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Fraccionamiento de fósforo en suelos cultivados con arroz por largos períodos de tiempo. Ii. Relación fósforo orgánico-inorgánico
| Content Provider | Semantic Scholar |
|---|---|
| Author | Subero, Neudis Ramírez, Ricardo Sequera, Omaira Parra, Julio C. |
| Copyright Year | 2016 |
| Abstract | espanolLa produccion de arroz en el sistema de riego del Rio Guarico en Venezuela data de muchos anos, durante los cuales se ha venido aplicando fertilizantes fosfatados en forma continua. Las fracciones residuales de fosforo organico fueron estudiadas en 43 muestras de suelos fertilizados entre 5 y 50 anos continuos por medio de una extraccion secuencial. Los datos de P inorganico fueron mostrados en una publicacion anterior. El fosforo organico total (PoT) fue aproximadamente 4,3 veces mas bajo que el P inorganico total (PiT); sin embargo, entre el 50,6 y 84,7 % del P labil correspondio al P organico. Contrariamente, las fracciones organicas moderadamente labil (PiML) y ligeramente labil (PiLL) fueron menos abundantes que las correspondientes inorganicas (PoML y PoLL). El contenido de materia organica de los suelos mostro una relacion lineal significativa y positiva con el PoML, pero esta relacion fue mas baja con el PoLL y Po ocluido. EnglishRice production in the irrigation system of Guarico River in Venezuela dates back more than 50 years, during which phosphate fertilizer has been applied continuously. The residual fractions of organic phosphorus were studied in 43 soil samples, fertilized between 5 and 50 continuous years. A sequential P extraction procedure was carried out in each soil sample. Data of inorganic P were reported in a previous paper. Total organic P (PoT) was approximately 4.3 times lower than total inorganic P (PiT); however, between 50.6 and 84.7 % of P labile, corresponded to organic P. On the contrary, moderately and slightly labile organic fractions (PoLL and PoML) were less abundant than the corresponding inorganic fractions (PiML and PiLL). The organic matter content of the soils showed a significant positive linear relationship with the PoML, but a lower relationship with PoLL and occluded Po. |
| Starting Page | 81 |
| Ending Page | 86 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| Volume Number | 28 |
| Alternate Webpage(s) | http://www.ucla.edu.ve/bioagro/Rev28(2)/2.%20ms%201505.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |