Plant Pathology Department


Date of this Version



Plant Disease Management Reports 10, FC102 (2016).


Copyright © 2016 The American Phytopathological Society. Used by permission.


The objective of the trial was to compare foliar fungicides for southern rust (SR) efficacy. Irrigated corn was grown based on Nebraska Extension irrigation recommendations at the South Central Ag Lab near Clay Center, NE. Soils were a silt loam with 6.7 pH and 1.8 % OM and the previous crop was soybean. Reduced tillage was performed to the field prior to planting. Corn (DKC 65-79 RIB, tolerant to gray leaf spot (GLS)) was planted at approximately 34,000 seed/A on 26 May. Eight treatments were arranged in a randomized complete block design with six replications. . . . Stalk lodging was significantly less in plots treated with fungicides versus the nontreated check. Priaxor significantly reduced stalk lodging versus the other fungicides; however, Priaxor was similar to Fortix. Grain moisture was significantly greater in fungicide treated plots versus the nontreated check. Grain test weight was significantly less in all fungicide treated plots versus the nontreated check, with the exception of Stratego YLD. Yield differences were nonsignificant between fungicide treated plots and the nontreated check.