Swellings on the shoots of cacao plants deficient in copper


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ABSTRACT AN experiment to induce symptoms of micronutrient-element deficiency on cacao grown in sand-culture was undertaken in 1958. The sand and chemicals were purified as recommended by


Hewitt1 and the water was demineralized by passing it through resin columns. The treatments were done in duplicate; a complete set of treatments was randomized within each of two blocks.


Seeds were taken from the centre portions of Amelonado cacao pods (where they are more uniform); they were washed and planted directly into the sand, three seeds to a plastic pot. The plants


were watered with demineralized water twice a day for one week, after which 500 ml. of nutrient solution was supplied in the mornings and an equal amount of water in the afternoons.


Complete overhead shade was given for one month, after which it was reduced to 50 per cent. Plants were harvested 100 days, 204 days and 321 days after sowing. Access through your


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UNDERSTANDING CALCIUM FUNCTIONALITY BY EXAMINING GROWTH CHARACTERISTICS AND STRUCTURAL ASPECTS IN CALCIUM-DEFICIENT GRAPEVINE Article Open access 25 February 2022 REFERENCES * Hewitt, E. J.,


_“Sand and Water Culture Methods Used in the Study of Plant Nutrition”_ (Comm. Bureau Hort. Plant. Crops, 1952); Tech. Comm. No. 22 (Bradley and Sons, Ltd., Reading). Google Scholar  *


Posnette, A. F., _Trop. Agric. Trin._, 17, 98 (1940). Google Scholar  * Thresh, J. M., _W. African Cacao Res. Inst. Bull._, No. 4, 1–36 (1958). Download references AUTHOR INFORMATION AUTHORS


AND AFFILIATIONS * Department of Agriculture, Kuala Lumpur, Malaya R. G. LOCKARD, P. VAMATHEVAN & S. THAMBOO Authors * R. G. LOCKARD View author publications You can also search for


this author inPubMed Google Scholar * P. VAMATHEVAN View author publications You can also search for this author inPubMed Google Scholar * S. THAMBOO View author publications You can also


search for this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE LOCKARD, R., VAMATHEVAN, P. & THAMBOO, S. Swellings on


the Shoots of Cacao Plants Deficient in Copper. _Nature_ 184, 75–76 (1959). https://doi.org/10.1038/184075b0 Download citation * Issue Date: 04 July 1959 * DOI:


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