Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Residual control (3)
- Multiple herbicide resistance (2)
- Palmer amaranth (2)
- Split applications (2)
- Aggressor herbicide (1)
-
- Atrazine resistance (1)
- Chloroacetamide herbicides (1)
- CoAXium wheat (1)
- Enlist corn (1)
- Feral rye (1)
- Herbicide options (1)
- Herbicide resistance (1)
- Herbicide timing (1)
- Herbicide-tolerant sorghum (1)
- Irrigation (1)
- Kochia (1)
- Row width (1)
- Soybeans (1)
- Triazine herbicides (1)
- Weed management (1)
- Wheat stubble (1)
Articles 1 - 11 of 11
Full-Text Articles in Life Sciences
Control Of Multiple Herbicide-Resistant Palmer Amaranth In Enlist Corn, R. Liu, V. Kumar, T. Lambert
Control Of Multiple Herbicide-Resistant Palmer Amaranth In Enlist Corn, R. Liu, V. Kumar, T. Lambert
Kansas Agricultural Experiment Station Research Reports
Recent evolution of multiple herbicide resistant (MHR) Palmer amaranth [resistant to 2,4-D, glyphosate (Roundup), chlorsulfuron (Glean), atrazine (Aatrex), and mesotrione (Callisto)] is a serious threat to newly developed stacked trait technologies, including Enlist crops (tolerant to 2,4-D, glyphosate, and glufosinate). Field experiments were conducted in 2019 at the Kansas State University Agricultural Research Center near Hays, KS, to determine the effectiveness of various preemergence (PRE) followed by (fb) postemergence (POST) herbicides (multiple modes of action) for controlling this MHR Palmer amaranth in Enlist corn. The study was established in no-till dryland wheat stubble where MHR Palmer amaranth seeds …
Weed Management And Soybean Yields As Influenced By Row Width And Post-Emergent Herbicide Application Timing, S. R. Duncan, E. A. Adee
Weed Management And Soybean Yields As Influenced By Row Width And Post-Emergent Herbicide Application Timing, S. R. Duncan, E. A. Adee
Kansas Agricultural Experiment Station Research Reports
Irrigated soybeans were grown in 2018 and 2019 at the Kansas River Valley Experiment Field near Rossville, KS. Soybeans were planted in 30-inch or 15-inch rows and a standard pre-emergent herbicide was applied. Planting dates were May 11 and June 4 in 2018 and 2019, respectively. The post-emergent herbicide was applied at approximately 21 or 35 days following soybean planting (DAP). Weed control and crop injury were visually evaluated approximately every seven days following herbicide application. Yields, moisture, and test weights were calculated from the center two rows in 30-inch plots and four rows in 15-inch plots after combine harvest. …
Response Of Kansas Feral Rye Populations To Aggressor Herbicide And Management In Coaxium Wheat Production System, V. Kumar, R. Liu, T. Lambert
Response Of Kansas Feral Rye Populations To Aggressor Herbicide And Management In Coaxium Wheat Production System, V. Kumar, R. Liu, T. Lambert
Kansas Agricultural Experiment Station Research Reports
Feral rye (Secale cerealeL.), also commonly known as cereal or volunteer rye, is a troublesome winter annual grass weed species in wheat producing regions of the United States, including Kansas. Lack of effective herbicide options complicates the selective control of feral rye in winter wheat. The main objectives of this research were (1) to determine the response of 10 feral rye populations collected from central Kansas wheat fields to Aggressor herbicide in dose-response assays, and (2) to evaluate the effectiveness of Aggressor herbicide for feral rye control in CoAXium winter wheat in Kansas. Dose-response assays indicated that all …
Response Of Dicamba/Fluroxypyr/Glyphosate-Resistant Kochia To Atrazine And Alternative Postemergence Herbicides, R. Liu, V. Kumar, R. Currie, P. W. Geier, T. Lambert, P. W. Stahlman
Response Of Dicamba/Fluroxypyr/Glyphosate-Resistant Kochia To Atrazine And Alternative Postemergence Herbicides, R. Liu, V. Kumar, R. Currie, P. W. Geier, T. Lambert, P. W. Stahlman
Kansas Agricultural Experiment Station Research Reports
Two kochia accessions (KS-4A and KS-4H) were previously identified from a corn field near Garden City, KS, with multiple resistance to glyphosate (Roundup PowerMax), dicamba (Clarity), and fluroxypyr (Starane Ultra). The objectives of this research were to (1) determine the response of these kochia accessions to preemergence (PRE) and postemergence (POST) applied atrazine (Aatrex) in dose-response assays, and (2) determine the effectiveness of alternative POST herbicides. Seeds of a known susceptible kochia accession (SUS) collected from research fields in Hays, KS, were used for comparison. Greenhouse experiments were conducted at the Kansas State University Agricultural Research Center near Hays, KS, …
Early Postemergence And Sequential Herbicides For Weed Control In Corn, R. S. Currie, P. W. Geier
Early Postemergence And Sequential Herbicides For Weed Control In Corn, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
In this study, herbicides were tested to compare sequential and split rates for weed control in corn. Control of green foxtail, Russian thistle, and quinoa was excellent regardless of herbicide treatment, and most herbicides provided good kochia and Palmer amaranth control. Minor corn injury occurred with some herbicides applied early postemergence or postemergence, but did not persist. All herbicide treatments increased grain yield 56 to 78% compared to the weedy control, but yields did not differ between herbicide treatments.
Efficacy Of Late-Season Herbicide Programs For Controlling Palmer Amaranth In Postharvest Wheat Stubble, R. Liu, V. Kumar, N. Aquilina, T. Lambert
Efficacy Of Late-Season Herbicide Programs For Controlling Palmer Amaranth In Postharvest Wheat Stubble, R. Liu, V. Kumar, N. Aquilina, T. Lambert
Kansas Agricultural Experiment Station Research Reports
Late-season control of Palmer amaranth in wheat stubble is a challenge for Kansas producers. The objective of this study was to determine the effectiveness of POST herbicide programs (with multiple modes of actions) for late-season control of Palmer amaranth in postharvest wheat stubble. The study was conducted at the Kansas State University Agricultural Research Center in Hays, KS, in 2019. The study site had a natural seedbank of Palmer amaranth that emerged immediately after wheat harvest. All selected herbicide programs were tested 3 weeks after wheat harvest, when Palmer amaranth plants had attained a height of 2 to 2.5 feet …
Residual Weed Control With Preemergence Herbicides In Grain Sorghum, R. S. Currie, P. W. Geier
Residual Weed Control With Preemergence Herbicides In Grain Sorghum, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
In this study, herbicides were tested to compare preemergence (PRE) application for weed control in grain herbicides. All herbicides controlled quinoa and crabgrass similarly, as well as Russian thistle late in the season. Halex GT at either rate with atrazine as well as Bicep Lite II Magnum controlled Palmer amaranth less than 90% late in the season. Similarly, these herbicides along with Degree Xtra provided less than 90% kochia control late. Grain yields did not differ between herbicide-treated and non-treated sorghum.
Single And Sequential Herbicide Treatments For Efficacy In Corn, R. S. Currie, P. W. Geier
Single And Sequential Herbicide Treatments For Efficacy In Corn, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
In this study, herbicides were tested to compare application of single and sequential treatments for weed control in corn. Quinoa and Russian thistle control was 95% or more regardless of herbicide treatment. Anthem Maxx, Resicore, and Corvus followed by Harness Max provided good control of Palmer amaranth. Acuron applied preemergence and Anthem Maxx plus Callisto and atrazine early postemergence were less effective on kochia than other herbicides, whereas Anthem Maxx plus Callisto and atrazine applied preemergence and Halex GT applied early postemergence were less effective on green foxtail. Grain yields from all herbicide-treated corn were substantially greater than for the …
Efficacy Of Kfd-365-02 Rates And Mixtures In Imidazolinone-Tolerant Grain Sorghum, R. S. Currie, P. W. Geier
Efficacy Of Kfd-365-02 Rates And Mixtures In Imidazolinone-Tolerant Grain Sorghum, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
This study compared various tank mixes of genericS-metolachlor/mesotrione and imazamox for weed control in imidazolinone-tolerant grain sorghum. All herbicides provided more than 90% control of Russian thistle, velvetleaf, and green foxtail, and kochia control late in the season was 85% or more. Puncturevine control late in the season was 80 to 90% with all herbicides except Coyote followed by KFD-365-02 and by KFD-365-02 at 6 oz/a plus atrazine followed by 2,4-D. Only Coyote followed by KFD-365-02 plus atrazine or 2,4-D controlled Palmer amaranth more than 78% late.
Comparison Of Terbuthylazine And Atrazine Preemergence In Grain Sorghum, R. S. Currie, P. W. Geier
Comparison Of Terbuthylazine And Atrazine Preemergence In Grain Sorghum, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
Terbuthylazine is an atrazine analog that is used in Europe as a replacement for atrazine. This study compares terbuthylazine with common herbicide tank mixes for weed control in this region. All herbicides controlled quinoa and crabgrass 95% or more, whereas Bicep II Magnum controlled kochia, Palmer amaranth, and Russian thistle the best late in the season. No herbicide visibly injured grain sorghum in this experiment. Grain yields increased 18 to 32 bu/a when herbicides were applied compared to the nontreated controls except with atrazine at 24 oz/a.
Vida Tank Mixtures For Postemergence Weed Control In Fallow, R. S. Currie, P. W. Geier
Vida Tank Mixtures For Postemergence Weed Control In Fallow, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
The objective of the study was to compare Vida (pyraflufen ethyl) with various tank mix partners for weed control in fallow. All herbicides controlled flixweed and tansymustard 96% or more by 16 days after treatment. Treatments containing Spartan provided faster and better kochia control compared to other herbicides, and these treatments were the only ones to control kochia 95% or more late in the season.