Abstract
Abstract Certified B-size seed was planted on 26 May in a Bearden silt-loam dryland site. Soil moisture was considerably above normal. Plots were 4 40 inch rows 25 ft in length. Treatments were arranged in a RCB design and replicated 4 times. Admire was applied at planting time. Foliar treatments were applied in approximately 20/gal/acre using a hand-held CO2 sprayer and 40 psi. Foliar treatment dates were 29 June, 9 and 20 July, and 4 and 23 August. The initial application was delayed and defoliation was in excess of that normally used to initiate treatment. CPB populations were able to completely defoliate plants by the third week in July. Larval ratings were 0=none and 5≥50 per plant. Potato leafhopper ratings (0=none 5 = severe) were taken but appear to be uniform where potato plants were present. Late blight began to appear in the plots the second week of August. CPB populations were high and have been resistant to Asana XL in recent growing seasons.
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