PROGRAMME FOR CHERRY TREES- BY FRED FIELD
here to download a print ready pdf of
What do we need to protect the trees from?
1. Black Aphid which usually starts to appear around
late October early November. These have pupated in the
ground over winter and hatched out wingless and crawl up the
tree, and invest the newest softest leaves they then
pupate again hatch with wings and fly away only to appear back
in March/April, invade the tree again, then pupate in the
ground from where they first started and the cycle goes on.
Recommend solution is broadcast raw course sulphur around the
base of the trees to break the cycle. For protection of
trees most insecticides or pirimor.
Aphids bring a host of viruses problems which severely distort
growth and can cause the growth to become terminal.
2. Cherry pear slug - Black slug-like larvae (has
a repulsive odour) appears mid summer to autumn - again most
insecticides - especially lime sulphur - this has a hardening
effect on leaf.
3. Leaf Roller Caterpillar can appear thru summer
and like pear slug are veracious consumers of leaves and the
above solution applies to these.
4. There are other marauding insects such as Grass
Grub, Beatles, Mites, Thrips, Weevils, which can damage
root systems a lot of these appear at different times and are
generally hard to detect until the damage becomes
apparent. I have found that Lime sulphur applied
regularly is the most effective insecticide - it is also a
Commercial Growers 50 years ago and longer usually applied 1
Sulphur to 10 of Water for dormant fruit trees and 1 to 15 at
bud movement and 1 to 120 when in leaf. I have advised
1 to 200 when trees are in leaf but can be increased to
1 to 100 in autumn and winter and applied every 4
When using sprays it is also useful to use stickers or
spreaders, these break the surface tension down, they can be
purchased at Hort Suppliers. One that comes to
mind is calcium caseinate, (a by product of skim milk
With the management of Cherry Orchards in Tunnels, is more
simplified with control of environmental conditions.
Weak diseased trees are always a target for insect infestation
and wet cold conditions will compound disease
problems. So more spray programmes are required
especially for pseudomonas (blast) - copper
To Place this in some sort of spraying order would recommend
August pre emergence of buds
Lime Sulphur 1 part to 30 Water
This helps to control earwigs, slaters etc from eating
September Bud break or full blossom
Use Folicur 1 teaspoon per 50 Litres
To eliminate brown rot or lurking botrytis - this goes for
Tunnel house and outside growing...
This should only be applied once at this point of times then
again 3 weeks prior to harvest...
October Lime Sulphur 1 to
Pirimor and insecticide spray to be applied
November Lime Sulphur 1 to 200
December Lime Sulphur 1 to 200
January Lime sulphur 1
sulphur 1 to 200
April, May, June & July Lime
Sulphur 1 to 150
Copper Oxychloride at leaf fall and dormancy in June.
Remember healthy trees will take care of most major problems
and beware of merchants trying to sell you the latest and
greatest wonder cure. Stick to tried and true solutions
that have worked for the last 100 years.
Copyright © Fred
Field/ Field Horticulture