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I'm on my second flush with 5 bags and have picked 37 lbs thus far. One of my bags has had a few bouquets with some funny brown areas. I would say that it is from lack of moisture but the RH has been kept between 90 and 95% and the temp at 69-70F. Anybody have any ideal what would cause this? These are Pleurotus ostreatus.
Great looking mushrooms... I think you might have an internal contaminant- virus or otherwise. I'm just guessing, as I don't grow oysters. 37 lbs is great! do the spots change size or shape as the mshrooms develop?
The bags are made from 16-inch flat 4 mil plastic tubing. Cotton seed hulls were used for substrate. Each bag contains 15 lbs dry weight of cotton seed hulls with the PH adjusted to 8 with hydrated lime. The substrate was pasteurized at 160 F for 1 hour. After 1 hour I removed the substrate from the barrel of water and put it in a large plastic tote with holes in the bottom to drain and cool. After cooling the substrate was inoculated at a 7% ratio to dry weight. In other words I used 16 ounces of grain spawn to 15 lbs dry weight of substrate.
The bags were then sat on a shelf in my spawning area in the basement with RH at 90% and ?internal? bag temp was kept at 80 F for about 10 days. Day 10 the bags were removed to the growing area and hung from the ceiling where the have lots or circulating air and RH of about 95% +/- Day 13, the bags were all pinning and by day 17 I began picking. Day 17 ? 20 I picked a total of 27 pounds. I had a few days there where I had trouble regulating the temp and things seemed to all dry up.
At that point I shot all 5 bags up with a turkey needle and water and 2 days later they began pinning again. Since they begin pinning again I have picked another 10 lbs and there are still several more still growing.