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Ionic Balance and Corn Growth in a Port Byron Soil 1
Author(s) -
Blanchar R. W.,
Hossner L. R.
Publication year - 1968
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/agronj1968.00021962006000060005x
Subject(s) - chemistry , potassium , magnesium , shoot , zea mays , human fertilization , fertilizer , agronomy , zoology , inorganic chemistry , biology , organic chemistry
Corn ( Zea mays ) was grown on a Port Byron soil treated with either NH + 4 —N or NO − a —N and various rates of CaCl 2 ·2H 2 O. The corn tissue was analyzed for Ca 2+ , Mg 2+ , K + , N, P, S, Cl, and NO − a —N. Equilibrium extracts of the soil were analyzed for Ca 2+ , Mg 2+ , K + , and electrical conductivity. The organic anion content of corn was determined as the difference between inorganic cations and anions. The organic anion content varied from 252 to 751 µeq/g plant due to changes in N fertilizer and CaCl 2 ·2H 2 O addition. The growth of corn was not related to organic anion content. Plant weight was inversely proportional to the negative logarithm of the ionic strength of the soil solution. Fertilization with NH + 4 —N resulted in an increased SO= 4 content of the plant in the absence of CaCl 2 ·2H 2 O. Calcium content of the plant was a linear function of pCa in the soil solution. Magnesium and potassium contents of the plant tissue were related to the functions pMg—0.5pU and pK‐pU of the soil solution, respectively.