Coarse Sodium Humate Granules 1.5-2.5mm Uniform Spread Pattern for Broadcast Application

Uniform granule size is not a cosmetic detail when you apply by spreader. A 1.5-2.5 mm cut with a tight size distribution throws an even pattern at 12 metres, which means the field gets the rate you planned instead of a heavy strip down the middle and nothing at the edges. This is the grade we supply to Thai cassava and maize growers who work with twin-disc spreaders.

The granules are screened twice and de-dusted before bagging. Double screening removes the oversize that jams the hopper gate and the fines that hang in the air behind the spreader. In practice that means the operator can run at a steady 540 rpm PTO, hold a 12-15 metre swath and cover a hectare in roughly the same time as a straight fertiliser pass, without stopping to clear the hopper.

We publish the spreader calibration data with the shipment: gate setting, disc speed and forward speed for 200, 300 and 400 kg per hectare. Buyers who are switching from powder to granules usually find the first pass is the only one that needs adjusting.

• Tight size distribution: double screening holds the granule between 1.5 and 2.5 mm, so the spread pattern stays even across the swath.
• Spreader-ready: de-dusted granule flows at a steady rate through twin-disc and pendulum spreaders without bridging at the gate.
• Low dust: reduced fines mean less airborne loss and less cleaning of the machine and the operator's clothing after a shift.
• Calibration data supplied: gate setting, disc speed and forward speed tables for 200, 300 and 400 kg per hectare ship with each order.
• Firm granule: resists crushing in the bag during stacking, so the bottom pallet is still free-flowing when it is opened.
• Even coverage on undulating ground: consistent granule mass gives a predictable throw, which matters on terraced or uneven fields.

For broadacre application, calibrate the spreader to deliver 200-400 kg per hectare and work in two passes at right angles on fields where the rate matters closely, such as saline patches or newly cleared land. Apply before the main rainy period so the granules break down in the first two wetting events, and avoid spreading into wind above 15 km/h because even a coarse granule will drift at the edge of the swath.

On cassava and maize in the northeast of Thailand, growers usually band 250-400 kg per hectare at planting rather than broadcasting, because the crop is planted on ridges and the granule is better placed in the row. On rubber and eucalyptus, 200-300 g per tree in a ring at the drip line, covered with soil, gives a slower release than surface broadcasting and avoids loss to runoff on sloping ground.

Packing is 25 kg PP woven bags with PE liner, 40 bags per 1 tonne pallet, or 1,000 kg jumbo bags for large farms. Bags carry the granule size range, humic acid figure and lot number, and can be printed in Thai or Bahasa on request from 500 bags.

Each shipment includes COA, MSDS, packing list and the spreader calibration sheet. We keep retained samples for twelve months and can supply a 25 kg sample for a spreader trial before a container order. Third-party inspection through SGS or Intertek can be arranged if your bank or buyer requires it.