Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-18T16:20:49.232Z Has data issue: false hasContentIssue false
  • English
  • Français

Cation-anion relationships in crop nutrition

Published online by Cambridge University Press:  27 March 2009

R. K. Cunningham  and
A. Karim
R. K. Cunningham
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts.
A. Karim
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts.
Get access Rights & Permissions [Opens in a new window]

Extract

Italian rye-grass was grown in the greenhouse in clay loam soil in winter 1962 with several rates of a nutrient solution containing NO3-N and P, K, Ca and Mg to see whether the grass had maximum values for sums of the cations and anions (σ cations, σ anions). Two other experiments were done in summer 1962 with a similar nutrient solution containing either NO3-N alone or NO3-N plus NH4-N.

At the same level of added nutrients summer yields of grass were about twice those in winter and there was little difference when nutrient mixtures with NO3-N+NH4-N or with NO3-N alone were used. The sum of the cations (m-equiv./lOO g. dry matter) in the grass was positively correlated

Type
Research Article
Information
The Journal of Agricultural Science , Volume 64 , Issue 2 , April 1965 , pp. 229 - 233
Copyright
Copyright © Cambridge University Press 1965

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bear, F. E. (1950). Agron. J. 42, 176.CrossRefGoogle Scholar
Bear, F. E. & Prince, A. L. (1945). J. Amer. Soc. Agron. 37, 217.CrossRefGoogle Scholar
Cunningham, R. K. & Nielsen, K. F. (1963). Nature, Lond., 200, 1344.CrossRefGoogle Scholar
Cunningham, R. K. (1964 a). J. Agrie. Sci. 63, 97.CrossRefGoogle Scholar
Cunningham, R. K. (1964 b). J. Agric. Sci. 63, 103.CrossRefGoogle Scholar
Cunningham, R. K. (1964 c). J. Agric. Sci. 63, 109.CrossRefGoogle Scholar
Dijkshoorn, W. (1957 a). Neth. J. Agric. Sci. 5, 81.Google Scholar
Dijkshoorn, W. (1957 b). Neth. J. Agric. Sci. 5, 233.Google Scholar
van Italie, Th. B. (1938). Soil Sci. 46, 175.CrossRefGoogle Scholar
Karim, A. & Cunningham, R. K. (1963). Rep. Rothamst. Exp. Sta. for 1962, p. 65.Google Scholar
Wallace, A., Toth, S. J. & Bear, F. E. (1948). J. Amer. Soc. Agron. 40, 80.CrossRefGoogle Scholar
Woodbridge, C. G. (1955). Canad. J. Agric. Sci. 35, 350.Google Scholar