Lloyd Byers, Liverpool, Pa., no-tiller, explains how he has set up a press to extract the oil from canola and sunflower seeds to offset high fuel costs. Some of the equipment on his farm can take between 20% and 40% of the natural oils. According to Byers, both sunflower and canola seeds are upwards of 40% oil.
http://www.no-tillfarmer.com/
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