In a message dated 8/9/00 4:26:27 AM Pacific Daylight Time,
[log in to unmask] writes:

> Climatic conditions this year mirror those of the
>  previous season. Conditions of extended blossom
>  are again predicted. Your experience would be
>  appreciated.

    I haven't worked with plums, but I wrote an article several years ago for
apples (and pears would be similar) discussing the pollination of the king
bloom and the rest of the cluster.  The article can be found at:
http://pollinator.com/maxapple1.htm
Attention needs to be focused on the pollination of the king bloom. The rest
become important, only if the bloom is very weak, or the king is not well
pollinated due to frost, etc. Failure to set the king bloom leads to lots of
thinning problems.  An understanding of this is important in any discussion
of pollination windows.

   Sorry, the graphics show the limitations of my ability and equipment at
that point, but I think you can still get the idea.

Dave Green    SC  USA
The Pollination Home Page:    http://pollinator.com