First report of the Board of State Horticultural Commissioners .. . the pest has been observed in Alameda County, on the pear as wellas the apple. Further observations as to resistant stocks should bemade by those who have opportunity. The winged form of thewoolly aphis will appear within the next few weeks, and it is impor-tant that as many of them as possible should be destroyed beforethat time. Infested trees that are not worth fighting for should bedestroyed at once; grub them out, with at least two feet of the roots,and burn them. An old stump, with a few suckers about it, wouldbreed enou
First report of the Board of State Horticultural Commissioners .. . the pest has been observed in Alameda County, on the pear as wellas the apple. Further observations as to resistant stocks should bemade by those who have opportunity. The winged form of thewoolly aphis will appear within the next few weeks, and it is impor-tant that as many of them as possible should be destroyed beforethat time. Infested trees that are not worth fighting for should bedestroyed at once; grub them out, with at least two feet of the roots,and burn them. An old stump, with a few suckers about it, wouldbreed enough of it to keep up the stock of the neighborhood. Thepest is well established in many of our nurseries, and the greatestcare should be exercised to insure the disinfection of trees boughtthis winter. The roots as well as the tops should be dipped in weaklye—one pound of the commercial article to one gallon of water—orsoaked in soapsuds or tobacco decoction, after cutting off and burn-ing all roots that have been injured by the aphis. 20 REPORT OF W. B.
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