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Pests and Diseases of Plants

Apple-leaf Aphis
Bean Weevil
Blister Mite On Walnuts
Borers In Olive Twigs
Cause Of Mottle Leaf
Control Of Grasshoppers
Control Of Pear Slug
Control Of Red Spider
Control Of Squash Bugs
Cutworms And Young Trees
Depluming Mites
Finding Thrips
Formula For Lime-sulphur
Fumigating For Black Scale
Gopher Poison

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Borers In Olive Twigs

There are quite a number of olive trees in this locality that have
something wrong with them. They make a growth of five or six inches and
the center twig dies back, then it sprouts out at the sides and makes
another growth in the same way. This makes a thick bush instead of the
tree coming up as it should.

The dying back is caused by a beetle which bores into the twigs. The
twigs above the point where the beetle enters dies and then, of course,
buds come out from healthy wood below. No treatment has been devised
against it, though its breeding ground is limited if all dead wood and
brush and litter is cleaned up and twigs are cut off below the point of
injury whenever the work of the insect is seen.

Next: Raspberry Cane Borer

Previous: Gumming Of Prune Trees

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