Production and storage of N-enriched co-compost

Abstract

Recovery of the organic fraction of municipals waste for peri-urban could contribute to the improvement of environmental sanitation and increase agricultural productivity in Sub-Saharan Africa. However, municipal waster co-compost (Co) has how nitrogen. Therefore, this study investigated the type of form of inorganic N fertilizer of this N-enriched product under storage. To attain 30,000 mg kg-1(3%) N content, different amounts of urea or ammonium sulphate were applied in various forms (dry paste and liquid) to enrich Co. The production termed colizer was stored and its moisture, pH total nitrogen, NH4-N2N1-N1 and C/N ratio were monitored under ambient conditions for two years. In the first four months of storage, total N content of 50kg Co + 3.26kg, urea (CoUI) increased from 31.333 to 54,000 mg kg-1 and 50 kg Co +7.14kg (HH4)2 SO4 (CoASD) from 35.333 to 52,000 mg kg-1. At the end of two year of storage, the initial N content of CoUD and CoASD decreased by 4% and 24% respectively. Based on these results, is recommended that dry (NH4)2SO4 should be used in N enrichment of Co and that the comlizer should be stored in seated bags but not more than four months.