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Applications · Agriculture and soil

Hardwood biochar for soil.

Prime 6 biochar is a high fixed-carbon hardwood biochar made in Fairmont, West Virginia, with no binders, glues or additives. Prime 6 supplies it to commercial growers, vineyards and land managers who want carbon that stays in the soil.

Photo of a handful of Prime 6 biochar granules held in an open palm, black and white.
Prime 6 biocarbon granules, as produced

What is Prime 6 biochar?

Prime 6 biochar is the same hardwood biocarbon Prime 6 makes for steel, graded and sized for soil. It tests at 88 to 92% fixed carbon with 5 to 10% volatile matter, the profile of a biochar that stays stable in the ground. The feedstock is hardwood residue from timber mills, carbonized in closed chambers under a patented process.

What does biochar do in soil?

Biochar is used in soil to hold water in the root zone, keep nutrients where roots can reach them (cation exchange capacity) and give soil microbes a stable habitat. These are documented effects of biochar as a class of material. The size of the effect depends on the soil, the crop and the application rate, so Prime 6 sends the lab data on the material itself and recommends a measured trial on your own ground before a full application.

How long does Prime 6 biochar stay in the soil?

Biochar standards use the hydrogen-to-carbon ratio (H:C) as the indicator of how long the carbon persists in soil: the lower the ratio, the more stable the carbon. Prime 6 biochar tests at 88 to 92% fixed carbon and 5 to 10% volatile matter, which point the same way.

PropertyPrime 6 value
H:C ratio0.27
Fixed carbon88 to 92%
Volatile matter5 to 10%
Ash1.5%
Moisture1 to 3%
Lab-tested values. Full reports with methods are sent with samples.

How is it supplied?

Prime 6 biochar is produced to the particle size the use needs, sized at the plant in Fairmont, West Virginia. Samples ship first, with the lab data, so the material can be tested before any volume is discussed.

For soil use, powder and granules are the forms that suit most applications.

Can Prime 6 biochar be used for water filtration?

Yes, as a supply option. Prime 6 biochar can be supplied as a hardwood carbon filter medium, for example in drainage and runoff filter beds, sized to the particle range the filter specifies. Samples and the lab data come first, so it can be tested in your own setup before any order.

Questions growers ask

What is Prime 6 biochar made from?

Hardwood residue from timber mills, carbonized in closed chambers under a patented process, with no binders, glues or additives.

What particle sizes does Prime 6 supply for soil?

Powder and granules, sized to the application. Tell Prime 6 how you apply it and the size follows.

Can I get a sample of Prime 6 biochar?

Yes. Use the contact form and name your use. Prime 6 confirms the size and the delivery time.

Does Prime 6 publish an H:C ratio for its biochar?

Yes. Prime 6 biochar tests at an H:C ratio of 0.27. The lab report comes with samples.

Talk to Prime 6 about biochar for your soil

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