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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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Woolly Aphis

Will you kindly inform me what you consider the best treatment for apple
trees affected by woolly aphis?

The best way to kill the woolly aphis on the roots is to remove the
earth from around the tree to a distance of one or two feet, according
to the size of the tree, digging away a few inches of the surface soil,
Then soak the soil around the tree with kerosene emulsion, properly
made, of 15 per cent strength, and replace the earth. Be sure you get a
good emulsion, for free oil is dangerous. For the insects above ground
on the twigs, a good spraying while the tree is out of leaf will kill
many, but some will survive for summer spraying, and for this a tobacco
spray may be most convenient.

Next: Blister Mite On Walnuts

Previous: Apple-leaf Aphis

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