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Available Water-Holding Capacity of Alluvial Soils in Louisiana¹

ABSTRACT

A water-holding capacity survey consisting of 22 profiles in Louisiana gave a positive correlation of 0.626 for silt and range of available moisture. Data indicated clay held moisture at suction values too high for plant availability. A negative relationship existed between sand and range of available water. Permeability was positively correlated with percent large pores.

Many of the soils of Louisiana range from medium to fine texture and have large amounts of water available to plants. Permeability is a problem due to the low percent large pores.

¹ Contribution from the Soil & Water Conservation Research Div., ARS, USDA. Presented before Div. V, Soil Science Society of America, Nov. 21, 1957 at Atlanta, Ga.

² Soil Scientist, Soil & Water Conservation Research Division, ARS, USDA, Louisiana State Univ., Baton Rouge. The author gratefully acknowledges the help of D. L. Fontenot, State Soil Scientist, SCS, and L. L. Loftin, Soil Scientist, SCS, for selection and classification of sampling sites.

Received for publication May 29, 1958. Accepted for publication October 21, 1958.