Potential of Vermicompost Produced from Local Orchid Waste
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Abstract
The aim of this research was to determine the feasibility of digesting orchid flower-containing substrate, which is community waste by Eudrilus eugeniae. The Completely Randomized Design (CRD) was used with 4 treatments and 3 replications. The treatments consisted of: 1) control (cow dung: coconut coir fiber at the ratio of 2:1), 2) cow dung: orchid flower at the ratio of 2:1, 3) cow dung: coconut coir fiber: orchid flower at the ratio of 2: 0.5: 0.5 and 4) cow dung: coconut coir fiber: orchid flower at the ratio of 2:1:0.5. The experiment was conducted for 50 days, and the results showed that treatment 2 contained the highest total nitrogen, phosphorus, pH and electrical conductivity (EC) (2.10%, 0.89%, 6.82 and 4.65 (dS/m), respectively) (p < 0.05). Treatment 4 gave the highest total potassium (0.98%) (p < 0.05), while treatment 3 gave the highest organic carbon (OC) and organic matter (OM) with the percentage significance (p < 0.05) for 24.56 and 42.24%, respectively and the average of C:N ratio was not difference (p < 0.05). Treatment 1 gave the highest product of vermicompost than other groups (p < 0.05). Moreover, E. coli and Salmonella spp. did not appear in the vermicompost from all treatment. From all results, it showed that the orchid flower could be used as bedding material to feed earthworms with the suitable ratio of cow dung: coconut coir fiber: orchid flower at 2:1:0.5.
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