Ammonia Volatilization from Senescing Leaves of Maize

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Science  23 Mar 1979:
Vol. 203, Issue 4386, pp. 1257-1258
DOI: 10.1126/science.203.4386.1257


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.