Presentation on theme: "Biochar Field trial results in Norway - 2011 1 Adam O’Toole, Daniel P. Rasse, 2 Bjørn Lilleeng 1 Bioforsk Soil and Environment, Ås, Norway. 2 Norsk Landbruksrådgiving."— Presentation transcript:
Biochar Field trial results in Norway Adam O’Toole, Daniel P. Rasse, 2 Bjørn Lilleeng 1 Bioforsk Soil and Environment, Ås, Norway. 2 Norsk Landbruksrådgiving Gudbrandsdalen Støttet av:
Field trials in Norway Sel Ås Notodden
Introduction Carbonizing biomass renders plant-C more resistant to biological breakdown – a feature making it attractive for increasing soil C stocks.
Ås – Can biochar be used for carbon storage?
Biochar is a novel solution for increasing Soil C and reducing atomospheric CO 2 …provided that it: It is in fact stable, and leads to an overall increase in soil-C Does not pose a risk to food production and soil health
To estimate the stability of biochar-C and effects of biochar on native soil-C under field conditions Purpose of study
Methods C Stability: Measuringthe δ 13 C signature and CO 2 efflux of a C3 soil after additons of Miscanthus (C4 plant) derived biochar C4 plants: ~ -15‰ C3 SOM: ~ -30‰ Oats Miscanthus δ 13 C
Methods Equipment: Closed static chambers, Infrared gas analyzer (IRGA) for CO 2 efflux and Piccaro G1101-i for δ 13 C measurements) Keeling plot method used to isolate soil respired CO 2 in chamber measurements.
Biochar and Soil description Feedstock: Miscanthus giganteus (Elephant Grass) Produced by Pyreg Gmbh (Germany) Pyroysis temperature °C Fixed C = 70% VM= 7% Ash= 23% Total N: 2.5 g kg-1 Total P: 1.3 g kg-1 Total K:4.8 g kg-1 pH: 10 BET: 349 m 2 g -1 Soil: Inceptisol, Sandy Clay Loam, TOC: 2.5 %
Field Trial Biochar inverse ploughed in the fall of crop: Oats 2012 crop: Barley
Experimental Design 16 plots - 4 treatments x 4 reps 1.Miscanthus Biochar 8 t C ha -1 2.Miscanthus residue 8t C ha -1 3.Control – no amendments 4.Miscanthus Biochar 25 t C ha -1 Randomized block design
Results Average for season 0.33C 0.32MC8 0.31BC8 0.29BC25