Saudi Arabia, the UAE and the drier parts of Thailand and Indonesia share a specific problem: sand with almost no exchange capacity. Irrigation water, whether from a well or a desalination line, carries sodium and chloride, and with nothing to hold calcium and magnesium the soil structure collapses into a sealed surface layer within two or three seasons. This 80 percent grade is the highest concentration we produce, with a cation exchange capacity measured at 400 to 450 meq per 100 g, and it is formulated for exactly that situation.
Applied with gypsum or calcium nitrate, the humate supplies the exchange sites that the calcium then occupies, displacing sodium and allowing it to leach below the root zone. On date palm, tomato in sand culture and fodder crops under pivot irrigation, the practical result is better infiltration, less surface crusting and a measurable drop in pH and EC in the root zone within one season. We recommend a soil test before and after the first application, and we will read the result with the buyer if they send it to us.
Key Features
- Highest concentration: 80% humic acid and 400-450 meq/100g CEC, the strongest grade in our range for problem soils.
- Sodium displacement: Supplies exchange sites so calcium from gypsum or calcium nitrate can push sodium out of the root zone.
- Structure repair: Reduces surface crusting and restores infiltration on sand and loamy sand under pivot or drip irrigation.
- Water quality tolerance: Performs in hard, saline irrigation water where many liquid products flocculate.
- Soil test support: We read pre and post application soil analysis with the buyer and adjust the rate accordingly.
- Gulf documentation: Heavy metal report and SASO or SFDA related papers prepared on request.
Technical Specifications
| Parameter | Typical Value | Test Method / Remark |
|---|
| Appearance | Black powder | Visual |
| Humic acid (dry basis) | 80% min | Colorimetric titration |
| Cation exchange capacity | 400-450 meq/100g | Ammonium acetate method |
| Moisture | 12% max | Oven drying 105 C |
| pH | 8.0-10.0 | 1:10 suspension |
| Particle size | 100 mesh | Sieve |
| Ash content | 10% max | Muffle furnace 550 C |
| Heavy metals | Below limits | ICP-MS, report per lot |
For saline and sodic soils, apply 30 to 60 kg per hectare as a soil drench, three to four times in the first season, together with a calcium source. For sand culture vegetables and greenhouse tomato, 20 to 30 kg per hectare per cycle through fertigation. For date palm and other tree crops in sand, 50 to 100 g per tree per application in the irrigation basin, four times a year. For soil mixing before planting, 1 to 2 kg per cubic metre of sand or sand-compost mix. Do not apply in the heat of the day; irrigate immediately after application to move the product into the root zone.
Buyer Guide for Southeast Asia and the Gulf
We ship this grade to Saudi Arabia through Jeddah and Dammam, and to Southeast Asian buyers facing coastal sandy soils through Port Klang, Laem Chabang and Ho Chi Minh. A 20ft container carries 26 tons in 25 kg bags. Because the grade is used in precision programmes, we supply a full COA including CEC, humic acid, ash and heavy metals (Cd, Pb, As, Hg), and we can arrange SASO or SFDA related documents for Saudi importers on request.
Packaging & Quality Assurance
Packing is 25 kg PP woven bag with PE liner, 1 ton jumbo bag, or 10 kg bag for greenhouse use. The powder is ground to 100 mesh and screened before bagging so it disperses quickly in an irrigation tank. Every batch is checked for humic acid, CEC, moisture, pH and heavy metals, with retained samples kept 24 months under ISO 9001 control.
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