Evaulation The Quality Of Compost From Vegetable Waste With Sawdust And Poultry Manure

This experiment was conducted at Aware TVET to investigate the changes in the principal physico-chemical properties of composting vegetable wastes from fresh vegetable market with locally available amendments.To achieve this objective vegetable wastes having C:N ratio of 36.5:1and moisture content (about 78%), were composted with sawdust having a high C:N ratio of 49.7: and poultry manure having a low C:N ratio of 11.7:1, at various treatment composition. It was expected that the amendment material combined with vegetable wastes would compensate for the high moisture and adjust the C:N ratios in the vegetable wastes to improve conditions to initiate microbial activity and enhance the rate of composting. Totally Four small bins with three replicates each and have a size 3m x 1m x 0.5m were used as treatment 1, 2,3 and 4over 90 days. Treatments were evaluated throughout the experimental period for parameters, such as temperature, pH, volatile solids, moisture content,volatile and C/N ratio. Moreover, additional parameters like average elemental concentrations (nutrients and metals) and germination index for each treatment were determined at the end of the composting. During the process thermophilic temperatures (> 40°C) were reached after 18 days of pilling in all treatments, where as the highest mean temperature (> 55.6°C) and early maturation was recorded in T2, and the lowest maximum temperature (

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