|Wilson, Jeffrey - Jeff|
Submitted to: Arthropod Management Tests
Publication Type: Other
Publication Acceptance Date: 12/15/2006
Publication Date: 9/18/2007
Citation: Buntin, G.D., Ni, X., Wilson, J.P. 2007. Chinch bug control in pearl millet for grain production, 2006. Arthropod Management Tests 32: Report F41.
Interpretive Summary: not required
Technical Abstract: Foliar insecticide treatments were evaluated for control of chinch bugs on vegetative stage pearl millet grown for grain production. Two trials were conducted at the Southwest Branch Experiment Station near Plains, GA. Soil was a Faceville sandy loam with 71% sand, 13% silt, 16% clay, 1.1% organic matter, and 6.1 pH. Millet seed was planted following wheat harvest in 14-inch rows in both plot areas on May 31, 2006. Plots were 4 rows (5 ft) by 20 ft long. Treatments were arranged in a RCBD with four replications. Treatments were applied in Trail 1 on June 20, 2006 when plants were about 15 in tall and in Trial 2 on June 28, 2006 when plants were about 12 in tall. Sprays were applied with a CO2-pwered backpack sprayer equipped with three 003 flat-fan nozzles at 40 psi which applied 20 gpa. Chinch bugs were counted from the base of plants from 19.7 in of row and the soil surface half-way to the next row in each plot. Plots were sampled before application (0 d) and three times after application. Results were analyzed with ANOVA, and means were separated with Fischer's protected LSD (' = 0.05). In Trial 1, all rates of Mustang MAX and the Warrior treatment reduced chinch bug numbers at 3 and 8 d after treatment (DAT). By 13 DAT, only the highest rate of Mustang MAX and the Warrior treatment had fewer chinch bugs than the untreated check. In Trial 2, both rates of Mustang MAX and Warrior reduced chinch bug numbers at 3 DAT. At 7 and 11 DAT, both rates of Warrior and the high rate of Mustang MAX had significantly fewer chinch bugs than the untreated check. Azadirachtin (Ecozin 3%EC) did not reduce chinch bugs in either trial. Warrior 1CS is not registered for use on pearl millet.