Biochar & carbon amendments
Stable carbon that stays in the soil for centuries.
Biochar is charcoal produced by pyrolysis of biomass — in the vineyard, typically prunings. Incorporated into the soil, it is one of the most stable ways to lock in carbon, persisting for centuries.
Beyond carbon, its porous structure boosts water and nutrient retention and offers habitat to microbes. It works best when “charged” with compost or nutrients before application, so it does not immobilise nitrogen at the start.
Effort
Medium to high — production or purchase and incorporation.
Cost
Medium to high per hectare, but a single, long-lasting dose.
Time to result
Soil effect in 1–3 seasons; carbon permanent.
What this practice regenerates
Impact by goal — click through for detail and metrics.
Carbon sequestration & climate
It is the most durable form of vineyard sequestration — recalcitrant carbon that stays in the soil for centuries.
Time horizon: Immediate and permanent
What to measure for this pairing
Soil health & structure
The porous structure raises cation-exchange capacity, nutrient retention and microbial habitat.
Time horizon: 1–3 seasons
What to measure for this pairing
Water resilience & drought
Biochar porosity raises plant-available water held, especially in sandy, low-organic-matter soils.
Time horizon: 1–3 seasons
What to measure for this pairing
How it works
Pyrolysis converts biomass into recalcitrant aromatic carbon that resists decomposition, while its porosity holds water, nutrients and microbiology.
How to implement
- 1Gather woody biomass (prunings) as feedstock.
- 2Produce biochar by controlled pyrolysis.
- 3Charge the biochar with compost or nutrients before applying.
- 4Incorporate under-vine or blend into compost.
What to measure
Frequently asked
Can I make biochar from prunings?
Yes — prunings are an ideal feedstock, and making biochar instead of open-burning them avoids emissions and creates a valuable amendment.
Why must biochar be “charged”?
Fresh biochar can temporarily immobilise nitrogen. Pre-charging it with compost or nutrients avoids that and speeds up the benefit.
Related reading
Related practices
How GrapeFlow helps
Implement and document this practice by plot, with an audit-ready history.
Carbon footprint calculator (free)
A public, no-sign-up calculator to estimate the footprint per bottle and see where the biggest sources are before changing the practice.
Electronic field notebook (Portugal)
In Portugal, log every operation — cover sowing, grazing, composting, mowing — by plot and date, with an audit-ready history that proves the practice over the years.
Plot registry
Every practice tied to the right plot, with area, variety, rootstock and history — so you know where you did what and can compare blocks.