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While no truly new crop has been developed by modern man, new uses and new
methods of cultivation of known plants may be regarded as new crops. For
example, subsistence and special-use plants, such as the members of the genus
Foundation inbred lines were developed to meet the needs of varying climates,
growing seasons, soils, and other factors. The large hybrid seed-corn companies
undertook complex applied-research programs, while state experiment stations ...
The hogs developed in the United States in the latter part of the 19th and first part
of the 20th century were heavy, fat-producing animals that met the demands for
lard. During the 1920s lard became less important as a source of fat because of ...
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review
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For virtually all its 238 years,Britannica has ruled the shelves as a peerless general encyclopedia. Reviewers have consistently given it high marks for most of the 12 criteria identified inKister's ... Read full review