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Published in Agron J 59:418-419 (1967)
© 1967 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Effect of Continuous Submergence Versus Alternate Flooding and Drying on Growth, Yield, and Nitrogen uptake of Rice1

W. H. Patrick, Jr., W. A. Quirk, III, F. J. Peterson and M. D. Faulkner2

A comparison was made of rice (Oryza saliva) grown under continuously submerged conditions and under alternately dry and flooded conditions in several greenhouse and field experiments. With nitrogen-deficient soils, alternately dry and submerged conditions caused an appreciable decrease in growth, yield, and nitrogen uptake. With soils high in available nitrogen as a result of being in permanent pasture for several years, drying and reflooding resulted in a yield increase. Drying and reflooding apparently resulted in a loss of soil nitrogen which was detrimental in the nitrogen-deficient soils and beneficial in the soils that had been in pasture.

Key Words: rice • continuous submergence • flooding and drying • yield • nitrogen uptake • nitrogen loss

1 Contribution from the Agronomy Department and the Rice Experiment Station, Louisiana Agricultural Experiment Station, Louisiana State University, Baton Rouge.

2 Professor, former Graduate Assistant, Assistant Professor, and Associate Professor, Louisiana Agricultural Experiment Station.

Received for publication October 27, 1966.




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Copyright © 1967 by the American Society of Agronomy.