Energybeet for Biogas Simon Witheford & Steffi Eggers
Breeding for energy = Energy Crops from KWS Energymaize Energybeet OSR Hybrid Rye Sunflower Triticale 2 04/02/2015 KWS UK - Seeding the future
3 > 8000 AD Plants in Germany 3 04.02.2015 EC/SEg
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 2015 4 Date Department and/or Author's Initials
Energy Beet Sales Germany and UK 5 Date Department and/or Author's Initials
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
Basis for methane yield a conflicting argument? Range of breeding targets Whole Plant Digestibility, Starch, CWD, Fresh Yield??? 370 360 unabhängiger Datensatz y = 0.4701x + 174.6 R 2 = 0.1328 Methanausbeute Nl/ kg ots (NIRS) 350 340 330 320 310 300 290 Kalibrationsdatensatz y = 0.5287x + 154.53 R 2 = 0.5252 280 280 290 300 310 320 330 340 350 360 370 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
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 70 24 16.80 740 54% 400 6713 6,023 120 Energy maize 55 30 16.50 650 52% 338 5577 5,004 100 Hybrid Rye 45 35 15.75 620 53% 329 5175 4,643 93 High yields Yield stability over seasons Spring cropping option 8 Date Department and/or Author's Initials
Methane conversion of feedstocks Methane/unit organic DM 500 400 300 200 100 0 Sudan gras Rye -WCS Gras silage Maize silage Energybeet Methane yield (l n /kg odm) % of carbon converted into biogas 100 80 60 40 20 0 Energybeet/ root + leaves Maize, Sorghum Source: Biogas Handbuch Bayern Source: KWS 9 26.10.2010 EP / R. Lehrke
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 www.kws- February 15 Source: Vollmer in Eder/Schulz 2006 Biogas Praxis
Breeding for Energybeet estb. 2008 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
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
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 12.5 13.5 12.5 13.5 12.5 13.5 6 8 6 8 6-8 Target - Maximum DM yield per ha 13 Date Department and/or Author's Initials
KWS Energybeet varieties Variety Name Type Dry Matter Yield (rel.) Dry Matter Content (rel.) Fresh Root Yield (rel.) Dirt Tare (rel.)* Actual results 28.72 t/ha 120.90 t/ha GERTY KWS* ENERGY BEET 100 23.75 100 100 CINDY KWS ENERGY BEET 98 24.13 97 63 BERETTA FEED BEET 104 24.37 101 93 MAGNUM Fodder Beet 96 21.83 105 74 LINOVA KWS NEW ENERGY BEET 106 24.87 101 103 Source: Trials data 2013-2014, 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
Beet Storage 5 % gradient 2 % gradient 15 04/02/2015 KWS UK - Seeding the future
Bulging beet clamp 16 04/02/2015 KWS UK - Seeding the future
Development of effluent and silaged beet in 2011/2012 17 04/02/2015 KWS UK - Seeding the future
18 04/02/2015 KWS UK - Seeding the future
Optimal Ensiled Beet After Eight Months Storage in the Clamp 19 04/02/2015 KWS UK - Seeding the future
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