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Abstract
The study's purpose was to grow polypore mushroom (Trametes versicolor (L.) Lioud (1920)) from available materials at A Luoi using sawdust from Acacia auriculiformis A. Cunn and to compare two planting sites, A Luoi and Hue city. The experiment included four treatments and was conducted in two locations, A Luoi and Hue City, using two types of rubber wood sawdust and acacia wood sawdust. The results showed that the growth and development time on acacia wood sawdust was approximately 3-4 days shorter than that on rubber wood sawdust. Polypore mushrooms grown in A Luoi were larger in length and diameter of fruiting bodies, measuring 1.01 - 1.06 cm and 0.93 - 1.51 cm, respectively, than those grown in Hue. Therefore, the productivity is higher from 2.46 - 3.47 grams/kg of raw material and the economic efficiency is higher, ranging from 2,776,000 to 3,968,000 VND. Pb and Cd content in acacia wood sawdust reached 41.21 mg/kg and 1.42 mg/kg, respectively, Pd content in polypore mushroom fruit body ranged from 0.010 to 0.013 mg/kg and Cd content ranges from 0.040 to 0.052 mg/kg. Thus, polypore mushrooms grown in A Luoi grow and yield more than those grown in Hue city, and polypore mushrooms grown on sawdust acacia leaves grow and yield similarly to those grown on rubber wood sawdust. The heavy metal content (Pb and Cd) in rubber wood sawdust and acacia acacia wood sawdust, as well as the fruiting body of polypore mushroom, was found to be within the allowable safe range.