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Paper Information

Journal:   JOURNAL OF AGRICULTURAL SCIENCES   JANUARY 2008 , Volume 13 , Number 2 (SUPPLEMENT); Page(s) 397 To 415.
 
Paper: 

PADDY SOIL CHARACTERISTICS INFLUENCE RICE PRODUCTION

 
 
Author(s):  PAZIRA E., MASIHABADI M.H.
 
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Abstract: 

Conceivably no major food crop other than wheat can compete with rice in the range of climatic and hydrologic conditions under which, it is grown. Rice is produced in every continent except antarctica and thrives in an area ranging in latitude from 55o to 40o. It grows as a dryland crop much like wheat or maize, as a rainfed crop under alternately submerge and dry conditions, and as a continuously flooded crop. Farmers grow rice on alluvial plains, flooded valleys, and terraced hillsides. Even though it has less drought tolerance than other cereals, rice grows well in arid areas under irrigation such as in Asia and north Africa. Likewise, despite rice's sensitivity to low temperature, yields are high in northern Japan and China and at elevations of more than 3,000 meters above sea level in the tropics and subtropics. Most paddy soils are located at lower positions in landscapes to permit water easy access from higher irrigation or natural surface runoff sources. These wetland rice areas may be flat-bottomed valleys or terraced and bounded hillsides of otherwise upland areas. But more often, they are found in alluvial flood plains, deltaic plains, coastal plains, tidal flats, marshes, and major river valleys. Such areas are generally characterized by a natural or induced "aquic" moisture regime that implies high moisture and low oxygen conditions. As a consequence of this high moisture-low oxygen requirement, the soil characteristics for paddy rice culture may vary less than those for upland or dryland rice.

 
Keyword(s): RICE PLANT, LAND AND PADDY SOILS, RICE PRODUCTION, PADDY FIELDS
 
References: 
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