Cereal straw and other dry byproducts (wood chips) may be used in small on-farm boilers typically to generate heat for drying harvested crops (cereals, oilseeds) or space heating (greenhouses, residential). Furthermore, biogas (predominantly methane) generated from animal wastes (e.g. pig slurry) by anaerobic digestion may also be used to power on-farm boilers typically to generate heat and also electricity in larger and more sophisticated installations.
Early tractor designs were based on the concept of substituting mechanical pulling or draft power for the draft animal classically associated with pulling plows through the soil, operating reaper and binder machines through fields of corn, or mowers through fields of grass. Cumbersome steam powered engines were soon to be replaced by the more energy efficient and compact internal combustion engine.

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Cereal straw and other dry byproducts (wood chips) may be used in small on-farm boilers typically to generate heat for drying harvested crops (cereals, oilseeds) or space heating (greenhouses, residential). Furthermore, biogas (predominantly methane) generated from animal wastes (e.g. pig slurry) by anaerobic digestion may also be used to power on-farm boilers typically to generate heat and also electricity in larger and more sophisticated installations.
Early tractor designs were based on the concept of substituting mechanical pulling or draft power for the draft animal classically associated with pulling plows through the soil, operating reaper and binder machines through fields of corn, or mowers through fields of grass. Cumbersome steam powered engines were soon to be replaced by the more energy efficient and compact internal combustion engine.

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