Poor crops

 

South east England. One - raspberries.Two - plums.

Autumn Bliss. Plants about five years old. Excellent crops until this year.
Very poor and the leaves on several plants have lost their "green-ness"
Prune to ground level every year about January and feed with Growmore at
that time.

Victoria Plum. About 20 years old.  Never a very good cropper, but a couple
of years ago produced a bumper crop of excellent fruits. Last year about
half-a-dozen and this year nil. Prune two thirds of last years growth in
early Spring.

Any suggestions?

Alistair