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Published online 1 March 1963
Published in Agron J 55:155-158 (1963)
© 1963 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Availability of Nitrogen Contained in Certain Condensation Products of Reaction of Urea with Formaldehyde1

F. Leslie Long and G. M. Volk2

Synopsis: Nitrogen uptake distribution from sources containing up to 62% of the N as water-insoluble from ureaform was not appreciably improved over watersoluble sources of N. More favorable N uptake distribution was obtained when the water-insoluble N was used alone, especially a product made with U/F mole ratio of 1.50, when applied at 1,000 pounds N per acre. Total yield was approximately doubled and total N recovery tripled as compared to a 100-pound application of soluble N.

1 Florida Agricultural Experiment Station Journal Series, No. 1491. This Work was supported in part by the Nitrogen Division, Allied Chemical Co.

2 Formerly graduate research assistant (now Research Soil Scientist, Southern Tidewater Exp. Sta., ARS, USDA, Fleming, Ga.) and Soil Chemist, respectively.

Received for publication August 6, 1962.




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Copyright © 1963 by the American Society of Agronomy.