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Efficacy Of Impact Mixtures And Timings In Field Corn, Randall S. Currie, Patrick W. Geier
Efficacy Of Impact Mixtures And Timings In Field Corn, Randall S. Currie, Patrick W. Geier
Kansas Agricultural Experiment Station Research Reports
The objective of this research was to determine the utility of topramezone (Impact) herbicide for efficacy in corn. An experiment evaluated Impact with various tank mix and premix partners at several application timings for weed control in corn. Most herbicides provided excellent control of Palmer amaranth, common lambsquarters, and green foxtail. When Impact alone was applied late postemergence (LPOST) following Dual II Magnum (metolachlor) applied preemergence (PRE), kochia and Russian thistle control was less than 85%. Herbicides applied early postemergence (EPOST) or postemergence (POST) provided the best johnsongrass control early in the season, but no treatments controlled johnsongrass more than …
Residual Herbicides As Single And Sequential Treatments For Efficacy In Corn, Randall S. Currie, Patrick W. Geier
Residual Herbicides As Single And Sequential Treatments For Efficacy In Corn, Randall S. Currie, Patrick W. Geier
Kansas Agricultural Experiment Station Research Reports
This research investigated the use of sequential applications of residual herbicides for the weed-free period in corn. The objective of the study was to compare residual herbicides as either preemergence (PRE) alone or split applications (PRE followed by postemergence). All treatments controlled Palmer amaranth, common lambsquarters, Russian thistle, and green foxtail 90% or more, and kochia 95% or more. Johnsongrass control early in the season was 91% or more regardless of treatment. However, no herbicide controlled johnsongrass as much as 80% late in the year.