Black King Oyster harvest today. Some stats about this harvest:
I spawned 1lb of colonized grain to 10 lb bags of sawdust/soy hull gourmet substrate (thanks
for supplying!) on 02/19/2025. That means it took 37 days for these. Probably half of that time it was colonizing, half it was in the fruiting tent.
After pulling the mushrooms off of the block the total weight was: 4.716kg
I trimmed up these mushrooms to remove less desirable parts: Good looking mushrooms: 3.506kg Compost pieces: 1.21kg
So about 75% yield there. Which could definitely be improved by me harvesting at a better time, and maintaining better environmental conditions.
There is something in mushroom growing called "biological efficiency" (BE) which tells you how well you did. Each species of mushrooms has a range of acceptable values here.
Biological Efficiency = (Fresh Mushroom Weight / Dry Substrate Weight) × 100% Biological Efficiency
-> (3.506 kg / 5.443 kg) × 100% Biological Efficiency = 64.4%
I did the calculations based on a couple of difference dry substrate weights, which gave me a BE of 48.3% to 77.3%.
This is lower than the ideal (100-150%), but also my execution wasn't really ideal either. Its good to get this all written down so that next time around I have a goal to beat!
https://learn.freshcap.com/growing/mushroom-yield-and-biological-efficiency/
#mushrooms #mushstr #grownostr #science #math
