PREPARATION AND PROPERTIES OF ORGANO-MINERAL FERTILIZER WITH PROLONGED ACTION, BASED ON THE ABIES BARK
UDC 631.879:631.859
Abstract
The method of preparation of organo-mineral fertilizer with increased resistance to mineral components leaching by water, based on the impregnation of support from abies bark by water solution of potassium nitrate, zinc, copper and magnesium sulphates, was proposed. The dates about composition and properties of the porous support from abies bark were provided. The potassium nitrate contents (23.5 mass.%) and concentration of nitric acid solution (0.1 N) providing high water resistance of fertilizer were determined. I t was shown, that application of treatment by 0,1 N nitric acid allows reduce delete from fertilizer by water nitrogen in 2.4 times, and other mineral components – in 1.7–1.9 times. The ability of fertilizer to slow release of mineral components by water during long time was identified, that determined effect of his prolonged action. It was shown, that after treatment fertilizer by water at room temperature during 30 days from him leaching 64.8% potassium, 66.6% nitrogen, 70.3% magnesium, 65.2% copper и 65.3% zinc from their initial contents. The growth-stimulating effect of organo-mineral fertilizer based on the abies bark was shown by experiments on germination of wheat seed variety "Novosibirskaya 15".
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