Circular Fertilisers for Glasshouse Horticulture
The goal is to solve problems in the transition of linear (chemical) fertilisers into circular fertilisers for Dutch greenhouse horticulture, using the unique technical and economic context of Dutch greenhouse horticulture. This is realised while paying attention to technical, economic, and societal limitations. The result is a 10% replacement of the present-day use of linear fertilisers in fruit vegetables and cut flowers and a 50% replacement of the present-day use of linear fertilisers in container plant production within five years after the project. This is realised by developing circular soluble fertilisers to allow the continued use of drip irrigation technology in high tech cultivation systems; by biobased and biodegradable coatings to make slow-release circular solid fertilisers for mid tech cultivation systems; and by developing the application technology for fertiliser sludges in low tech cultivation systems. A hybrid use of the above systems is tested for its potential as a growing media-based cultivation system with the additional potential to qualify for the EU bio-label or similar certificate. The impact of the project is that greenhouse horticulture:
a) Will reduce the use of linear (chemical) fertilisers from 82.500 to 72.500 ton/year (12%) in 2030 with the potential
to reach 50% before 2040.
b) Will become a publicly visible part of the new circular economy for consumers and authorities.
c) Will have an appealing and proven story for customers.
d) Will be an example of relevance for sectors with similar use of fertilisers (fruit and tree cultivation).
e) Will be able to ask authorities for specific adaptations in legislature regarding circular fertilisers on all three
f) Will help other sectors solve problems with the re-use of plant and animal residue.