. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. FALSE WIEEWORMS OF PACIFIC NORTHWEST. 87 This treatment is by no means advocated for those farmers who find it impossible to disk their summer-fallow, as leaving the land untouched until July would cause all the accumulated winter's moisture to evaporate, and the plowing would simply be stirring the dust and be of no value whatever. In the spring of 1910 a series of experiments was carried out at Wilbur, Wash., to determine the value of certain substances alleged to be useful as poisons or repellents against elat
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. FALSE WIEEWORMS OF PACIFIC NORTHWEST. 87 This treatment is by no means advocated for those farmers who find it impossible to disk their summer-fallow, as leaving the land untouched until July would cause all the accumulated winter's moisture to evaporate, and the plowing would simply be stirring the dust and be of no value whatever. In the spring of 1910 a series of experiments was carried out at Wilbur, Wash., to determine the value of certain substances alleged to be useful as poisons or repellents against elaterid larvaB. Eleodes larVae were also quite numerous in the fields where these experiments were carried out; hence mention of the results, though relating prin- cipally to another insect, may not be out of place here. Seed in bulk was treated with the following substances: Lead arse- nate, at the rate of two-thirds of a pound per bushel of seed, dissolved in water; strychnine sulphate, at the rate of two-thirds of an ounce per bushel of seed, dissolved in water; coal tar applied until seed was all coated, then sanded until dry. The substances were stirred into the grain thoroughly with a wooden paddle and then allowed to dry several days. The experiments were sown in strips with a wheat seeder 11 feet wide and one-half of a mile long. Untreated check strips were planted between each treated plat. Just after sprouting the percentage of damage done by insects was estimated by counting the damaged and undamaged seed in several areas of 1 square yard each in each plat. The results were entirely negative as all the plats, including the checks, were about equally attacked. These treatments, even had they been found efficient, would have been impracticable from an economic standpoint. The poisons were too expensive and the application too expensive and laborious, and, in addition, the coal-tar treatment, even after drying several days, so clogged the seed cups on the seeder as to caus
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