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Presentation at Bioseminar, Telemark University College, 21. December 2011. Foss Farm/Foss Biolab. By Knut Vasdal Farmer at Foss farm (knut@vasdal.no). Foss farm. 60 milking cows Organic farming since 1990. Meat and milk. Metan. Manure. food. Metan. N2O. N2O. Fertilizer.
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Presentation at Bioseminar, Telemark University College, 21. December 2011 Foss Farm/Foss Biolab By Knut VasdalFarmer at Foss farm (knut@vasdal.no)
Foss farm 60 milkingcows Organicfarmingsince 1990
Meat and milk Metan Manure food Metan N2O N2O Fertilizer
Organicfarming • No chemical/synteticalfertilizer • No pesticides
Organicfarming systems • Crop rotation • Ruminant animals • Biologicalnitrification • Soilstructure
Cowmanureslurry • -Great NH3- emissionafterspreading at fields • -Difficult to utilize in highpopulated area • -Demagesoilstructure • -Conserveweedseeds and patogen spores • -Impossible to spreadexactly • +Costefficentway to spreadonfields
Foss biolab • Started 2007 • 2010- indoors • 2011 pilot process line for cowmanure • Scientific works • Test lab for full scale full scalebiogas plants • Education
Solid/fibrousfraction • Vermicomposting • Improvesoilstructure • Removestinky smell • Increasemicrobialactivity • Decreaseweedseedsgermination • Remove patogen organism • Stabilizecarbonfraction
Organic matter in thesoil-soilfertility • Water houshold • Microbialactivity • Nutritionexchangecapasity • Aggregat building/soilstructure • Heat absorption • Soilerosionresistance • Carbonimmobilization
Biogas-Foss farm • Bioenergycentral • Hot water for 32 housesneed 384 000kWh • 86 000kWh energy from biogas • Wood chips for rest energydemand • Start up 2012-2013 Foss Housing Area Ca: 20 housing Housingrea Ca: 12 boenheter Bio heatcentral Biogas plant Foss farm JPE/2011
Liquidnitrifiedfertilizer • No N- emission • No N2O-emission • No smell • Spreadingindors or outdoorsevenonsunnydays • No residuesonleaves • No patogens • No weeds • Easy to spreadexactly • Also as leaffertilizer • Availabledirectly as plant nutrition