Archive image from page 171 of Cyclopedia of farm crops . Cyclopedia of farm crops : a popular survey of crops and crop-making methods in the United States and Canada cyclopediaoffarm00bailuoft Year: 1922, c1907 Fig. 211. 'Seeds' or perigynia of species of carex, sedge plants that are sometimes found in grass seed. large quantities from Germany to be used as an adulterant of red clover and alfalfa. It is a low- prowing, leguminous plant not cultivated in the United States and of no value where red clover or alfalfa will grow. Bur-clover seed, which is combed out o£ South American wool, is al
Archive image from page 171 of Cyclopedia of farm crops . Cyclopedia of farm crops : a popular survey of crops and crop-making methods in the United States and Canada cyclopediaoffarm00bailuoft Year: 1922, c1907 Fig. 211. 'Seeds' or perigynia of species of carex, sedge plants that are sometimes found in grass seed. large quantities from Germany to be used as an adulterant of red clover and alfalfa. It is a low- prowing, leguminous plant not cultivated in the United States and of no value where red clover or alfalfa will grow. Bur-clover seed, which is combed out o£ South American wool, is also imported from Germany and mixed with alfalfa seed. English and Italian rye-grass and meadow fescue seed are frequently mixed with orchard-grass seed in vary- ing proportions. Canada blue-grass seed, although used to some extent in this country, is imported in large quantities from Canada, to be mixed with, or sold as Kentucky blue-grass seed. All of these seeds used as adulterants resemble so closely the seeds with which they are mixed that they are difficult to distinguish. In the following discussion, enlarged pictures are given of the true seed, in order that the examiner may distinguish adulter- Fig. 213. Alsike clover. ants. The sedges frequently occur with grasses but are not used as adulterants. Some of the seeds or fruits are shown in Fig. 211. Farm seeds and advlterants. Ued CLOVER (Tr if oil um pratense). Fig. 212. Fresh, well-matured seed is plump and has a slight luster. The color is clear yellow, violet or variegated. Old seed loses these colors, which are replaced by dull brown. Artificial polishing produces a high luster but does not redeem the original colors. Shriveled screenings are thin owing to the poorly developed embryo, and dull greenish or brown. Well-devel- oped seeds are somewhat triangular, rounded and have a broad notch at the .scar. Samples of com- mercial seed exhibit considerable difference in the average size of the seeds. Alsike clover {T
Size: 1959px × 1021px
Photo credit: © Bookive / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
