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This research examined an optimum ratio for co-producing plant pot from organic residues. Raw materials were used to produce plant pot are local materials: coffee ground, lime from shell and rubber wood sawdust. The objectives aimed to investigate the physical and chemical properties of raw materials, the optimum ratio of raw material and binder for plant pot forming. The ratio of coffee ground:lime from shell:sawdust of 3:0:0 3:0:0 0:3:0 0:0:3 1.5:1.5:0 1.5:0:1.5 0:1.5:1.5 and 1:1:1. Researchers used pasty glue as binder. Each experiment was formed with ratio of raw material:binder of 1:0.70 1:0.85 1:1 1:1.15 1:1.30 1:1.45 1:1.60 1:1.75 และ 1:1.60. Researchers were formed plant pot with automatic potting presses using potting pressure range of 1,600-1,800 psi. The results indicated that raw materials include essential nutrients for plant and organic matter (OM) and. So, they can be used as raw materials in the production of plant pot. The result of plant pot forming shown that the ratio of coffee ground:lime from shell:sawdust of 1.5:1.5:0 can be formed better than another ratio. It formed in range of raw material:binder 1:0.70 to 1:1.75. The production of plant pot from organic residues is the alternative that added value to residues and produced the environmentally friendly product.
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