Smaller and better radios

• Book ID: 104129090
• Publisher: Elsevier Science
• Year: 1933
• Tongue: English
• Weight: 42 KB
• Volume: 216
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(33)90866-2

✦ Synopsis

Killing Apple Worms.--(U. S. Dept. of Agric. Clip Sheet No. 776.) The Bureau of Entomology has made available for those who desire them detailed directions on how to prepare chemically treated bands to protect fruit trees against the codling moth caterpillars. These caterpillars start to leave the fruit about the middle of June and seek the nearest dark, protected place for spinning their cocoons. Loose bark on the trunk and branches, or debris on the ground, normally provide suitable quarters. If the trees have been scraped and the orchard thoroughly cleaned up, however, the bands around the trunk of the tree will attract 5o per cent. or more of the worms.

These bands consist essentially of a 2-inch strip of corrugated paper treated with a mixture of beta-naphthol (I pound) and lubricating oil (I ~ pints). Bands so treated, automatically kill practically all the worms that spin their cocoons in contact with it. The number killed may amount to as many as a thousand worms to the tree each season.

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