Plant Pathology Department


Date of this Version



Plant Disease Management Reports 6, FC077 (2012).


Copyright © 2012 The American Phytopathological Society. Used by permission.


A foliar fungicide efficacy timing trial was conducted at the University of Nebraska-Lincoln Agricultural Research and Development Center near Mead, NE. Pioneer corn hybrid P0832XR was planted on 10 May in 30 in. rows with a target population of 30,000 plants/A. The trial area was disked in the early spring with corn as the previous year’s crop. A herbicide program of Lexar (3 pts/A) + Roundup PowerMax (22 fl oz/A) +AMS was applied to the trial. Nine treatments and a non-treated control were replicated five times in a randomized complete block design. Each plot was four rows (10 ft) wide by 30 ft in length. Foliar fungicides were applied with a pressurized CO2 backpack sprayer with a 10 ft spray boom. . . . Among all treatments, Headline AMP, 5 fl oz/A at V5 followed by Headline AMP, 10 fl oz/A at VT/R1 had the highest stay green percentage (22.6%). There were no significant differences among treatments for 500-count kernel weights. There were statistical differences in grain moisture as moisture percentage ranged from 14.0% to 15.1%. There were no statistical differences in yield among all treatments. Stratego YLD, 2 fl oz/A at V5 and Quilt Xcel, 10.5 fl oz/A at VT/R1 were the highest yielding treatments with 198.9 bu/A.