Purpose The main purposes of the study were to assess the NPK fertilizer value of biogas digestates in diferent soils and to evaluate the risk of unwanted nutrient leaching. Methods The fertilizer value of digestates from anaerobic digesters was investigated in a greenhouse pot experiment with wheat in three diferent soils; silt, loam and sand. […]
Purpose An experiment was designed to introduce a substitute for peat, which is used in the production of bedding for the cultivation of ornamental plants and is imported and expensive. For this reason, the usability of peanut shells and Azolla, whose accumulation in the environment causes environmental problems, is a major research question. Methods In […]
Purpose Improper management of poultry feather (PF) leads to various environmental problems. Biodegradation of PF using Streptomyces sp. was initiated to recover N because PF is rich in keratin protein which is difficult to break down. Methods PF was collected, washed, chopped, and was transferred to plastic pots (200 ml each containing 30g PF). Streptomyces […]
Purpose This study performed a feasibility assessment of nitrogen enrichment by some organic wastes through vermicomposting as well as its release as a bioavailable form over time. Methods Soybean and canola wastes as well as the dairy blood powder of industrial slaughterhouse were used as organic wastes to enrich the vermicompost. Composted materials were incubated […]
Purpose The leather industry produces huge quantities of proteinous solid wastes and is being dumped or improperly utilized resulting in economical losses or causing an environmental problem. An efficient, low-cost procedure was developed to convert animal fleshings into plant growth promoters (PGP). Method The fleshings were hydrolyzed and analyzed for moisture, fat, ash, and nitrogen […]
