Weed Control with Imazamox Rates and Timings in Herbicide-Tolerant Grain Sorghum

Authors

R. S. Currie, Kansas State UniversityFollow
P. W. Geier, Kansas State UniversityFollow

Keywords

herbicide-resistant sorghum

Abstract

The objective of this trial was to evaluate weed control and crop response using imazamox (KFD-365-02) in herbicide-resistant grain sorghum. Palmer amaranth control was 80% or less late in the season due to the herbicide-resistant weed biotype in the experiment. Both velvetleaf and shattercane control exceeded 90% with most herbicides late in the year. Using KFD-365-02 at the 9.0 oz/a rate applied preemergence alone or with atrazine or Moccasin II Plus controlled green foxtail and puncturevine the best. Most early postemergence treatments caused minor sorghum necrosis 6 days after treatments, but sorghum recovered fully within one week.

Recommended Citation

Currie, R. S. and Geier, P. W. (2021) "Weed Control with Imazamox Rates and Timings in Herbicide-Tolerant Grain Sorghum," Kansas Agricultural Experiment Station Research Reports: Vol. 7: Iss. 7. https://doi.org/10.4148/2378-5977.8111