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Science 23 March 1979:
Vol. 203. no. 4386, pp. 1257 - 1258
DOI: 10.1126/science.203.4386.1257
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Articles

Ammonia Volatilization from Senescing Leaves of Maize

G. D. FARQUHAR 1, R. WETSELAAR 2, and P. M. FIRTH 3

1 Department of Environmental Biology, Research School of Biological Sciences, Australian National University, Canberra City 2601
2 Division of Land Use Research, Commonwealth Scientific and Industrial Research Organization, Canberra City
3 Department of Environmental Biology, Research School of Biological Sciences, Australian National University

Ammonia release by plants growing in normal air is reported. Contrary to observations made at high ambient ammonia concentrations, corn plants did not absorb ammonia in normal air but released it as they senesced, even while photosynthesizing actively.

Submitted on November 13, 1978

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