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Bergmann, C. ; Stuhrmann, Matthias ; Zech, Wolfgang:
Site factors, foliar nutrient levels and growth of "Cordia alliodora" plantations in the humid lowlands of Northern Costa Rica.
In: Plant and Soil.
Bd. 166
(1994)
.
- S. 193-202.
ISSN 1573-5036
DOI: https://doi.org/10.1007/BF00008333
Abstract
Within the perhumid, Atlantic lowlands of northern Costa Rica, Cordia alliodora plantations were studied in orderto explain the observed pattern of growth irregularities. The soils, that were partly used as pastures over longperiods, could be classified roughly into two units: (i) red, deeply weathered, slightly acidic soils from Mg-enrichedparent material and (ii) brown, strongly acidic soils with high saturation of exchangeable A1 (up to 80%).Leaf analysis revealed that Cordia is a highly demanding species in respect to macronutrients. Poorly growingtrees in slope position suffered from an insufficient supply of N and P. K/Mg ratios of chlorotic leaves are verylow. Soil analysis showed that nutrient deficiencies were related to (i) insufficient soil nutrient reserves of the poor,tropical soils or (ii) to an inhibition of nutrient uptake by soil physical or chemical factors.All sites are characterized by very low K reserves and losses of nutrients that are organically bound (N, P) causedby erosion. In the Mg-rich red soils, low amounts of K lead to K/Mg imbalances. Soil compaction caused bycattle grazing occurs on both soil units. It negatively influences the root development of Cordia, and hence nutrientuptake. In the brown soils, high amounts of exchangeable A1 hinder a sufficient supply of nutrients (e.g. P) to theassimilation organs.
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| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Zusätzliche Informationen: | BAYCEER6852 |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Lehrstuhl Bodenökologie Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER Fakultäten Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften Forschungseinrichtungen Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik |
| Eingestellt am: | 30 Okt 2015 07:19 |
| Letzte Änderung: | 28 Okt 2024 12:02 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/21034 |