| Autor: |
Siegler, E. H., Brown, Luther, Yothers, M. A., Yetter, W. P. |
| Zdroj: |
Journal of Economic Entomology; December 1929, Vol. 22 Issue: 6 p966-966, 1p |
| Abstrakt: |
The use of beta-naphthol in powdered form on codling moth band traps in 1926 appeared promising. The action was slow and difficulty was experienced in keeping a sufficient coating of the material on the bands. In 1927, a red engine type of oil was incorporated with the beta-naphthol as a binder and proved to be quite an improvement over the powder application. The oil appeared to be of benefit both as an insecticide and as a mechanical carrier for the beta-naphthol, increasing the rapidity of kill. The work in 1927 resulted in the conclusion that a crepe paper band with beta-naphthol and oil on it approached nearer to the desired self-working band than other types of bands with these substances on them. The crepe bands held more of the coating under humid conditions than any other types of bands used. In addition crepe paper bands appear to be safer to use from the standpoint of tree injury than the cloth bands. The principal development of 1928 was the adoption of an impregnation method of applying the chemicals to the band as a substitute for the smearing on of the mixture. By this method it was found possible to coat the inner surfaces of corrugated paper, a material which is highly efficient in trapping mature codling moth larvae. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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