Listado de Cambio

Nombre Replicación Dimensión Elemento afectado Situación en el estudio base Situación en la replicación Propósitos
Increase in the number of pots per treatment type Soil-2018 Protocolo Diseño experimental There were (3x2x2x2) 24 experimental units (3 Cu levels, 2 JBR, 2 plant types and 2 soil types). For each experimental unit a pot is prepared and repeated 3 times. There are (4x2) 8 experimental units (4 Cu and 2 JBR levels). For each experimental unit 4 pots are prepared and placed in a tray. This is repeated 3 times. Increase the number of pots to obtain sufficient biomass.
Biomass obtained at fruiting stage Soil-2018 Operacionalización Procedimientos de medida Biomass was collected when plants had 2 to 3 true leaves. Biomass was collected when plants reached the fruiting stage. Obtain more biomass as plants complete their vegetative cycle.
Increasing the volume of the pots Soil-2018 Protocolo Material experimental The pots were of the 300 ml tube type. The pots were of the 500 ml bucket type. Achieve greater root development and produce more biomass.
Growing in greenhouses Soil-2019 Contexto Medium The experiment was carried out in a culture chamber The experiment was carried out in a greenhouse Simulate natural conditions.
Mustard is only grown Soil-2019 Protocolo Instrumentos de medida Two plants were used: barley and mustard. Only the mustard plant was used. Use the plant with the highest Cu phytoextraction capacity.
Naturally contaminated soils Soil-2019 Operacionalización Tratamiento Two soil types were sampled: Coria (pH=7.8) and Constantina (pH=5.5). Three soil types were sampled: Miraflores-1 and Miraflores-2 (with Pb, Zn and Cu) and Lebrija (not contaminated by metals) Use naturally contaminated soils. The Miraflores soils are urban gardens with natural contamination and the Lebrija soil is used as a control.
Cu null dose Soil-2019 Operacionalización Tratamiento The doses of Cu added to the soils were 0, 500 and 1000 mg/kg Soils are not artificially contaminated with Cu Experiment with the Cu already in the soil
Number of pots per treatment type Soil-2019 Protocolo Diseño experimental There were (3x2x2x2) 24 experimental units (3 Cu levels, 2 JBR, 2 plant types and 2 soil types). For each experimental unit a pot is prepared and repeated 3 times. There are (3x2) 6 experimental units (3 soils and 2 JBR levels). For each experimental unit 4 pots are prepared forming a block. This is repeated 3 times. Analyse the influence of two naturally contaminated soils and a third uncontaminated one.
biomass at fruiting phase Soil-2019 Operacionalización Procedimientos de medida Biomass was collected when plants had 2 to 3 true leaves. Biomass was collected when plants reached the fruiting stage. Obtain more biomass as plants complete their vegetative cycle.
Increase the volume of pots Soil-2019 Protocolo Material experimental The pots were of the 300 ml tube type. The pots were of the 500 ml bucket type. Achieve greater root development and produce more biomass.