Phosphorus pools in Oxisols under shaded and unshaded coffee systems on farmers' fields in Brazil

  title={Phosphorus pools in Oxisols under shaded and unshaded coffee systems on farmers' fields in Brazil},
  author={Irene Cardoso and Bert H. Janssen and Oene Oenema and Thomas W. Kuyper},
  journal={Agroforestry Systems},
Phosphorus (P) is a primary limiting nutrient for crop production in weathered tropical soils. The deficiency is mainly caused by sorption of phosphate onto Al- and Fe- (hydr)oxides. We hypothesise that the distribution of soil P among various pools is influenced by land use. Our objective was to characterise the soil inorganic (Pi) and organic P (Po) pools and to compare the various pools at different depths in agroforestry (shaded) and monocultural (unshaded) coffee cultivation systems. The… CONTINUE READING

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