Effect of Pressure of Atmosphere on Development of Red Clover

Abstract

SINCE 1932, studies in this laboratory have investigated the effect of partial pressures of various gases on the nitrogen fixation process in inoculated leguminous plants. The results, which throw considerable light on certain properties of the mechanism employed in this biological process, will be reported in detail in a future publication. In connexion with this research, observations which may be of general interest were made on the effect of growing clover under a fairly wide rango of atmospheric pressures. Little work appears to have been reported on this aspect of plant physiology; discussion of the effect of gas pressures in most texts is restricted to the effect of partial pressures of oxygen and carbon dioxide in short-time experiments.