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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
20/06/1991 |
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Data da última atualização: |
20/01/2025 |
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Autoria: |
GILLESPIE, A. R.; POPE, P. E. |
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Título: |
A comparison of tree rock phosphates for use forest soils. |
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Ano de publicação: |
1990 |
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Fonte/Imprenta: |
Fertilizer Research, v. 23, n. 3, p. 141-147, 1990. |
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Idioma: |
Inglês |
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Conteúdo: |
The use of rock phosphates in forestry is an important and economic alternative to soluble phosphorus sources for some soils. Interactions of tree rhizosphere processes and rock phosphates may increase availability and uptake efficiency, but interactions of rock phosphates in different forest soils may reduce availability. This study examined phosphorus diffusion rates in three forest soils fertilized with either of three rock phosphates of varying solubility. Diffusion rates were calculated from phosphorus buffer powers determined by desorption in pH adjusted solutions. Diffusion rates and rock phosphate solubilities were compared to quantities of phosphorus in whole-seedlings of black locust (Robinia pseudoacacia L.) grown in the experimental soils fertilized with the experimental rock phosphates. Results indicated that phosphorus uptake varied by rock phosphate solubility, but the pattern was different for each soil. Increasing solubility did not always increase phosphorus uptake. Diffusion rates with and without pH adjustment proved superior in predicting phosphorus availability in each soil and therefore may provide a better index for forestry use than rock phosphate solubility. |
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Palavras-Chave: |
Forest. |
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Thesagro: |
Fosfato; Solo Florestal. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01667naa a2200169 a 4500
001 1279545
005 2025-01-20
008 1990 bl uuuu u00u1 u #d
100 1 $aGILLESPIE, A. R.
245 $aA comparison of tree rock phosphates for use forest soils.$h[electronic resource]
260 $c1990
520 $aThe use of rock phosphates in forestry is an important and economic alternative to soluble phosphorus sources for some soils. Interactions of tree rhizosphere processes and rock phosphates may increase availability and uptake efficiency, but interactions of rock phosphates in different forest soils may reduce availability. This study examined phosphorus diffusion rates in three forest soils fertilized with either of three rock phosphates of varying solubility. Diffusion rates were calculated from phosphorus buffer powers determined by desorption in pH adjusted solutions. Diffusion rates and rock phosphate solubilities were compared to quantities of phosphorus in whole-seedlings of black locust (Robinia pseudoacacia L.) grown in the experimental soils fertilized with the experimental rock phosphates. Results indicated that phosphorus uptake varied by rock phosphate solubility, but the pattern was different for each soil. Increasing solubility did not always increase phosphorus uptake. Diffusion rates with and without pH adjustment proved superior in predicting phosphorus availability in each soil and therefore may provide a better index for forestry use than rock phosphate solubility.
650 $aFosfato
650 $aSolo Florestal
653 $aForest
700 1 $aPOPE, P. E.
773 $tFertilizer Research$gv. 23, n. 3, p. 141-147, 1990.
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| 1. |  | SATRAPA, R.; VIANA, J.; DANTAS, F. L.; MARCELINO, R. R.; VASCONCELOS, N. L.; LUCKENR, M. N.; ESTEVES NETO, J.; CARNEIRO JUNIOR, J. M.; SATRAPA, R. A.; CAVALCANTE, F. A. Estabelecimento de um protocolo de sincronização da ovulação para transferência de embriões em tempo fixo para o Programa de Melhoramento Genético de Gado Leiteiro no Estado do Acre. Rio Branco, AC: Embrapa Acre, 2012. 8 p. (Embrapa Acre. Circular técnica, 65).| Biblioteca(s): Embrapa Acre. |
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