YieldMax Duo™
Diversified income from grain, fibre, and carbon credits
YieldMax Duo™ is the only variety combining all five Stackatrait™ trait categories — Cannabinoid Modification, Seed Yield & Oil, Fibre Quality, Root & Carbon, and Climate Resilience — for maximum revenue diversification. Four income streams: 0.8–1.2 t/ha grain + 6–8 t/ha straw + 8–15 t CO₂/ha carbon credits + shives.
0.8-1.2
t/ha grain yield
6-8
t/ha straw yield
100-120
days to maturity
<0.01%
THC by design
8-15t
CO₂/ha sequestered
£3,627
avg gross margin/ha
Complete Precision Trait Stack
YieldMax Duo™ is the only variety that combines all five Stackatrait™ trait categories, delivering the most comprehensive trait stack for maximum revenue diversification
THC Elimination by Design
Proprietary cannabinoid modification permanently disables THC production, ensuring <0.01% THC in all plant tissues under all environmental conditions. Essential for dual-purpose varieties with extended harvest windows.
- <0.01% THC guaranteed
- Stress-proof compliance
- Zero crop destruction risk
- Flexible dual-harvest timing
Balanced Grain Output & Premium Oil
Inherits the BritGrain grain trait stack, moderately de-tuned for balanced dual-purpose performance. Enhanced seed size, shatter resistance, and a premium high-oleic, low-linolenic oil profile optimised for food and cosmetic markets.
- 0.8–1.2 t/ha grain yield
- 28–32% oil content, >70% oleic acid
- 95–98% harvest efficiency
- Yellow seed, mild flavour for premium markets
Construction-Grade Fibre & Shives
Precision trait modifications deliver 20–25% bast fibre content with mild lignin and pectin adjustment for easier decortication and processing. Straw valued at £180–280/t for hempcrete, insulation, and industrial applications.
- 6–8 t/ha dry straw
- 20–25% bast fibre content
- 3–4 week retting period
- 5–7 t/ha shives for construction
Deep Root Carbon Sequestration
Proprietary deep root architecture drives taproots to 2–3 metres, sequestering 8–15 tonnes of CO₂ per hectare — comparable to young woodland and far exceeding any conventional arable crop. Opens a completely new revenue stream through carbon credits.
- 2–3m deep taproot system
- 8–15 t CO₂/ha sequestered
- £240–750/ha carbon credits
- Improved soil structure and drought resilience
UK-Optimised Growth & Disease Protection
A suite of climate adaptation traits reduces the germination threshold to ~8°C, provides 100–120 day predictable maturity, balanced 2.0–2.5m architecture for dual-purpose harvest, and DiseaseGuard+ broad-spectrum powdery mildew resistance.
- 8°C cold germination, April sowing
- 100–120 day predictable maturity
- 2.0–2.5m balanced architecture, <5% lodging
- DiseaseGuard+ powdery mildew resistance
Carbon Sequestration Leader
YieldMax Duo™ sequesters 8-15 tonnes of CO₂ per hectare — comparable to young woodland and far exceeding any conventional arable crop
8-15 t CO₂/ha
CO₂ sequestered annually
£240-750/ha
additional income from carbon credits
2-3 metres
deep taproot system
Carbon credit pricing based on UK Woodland Carbon Code and voluntary market rates. Sequestration estimates based on peer-reviewed hemp biomass carbon capture research.
Agronomic Specifications
Detailed growing parameters for optimal dual-purpose production in UK conditions
0.8-1.2 t/ha
Grain Yield
6-8 t/ha
Straw Yield
28-32%
Oil Content
22-28%
Protein Content
100-120 days
Maturity
2.0-2.5 m
Plant Height
<0.01%
THC Level
April – June
Sowing Window
8-10°C
Min Germ. Temp
40-55 kg/ha
Sowing Rate
15-20 cm
Row Spacing
70-90 kg N/ha
N Requirement
8-15 t/ha
CO₂ Sequestration
2-3 metres
Root Depth
20-25%
Bast Fibre
90-95%
Harvest Efficiency
Performance Across UK Regions
100-120 day maturity fits all UK growing regions, with carbon sequestration benefits across all conditions
| Region | Grain Yield | Straw Yield | CO₂ Sequestered | Notes |
|---|---|---|---|---|
| Southern England | 1.0-1.2 t/ha | 7-8 t/ha | 12-15 t CO₂/ha | Optimal dual-purpose conditions |
| Midlands | 0.8-1.0 t/ha | 6-7 t/ha | 10-13 t CO₂/ha | Strong carbon sequestration potential |
| Scotland | 0.6-0.8 t/ha | 5-6 t/ha | 8-11 t CO₂/ha | Fits 131-day Scottish growing season |
Financial Returns — Four Revenue Streams
YieldMax Duo™ delivers £1,927-5,327/ha gross margin from grain, fibre, shives, and carbon credits
Revenue Streams
Variable Costs
vs UK Arable Crops (Gross Margin/ha)
Sources: DEFRA Chapter 7 Crops 2024, AHDB Harvest 2025
Market Applications
YieldMax Duo™ provides maximum flexibility for diverse farming operations
Diversified Farm Income
Four revenue streams from grain, fibre, shives, and carbon credits. Flexibility to prioritise whichever market offers better returns at harvest time. Gross margin £1,927-5,327/ha.
Food & Construction Supply
Supply both the growing hemp food market (0.8-1.2 t/ha grain at £800-1,200/t) and sustainable construction sector (6-8 t/ha straw at £180-280/t) from a single crop.
Carbon Farming
Deep 2-3m root system sequesters 8-15 t CO₂/ha — among the highest of any UK arable crop. Carbon credits at £30-50/t CO₂ add £240-750/ha in additional income.
Rotation Flexibility
Excellent break crop for arable rotations. Improves soil structure, reduces disease pressure, and provides diverse income. 100-120 day maturity fits most UK rotations.
Voices for Hemp
"I don't know if hemp is going to save the world but it's the only thing that can."
Jack Herer
Hemp Advocate & Author of 'The Emperor Wears No Clothes'
"We shall, by and by, want a world of hemp more for our own consumption."
John Adams
2nd President of the United States