Effect of rare earth elements on growth and nutrition of coconut palm and root competition for these elements between the palm and calotropis gigantea

Absorption of rare earth elements (REEs) namely lanthanum (La), cerium (Ce), praseodymium (Pr), and neodymium (Nd) by coconut, competition between coconut and Calotropis gigantea L. for these elements in mixed culture and the effects of the REEs on growth and nutrition of the palm were studied in a...

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Bibliographic Details
Published inJournal of plant nutrition Vol. 23; no. 3; pp. 329 - 338
Main Authors Wahid, P. A., Valiathan, M. S., Kamalam, N. V., Eapen, J. T., Vijayalakshmi, S., Prabhu, R. Krishna, Mahalingam, T. R.
Format Journal Article
LanguageEnglish
Published Philadelphia, NJ Taylor & Francis Group 01.03.2000
Taylor & Francis
Subjects
Agronomy. Soil science and plant productions
Biological and medical sciences
Economic plant physiology
Fundamental and applied biological sciences. Psychology
Mineral nutrition
Nutrition. Photosynthesis. Respiration. Metabolism
Monocotyledones
Neodymium
Cocos nucifera
Growth
Toxicity
Asclepiadaceae
Cerium
Sandy soil
Dose activity relation
Absorption
Mineral fertilization
Dicotyledones
Angiospermae
Interspecific competition
Intraspecific comparison
Lanthanum
Praseodymium
Nutrition
Root
Multipurpose tree
Oil plant(vegetal)
Trace element
Phytotoxicity
Spermatophyta
Palmae
Biological accumulation
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Summary:Absorption of rare earth elements (REEs) namely lanthanum (La), cerium (Ce), praseodymium (Pr), and neodymium (Nd) by coconut, competition between coconut and Calotropis gigantea L. for these elements in mixed culture and the effects of the REEs on growth and nutrition of the palm were studied in a pot culture. At a low rate of application, REEs promoted root growth in coconut, but at a higher level, absorption of phosphorus (P) and zinc (Zn) by the palm was reduced significantly. Absorption of REEs by the palm tended to increase with increasing application rates, but the increases were not statistically significant. Although Calostropis gigantea accumulated more REEs per unit dry matter than coconut, it failed to compete effectively for REEs in mixed culture with coconut. However, in mixed culture, coconut depressed the absorption of REEs by Calostropis gigantea.
ISSN:0190-4167
1532-4087
DOI:10.1080/01904160009382019