, as nonorganic cobalt salts - cobalt sulfates or nitrates, as molybdenum salts - ammonium molybdate. The method enables to obtain nutritive solutions which contain microelements of two types mixed with macroelements. All the microelements are water-soluble and of a high biological activity. EFFECT: higher efficiency to conduct root and leaf feeding either with macrofertilizers or independently. 2 cl, 2 ex, 1 tbl