References
- AOAC Official Method 965.09 . 1995 . Nutrients (Minor) in fertilizers. Atomic Absorption Spectrophotometric Method. , 15th ed. , Washington, DC : Association of Official Analytical Chemist .
- Boswell , F.C. , Parker , M.B. and Gaines , T.P. 1988 . Soil zinc and pH effects on zinc concentrations of corn plants . Commun. Soil Sci. Plant Anal. , 20 : 1575 – 1600 .
- Handreck , K.A. 1994 . Effect of pH on the uptake of cadmium, copper, and zinc from soilless media containing sewage sludge . Commun. Soil Sci. Plant Anal. , 25 : 1913 – 1927 .
- Huang , C.‐Y.L. and Schulte , E.E. 1985 . Digestion of plant tissue for analysis by ICP emission spectroscopy . Commun. Soil Sci. Plant Anal. , 16 : 943 – 958 .
- Kuo , S. and Baker , A.S. 1980 . Sorption of copper, zinc, and cadmium by some acid soils . Soil Sci. Soc. Am. J. , 44 : 969 – 974 .
- Mortvedt , J.J. 1992 . Crop response to level of water‐soluble zinc in granular zinc fertilizers . Fert. Res. , 33 : 249 – 255 .
- Mortvedt , J.J. and Gilkes , R.J. 1993 . “ Zinc fertilizers. ” . In Zinc in Soils and Plants , Edited by: Robson , A.D. 33 – 44 . Dordrecht, , The Netherlands : Kluwer Academic Publishers .
- SAS . 1985 . SAS User's Guide: Statistics. , Version 5 ed. , Cary, NC : Statistical Analysis System Institute, Inc. .
- Self , J.R. and Rodriguez , J.B. 1997 . Laboratory manual for soil and plant analysis , Ft. Collins, CO : Soil, Water, and Plant Testing Lab. Colorado State University .
- Singh , B.R. , Narwal , R.P. , Jeng , A.S. and Almas , A. 1995 . Crop uptake and extractability of cadmium in soils naturally high in metals at different pH levels . Commun. Soil Sci. Plant Anal. , 26 : 2123 – 2142 .