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| 33 % Granule Mass at Day 47 | CNP-17+ held 3.34 g of the original 10 g load. |
| 5.22 g Survived the First 72 h | All references hit 0 g by 72 h—only CNP-17+ stayed intact. |
| Smooth Exponential Release (R² ≈ 0.98) | No “dump” at end of curve; continuous feeding for 6 weeks. |
High-solubility calcium nitrate typically dissolves within hours, forcing multiple re-applications and driving nitrate runoff. PED coated 17-0-0 (33 % CaO) granules with its biodegradable Durable Inputs™ barrier and monitored mass loss under outdoor humidity for 47 days. Wax-coated, un-coated, and polymer references all disintegrated by 72 h. CNP-17+ retained 5.22 g at 72 h and 3.34 g (33 %) at Day 47, following an exponential decay curve (R² ≈ 0.98). The study confirms a plastic-free path to 4-6 weeks of nitrogen and calcium availability. Full methods, data tables, and agronomic ROI are detailed in the PDF.
Single-Pass Convenience – Cut veg-crop CN passes from three to one.
Lower Product + Labor Cost – Save ≈ $5 k/100 ac vs. PU-CRFs.
Plastic-Free Compliance – Meets EU 2028 micro-plastic ban today.
Peace-of-Mind After Rain – Granules stay put; N stays available.