ORGANIC NITROGENOUS FERTILISER

摘要

Organic nitrogenous fertiliser in liquid or granular form comprising a mixture of untreated or granulated horns and hoofs of beef-cattle with moisture content of up to 20 mass per cent and with 18 mass per cent of organic bound nitrogen of proteinaceous character. The size of the horn and hoofs granules of beef-cattle is from 0 - 12 mm. The method of obtention of the granular or liquid fertiliser according to the invention by means of bringing the horn and hoof mixture into a container, for example a reactor, followed by the addition of 100 % potassium hydroxide (KOH) into the mixture at mass ratio min. 1:2 and of 200 litres of water. The contents are then left in the lye bath to react or are heated until melting to be posteriorly neutralized by addition of 50 litres of 85% orthophosphoric acid. After neutralisation is achieved, the final mixture can be enriched with other nutrients, such as NO3, Mg, Fe, Co, B, Mn, Mo, Zn, Cu. The solution is finally brought into a final volume of 1000 litres with water.