In case of off-situ experimental plot (in laboratory conditions) the slope can change between simulation runs eventhough the plot remains unchanged - the soil was not changed, no tillage operation was performed, no other properties were altered.
How about there's a run (maybe sequence?) entity property "slope_steepness" that is NULL be default and if set it overrides the plot's slope steepness?
In case of off-situ experimental plot (in laboratory conditions) the slope can change between simulation runs eventhough the plot remains unchanged - the soil was not changed, no tillage operation was performed, no other properties were altered.
How about there's a run (maybe sequence?) entity property "slope_steepness" that is NULL be default and if set it overrides the plot's slope steepness?