COMPLEX FERTILIZER WITH HUMIC SUBSTANCES AND METHOD OF APPLICATION

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. Invenţia se referă la un fertilizant complex, lichid, cu substanţe humice, cu aplicare extraradiculară, prin pulverizare pe frunze, sau radiculară, prin încorporare în sol, fertigare, udare cu picătura şi la o metodă de aplicare a acestuia. Fertilizantul conform invenţiei este constituit din 152,2...271,8 g/l azot total, din care 139,4...147,2 g/l sub formă amidică, 6,2...66,9 g/l amoniacală şi 0...65,5 g/l nitrică, 10...35 g/l pentaoxid de fosfor, 5...40 g/l oxid de potasiu, microelementele fier, cupru, zinc, magneziu, mangan, bor, sulf, ca SOîn concentraţie 5,5...28,3 g/l, şi substanţe organice 12,8...22,7 g/l, din care 3,3...10 g/l substanţe humice, fiind obţinut prin introducerea într-o matrice de tip NPK, rezultată prin neutralizarea acidului fosforic cu carbonat/hidroxid de potasiu, folosind ca sursă de azot uree, azotat de amoniu şi/sau, respectiv, sulfat de amoniu, şi adăugarea unei soluţii de microelemente fier, cupru, zinc, mangan, magneziu, bor chelatate cu sarea disodică a acidului etilendiaminotetr