File:Control of field rodents on California farms (1965) (20504131938).jpg

Title: Control of field rodents on California farms
Identifier: controloffieldro535stor (find matches)
Year: 1965 (1960s)
Authors: Storer, Tracy I. (Tracy Irwin), 1889-1973; Jameson, E. W. (Everett Williams), 1921-
Subjects: Rodents
Publisher: (Berkeley, Calif. ) : Division of Agricultural Sciences, University of California
Contributing Library: University of California, Davis Libraries
Digitizing Sponsor: University of California, Davis Libraries

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Fig. 22. Muskrat. The tail is narrow, higher than wide, and scaly; the fur is soft, dense, and brownish. Head and body 9Vi to 12 inches, tail 7Vfe to 10 inches. FORMULA 6 For Meadow Mice Oats or barley, lightly rolled 100 pounds Zinc phosphide, powdered 16 ounces Mineral oil with lecithin, or corn oil 22 ounces The cereals named are the most satisfactory but others have been used at times. Change the kind of bait if possible in repeat treatments. Corn oil is best to make the zinc phosphide adhere to the bait. When using mineral oil it is necessary to experiment and determine the amount necessary. Warm the mineral oil and stir in the zinc phosphide until evenly mixed. Pour this mixture, a little at a time, over the grain, stirring vigorously and continuously until1 all kernels are evenly coated with the blackish zinc phosphide. A batch of 10 to 20 pounds may be made in a large bucket or pan stirring with a wooden paddle or large spoon. Larger amounts are best mixed in a steel or wooden drum (or clean cement mixer) with inside baffle plates and mounted on a shaft at an angle so that it can be turned easily. The drum should be revolved long enough to ensure even coating of all the grain. Workers should wear gloves and do the mixing outdoors or in a well-ventilated room; and they must avoid breathing fumes from the poison mixture. FORMULA 7 For Meadow Mice Green alfal'fa leaves 100 pounds Strychnine alkaloid, powdered 3 to 4 ounces Dissolve the strychnine in 2 quarts of water; sprinkle over the bait, turning the latter until all parts are moistened. See page 6—General Precautions with Poisons (41)

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