Elementary agriculture with practical arithmetic elementaryagricu01hatc Year: 1906 86 ELEMENTARY AGRICULTURE have the same effect. Mullein, wild parsnip, burdock and bull thistle belong to this class. Perennials may go to seed every year, but their roots live on from year to year, and the only way to eradi- cate them is to destroy them root and branch—not an easy thing to do. Perennials give most trouble to the farmer. To this class belongs the large number of CANADA THISTLES, TPIE WORST OP WEEDS. ''noxious' weeds, Canada thistle, ox-eye daisy, couch grass, sorrel and common dock. As soon
Elementary agriculture with practical arithmetic elementaryagricu01hatc Year: 1906 86 ELEMENTARY AGRICULTURE have the same effect. Mullein, wild parsnip, burdock and bull thistle belong to this class. Perennials may go to seed every year, but their roots live on from year to year, and the only way to eradi- cate them is to destroy them root and branch—not an easy thing to do. Perennials give most trouble to the farmer. To this class belongs the large number of CANADA THISTLES, TPIE WORST OP WEEDS. ''noxious' weeds, Canada thistle, ox-eye daisy, couch grass, sorrel and common dock. As soon as any of the above make their appearance on the farm, the farmer should dig them up and burn them. If they are allowed to spread they will soon have possession of the farm. The writer has seen whole plantations,
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