Detalle de Cambio

Cambio #3 Only Constantina soil is used (Soil-2018)
Descripción Originalmente, two soil types were sampled: Coria (pH=7.8) and Constantina (pH=5.5)..
En esta replicación, soil samples were taken only from Constantina..
Con el propósito de use a soil from which the metal can be extracted. In the soil of Coria Cu is strongly absorbed and cannot be phytoextracted..
Dimensión Población, específicamente, type of soil.
Efectos sobre la validez
  • Este cambio incrementa sustancialmente (+3) la validez de constructo porque it ensures that the metal can be phytoextracted, which is the effect to be measured
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