Flea Beetle Control on Seedling Sweet Corn, 1979

This trial was conducted at the University of Arizona, Mesa Branch Station, with a soil type of Laveen clay loam. Golden Bantam cross T-51 strain of sweet corn was planted in a single row per 40 inch wide moist bed on Aug 15. After the seedling corn was 6-8 inches tall it was irrigated. A complete randomized block design with 4 replicates was used. Plots were 4 beds wide, 13.2 ft and 30 ft long on 0.009 acres. Sprays were applied using a CO2 pressurized bak-pak sprayer with a D-3 tip, No. 25 core and 50 mesh screen. This operated at 55 psi applying 35 gallons of spray mixture per acre. Insect counts were made by examining 20 plants from the middle 2 rows of each plot for the presence of flea beetle adults. Two species of flea beetles were present, the desert corn flea beetle, Chaetocnemaectypa which was most numerous and the palestriped flea beetle, Systenablanda.