2017
DOI: 10.5935/1806-6690.20170049
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Interference from the vertical variation of soil phosphorus and from water stress on growth in maize, the soybean and sunflower

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“…On the other hand, the estimation of P content using Hue as a predictor attribute is mainly associated with the goethite content of the studied soils since even with clay in low quantity, iron oxides (especially goethite) have a high power to fix P (DIEL et al al., 2014). This feature leads the P adsorbed on the surface of crystalline compounds to occur in relatively high amounts in most Brazilian soils, especially in places where climate promotes water stress (ROS et al, 2017). The infeasibility of building pedotransfer functions using the attributes Value and Chroma to estimate P is due to the low concentration of oxides in this soil.…”
Section: Pedotransfer Functionsmentioning
confidence: 99%
“…On the other hand, the estimation of P content using Hue as a predictor attribute is mainly associated with the goethite content of the studied soils since even with clay in low quantity, iron oxides (especially goethite) have a high power to fix P (DIEL et al al., 2014). This feature leads the P adsorbed on the surface of crystalline compounds to occur in relatively high amounts in most Brazilian soils, especially in places where climate promotes water stress (ROS et al, 2017). The infeasibility of building pedotransfer functions using the attributes Value and Chroma to estimate P is due to the low concentration of oxides in this soil.…”
Section: Pedotransfer Functionsmentioning
confidence: 99%