Re:Sri Lanka’s overnight flip to organic farming has led to ...
by ceejayoz on Tuesday September 07, 2021 @12:27PM
(#28446663)
> The mass of biologically available nitrogen, and phosphorus in the harvest is equal to the mass of nitrogen, and phosphorus removed from soil.
This is simplistic to a fault. Legumes, for example, fix nitrogen; we've known for thousands of years about crop rotation.
Runoff and erosion - processes that tend to be sped up by industrial farming techniques - cause phosphorous depletion in a way not due to the harvest itself, as well.
There are a lot of factors in soil depletion. Some are under our control, via different farming techniques, changes in density, etc.
This is simplistic to a fault. Legumes, for example, fix nitrogen; we've known for thousands of years about crop rotation.
Runoff and erosion - processes that tend to be sped up by industrial farming techniques - cause phosphorous depletion in a way not due to the harvest itself, as well.
There are a lot of factors in soil depletion. Some are under our control, via different farming techniques, changes in density, etc.