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Cation-anion relationships in crop nutrition: II. Factors affecting the ratios of sum of the cations: sum of the anions in Italian rye-grass

Published online by Cambridge University Press:  27 March 2009

R. K. Cunningham
R. K. Cunningham
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts.
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Extract

The ratios of S cations (Na + K + Ca + Mg in m-equiv./100g.):2 anions (N + P + Cl + S in mequiv./ lOO g.), R values, in over 100 samples of Italian rye-grass grown in the field ranged from 0-33 to 0-92. Italian rye-grass, grown in the greenhouse at 11 levels of a nutrient mixture, had R values ranging from 0-58 to 1-36.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 63 , Issue 1 , August 1964 , pp. 103 - 108
Copyright
Copyright © Cambridge University Press 1964

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