Posted: 01/07/2014 at 15:00
Christine, it is difficult to address your question fully.
a We are mostly in the UK not California
b I do not have an extensive orchard
c I do not rely on well water
d We do not have a drought at the moment in the UK
e I am not conversant with the volume of water you expect to apply to each tree
f I do not know the volume of water each tree would require.