CONTENTS Insect and Mite Pests of Shade Trees... Insect and Mite Pests of Flowering Trees Insect and Mite Pests of Deciduous Shrubs. Insect and Mite Pests of Broad-Leaved Evergreens Department publications contain public information. They are not 1980 Revised June Washington, D.C. 20402 UNIVERSITY OF MINNESOTA LIBRARIES Insects on SEP 05 1900 GOVERNMENT PUBLICATIONS DIVISION 0899 Prepared by P. H. Schwartz, Jr., SEA entomologist This bulletin has been prepared aspects of the subject in a single especially for homeowners. It tells bulletin. If you need additional inhow to recognize and control the formation, write to your local exmore common insects and mites tension agent, your Cooperative that attack trees and shrubs in Extension Service, or to the U.S. widespread areas of the United Department of Agriculture, WashStates. It also tells how to recog ington, D.C. 20250. Include your nize beneficial insects. return address and ZIP code. The homeowner will find that the If you cannot identify the insects insecticides recommended for con- that are damaging your plants, trol are, with few exceptions, readi- take specimens of the insects (in a ly available and provide a wide small bottle of rubbing alcohol) to range of uses. The sprays are easy your local extension agent or to prepare. If directions are fol- Cooperative Extension Service. Do lowed, they can be used safely. not send live insects through the It is not possible to cover all mail. INSECTICIDE SPRAYS Few sprays come ready to use on mulations and mixing proporthe plants. It is usually necessary tions," shows how to mix sprays in to prepare a spray by mixing a wet- the strengths recommended for table powder or an emulsifiable control of insects in home plantconcentrate with water. These ings. References to sprays start on materials contain different per page 4. centages of active ingredient (dif- The table on page 4 gives proporferent strengths). tions for mixing a small quantity of The table, "Insecticide spray for- spray. If you use a material in which the percentage of active in1 National Program Staff, Crop Protec gredient differs from that shown in tion, Beltsville, Md. 20705. the table, mix proportionately 1 WP=wettable powder; EC=emulsifiable concentrate. If the available formulation contains more or less of the indicated active ingredient, mix proportionately more or less of it with 1 gallon of water. 3 Dicofol is commonly found on the label with other active ingredients. In these instances, use dosage recommended on the label. Conversion table for 1, 3, and 100 gallons of water Type of material Emulsifiable concentrate (EC) Quantities of material for indicated quantities of water 100 gallons 3 gallons 1 gallon 5 gallons 144 pints 13 tablespoons 4 gallons 1 pint 10 tablespoons 1/4 pint 5 tablespoons 1 gallon 8 tablespoons 3 tablespoons 1 quart 2 tablespoons 2 teaspoons 1 pint 1 tablespoon 1 teaspoon 5 pounds 10 tablespoons 3 tablespoons 4 pounds 8 tablespoons 8 teaspoons 3 pounds 6 tablespoons 2 tablespoons 2 pounds 4 tablespoons 4 teaspoons 1 pound 6 teaspoons 2 teaspoons 1/2 pound 1 tablespoon 1 teaspoon Wettable powder (WP) |
