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Photosynthesis Under Field Conditions. XA. Assessing Sources and Sinks of Carbon Dioxide in a Corn ( Zea mays L.) Crop Using a Momentum Balance Approach 1
Author(s) -
Lemon E. R.,
Wright J. L.
Publication year - 1969
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1969.00021962006100030022x
Subject(s) - photosynthesis , agronomy , crop , compensation point , zea mays , respiration , carbon dioxide , environmental science , biology , botany , ecology , transpiration
In a previous communication we described a meteorological method of assessing the vertical distribution of photosynthesis and respiration activity in a corn crop. The method, however, is tedious. Here we describe a much simpler method. Results indicate that all the leaves of a corn crop appear to follow the same near‐linear light response curve, at least above the compensation point. Below the compensation point, all leaves evidently respire very little.