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| Szerencsits, Manfred; Erhart, Eva. |
| Cover or catch crops have beneficial effects for soil, water, erosion, etc. If harvested, they also provide feedstock for biogas without competition for arable land. The latter also applies to clover grass ley or other residues on organic farms without ruminants and for manure. With an explorative approach, combining field experiments and data collection of practical implementation, we investigated achievable yields and identified recommendations for practical use. Gross energy yields of cover crops varied between 700 and 2000 m³ methane (CH4) ha-1 in Austria. The energy return on energy invested (EROI) ranges from 4 to 7, if biogas is upgraded and com¬pressed for biofuel use. Therefore, about 1000 m³ CH4 ha-1 are remaining as net energy yield from 4.5 t... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Recycling; Balancing and resource management Crop husbandry Soil Environmental aspects. |
| Ano: 2015 |
URL: http://orgprints.org/27238/1/27238_szerencsits.pdf |
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