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

Dana G. Dalrymple

No 344104, USDA Miscellaneous from United States Department of Agriculture

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.

Keywords: Crop Production/Industries; International Relations/Trade; Research and Development/Tech Change/Emerging Technologies (search for similar items in EconPapers)
Pages: 66
Date: 1972-02
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Persistent link: https://EconPapers.repec.org/RePEc:ags:usdami:344104

DOI: 10.22004/ag.econ.344104

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