Scientific American 20, 3.2.1849
The most of out madder used in the country is procured from Belgium. Kentucky, Missouri, Tennessee, Arkansas, and perhaps the whole southwestern country would produce it well. A madder plantation requires a good deal of preparation and some 3 or 4 years before a large and regular yield can be expected. Deep ploughing and bedding and thorough manuring are requisite; but when once prepared, the expenditure of labor is not so heavy, and where properly arranged the crop is annual, that is to say, one third or one fourth of the land is digged each year, producing several hundred dollard per acre.
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