Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 18 February 1972:
Vol. 175. no. 4023, pp. 759 - 761
DOI: 10.1126/science.175.4023.759
Prev | Table of Contents | Next

Articles

Air Containing Nitrogen-15 Ammonia: Foliar Absorption by Corn Seedlings

Lynn K. Porter 1, Frank G. Viets Jr. 1, and Gordon L. Hutchinson 1

1 Agricultural Research Service, Soil and Water Conservation Research Division, P. O. Box E, Fort Collins, Colorado 80521

Thirty-day-old corn seedlings, grown in the greenhouse with different concentrations of supplemental nitrate nitrogen, were moved to a constant-temperature growth chamber and sealed in a 560-liter tent made of polyvinyl chloride. The plants were exposed to air containing ammonia labeled with nitrogen-15 (1, 10, and 20 parts per million) for 24 hours and then harvested. The nitrogen-15 content of the tops and roots showed that at 1 part per million 43 percent of the ammonia was absorbed, whereas at 10 and 20 parts per million, 30 percent of the ammonia was absorbed. The results demonstrate that growing plants may be a natural sink for atmospheric ammonia.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Ammonia Volatilization from Senescing Leaves of Maize.
G. D. FARQUHAR, R. WETSELAAR, and P. M. FIRTH (1979)
Science 203, 1257-1258
   Abstract »    PDF »
Atmospheric Ammonia: Absorption by Plant Leaves.
G. L. Hutchinson, R. J. Millington, and D. B. Peters (1972)
Science 175, 771-772
   Abstract »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)