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This experiment was conducted to investigate the physical or chemical effects of media compositions of several domestic organic materials on the growth of Ficus benjamina using rice straw, rice hull, saw dust, and peanut hull with 1 %, 2% and 4% H₂O₂ or 10% Ca(OH)₂ with or without paddy field soil in volume, respectively. A better growth of Ficus benjamina was shown in Ca(OH)₂ or H₂O₂ treatment than nontreated, and the saw dust was also good for the growth but peanut hull was not beneficial. Pot soil containing paddy field soil was better for the growth than the pot soil without the paddy field soil. A negative correlation was shown between plant height and porosity of pot soil while a positive correlation was shown between plant height and the bulk density. The leaf number was negatively correlative to pH, P₂O_5 and K of the pot soil. The optimum pot soil for the growth of Ficus benjamina was shown to have 0.8-1 g/mL of bulk density, 50-60 percent of porosity, 5.5-6.0 of pH, 20-25 me/100 g of CEC, 500-600 ㎎/L of phosphate and 1-2 me/100 g of magnesium. The saw dust, rice straw, and rice hull treated with H₂O₂ and saw dust treated with Ca(OH)₂ were proved to be good composts as the heavy media. As for light media carbonized chaff, rice hull (H₂O₂), saw dust (Ca(OH)₂) and peanut hull (Ca(OH)₂) were proved to be proper composts with mixed ratio of 2 : 3 : 2 : 3.
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