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- Keyword
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- Weed control (57)
- Palmer amaranth (31)
- Western Australia (29)
- Herbicides (20)
- Residual control (16)
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- Kochia (15)
- Cereals (14)
- Weeds (14)
- Atrazine (12)
- Dicamba (11)
- Sequential applications (11)
- Grain sorghum (10)
- Green foxtail (10)
- Glyphosate (9)
- Herbicide (9)
- Herbicide resistance (9)
- Russian thistle (9)
- Wheat (9)
- Weed science (8)
- Sericea lespedeza (7)
- Soybeans (7)
- Avena fatua (6)
- Beef cattle (6)
- Corvus (6)
- Emex australis (6)
- Fallow (6)
- Irrigated corn (6)
- Pastures (6)
- Corn (5)
- Mesotrione (5)
- Publication Year
- Publication
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- Kansas Agricultural Experiment Station Research Reports (126)
- Journal of the Department of Agriculture, Western Australia, Series 4 (67)
- Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences (2)
- Outcomes and Impact Quarterly (2)
- CSU Journal of Sustainability and Climate Change (1)
Articles 31 - 60 of 202
Full-Text Articles in Agronomy and Crop Sciences
Foxtail Management In Smooth Brome Hay Meadows, S. R. Lancaster, S. R. Duncan
Foxtail Management In Smooth Brome Hay Meadows, S. R. Lancaster, S. R. Duncan
Kansas Agricultural Experiment Station Research Reports
Three different herbicides were applied at early bromegrass greenup and at post hay harvest to assess their effectiveness in controlling foxtail at two producer hay meadow sites in Pottawatomie (PT) and Dickinson (DK) counties. Pendimethalin applied early resulted in the greatest foxtail control, but control did not extend through the season to reduce late-summer infestations. Metsulfuron applied early resulted in approximately 30% visible brome injury. The injury was associated with 77 and 48% brome hay losses when compared to the untreated check, at the PT and DK sites, respectively. Injury from the early spring treatments was exacerbated by six freeze …
Auxinic Herbicide Mixtures For Controlling Multiple Herbicide-Resistant Kochia In Fallow, V. Kumar, T. Lambert, R. Liu, R. S. Currie, P. W. Stahlman
Auxinic Herbicide Mixtures For Controlling Multiple Herbicide-Resistant Kochia In Fallow, V. Kumar, T. Lambert, R. Liu, R. S. Currie, P. W. Stahlman
Kansas Agricultural Experiment Station Research Reports
Kochia resistant to glyphosate (Roundup), chlorsulfuron (Glean), and dicamba (Banvel or Clarity) has become quite common in the U.S. Great Plains, whereas multiple resistance to additional herbicides, including fluroxypyr (Starane Ultra), atrazine (AAtrex), and metribuzin (Sencor) has also been reported recently. Effective management of these multiple herbicide-resistant (MHR) kochia populations warrants the need of alternative herbicide strategies. The main objective of this research was to investigate the efficacy of auxinic herbicides, including Duplosan (dichlorprop-p), Weedone (2,4-D), Clash (dicamba), and/or Pixxaro (premix of halauxifen and fluroxypyr) alone or in various combinations for controlling MHR kochia. Separate greenhouse and field experiments were …
Zest Application Timings For Efficacy In Grain Sorghum, R. S. Currie, P. W. Geier
Zest Application Timings For Efficacy In Grain Sorghum, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
This study was conducted to compare Zest (nicosulfuron) herbicide at two rates and two application timings for efficacy in grain sorghum. Palmer amaranth control was best when a preemergence (PRE) herbicide was followed by a late postemergence (LPOST) treatment. Zest at 0.67 or 1.33 oz/a provided the best velvetleaf and shattercane control. Either rate of Zest applied early postemergence (EPOST) controlled green foxtail more than 90%, but the higher rate was required for greater than 90% control when applications were delayed until LPOST.
Weed Control With Single And Split Herbicide Applications In Corn, R. S. Currie, P. W. Geier
Weed Control With Single And Split Herbicide Applications In Corn, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
The objective of the study was to compare season-long weed control from single and sequential herbicide applications in corn. Kochia control was 90% or more late in the season, and did not differ among herbicides. All herbicides except Lumax EZ provided 90% or more Russian thistle control by the season’s end. Palmer amaranth control was lowest when Bicep II Magnum was applied preemergence (PRE) and followed by Lexar EZ postemergence (POST), and when Acuron was applied PRE and again POST. Compared to the untreated control, corn receiving herbicide treatments yielded more than three times as much grain, but yields did …
Fallow Weed Control With Vida Tank Mixtures, R. S. Currie, P. W. Geier
Fallow Weed Control With Vida Tank Mixtures, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
The objective of the study was to compare Vida (pyraflufen) with various tank mix partners for glyphosate-resistant kochia control. Flixweed control was complete in fallow with all herbicides by 28 days after treatment. Kochia control was best when Vida was applied with glyphosate and Spartan. However, due in part to the extremely dry conditions, no treatment controlled kochia by more than 83% at 28 days after treatment, and kochia control began to decline after this 28 DAT.
Novel Sorghum Herbicides For Grass Control In Fallow, R. S. Currie, P. W. Geier
Novel Sorghum Herbicides For Grass Control In Fallow, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
This study was conducted to compare herbicides for use in herbicide-tolerant grain sorghum for grass control in fallow. Imazamox applied preemergence (PRE) was generally the most effective herbicide regardless of weed species or evaluation date. Postemergence (POST) treatments did not control green foxtail more than 78% late in the season. Imazamox, Assure II (quizalofop), and Accent (nicosulfuron) applied PRE or early POST controlled shattercane and crabgrass 90% or more late in the season. Assure II applied late POST also controlled shattercane 93 to 95% late in the year.
Pixxaro Alone And In Combination For Weed Control In Fallow, R. S. Currie, P. W. Geier
Pixxaro Alone And In Combination For Weed Control In Fallow, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
The objective of this study was to compare Pixxaro (halauxifen/fluroxypyr) alone and in combinations for weed control in fallow. Pixxaro alone was equal to or better than Banvel, Starane Ultra, or glyphosate alone for kochia control. However, the best kochia control occurred when these herbicides were mixed in various combinations. Similarly, Pixarro controlled flixweed equally as well as Banvel, Starane Ultra, or glyphosate at 7 days after treatment but flixweed control was complete regardless of herbicide later in the season.
Influence Of Six Herbicides Applied To Silage Corn On Fall Planted Rye And Radish Cover Crop Growth In South Dakota Soils, Sydney Pridie
Influence Of Six Herbicides Applied To Silage Corn On Fall Planted Rye And Radish Cover Crop Growth In South Dakota Soils, Sydney Pridie
The Journal of Undergraduate Research
Spring preemergence herbicide applications are often used for burndown of existing weeds and residual control, eliminating weed presence during early season crop growth. There has been an increase in the interest in planting cover crops soon after cash crop removal, due to the potential soil and production benefits. However, soil herbicide residuals may result in poor cover crop growth. This study examined the growth of radish (Raphanus sativa) and rye (Secale cereal), species often used as cover crops, in soils that had been treated with residual herbicides about 100 d prior to cover crop planting. The …
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 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.
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.
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, …
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 …
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.
Effects Of Spring-Planted Cover Crops On Weed Suppression And Winter Wheat Grain Yield In Western Kansas, A. K. Obour, J. D. Holman, J. A. Dille, V. Kumar
Effects Of Spring-Planted Cover Crops On Weed Suppression And Winter Wheat Grain Yield In Western Kansas, A. K. Obour, J. D. Holman, J. A. Dille, V. Kumar
Kansas Agricultural Experiment Station Research Reports
Herbicide resistant (HR) weeds pose a major challenge to continuous no-tillage (NT) dryland crop management systems. Integrating cover crop (CCs) in dryland crop rotations could suppress weeds and provide a weed management option for HR weeds in NT systems. Field experiments were conducted to investigate weed suppression potential of spring-planted CCs and their impacts on subsequent winter wheat grain yields. The CCs were oat/triticale, oat/triticale/pea, spring pea, and chem-fallow (standard) over 3 years and 2 locations in western Kansas. A weedy-fallow check was added to compare weed suppression of CCs in 2 out of the 3 years. Results showed CC …
Effective Herbicide Options For Controlling Glyphosate-Resistant Palmer Amaranth In Roundup Ready 2 Xtend Soybean, V. Kumar, R. Liu, T. Lambert, D. E. Peterson, C. L. Minihan, P. W. Stahlman
Effective Herbicide Options For Controlling Glyphosate-Resistant Palmer Amaranth In Roundup Ready 2 Xtend Soybean, V. Kumar, R. Liu, T. Lambert, D. E. Peterson, C. L. Minihan, P. W. Stahlman
Kansas Agricultural Experiment Station Research Reports
Glyphosate-resistant (GR) Palmer amaranth has become a serious challenge for soybean producers in the mid-south and central United States, including Kansas. Field experiments were conducted at the Kansas State University Agricultural Research Center (KSU-ARC) near Hays, KS, and Kansas State University Ashland Bottoms (KSU-AB) research farm near Manhattan, KS, to determine the effectiveness of preemergence (PRE) and PRE followed by (fb) postemergence (POST) herbicide programs on GR Palmer amaranth control in Roundup Ready 2 Xtend soybean. The study site at Hays was infested with GR Palmer amaranth population prior to soybean planting; whereas, the Manhattan site had natural …
Characterization And Management Of Glyphosate- And Hppd-Inhibitor-Resistant Palmer Amaranth In Kansas Corn Production, V. Kumar, R. Liu, T. Lambert
Characterization And Management Of Glyphosate- And Hppd-Inhibitor-Resistant Palmer Amaranth In Kansas Corn Production, V. Kumar, R. Liu, T. Lambert
Kansas Agricultural Experiment Station Research Reports
Multiple herbicide-resistant (MHR) Palmer amaranth is an increasing management concern for Kansas grain producers. The main purpose of this research was to 1) characterize the resistance levels to glyphosate (Roundup PowerMax) and mesotrione (Callisto) in an MHR Palmer amaranth population collected from Stafford County, KS, compared to a known herbicide-susceptible (SUS) population; and 2) to evaluate the effectiveness of preemergence (PRE), PRE followed by (fb) early post emergence (EPOST), and PREfblate POST (LPOST) herbicide programs for controlling this MHR population in Roundup Ready and LibertyLink corn. To achieve these objectives, a whole plant dose-response study was …
Application Timing Efficacy Of Enlist Duo In Irrigated Corn, R. S. Currie, P. W. Geier
Application Timing Efficacy Of Enlist Duo In Irrigated Corn, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
In this study, herbicides were tested to compare application timing for weed control in irrigated corn. All herbicides tested provided season-long control (90% or more) of Palmer amaranth, Russian thistle, quinoa, and common sunflower. The inclusion of Enlist Duo to SureStart II as an early postemergence (V2) treatment increased kochia and johnsongrass control compared to a preemergence treatment of SureStart II alone early in the season. However, by later in the year, control of kochia and johnsongrass was best when Enlist Duo application was delayed until the V4 stage. Enlist Duo provided equal control of all weeds when applied at …
Anthem Maxx Tank Mixture Comparisons In Irrigated Corn, R. S. Currie, P. W. Geier
Anthem Maxx Tank Mixture Comparisons In Irrigated Corn, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
The use of multiple herbicide modes of action in single versus sequential applications was examined for efficacy in corn. Common sunflower control was complete with all early postemergence and postemergence herbicides late in the season. Control of Russian thistle, Palmer amaranth, and green foxtail were 95% or more with all early postemergence and postemergence herbicides except Halex GT. All herbicide treatments increased grain yield 15–33% compared to the nontreated controls except Halex GT applied early postemergence.
Comparison Of Preemergence Herbicides For Residual Weed Control In Grain Sorghum, R. S. Currie, P. W. Geier
Comparison Of Preemergence Herbicides For Residual Weed Control In Grain Sorghum, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
Herbicides were studied to determine preemergence efficacy in grain sorghum. Velvetleaf and quinoa control did not differ between herbicides late in the season, and no treatment controlled puncturevine more than 81%. The three-way mixture of Callisto, atrazine, and Dual Magnum controlled Palmer amaranth and green foxtail as well as or better than any herbicide tested, whereas most herbicides controlled kochia 88% or more. Compared to the nontreated controls, all herbicides increased sorghum yield 46–146% except Callisto alone at 6 oz/a.
Split Applications Of Coyote And Lumax For Efficacy In Grain Sorghum, R. S. Currie, P. W. Geier
Split Applications Of Coyote And Lumax For Efficacy In Grain Sorghum, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
In an effort to determine the efficacy of herbicide application timing in sorghum, full herbicide rates were applied 14 days preplant, and compared with split applications of half rates applied at two timings. Generally, weed control was best when half of the labeled rates were applied 14 days preplant followed by the other half preemergence, compared to full rates applied 14 days preplant. However, control of velvetleaf and common sunflower was excellent (95% or more) regardless of when the treatments were applied. Grain sorghum yields were similar among all herbicide treatments, and each treatment increased yield from 2 to 2.5-fold …
Herbicide Strategies For Managing Glyphosate- And Dicamba-Resistant Kochia In Roundup Ready 2 Xtend Soybean, V. Kumar, R. Liu, T. Lambert, P. W. Stahlman
Herbicide Strategies For Managing Glyphosate- And Dicamba-Resistant Kochia In Roundup Ready 2 Xtend Soybean, V. Kumar, R. Liu, T. Lambert, P. W. Stahlman
Kansas Agricultural Experiment Station Research Reports
Kochia populations with multiple resistance to glyphosate and dicamba are an increasing concern for growers in the High Plains region, including Kansas. A field study was conducted at the Kansas State University Agricultural Research Center near Hays, KS, to evaluate and develop herbicide options for controlling glyphosate- and dicamba-resistant kochia in Roundup Ready 2 Xtend soybean. The study site was uniformly infested with a glyphosate- and dicamba-resistant kochia population prior to soybean planting. Fifteen herbicide treatments (programs), including PRE alone and PRE followed by (fb) POST-applied herbicides, were investigated in a randomized complete block design with four replications. …
Efficacy Of Zest Application Timings In Irrigated Acetolactase Synthase-Resistant Grain Sorghum, R. S. Currie, P. W. Geier
Efficacy Of Zest Application Timings In Irrigated Acetolactase Synthase-Resistant Grain Sorghum, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
Acetolactase synthase inhibiting (ALS) herbicides were evaluated for efficacy in ALS-resistant grain sorghum. Kochia and quinoa control were similar among all herbicides tested regardless of evaluation date. Cinch ATZ alone preemergence, and Cinch plus Resolve and Harmony GT PRE followed by Zest POST controlled puncturevine 73-78%. Late-season green foxtail control was best when Zest was included as an early postemergence or postemergence application. Cinch ATZ applied alone preemergence, Cinch ATZ preemergence followed by Zest POST, and Cinch plus Resolve and Harmony GT PRE followed by Zest POST controlled Palmer amaranth 81–84%, and resulted in the highest grain yields.
Efficacy Of Sequential Herbicide Applications In Glufosinate- And Glyphosate-Resistant Corn, R. S. Currie, P. W. Geier
Efficacy Of Sequential Herbicide Applications In Glufosinate- And Glyphosate-Resistant Corn, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
To determine their efficacy in corn, this study compared two preemergence programs and sequential glufosinate (Interline) or glyphosate (Roundup PowerMax). Control of common sunflower and Russian thistle was excellent regardless of herbicide treatment. Preemergence herbicides alone provided no more than 78% johnsongrass control early in the season. By late season, only those plots receiving Roundup PowerMax had more than 85% johnsongrass control. However, corn yields did not differ among treatments, and all herbicides increased yield 70–97% relative to nontreated corn.
Using Cover Crops As An Effective Weed Control Method In Southeast Kansas, L. I. Chism, J. A. Dille, G. F. Sassenrath
Using Cover Crops As An Effective Weed Control Method In Southeast Kansas, L. I. Chism, J. A. Dille, G. F. Sassenrath
Kansas Agricultural Experiment Station Research Reports
Weed control is important to optimize crop production. This study was conducted to compare the effectiveness of different methods of fall-implemented weed control strategies. These strategies included different cover crop mixes, chemical control, and mechanical control. The cover crop mixes included four different commonly-planted winter cover crops. The chemical control was a fall-applied burndown, and the mechanical control was vertical tillage. We found cover crop mixes that contained cereal rye provided the most weed control, with the chemical control being a close second. Spring oats die during the winter because of the low temperatures. The three cover crop mixes containing …