Detalle de Cambio

Cambio #6 Reduction of soil ageing time (Soil-2018)
Descripción Originalmente, soil ageing time (from Cu application to sowing) was 45 days..
En esta replicación, the ageing time was 15 days..
Con el propósito de avoid excessive fixation of Cu to the soil which hinders its phytoextraction..
Dimensión Operacionalización, específicamente, tratamiento.
Efectos sobre la validez
  • Este cambio incrementa moderadamente (+2) la validez de constructo porque the plant extracts the metal more easily as it is not so retained and reflects the construction better.
  • Este cambio incrementa moderadamente (-2) la validez externa porque it reduces the generalisation of results to contaminated soils that have been contaminated for a longer period of time.
Comentarios It affects the way Cu is applied, which is part of the treatment.
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