COMPLEX FERTILIZER WITH HUMIC SUBSTANCES AND METHOD OF APPLICATION

摘要

The invention relates to a complex liquid fertilizer with humic substances, for extra-root application, by foliar or radicular spraying, by incorporation into the soil, fertigation, drip irrigation and to a method for applying the same. The claimed fertilizer comprises 152.2...271.8 g/l total nitrogen, of which 139.4...147.2 g/l as amide, 6.2...66.9 g/l as ammonia and 0...65.5 g/l nitrate, 10...35 g/l phosphorus pentoxide, 5...40 g/l potassium oxide, the microelements iron, copper, zinc, magnesium, manganese, boron, sulphur as SOin a concentration of 5.5...28.3 g/l and 12.8...22.7 g/l organic substances of which 3.3....10 g/l humic substances, being obtained by introducing it into a matrix of NPK type, resulting by the neutralization of the phosphoric acid with potassium carbonate/hydroxide, using urea, ammonium nitrate and/or ammonium sulphate, respectively, as nitrogen source, and by adding a solution of microelements: iron, copper, zinc, manganese, magnesium, boron, chelated with disodium salt of ethylenediaminetetraacetic acid and citric acid and a potassium humate solution. The claimed method consists in that the product is administered as an aqueous solution of a concentration of 0.1...10 % in an amount of 200...10 000 l/ha, in 2...3 treatments, depending on the process of foliar or radicular fertilization, the crop type and the plant vegetative stage, and in a dosage of 50...300 l/ha at the radicular application by incorporation into the soil.