Experiments With Spray Solutions for Preventing Insect Injury to Green Logs

Cover Experiments With Spray Solutions for Preventing Insect Injury to Green Logs
Experiments With Spray Solutions for Preventing Insect Injury to Green Logs
Frank C Frank Cooper Craighead
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Pine logs sprayed and dipped were attacked after 15 days by a few insects of type 4 and later by more of the same type. The final results were somewhat better than with the controls.
Fish oil. Pine logs sprayed and dipped were immediately attacked by insects of type 4 and later by all types. Final results were no better than with the controls.
Two parts fish oil, one part pine oil, and three parts kerosene. Pine logs sprayed and dipped were attacked after 15 days by insects of type 4 and later
...by all types. The final results were no better than with the controls.
Kerosene. Pine logs sprayed and dipped were attacked after 15 days by insects of type 4 and later by all types; results were no better than with the controls.
Sulphite concentrate (furnished by a paper-pulp null) ; full strength an, d diluted with equal parts of water. Pine logs dipped were attacked after one week by insects of type 4 and later by all types. Final results were no better than with the controls.
Spent sulphite; full strength and equal parts spent sulphite and, a commercial miscible oil.


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