Abstract
ALTHOUGH it has been recognized that a part of the nitrogen in the soil system may be lost in the form of ammonia, the extent of such loss—especially under field conditions—has not yet been satisfactorily determined, largely owing to want of suitable technique. Estimates based on difference in total nitrogen are not sufficiently accurate. Aeration methods are tedious and time consuming: they also disturb the biological conditions in the medium. Extraction and distillation methods are unsuitable, as the estimates thus obtained may not be entirely due to free ammonia. The following method was therefore developed, and was found to work quite satisfactorily.
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SUBRAHMANYAN, V. Estimation of Ammonia Volatilized from Soils. Nature 139, 884 (1937). https://doi.org/10.1038/139884a0
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DOI: https://doi.org/10.1038/139884a0
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