CO(2) Exchange and Dinitrogen Fixation of Subterranean Clover in Response to Light Level |
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| Authors: | Silsbury J H |
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| Affiliation: | Department of Agronomy, Waite Agricultural Research Institute, The University of Adelaide, Glen Osmond, South Australia 5064. |
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| Abstract: | Small swards of nodulated subterranean clover plants were grown in pots to a common dry weight under controlled conditions. The rooting medium was a porous calcined clay. All mineral nutrients except nitrogen were supplied daily in solution. Pots then were placed in an assimilation chamber for 3 days for the measurement of net CO2 exchange at light levels ranging from 0.1 to 2.0 millieinsteins per square meter per second. N2-fixation (acetylene reduction) of each pot was measured subsequently. H2-evolution and N2-fixation were measured for similar treatments in separate experiments using smaller pots. |
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