Abstract
PREVIOUS attempts1,2 to induce symptoms of calcium and phosphorus deficiency in oil palm seedlings grown in water-washed quartz sand have failed. Symptoms have now been induced by growing oil palm seedlings in quartz sand purified by treatment with hot 1 per cent sodium carbonate and hot, constant-boiling hydrochloric acid.
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References
Broeshart, H., et al., Plant and Soil, 8, 189 (1957).
Bull, R. A., Fifth Ann. Rep. W. Afric. Inst. for Oil Palm Res. (1957).
Hewitt, E. J., Tech. Comm. No. 22, Comm. Bur. Hort. and Plant. Crops (1952).
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BULL, R. Symptoms of Calcium and Phosphorus Deficiency in Oil Palm Seedlings. Nature 182, 1749–1750 (1958). https://doi.org/10.1038/1821749a0
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DOI: https://doi.org/10.1038/1821749a0
