This research purposes to determine the appropriate ratio of palm oil sludge residue. For use as a supplement to Hungary oyster mushroom. And yield of oyster mushroom cultivation with the Hungarian oil palm waste sludge ratio is different. The waste sludge is a waste product in the palm oil production process crude palm oil (CPO) to use a combination of renewable raw materials for the production of oyster mushroom believed Hungary. The experiment consisted of six treatments with a mixture of sawdust and waste sludge palm oil at different weight ratio is 100: 0 (control), 95: 5, 90: 10
85: 15 and 80: 20 basis. No. compare the growth rate of the fiber and weight. During the period of two months, the results showed that the growth of fiber believed before the mushrooms out of a series of experiments with a mixture ratio of 95: 5 is the growth of fiber than other treatments that are mixed meal salad. a palm oil, but less than the control. During the production of mushroom trial is the most productive. Ratio of
95: 5 and weighs more than the control. The optimum ratio for its use.