On many organic farms, especially those without livestock,
phosphorus (P) exports through the sale of produce is
greater than P imports through fertilisers and purchased
animal feed. While soil P reserves from residual fertiliser
applied before conversion to organic farming can often deliver
P for decades, mining of soils is unsustainable in the
long term.
Solution
Many bio-resources, such as digestates and composts, contain
P from various organic wastes. Wastewater treatment
plants are a major sink for P as well. There are many options
under development to recycle P from these waste
streams. Some are already permitted in organic agriculture.
Description
Closing nutrient cycles is at the core of organic agriculture.
Replenishing soil P reserves will prevent deterioration of
soil fertility and sustain good productivity.
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In order to use the comment function, you must register with the third-party provider "Disqus".
When you activate this function, your browser establishes a direct connection with the servers of the third-party provider. We would like to point out that data is transmitted to the third-party provider after activation, and the latter may set cookies that can also be used for analysis and marketing purposes. For more information, please refer to our privacy policy.
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