John Harris [jfhdally@agn.net.au] asked
>Q: In your work on luxury consumption have you found that this
>only applies to the more mobile elements or have you redefined
>this. Most of the works I have on the subject suggest that
>calcium, iron, sulfur, boron, copper & manganese (amongst others)
>cannot be re-translocated. Have you found this to be the case?

A: I have not worked with other nutrients in this area, but that is what
I have also observed in the literature. If a nutrient deficiency symptom
shows up in the tip or growing point of a plant, the nutrient is not
mobile.

Paul