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Phosphorus Status of a Soil Catena under Liberian Evergreen Rain Forest: Results of 31P NMR Spectroscopy and Phosphorus Adsorption Experiments
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| Zeitschriftentitel: | Zeitschrift für Pflanzenernährung und Bodenkunde |
|---|---|
| Personen und Körperschaften: | , |
| In: | Zeitschrift für Pflanzenernährung und Bodenkunde, 156, 1993, 1, S. 61-66 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Wiley
|
| Schlagwörter: |
| author_facet |
Forster, Jürgen C. Zech, Wolfgang Forster, Jürgen C. Zech, Wolfgang |
|---|---|
| author |
Forster, Jürgen C. Zech, Wolfgang |
| spellingShingle |
Forster, Jürgen C. Zech, Wolfgang Zeitschrift für Pflanzenernährung und Bodenkunde Phosphorus Status of a Soil Catena under Liberian Evergreen Rain Forest: Results of 31P NMR Spectroscopy and Phosphorus Adsorption Experiments Soil Science |
| author_sort |
forster, jürgen c. |
| spelling |
Forster, Jürgen C. Zech, Wolfgang 0044-3263 Wiley Soil Science http://dx.doi.org/10.1002/jpln.19931560110 <jats:title>Abstract</jats:title><jats:p>Phosphorus NMR spectra were recorded of the A horizons of a soil catena under vital stands of Liberian tropical high forest. Organic P compounds play a major part in the total P reserves (ca. 1/2 of total extractable P which is 1/5 of total soil P). Thereof, between 3.3 and 5.3 kg orthophosphate diester P per hectare participate in the plant available nutrient pool; similar amounts were calculated for the calcium acetate‐lactate soluble fraction. Persistent orthophosphate monoester P makes up an even greater percentage of soil P (10 to 25 kg ha<jats:sup>−1</jats:sup>). Mineral fertilizer requirements are in the range of 25 to 50 kg per hectare for 10 cm depth (based on a 48 hrs. adsorption experiment) when a soil solution concentration of 0.02 mg L<jats:sup>−1</jats:sup> is considered adequate for the P supply of plants. P sorption can be explained by the amorphous fractions of Al and Fe hydroxides and the percentage of clay. The apparent vitality and absence of P deficiency symptoms of forest trees suggest the existence of an intact, however delicate, natural P cycle.</jats:p> Phosphorus Status of a Soil Catena under Liberian Evergreen Rain Forest: Results of <sup>31</sup>P NMR Spectroscopy and Phosphorus Adsorption Experiments Zeitschrift für Pflanzenernährung und Bodenkunde |
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10.1002/jpln.19931560110 |
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Phosphorus Status of a Soil Catena under Liberian Evergreen Rain Forest: Results of 31P NMR Spectroscopy and Phosphorus Adsorption Experiments |
| title_unstemmed |
Phosphorus Status of a Soil Catena under Liberian Evergreen Rain Forest: Results of 31P NMR Spectroscopy and Phosphorus Adsorption Experiments |
| title_full |
Phosphorus Status of a Soil Catena under Liberian Evergreen Rain Forest: Results of 31P NMR Spectroscopy and Phosphorus Adsorption Experiments |
| title_fullStr |
Phosphorus Status of a Soil Catena under Liberian Evergreen Rain Forest: Results of 31P NMR Spectroscopy and Phosphorus Adsorption Experiments |
| title_full_unstemmed |
Phosphorus Status of a Soil Catena under Liberian Evergreen Rain Forest: Results of 31P NMR Spectroscopy and Phosphorus Adsorption Experiments |
| title_short |
Phosphorus Status of a Soil Catena under Liberian Evergreen Rain Forest: Results of 31P NMR Spectroscopy and Phosphorus Adsorption Experiments |
| title_sort |
phosphorus status of a soil catena under liberian evergreen rain forest: results of <sup>31</sup>p nmr spectroscopy and phosphorus adsorption experiments |
| topic |
Soil Science |
| url |
http://dx.doi.org/10.1002/jpln.19931560110 |
| publishDate |
1993 |
| physical |
61-66 |
| description |
<jats:title>Abstract</jats:title><jats:p>Phosphorus NMR spectra were recorded of the A horizons of a soil catena under vital stands of Liberian tropical high forest. Organic P compounds play a major part in the total P reserves (ca. 1/2 of total extractable P which is 1/5 of total soil P). Thereof, between 3.3 and 5.3 kg orthophosphate diester P per hectare participate in the plant available nutrient pool; similar amounts were calculated for the calcium acetate‐lactate soluble fraction. Persistent orthophosphate monoester P makes up an even greater percentage of soil P (10 to 25 kg ha<jats:sup>−1</jats:sup>). Mineral fertilizer requirements are in the range of 25 to 50 kg per hectare for 10 cm depth (based on a 48 hrs. adsorption experiment) when a soil solution concentration of 0.02 mg L<jats:sup>−1</jats:sup> is considered adequate for the P supply of plants. P sorption can be explained by the amorphous fractions of Al and Fe hydroxides and the percentage of clay. The apparent vitality and absence of P deficiency symptoms of forest trees suggest the existence of an intact, however delicate, natural P cycle.</jats:p> |
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| author | Forster, Jürgen C., Zech, Wolfgang |
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| description | <jats:title>Abstract</jats:title><jats:p>Phosphorus NMR spectra were recorded of the A horizons of a soil catena under vital stands of Liberian tropical high forest. Organic P compounds play a major part in the total P reserves (ca. 1/2 of total extractable P which is 1/5 of total soil P). Thereof, between 3.3 and 5.3 kg orthophosphate diester P per hectare participate in the plant available nutrient pool; similar amounts were calculated for the calcium acetate‐lactate soluble fraction. Persistent orthophosphate monoester P makes up an even greater percentage of soil P (10 to 25 kg ha<jats:sup>−1</jats:sup>). Mineral fertilizer requirements are in the range of 25 to 50 kg per hectare for 10 cm depth (based on a 48 hrs. adsorption experiment) when a soil solution concentration of 0.02 mg L<jats:sup>−1</jats:sup> is considered adequate for the P supply of plants. P sorption can be explained by the amorphous fractions of Al and Fe hydroxides and the percentage of clay. The apparent vitality and absence of P deficiency symptoms of forest trees suggest the existence of an intact, however delicate, natural P cycle.</jats:p> |
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| spelling | Forster, Jürgen C. Zech, Wolfgang 0044-3263 Wiley Soil Science http://dx.doi.org/10.1002/jpln.19931560110 <jats:title>Abstract</jats:title><jats:p>Phosphorus NMR spectra were recorded of the A horizons of a soil catena under vital stands of Liberian tropical high forest. Organic P compounds play a major part in the total P reserves (ca. 1/2 of total extractable P which is 1/5 of total soil P). Thereof, between 3.3 and 5.3 kg orthophosphate diester P per hectare participate in the plant available nutrient pool; similar amounts were calculated for the calcium acetate‐lactate soluble fraction. Persistent orthophosphate monoester P makes up an even greater percentage of soil P (10 to 25 kg ha<jats:sup>−1</jats:sup>). Mineral fertilizer requirements are in the range of 25 to 50 kg per hectare for 10 cm depth (based on a 48 hrs. adsorption experiment) when a soil solution concentration of 0.02 mg L<jats:sup>−1</jats:sup> is considered adequate for the P supply of plants. P sorption can be explained by the amorphous fractions of Al and Fe hydroxides and the percentage of clay. The apparent vitality and absence of P deficiency symptoms of forest trees suggest the existence of an intact, however delicate, natural P cycle.</jats:p> Phosphorus Status of a Soil Catena under Liberian Evergreen Rain Forest: Results of <sup>31</sup>P NMR Spectroscopy and Phosphorus Adsorption Experiments Zeitschrift für Pflanzenernährung und Bodenkunde |
| spellingShingle | Forster, Jürgen C., Zech, Wolfgang, Zeitschrift für Pflanzenernährung und Bodenkunde, Phosphorus Status of a Soil Catena under Liberian Evergreen Rain Forest: Results of 31P NMR Spectroscopy and Phosphorus Adsorption Experiments, Soil Science |
| title | Phosphorus Status of a Soil Catena under Liberian Evergreen Rain Forest: Results of 31P NMR Spectroscopy and Phosphorus Adsorption Experiments |
| title_full | Phosphorus Status of a Soil Catena under Liberian Evergreen Rain Forest: Results of 31P NMR Spectroscopy and Phosphorus Adsorption Experiments |
| title_fullStr | Phosphorus Status of a Soil Catena under Liberian Evergreen Rain Forest: Results of 31P NMR Spectroscopy and Phosphorus Adsorption Experiments |
| title_full_unstemmed | Phosphorus Status of a Soil Catena under Liberian Evergreen Rain Forest: Results of 31P NMR Spectroscopy and Phosphorus Adsorption Experiments |
| title_short | Phosphorus Status of a Soil Catena under Liberian Evergreen Rain Forest: Results of 31P NMR Spectroscopy and Phosphorus Adsorption Experiments |
| title_sort | phosphorus status of a soil catena under liberian evergreen rain forest: results of <sup>31</sup>p nmr spectroscopy and phosphorus adsorption experiments |
| title_unstemmed | Phosphorus Status of a Soil Catena under Liberian Evergreen Rain Forest: Results of 31P NMR Spectroscopy and Phosphorus Adsorption Experiments |
| topic | Soil Science |
| url | http://dx.doi.org/10.1002/jpln.19931560110 |