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Turnip Gall Weevil



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Turnip Gall Weevil

Usually appear in

Spring and winter


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Caused By:-     The Weevil Ceuthorhynchus pleurostigma

Description

The Turnip Gall Weevil Ceuthorhynchus pleurostigma attacks turnips, but it also attacks other members of the brassica family such as cabbages, rape, cauliflower and mustard.
The feeding activities of the larvae of this weevil simulates the plant to produce swollen galls, up to 1cm, on the roots which enclose the larvae that feeds and lives inside the gall.
The galls can be mistaken for Club Root disease. Except that each gall has one larvae inside it or has a pinhead hole where the weevil has emerged from the gall.
The Larva is 3 to 4 mm in length, curved, whitish, with head brown and can be found inside the gall.
The adult feeds on shoots, flower buds or flowers of the host plant where it lays its egg in the plant root at soil level.
There is only one generation per year, but there are two types summer and winter ones. The first type overwinters as a larva while the latter passes winter as an adult weevil and begins laying eggs in spring.
On leafy brassicas this pest does not cause significant distress, but on root brassicas like turnips it is disfiguring.
See also these other Galls ACER GALL MITES, ACORN GALL MITES, AZELAE GALL, BLACKCURRANT GALL MIDGE, BEECH GALL MIDGE, BROOM GALL MIDGE, CAMELLIA GALL, CROWN GALL, EUONOMUS GALL, FELT GALL MITES, GALLS, GALL WASP, GLEDITSIA POD 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, VINE ERINOSE GALL MITE, VIOLET GALL MIDGE, WILLOW BEAN GALL SAWFLY.
See these other Weevils Apple Blossom Weevil, Beech Leaf Mining Weevil, Figworth Weevils, Gorse Seed Weevil, Leaf Weevils, Nut Weevil, Pea and Bean Weevil, Vine Weevil, Weevils, Willow Flea Weevil.


Control

This is a minor pest and can usually be ignored, but if is a problem dusting the planting rows or hole with insecticidal powder should solve the problem.



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