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Phaseolus vulgaris Growth in an Ammonium‐Based Nutrient Solution with Variable Calcium 1
Author(s) -
Fenn L. B.,
Taylor R. M.,
Horst G. L.
Publication year - 1987
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1987.00021962007900010018x
Subject(s) - phaseolus , ammonium , chemistry , nutrient , calcium , absorption (acoustics) , potassium , urea , volatilisation , horticulture , agronomy , botany , biology , biochemistry , physics , organic chemistry , acoustics
Field observations of tests where Ca was added with urea fertilizers have suggested a synergistic effect on plant growth beyond that expected from Ca control of NH 3 volatilization and the nutritive effect of Ca. A study was designed to test the hypothesis that Ca stimulates NH 4 absorption by plants. Greenhouse experiments were conducted with Phaseolus vulgaris (Great White Northern bean) in quartz sand with 5% CaCO 3 to determine the effects of variable Ca concentration on plant growth in an NH 4 ‐based nutrient solution. Ammonium absorption increased with increasing Ca to 13 mmol L −1 , as indicated by decreasing NH 4 concentration in the leachate, and increased plant growth. Tissue N was unchanged as solution Ca concentration increased. Potassium accumulation in the plant behaved much like N, whereas the Ca level increased with increasing solution Ca concentrations.