Field Book of Destructive Forest Insects (Classic Reprint) - Softcover

Inhaltsangabe

Excerpt from Field Book of Destructive Forest Insects

Spray when feeding is first noted with arsenate of lead. Usual dilution 5 lbs. Arsenate of lead powder to 100 gals. Water. Add 4 oz. By wt. Of fish oil or linseed oil for each pound arsenate of lead. In the case of some insects it is necessary to spray the under surface of the leaves.

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