THE POTENTIAL USE OF CRUDE PALM OIL WASTES TO IMPROVE NUTRIENT LEVELS IN VEGETABLE PLANTSHASAN BASRI JUMIN, T. ROSMAWATY, AHMAD FAJRI, ANTRI KUATNO, ALVIAN ABARA, ERNITA, SELVIA SUTRIANA, MAIZAR AND M. NURAbstract Application of crude palm oil waste combined to suitable concentration of benzyl-adenine give the significant effect to mean relative growth rate of vegetable plants and the same pattern in net assimilation rate crude palm oil waste has also significantly increased during 28 days old plants. Combination of treatment of suitable concentration of crude palm oil and benzyl adenine increased the growth and production of vegetable plants. The relative growth rate of vegetable plants was rapid 3 weeks after planting and gradually decreased at the end of the harvest time period. Combination of 400 mg.L-1 CPO with 1.0 mgL-1 till 10 mgL-1 BA increased the Mean Relative Growth Rate (MRGR), Net assimilation rate (NAR), Leaf area and dry weight of Brassica juncea, Brassica oleraceae and Lactuca sativa.
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