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Solution‐Culture Studies of Nitrite Toxicity to Plants
Author(s) -
Bingham Frank T.,
Chapman H. D.,
Pugh A. L.
Publication year - 1954
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/sssaj1954.03615995001800030019x
Subject(s) - nitrous acid , nitrite , ammonium , nitrate , chemistry , nitrogen , plant growth , toxicity , nutrient , environmental chemistry , nitrous oxide , ammonium nitrate , botany , inorganic chemistry , biology , organic chemistry
Solution‐culture studies of the toxicity of nitrites to plants were undertaken, using several rapidly growing species as indicator plants. Three to four weeks' growth of the test plants in complete nutrient solutions containing graded amounts of nitrous acid (varying nitrite and pH levels) disclosed that growth inhibition in the pH 4.0, 5.0, and 6.0 solutions was related to the undissociated nitrous acid fraction. Experiments with tomato plants suggested that a given concentration of nitrous acid is less injurious to the plant when the nitrogen assimilable by the plant is supplied as nitrate rather than as ammonium.