References
- Arnon , D. I. 1939 . Soil Sci. , 48 : 295 – 307 .
- Ayoub , A. T. and Ishag , H. M. 1974 . J. Agric. Sci. , 82 : 339 – 342 .
- Bear , F. E. and Prince , A. L. 1945 . J. Amer. Soc. Agron. , 37 : 217 – 222 .
- Clarkston , D. T. 1971 . J. Expt. Bot. , 23 : 837 – 851 .
- Drosdoff , M. , Barrows , H. L. , Lagasse , F. S. and Shear , C. B. 1955 . Proc. Amer. Soc. Hort. Sci. , 65 : 32 – 40 .
- Edwards , J. H. and Horton , B. D. 1977 . J. Amer. Soc. Hort. Sci. , 102 : 459 – 461 .
- Edwards , J. H. , Horton , B. D. and Kirkpatrick , H. C. 1976 . J. Amer. Soc. Hort. Sci. , 101 : 139 – 142 .
- Epstein , E. 1972 . Mineral nutrition of plants: principles and perspectives , 1 – 412 . New York : John Wiley and Sons, Inc. .
- Foy , C. D. and Brown , J. C. 1963 . Soil Sci. Soc. Amer. , 27 : 403 – 407 .
- Frolich , E. , Wallace , A. and Lunt , O. R. 1966 . Current topics in plant nutrition Edited by: Wallace , A. 120 – 126 . Los Angeles, Calif
- Rhue , R. D. and Grogan , C. O. 1977 . Agron. Jour. , 69 : 755 – 760 .
- Schmehl , W. R. , Peech , M. and Bradfield , R. 1952 . Soil Sci. , 73 : 11 – 21 .
- Walker , R. B. and Grover , R. 1960 . Plant Physiol. , 35 (Suppl.) : 22
- Wallace , A. and collaborators . 1971 . Regulation of the micronutrient status of plants Edited by: Wallace , A. 69 – 81 . Los Angeles, Calif
- Wallace , A‐ and collaborators . 1971 . Eegulation of the Micronutrient Status of Plants Edited by: Wallace , A. 53 – 57 . Los Angeles, Calif
- Wallace , A. 1979 . Commun. Soil Sci. Plant Anal. , 10 (l&2) : 473 – 479 .
- Wallace , A. , Bomney , E. M. and Alexander , G. V. 1974 . Comm. Soil Sci. Plant Anal. , 5 (l) : 45 – 50 .
- Wallace , A. and Ashcroft , R. T. 1956 . Proc. Amer. Soc. Hort. Sci. , 68 : 227 – 233 .