Published June 1975
| Version v1
Report
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The behavior of P in tropical soils
Creators
- 1. Sao Paulo Univ., Piracicaba (Brazil). Escola Superior de Agricultura Luiz de Queiroz
- 2. Comissao Nacional de Energia Nuclear de Brasil, Rio de Janeiro
Description
The experimental data showed that the whole P retention process depends on the levels and the reactivities of the iron oxides in the soils. It was established that the retention mechanism occurs in 2 or 3 stages and it is related to both the maximum adsorption and the absorbent capacity of the several soils as determined by the Langmuir and the Freundlich equations respectively. The final step of the P interaction which shows small rate constants is due to a diffusion of the phosphate ions from the oxide surface to the internal layers producing more stable iron-phosphate compounds
Availability note (English)
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9357445.pdf
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Additional details
Additional titles
- Subtitle (English)
- II. Retention kinetics
- Original title (Portuguese)
- Comportamento do fosforo em solos tropicais
- Original subtitle (Portuguese)
- II. Cinetica de retencao.
Publishing Information
- Imprint Pagination
- 22 p.
- Report number
- CENA-BC--032
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 9357445
- Subject category
- S58: GEOSCIENCES;
- Is Lead record
- Yes
- Descriptors DEI
- ADSORPTION; BRAZIL; KINETICS; PHOSPHORUS; SEDIMENTATION; SOILS; TROPICAL REGIONS
- Descriptors DEC
- DEVELOPING COUNTRIES; ELEMENTS; NONMETALS; SOUTH AMERICA