Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 1 September 1963
Published in Agron J 55:441-443 (1963)
© 1963 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Relationship Between NO3-N Production, Dry-Matter Production and N Responses on Coastal Plain Soils1

C. D. Welch and W. V. Bartholomew2

Synopsis: Nitrate-N production appeared to give a better estimate of the availability of soil N than Kjeldahl N or organic matter. Higher correlation coefficients were obtained for data from well-drained than from poorly drained soils. Comparisons between results for organic matter or Kjeldahl N and corn yield responses from N applications under field conditions were not significant.

1 Contribution from the Soil Science Department, North Carolina State College. Published with the approval of the Director of Research as paper No. 1562 of the Journal Series. Presented before Div. IV, Soil Sci. Soc. Am. Meetings November 29, 1961, St. Louis, Mo.

2 Agronomist, North Carolina Department of Agriculture, and Professor of Soil Science, North Carolina State College, respectively.

Received for publication January 30, 1963.




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Journal of Natural Resources
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Environmental Quality		 The Plant Genome
Copyright © 1963 by the American Society of Agronomy.