METHOD OF PREPARING A FILM-FORMING BIOPOLYMER MODIFIER FOR MINERAL FERTILIZERS Russian patent published in 2024 - IPC C05G3/40 C05G5/12 

FIELD: agriculture.

SUBSTANCE: method of preparing a film-forming biopolymer modifier for mineral fertilizers is characterized by that a weighed portion of maize starch weighing 6 g with addition of 10 % CuSO₄⋅5H₂O is dissolved in 60 ml of distilled water, then 5 ml of glycerine and 5 ml of 70 % acetic acid are added to the mixture, the solution is mechanically stirred at temperature of 75-80 °C in a three-necked round-bottom flask equipped with a thermometer, in a water bath for 10 minutes until conversion into a thick suspension, then, to ensure homogeneity of the solution, 5 ml of 0.1 M NaOH solution is added, the ready film-forming solution is applied on the surface of the granules of mineral fertilizers, followed by drying.

EFFECT: invention makes it possible to restore soil by content of microelements, to increase assimilation of mineral elements of the used fertilizer, to increase crop capacity, as well as quality of fertilizer.

1 cl, 3 tbl, 1 ex