Grass for Biogas

By: Dlf  05-Apr-2012
Keywords: Grass

Grass for Biogas/Making energy from grass

Varieties and mixtures for biogas production
Festulolium and red clover

100 % Festulolum HYKOR or Tall Fescue KORA

80 % Festulolium HYKOR + 20 % Red Clover

100 % Festuloium ACHILLES

80 % Festulolium ACHILLES + 20 % Red Clover

The (economic) value of an agricultural crop for biogas is determined by the amount of gas produced per hectare, the costs involved in harvest, transport and handling and the degradability of the biomass in the digester. Tall fescue and festulolium are together with red clover species having a very high yield potential and they can in many places compete with maize. Grass and clovergrass fits very well in an anerobic digester together with slurry where it improves the yield of gas. Grass is a perennial crop with a good environmental profile, grass brings health to the crop rotation and long time benefits to soil fertility.

Yield, DM (t) and gas, festulolium Hykor and Achilles +/- Red Clover Amos
DM/ha 1st yr.DM/ha 2nd yr.Nm3 gas/t OMNm3 gas/ha
Hykor + Amos18.016.9
Achilles + Amos18.514.4

3 cuts per year, 2008 and 2009. Gas production average of entries (only 2008). Danish Agricultural Advisory Service

Keywords: Grass

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