Bacillus polymyxa takes released (NH4) from Protozoan and Nematodes. It digests it and produces NO2. Bacillus polymyxa is important in established older gardens where there is a higher count of Protozoan and Nematodes. It fixes nitrogen from NH4 as part of the predator/prey nitrogen cycle. Download paper (.pdf) Click here to learn more?
This is one of the more tricky and interesting Nitrogen Fixing Cycles. The Ammonium comes from the nitrogen eaten of bacteria by nematodes. By default, bacteria bodies have a C:N ratio of 5:1. Bacteria have a very narrow split between Nitrogen and Carbon. Nematodes have a C:N ratio of 100:1. The split between the Nitrogen [...]