Produção de fertilizante organomineral: baseado na associação de resíduos orgânicos e fertilizantes minerais

Abstract

The present work aims to study the production of an Organomineral Fertilizer from residential and agricultural waste. The controlled decomposition of the residues results in the production of organic fertilizer, a process carried out by the composter with biostabilization control and in boxes, associating the residues of in natura corn silage, chicken litter from aviaries and organic residues. Mineral fertilizers are added to organic ones so that they can have the availability of micro and macro nutrients for the plants. In composting, about 7.4kg of organic fertilizer was obtained, with NPK contents respectively, 2.2-4.05-13.63 in grams for a 100g base, and the mineral fertilizer formulation for complementation is 3 ,37-3,37-3,37, consequently obtaining the macronutrient contents within the proposed by the Brazilian regulations governed by the Ministry of Agriculture, Livestock and Supply (MAPA). A total period of 99 days of composting was obtained, and the pH found in the organic matter was 6.87, which indicates that it had already been biostabilized. The production on the organomineral fertilizer generated a cost of around 2 reais per kg, a value that can change according to the values of the raw materials used.