Advances in plant breeding can only be realized if good seed of new varieties is made available to the farmer. To maintain a variety in a pure state requires a continuous renewal process for which stringent precautions are needed. The extra cost of good seed is more than justified. High quality seed must be good physiologically as well as genetically. Although profit opportunities for the cereal seed trade are greatest with new cultivars, this inevitably means that risks must be taken.
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References
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Ass. Off. Seed Certifying Ag. (1973) Certification Handbook Clemson Univ., S. Carolina, 169 pp
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Commonwealth Secretariat (Annual) Grain Crops: Statistics of Production, Trade, Consumption etc. Commonw. Sec., London
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ElliottJ G, AttwoodP J (1970) Report on a joint survey on the presence of wild oat seeds in cereal seed drills in the United Kingdom during spring 1970. ARC Weed Res. Org. Tech. Rep. No. 16
