In modern agriculture. the use of organic fertilizer becomes more popular because it contains elements of natural nutrients such as N. P. K. Ca. Mg. which is needed by the soil for the growth of a plant Organic fertilizers are derived from the woste of untapped Acacia bark. To take the advantage of Acacia mangium bark waste a study of organic fertilizer is carried out in order to find out the best composition of organic fertilizer from the waste. The result showed that the best composition of organic fertilizers based on elements of fertilizer .treatment in the market is the treatment of acacio wood with bran and goat manure (A3).
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