Blenders buy humate for one practical reason: it has to go through the mixer without turning the blend into a dusty, segregating mess. This granule is sized to sit inside a typical NPK blend at 5-10% inclusion, with a bulk density close enough to granular urea and compound that it does not float to the top of the bag during filling or handling.
Banana and cassava growers in Mindanao and the Visayas are the main users of the blends we supply this grade into. Both crops are heavy potassium feeders with shallow, aggressive root systems, and both respond to a basal application that puts organic carbon and chelated micronutrients in the planting hole rather than on the surface. A blend carrying 5-8% sodium humate at 400-600 kg per hectare delivers roughly 20-50 kg of humate per hectare, which is a sensible agronomic dose rather than a token inclusion.
We supply a blending specification sheet with bulk density, angle of repose and granule size distribution measured on the actual lot, so your blending engineer can set the dosing screw without trial and error. If you send us your existing blend recipe, we can also comment on whether the humate inclusion will change the blend's critical relative humidity.
Key Features
- Blend-compatible density: 0.75-0.95 g/cm3 bulk density keeps the granule from segregating against urea and compound granules.
- 5-10% inclusion rate: designed for standard NPK blending lines without reformulating the whole recipe.
- Low dust, low fines: screened and de-dusted so the mixer and bagging line stay clean through a shift.
- Blending data supplied: bulk density, angle of repose and size distribution measured per lot for dosing screw setup.
- Root-crop focus: suits banana and cassava basal programmes where humate belongs in the planting hole, not on the surface.
- Consistent granule hardness: survives the mixer paddle and the bagging chute without breaking down into powder.
Technical Specifications
| Parameter | Specification |
|---|
| Product name | Sodium Humate Granules, NPK blending grade |
| CAS number | 68131-04-4 |
| HS code | 38249999 |
| Total humic acid (dry basis) | ≥60% |
| Total organic matter (dry basis) | ≥75% |
| Water solubility | ≥90% |
| pH (1% solution) | 9-11 |
| Moisture | ≤15% |
| Granule size | 1.0-2.8 mm for blend matching |
| Bulk density | 0.75-0.95 g/cm3 |
| Recommended inclusion | 5-10% of blend weight |
Applications and Dosage Guidance
Banana: 400-600 kg per hectare of the finished blend at planting, placed in the hole and covered before the sucker is set, then 200-300 g per mat per cycle as a side dressing. Cassava: 300-500 kg per hectare of blend banded at planting along the ridge, with the granule kept 5 cm from the stem cutting to avoid direct contact with the fresh cut surface.
For blenders, the practical check is a 50 kg trial batch: mix the intended inclusion rate, bag it, drop the bag twice from one metre, and screen a sample to see whether the humate has separated. If it has, adjust the granule size match rather than increasing the binder, because a size mismatch is almost always the cause. We will review your trial results and adjust the cut on the next production run if needed.
Packaging, Documentation and Quality Assurance
Bulk supply is available in 1,000 kg jumbo bags for blending plants, or 25 kg bags if the blend is packed at a smaller site. Jumbo bags have a discharge spout sized for a standard hopper and a liner that keeps moisture pickup low in an open blending shed. Bags carry the lot number and the measured bulk density for that lot.
Documentation includes COA, MSDS and a blending data sheet with the physical measurements. For buyers who register a blended fertiliser, we can supply the humate component analysis in the format your registration authority expects, including heavy metal figures from our routine panel. Factory audits and retained samples are available as with all our grades.
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