As the previous post here showed, Organic N, then, is different. It just sits there in the store, alive with micro-organisms and giving some (but very low losses) to the soil atmosphere and groundwater. However, it is different in a staggeringly complex and important way. When conditions favour both plant and fungi, the mycorrhizae feed at one end of their hyphae on the organic matter and the other end of each hypha either crosses the root hair wall into the plant body, or wraps round the root hair (much like the placenta of a mammal). This is a closed conduit! Not only is this why natural ecosystems do not leak nutrients and pollute the ground water, they also feed the plant with complex molecules, already some way down the route for forming cellulose and amino acids – so accelerating growth. Even more staggering, these mycorrhizae can suck nutrients out of some plants (weeds?) and transfer then to others (crops?).
There is enough urban waste in the world to supply enough nutrients to feed the world – without manufacturing fertilisers. (But we do actually need both.)
See the next blog in this series for more on profitable, eco-mimic fertiliser mechanisms and also “Survival” by bill Butterworth, published on Amazon.
Bill Butterworth, Land Research Ltd, 29 May 2018