Bacillus subtilis
Top answer
From the KNF library
Cho's texts describe Bacillus subtilis with rice straw. One way to collect it: spread straws thinly between rice stumps, lay hard-cooked rice over them, and cover with more straws. (Cho, Theory, p. 50)
Cho says this is less effective than collecting straight from the stumps. (Cho, Recipe, p. 10)
Cho also covers a rice bran IMO pile with straws. He says that creates favorable conditions for useful microbes in rice straws, Bacillus subtilis among them. (Cho, Theory, p. 55)
Drake says the white mycelia on rice in a seed IMO basket is Bacillus subtilis. (Office Hours Ep. 44, 19:05) So the microbe shows up on cooked rice as well as on straw.
Drake has also described chicken bedding of chopped hemp bast with IMO, LAB, and biochar. (Office Hours Ep. 89, 10:30)
The library does not say whether Guinea grass, or any grass other than rice straw, grows Bacillus subtilis. It also does not cover fermenting it in chicken bedding.
Sources
- 19:05 Office Hours Ep. 44 (Aug 2022) — LAB Troubleshooting, Bacillus Subtilis Probiotics, Fish Amino Acid · “Like when you get that white, nice mycelia on top of your rice in your basket, that's bacillus subtilis.”
- 10:30 Office Hours Ep. 89 (Aug 2023) — No-Smell Chicken Floor, Garlic Tincture for Bean Beetles, Manganese · “Chopped hemp bast bedding with IMO, LAB, and biochar has a slight odor near the ground”
- p. 10 Cho, Recipe · “This method is less effective than the first one explained above.”
- p. 50 Cho, Theory · “spread straws thinly between rice stumps. Place the hard-cooked rice over the straws and then cover them with more straws.”
- p. 55 Cho, Theory · “it creates favorable conditions for useful microbes in rice straws, e.g., Aspergillus oryzae, Bacillus subtilis, etc.”
