Onion Maggot Control, 1987

Seeds were treated by D. L. Suett in March and sent to the United States in time for planting on 20 Apr in muck soil near Potter, N.Y., on the Tony Sacheli Farm. Plots were single rows, 30 ft long, replicated 5 times in a randomized block design. Germination and damage data were recorded from the center 20 ft of each row. All seeds were sown and seed-furrow treatments applied with a hand-pushed cone seeder planting 9 seeds/ft and delivering 75 gal/acre through a gravity fed system. Insecticide band treatments were based on a 15-inch row width. Dithane M-45 (80WP) was applied in the furrow at 2.4 lb (AI)/acre for control of onion smut (Urocystis cepulae) with each treatment. Stand counts were taken 21 May. Maggot damage was assessed by checking each row for wilted plants twice each week from the time of stand counts until 6 Jul.