01968naa a2200265 a 450000100080000000500110000800800410001902400590006010000160011924501040013526000090023952011980024865000160144665000120146265000130147465000170148765300090150465300240151365300090153770000190154670000250156570000210159070000250161177300660163621406482022-03-08       2021    bl uuuu     u00u1 u    #d7 ahttp://dx.doi.org/10.18406/2316-1817v13n3202116392DOI1 aFONTANA, A.  aPhosphorus adsorption capacity in sandy textured soils with built fertility.h[electronic resource]  c2021  aThe specific adsorption of phosphorus in minerals from the clay fraction of the soil, such as Fe and Al oxyhydroxides, is responsible for the decrease in the availability of this element for plants. In Brazil, this condition is studied substantially in medium to very clayey textured soils, whose adsorption activity is expressive. The aim of this study was to evaluate the maximum phosphorus adsorption capacity (CMAP) in sandy-textured soils with fertility built in the Cerrado biome. Areas with representative soils were selected in the cities Luís Eduardo Magalhães (LEM / BA) and Guaraí (TO), with the following vegetation cover: a) LEM: natural vegetation and cotton; b) Guaraí: natural vegetation and soybean. Soil samples were collected in the 0-20 cm and 60-80 cm layers, in which chemical and physical analyzes were performed periodically, as well as analyzes related to phosphorus adsorption such as Prem and CMAP and PESN. Prem contents are higher in the 0-20 cm layer for the LEM region. The CMAP is not very expressive in the soils of the two studied regions, with the Guaraí soils having higher relative adsorption potential due to the higher values of the CMAP/clay ratio.  aSandy soils  aFosfato  aFósforo  aSolo Arenoso  aCMAP  aPhosphate retention  aPrem1 aPEREIRA, M. G.1 aSANTOS, J. J. S. dos1 aDONAGEMMA, G. K.1 aSANTOS, O. A. Q. dos  tRevista Agrogeoambientalgv. 13, n. 3, p. 520-529, set. 2021.