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Imports and Plantings of High-Yielding Varieties of Wheat and Rice in the Less Developed Nations

Author

Listed:
  • Dalrymple, Dana G.

Abstract

The use of high-yielding varieties (HYV) of wheat and rice has expanded sharply in recent years. The purpose of this bulletin is to provide statistical data on imports of seed and area planted in individual nations. There is no one standard definition of high-yielding varieties; this report refers largely to the dwarf and semi-dwarf types of wheat and rice developed, respectively, in Mexico and the Philippines. Most of the HYV wheat and all of the reported rice area was in South and East Asia; of the 1970/71 total, 58% of the wheat and 54% of the rice was in India. More limited areas of HYV wheat have been planted in West Asia and North Africa. HYV rice has also been planted in Latin America. In addition to presenting statistical data and accompanying documentation, the report briefly reviews the development of the major wheat and rice varieties. A discussion of rice improvement in three Communist nations in Asia is also included.

Suggested Citation

  • Dalrymple, Dana G., 1972. "Imports and Plantings of High-Yielding Varieties of Wheat and Rice in the Less Developed Nations," USDA Miscellaneous 344104, United States Department of Agriculture.
    • Handle: RePEc:ags:usdami:344104
    DOI: 10.22004/ag.econ.344104
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