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Euonymus Gall



P_crowngall

Euonymus Gall

Usually appear in

All year


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Caused By:-     The Bacteria Agrobacterium tumefaciens

Description

This disease is caused by the same bacteria that causes Crown Gall. It is characterized by the growth of galls (tumor-like swellings) on roots and/or stems. Over 600 species of plants are susceptible to crown gall. The galls are usually rounded with a rough surface which darken and may split with age. Crown galls are a solid mass of tissue all the way through, unlike insect galls which are usually spongy inside. Some stem dieback and stunted growth or perhaps reversion to another type of Euonymus may occur, because the galls disrupt the movement of water and nutrients between roots and leaves. Some Euonymus growth in established plants may not be affected, but young plants are more susceptible to damage from this bacteria.
See also these other Galls ACER GALL MITES, ACORN GALL MITES, AZELAE GALL, BEECH GALL MIDGE, BLACKCURRANT GALL MIDGE, BROOM GALL MIDGE, CAMELLIA GALL, CROWN GALL, FELT GALL MITES, FORSYTHIA GALL, GALLS, GALL WASP, GLEDITSIA POD GALL MIDGE, HEMEROCALLIS GALL MIDGE, HAWTHORN BUTTON TOP GALL MIDGE, KNOPPER GALL OF ACORNS, LEAFY GALL, LIME NAIL GALL MITE, OAK GALL WASP, PEAR LEAF BLISTER MITE, PINAPPLE GALL ALDELGID, PLUM GALL MIDGE, ROBINS PINCUSHION, TURNIP GALL WEEVIL, VINE ERINOSE GALL MITE, VIOLET GALL MIDGE, WILLOW BEAN GALL SAWFLY.


Control

As the bacteria causing this disease is the same as that causing crown gall the same control measures are needed. Plants should be carefully examined before introducing them to your garden. You should avoid those with suspicious swellings on the roots or stems. In the case of crown gall it is worth the extra checks to prevent Crown Gall than the cost of curing it.
The infected plants is to be destroyed and plants that are not susceptible to the gall grown, like like Boxwood (Buxus spp.) and holly (Ilex spp.), should be planted in that area for up to three years. This should get rid of the infection.
Fumigating the soil with chloropicrin or methyl bromide is possible.
Good hygiene when pruning such as dipping the pruners in a weak solution of bleach will prevent spreading the disease.
Biological control is possible for a number of fruit and ornamental crops. This involves inoculating newly grafted or recently lifted transplants or cuttings with a bacterium (Agrobacterium radiobactor) that is closely related to the one causing crown gall.
This prevents the crown gall bacterium from infecting wounds on the plant.

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