ABSTRACT The composting of waste from a broiler chicken production chain (BCPC) promotes the mitigation of environmental impacts and allows the commercialization of compost as an agricultural input. Both the characteristics and the potential for use of the final compost depends on the operational conditions during composting. The objective of this study was to evaluate the use of organic compounds generated fro...
ABSTRACT The recovery of waste from the broiler production chain (BPC) is consistent with the principles of a circular economy. Besides turning waste into organic compost, its use as substrate for the production of vegetable seedlings further increases its economic value. However, it is necessary to adapt its characteristics to enable its use as substrate. To this end, the addition of boiler remnant charcoal wa...
ABSTRACT The quality of the carbon used as bulking agent in the composting process directly affects the dynamics of the waste degradation, which is governed by an active and diversified microbiota. The monitoring of the basal respiration and enzymatic activities during the composting of broiler agro-industrial wastes with different carbon sources as bulking agents was the aim of this study. The microbiological ...
ABSTRACT Aiming to evaluate different wastewaters in the anaerobic co-digestion (ACoD) of hatchery wastes, a batch test was conducted in bench horizontal digesters. At the end of the process, the potential production of biogas and methane was calculated as well as the chemical composition (macro- and micronutrients) of the effluent and the concentrations of methane and carbon dioxide gas at 60 days. The monitor...
RESUMO O uso de água residuária em solo agrícola pode-se caracterizar como uma fonte alternativa de adubação, além de melhorar as condições edáficas do solo devido à matéria orgânica adicionada. Neste contexto, este trabalho teve por objetivo avaliar os efeitos na cultura do milho e em Latossolo Vermelho distroférrico típico, devido à aplicação de água residuária de suinocultura associada com adubação química. ...
Objetivou-se, com este trabalho, determinar o desempenho dos substratos alternativos no desenvolvimento radicular e na parte aérea da beterraba e do repolho, tal como no seu comportamento no campo em consórcio e monocultivo. Foram realizados dois experimentos em blocos casualizados cujos tratamentos foram: T0 (substrato Plantmax®); T1 (100% de composto); T2 (50% de composto, 20% de areia, 20% de casca de arroz ...
The management of composting may influence the characteristics of the produced compounds. The experiment used three frequencies of plowing, combined with the conditions: with and without coverage of the composting patio, with and without the use of commercial inoculant, resulting in 12 furrows, installed on the Experimental Center of Agricultural Engineering (NEEA), of the STATE UNIVERSITY OF WEST PARANÁ (UNIOE...
Physical and chemical characteristics of manure are modified by different animal production systems. In cattle feeding system for young bulls there is an inversion of the proportion between forage and concentrate. In other words, the animals receive a smaller amount of forage compared to the traditional system. These changes in the manure characteristics involve changes in the treatment systems. The aim of this...
Objetivou-se, neste trabalho, avaliar o desenvolvimento das mudas de almeirão em diferentes substratos orgânicos e verificar o comportamento em bandejas, após o transplante no campo e na pós-colheita, constituindo três experimentos. Foram avaliados o uso do substrato comercial e quatro misturas de proporções de composto, areia e pó de basalto. Foram quatro fases de avaliação: aos 13 e 26 dias após a emergência ...
O sistema plantio direto (SPD) é uma técnica eficiente no controle da erosão do solo porém alguns estudos indicam a ocorrência de compactação, principalmente na camada superficial. Estratégias que elevem o teor de matéria orgânica, como a rotação de culturas e a adubação orgânica, podem ser utilizadas para resolver este problema. O objetivo do trabalho foi avaliar o efeito de sistemas de manejo (rotação e suces...