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Absorption of Gaseous Ammonia by Douglas‐Fir
Author(s) -
Pang Patrick C.K.
Publication year - 1984
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1984.03615995004800050045x
Subject(s) - ammonia , absorption (acoustics) , chemistry , volume (thermodynamics) , shoot , douglas fir , environmental chemistry , canopy , diffusion , botany , horticulture , biology , materials science , physics , organic chemistry , thermodynamics , composite material
Absorption of labelled ammonia ( 15 NH 3 ) by excised shoots of Douglas‐fir [ Pseudotsuga menziesii (Mirb.) Franco] was determined under laboratory conditions to increase as the ammonia concentration increased from 0 to 1.09 volume %. Photosynthesis was unaffected by the presence of ammonia except at the highest concentration studied. Although Douglas‐fir is demonstrated to have the potential to absorb ammonia, the amount of ammonia absorbed under field conditions is suggested to be influenced by factors affecting rates of diffusion and mass flow of NH 3 out of the canopy.