Abstract
Abstract The soil type in the test plot is not known, but it was probably Ephrata Series, sandy loam to loam, with less than 2% organic matter. Broadcast and sidedress treatments were conducted as separate experiments, and each treatment was replicated 4 times in a randomized complete block design. Each plot was 8 rows wide (34 inch apart) and 40 ft long. Each treatment was replicated 4 times in a randomized complete block design. Broadcast treatments were applied on April 4, 1969, with a hand-operated grass seeder and disced in the soil on the same day. Potatoes were planted on April 15. Side-dress treatments were applied on April 25, using tractor-mounted Gandy applicators; granules were placed in 1 inch bands, 4 inch to each side and level with the potato seed pieces. The plots were sprinkler irrigated. On October 9, 20-ft lengths of the 4 center rows of each plot were harvested. Injury (any penetration of a tuber by wireworms) was assessed based on percent injured by weight. Percentages of Injured tubers were transformed to X + 0.5 and analyzed by analysis of variance and Duncan’s new multiple range test.
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