1. Arnon, D. I. 1949 Copper enzymes in isolated chloroplasts. Polyphenol oxidase inBeta vulgaris. Plant Physiol.24, 1–5.
2. Benne and Snyder 1944Cf. Hawk, P. B., Oser, B. L. and Summerson, W. H. 1948In Practical Physiological Chemistry. The Blakiston Company U.S.A.
3. Black, C. C. Jr. and Mayne, B. C. (1970) P 700 activity and chlorophyll content of plants with different photosynthetic carbon dioxide fixation cycle. Plant Physiol.45, 738–741.
4. Chapman, L. S. 1977 Fertilizing cane — What are our objective? Proc. 44th Conf. Queensland Soc. Sugarcane Tech., 155–160.
5. Gilfillan, I. N. and Jones, W. W. (1968) Effect of iron and managanese deficiency on the chlorophyll, amino acid and organic acid status of leaves ofMacadamia. Proc. Am. Soc. Hortic. Sci.93, 210–214.