Energybeet for Biogas. Simon Witheford & Steffi Eggers

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1 Energybeet for Biogas Simon Witheford & Steffi Eggers

2 Breeding for energy = Energy Crops from KWS Energymaize Energybeet OSR Hybrid Rye Sunflower Triticale 2 04/02/2015 KWS UK - Seeding the future

3 3 > 8000 AD Plants in Germany EC/SEg

4 Breeding for Energy 126 biogas plants in the UK ~ 70 farm based plants 3000 hectares of Energy Beet for biogas in 2014 Forecasting 5000 hectares Date Department and/or Author's Initials

5 Energy Beet Sales Germany and UK 5 Date Department and/or Author's Initials

6 Biogas Feedstocks a farmers viewpoint 1. Security of supply (Contact grown, acreage, rental) 2. Growing costs (Cost per tonne of feedstock) 3. Yield /agronomic security (Budgeted yield, lodging) 4. Farm income (Diversified income at the farm gate) > 4 Key considerations among many others 6 04/02/2015 KWS UK - Seeding the future

7 Basis for methane yield a conflicting argument? Range of breeding targets Whole Plant Digestibility, Starch, CWD, Fresh Yield??? unabhängiger Datensatz y = x R 2 = Methanausbeute Nl/ kg ots (NIRS) Kalibrationsdatensatz y = x R 2 = Methanausbeute Nl/ kg ots (Labor) Poor correlation to methane yield Variation in fermentation quality Clear correlation to methane yield Main breeding target Conclusion DM Yield / ha = Methane Yield / ha 7 04/02/2015 KWS UK - Seeding the future

8 Financial Returns by Feedstock Crop Yield/ha (Fresh Weight) DM % DM Yield/ha Biogas Yield/t DM (m3) Methane Conv. % Methane Yield/t DM (m3) Methane Yield/ha (m3) Total Income/ha Relative Yield Energybeet % , Energy maize % , Hybrid Rye % , High yields Yield stability over seasons Spring cropping option 8 Date Department and/or Author's Initials

9 Methane conversion of feedstocks Methane/unit organic DM Sudan gras Rye -WCS Gras silage Maize silage Energybeet Methane yield (l n /kg odm) % of carbon converted into biogas Energybeet/ root + leaves Maize, Sorghum Source: Biogas Handbuch Bayern Source: KWS EP / R. Lehrke

10 Retention Time of Organic Matter in Anaerobic Digesters sugar (Mono-, Disaccharide) starch (Polysaccharide) proteins pectin (Polysaccharide) hemicellulose (Polysaccharide) cellulose (Polysaccharide) Sugar: fastest raw material for biogas production lignin hydraulic retention time (HRT) area of the technical economic limits with respect to the retention time 10 February 15 Source: Vollmer in Eder/Schulz 2006 Biogas Praxis

11 Breeding for Energybeet estb Sugarbeet Energybeet White Sugar Yield Dry Matter Yield Sugar Content Dry matter Content Low Amino N Digestibility Impurities Leaf yield Dirt Tare Bolting Rust Powdery Mildew Rhizomania Resistance Nematode Resistance Energybeet represents a new segment distinct from the sugar market 11 04/02/2015 KWS UK - Seeding the future

12 Amount of DM per tonne of fresh beet 0.15/kg DM* 0.18/KG DM* *Assuming 1 tonne of beet is sold for 35 per tonne 12 Date Department and/or Author's Initials

13 Are these suitable for livestock? YES Remove the water and DM value is equal Energybeet Fodder Beet Sugarbeet Dry Matter (%) D Value ME (MJ/kg DM) Crude Protein (g DM) 22-24% 16 19% 22 24% 78D 78D 78D Target - Maximum DM yield per ha 13 Date Department and/or Author's Initials

14 KWS Energybeet varieties Variety Name Type Dry Matter Yield (rel.) Dry Matter Content (rel.) Fresh Root Yield (rel.) Dirt Tare (rel.)* Actual results t/ha t/ha GERTY KWS* ENERGY BEET CINDY KWS ENERGY BEET BERETTA FEED BEET MAGNUM Fodder Beet LINOVA KWS NEW ENERGY BEET Source: Trials data , 6 trial locations from NIAB, KWS UK & English Sugar Beet Seed Company *GERTY KWS is the control 14 Date Department and/or Author's Initials

15 Beet Storage 5 % gradient 2 % gradient 15 04/02/2015 KWS UK - Seeding the future

16 Bulging beet clamp 16 04/02/2015 KWS UK - Seeding the future

17 Development of effluent and silaged beet in 2011/ /02/2015 KWS UK - Seeding the future

18 18 04/02/2015 KWS UK - Seeding the future

19 Optimal Ensiled Beet After Eight Months Storage in the Clamp 19 04/02/2015 KWS UK - Seeding the future

20 Conclusions High efficient use of acreage Sugar ferments extremely fast Energy beet is a cost effective feedstock for biogas Quality aspects of energy beets differ from sugar beet characteristics KWS foresees a strong future for energy beets as major feedstock for anaerobic digesters 20 04/02/2015 KWS UK - Seeding the future