CHARACTERISTICS OF U. S. RICE FIELDS AND THEIR EFFECTS ON GROUND MOBILITY.
Final technical rept.,
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
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The primary objective of this study was to obtain information on the environmental characteristics of rice fields in the United States and the effect of these characteristics on ground mobility for comparison with similar characteristics of rice fields in Southeast Asia as data from the latter become available. Twenty-two study sites were located in rice fields in a variety of soil types and under various cultural practices in Arkansas and Louisiana. Fifteen of the 22 sites were selected for data collection several times during a one-year period March 1963-March 1964 to determine the seasonal variations in soil moisture, strength, vegetation characteristics, and hydrologic geometry characteristics. Cultural practices and data from the nearest weather stations also were recorded. Profiles and spacing of surface and hydrologic geometry features were measured. General conclusions were a for most U.S. rice fields tested a good correlation exists between soil strength in terms of rating cone index and soilmoisture content b estimates of soil strength of rice fields can be made by employing the WES soil moisture -strength prediction method c surface geometry features dikes found in U.S. rice fields would not be a significant deterrent to ground vehicles. Author
- Soil Mechanics
- Surface Transportation and Equipment