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View challenge: C-7130-0102 - Cost effective slow release fertilizer granules
Our client is seeking a cost effective additive to affect slow release of plant nutrients over weeks or months (<2) from partially/wholly spherical fertilizer granules.

Background:- In the face of resource scarcity and environmental concerns, accurate fertilization is a clear direction to head for a leading fertilizers company. One of the ways to achieve that is by slowing down the release rate of nutrients for longer availability in the rhizosphere. We are seeking to apply this on standard fertilizer granules, 1.4-4.5mm in diameter. These can either be spherical or pseudo-spherical. As the required cost is extremely low, we are willing to consider a lax release profile, where the majority of the release will happen over weeks or months (<2), but some may be before, and some after this period. It is important to prevent the accumulation of salt over a certain level in the rhizosphere at any given time as this stresses the plant. For the same purpose of allowing a low cost product we are seeking to integrate the new material in existing processes which is the reason for the requirement to apply the additive by spraying. In addition to spraying over already granulated fertilizers, we are open to adding the suggested material during the compaction process.

Our criteria:-

Cost of material below 20 $/ton of fertilizer
Liquid in application by spraying (e.g. melting point <50C, coagulation point 40-50C)
High adhesion to spherical and non spherical 1.4-4.5mm fertilizer granules
Minimal separation from granules when subject to vibrations
Thermally stable up to 80C
Biodegradable where the decomposition products are non-harmful to the environment
Non toxic

Alternative solutions may be considered if feasibility is proven.

We Offer: Funded research, Exclusive IP licensing, Joint development
Importance
Key Expectation from the solution
Must Meet
 Cost of material below 20 $/ton of fertilizer
Must Meet
 Liquid in application by spraying (e.g. melting point <50C, coagulation point 40-50C)
Must Meet
 High adhesion to spherical and non spherical 1.4-4.5mm fertilizer granules
Good if Met
 
Good if Met
 
Good if Met
 
Challenge Start date: 16-Mar-17         
End date: 31-Dec-17
 Scheduled
 Completed
 In progress
 Need attention
IP Collaboration: Funded research, Exclusive IP licensing, Joint development
 

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