Utilização de resíduos da produção avícola na produção de composto organomineral e seu uso na lavoura de soja

The present work analyzed the reuse of poultry waste in the production of organomineral fertilizer and its use in soybean cultivation. To produce the fertilizer, waste generated by poultry farming was used, consisting of poultry litter, sweeping from the feed factory and carcasses of dead animals that went through the composting process. The composts from birds killed in the industrial broiler breeding process were placed in masonry pens, measuring 2.5 m wide, 2.5 m long by 1.8 m high in a 195 m long shed. 12.5 m wide, entirely closed by a 2.5 cm mesh screen and the roof made with fiber cement tiles. After 5 months, this material from the composting pens was transformed into organomineral fertilizer. This fertilizer was used in a field experiment in soybean crops. Different amounts of organomineral fertilizer designed in the form of randomized blocks (DBC) were tested with five fertilizer treatments using organomineral: T1 - Control, T2 - organomineral fertilizer at a dose of 2.5 ton/haˉ¹, T3 - organomineral fertilizer at a dose of 5 ton /haˉ¹, T4- organomineral fertilizer at a dose of 7.5 ton/haˉ¹ and T5 - organomineral fertilizer at a dose of 10 ton/haˉ¹. The parameters evaluated were: plant stand, root length (cm), fresh root biomass, shoot length, fresh shoot mass, leaf analysis, internode length, weight of 1,000 grains (g), number of pods per plants, number of grains per pod, final size, green and final dry biomass, grain productivity (kg/haˉ¹). Organomineral fertilizer proved to be a great option when produced by poultry farmers for their own use in their soybean crops and is more advantageous from a financial point of view. In this case, the application of 7.5 tons/haˉ¹ is the dosage that offers the best cost-benefit for the farmer with a production of 5,352 kg/ha.