A high share of the nitrogen (N) in recycled and other organic fertilisers is not in a form available to plants and needs to be mineralized before plant uptake. This makes the effect on yields less predictable.
Solution
Evaluating recycled fertilisers regarding their nitrogen efficiency compared to mineral fertilisers can help estimate the amount of N they supply to the plants and, therefore, their effect on yields.
Description
Experiments showed higher N efficiencies for stored human urine, digestates and sewage sludge than compost. Additionally, higher contents of ammonium-nitrogen (NH4+-N) and a lower C/N ratio increase the nitrogen efficiency of recycled fertilisers.
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.
Disqus
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.
Activate