GUANDU SUPPLEMENTATION TO SUGARCANE AS SUBSTRATE FOR CULTIVATION OF PLEUROTUS SP. FLORIDA

Guandu supplementation to sugar-cane as substrate for cultivation of P leurotus sp. 'Florida' was done to evaluate the speed of mycelium grow th in darkness and in continuous light, and to evaluate the average my celium growth time, production, productivity and biological efficiency under continuous light. The minimum and maximum temperatures register ed were 22 degrees C and 26 degrees C. The air humidity was 73%. The s ubstrates consisted of sugar-cane supplemented with guandu at 5%, 10% and 15%. The control treatment was sugar-cane with no supplementation. The speed of mycelium growth was stimulated by light. The guandu supp lementation did not influence the speed of mycelium growth in light. I n darkness, the greater speed of mycelium growth was observed at 5% of supplementation and in the control treatment. The average mycelium gr owth time was shorter with 5% of guandu (6.18 days), while the product ion (165.94 g fresh mushroom/kg fresh substrate) and biological effici ency (94.73%) were higher with 15% of guandu. The productivity was sim ilar among treatments (5.58% to 6.82%).