Report On Scale-Insects of the Orange, With Remedies And Their Application ...
Report On Scale-Insects of the Orange, With Remedies And Their Application ...
Henry Guernsey Hubbard
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The most effective instrument known to me is the Aquapult force pump. This throws a constant stream of moderately fine spray with such force that the fluid is driven into close contact with the bark, and on striking the leaves and branches is dashed into fine mist which envelops the tree and wets every leaf. The tree should always be sprayed from each of four sides, and rather more liquid should be used than seems necessary to drench every portion. Although I have thought it advisable to recomm...end several applica- tions, a single very thorough spraying with a good force piimp will, in most instances, prove entirely eftectual in clearing the tree, since, if only an occasional egg or coccid escapes, the great army of parasites and enemies will be almost sure to complete the work. As has been already said, diluted kerosene does no injury to young growth or to the bark of the orange trees. It however causes the older leaves to drop, and where the tree is badly infested with scale or otherwijNC out of condition the defoliation is sometimes complete, espe- cially if the wash is applied in the sun.
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