Comparison of a diflufenican-containing premixture to current commercial standards for residual Palmer amaranth (Amaranthus palmeri) and waterhemp (Amaranthus tuberculatus) control
With Palmer amaranth and waterhemp evolving resistance to nine and six different sites of action (SOAs) globally, soybean producers continue to search for new options to control these problematic weeds. Bayer CropScience has announced its intentions to launch a Convintro™ brand of herbicides, one be...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Cambridge University Press
2025-01-01
|
| Series: | Weed Technology |
| Subjects: | |
| Online Access: | https://www.cambridge.org/core/product/identifier/S0890037X24000897/type/journal_article |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849420150902620160 |
|---|---|
| author | Matthew C. Woolard Jason K. Norsworthy Trenton L. Roberts Benjamin C. Thrash L. Tom Barber Christy L. Sprague Tristen H. Avent |
| author_facet | Matthew C. Woolard Jason K. Norsworthy Trenton L. Roberts Benjamin C. Thrash L. Tom Barber Christy L. Sprague Tristen H. Avent |
| author_sort | Matthew C. Woolard |
| collection | DOAJ |
| description | With Palmer amaranth and waterhemp evolving resistance to nine and six different sites of action (SOAs) globally, soybean producers continue to search for new options to control these problematic weeds. Bayer CropScience has announced its intentions to launch a Convintro™ brand of herbicides, one being a three-way premixture for preemergence use in soybean. The premixture will contain diflufenican (WSSA Group 12), metribuzin (WSSA Group 5), and flufenacet (WSSA Group 15), adding a new SOA for soybean producers throughout the United States. With the anticipated launch of the premixture, research is needed to evaluate the length of residual control provided by the new herbicide. Research trials were conducted in Fayetteville and Keiser, AR, and Morrice, MI, in 2022 and 2023. A 0.17:0.35:0.48 ratio of a diflufenican:metribuzin:flufenacet (DFF)-containing premixture was applied alone and in combination with additional metribuzin and dicamba. Also, metribuzin, acetochlor, a S-metolachlor:metribuzin premixture, and a flumioxazin:pyroxasulfone:metribuzin premixture were applied preemergence. The DFF-containing premixture was more effective in reducing Palmer amaranth/waterhemp emergence than acetochlor in four of six trials at 28 d after treatment (DAT). Palmer amaranth and waterhemp densities in plots treated with the DFF-containing premixture exhibited similar results to plots treated with the S-metolachlor:metribuzin premixture and the flumioxazin:pyroxasulfone:metribuzin premixture at 28 DAT. By 56 DAT, Palmer amaranth and waterhemp densities were comparable or superior in plots with the DFF-containing premixture than in those treated with acetochlor and metribuzin, and the S-metolachlor:metribuzin premixture at five of six sites. The addition of dicamba or metribuzin to the DFF-containing premixture did not reduce Palmer amaranth or waterhemp density compared to the DFF-containing premixture at 28 or 56 DAT. Overall, the DFF-containing premixture generally provided greater or comparable control over several standard herbicides, providing growers a new product for preemergence control of Amaranthus species in soybean fields. |
| format | Article |
| id | doaj-art-648e3b3188ca490db813ae3a88be6d60 |
| institution | Kabale University |
| issn | 0890-037X 1550-2740 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | Weed Technology |
| spelling | doaj-art-648e3b3188ca490db813ae3a88be6d602025-08-20T03:31:49ZengCambridge University PressWeed Technology0890-037X1550-27402025-01-013910.1017/wet.2024.89Comparison of a diflufenican-containing premixture to current commercial standards for residual Palmer amaranth (Amaranthus palmeri) and waterhemp (Amaranthus tuberculatus) controlMatthew C. Woolard0https://orcid.org/0009-0003-8161-4417Jason K. Norsworthy1https://orcid.org/0000-0002-7379-6201Trenton L. Roberts2https://orcid.org/0000-0001-5558-7257Benjamin C. Thrash3https://orcid.org/0000-0002-3487-1838L. Tom Barber4Christy L. Sprague5https://orcid.org/0000-0001-9584-4174Tristen H. Avent6https://orcid.org/0000-0002-9125-6268Graduate Research Assistant, Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR, USADistinguished Professor, Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR, USAProfessor, Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR, USAAssistant Professor, Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Lonoke, AR, USAProfessor, Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Lonoke, AR, USAProfessor, Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI, USAGraduate Research Assistant, Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR, USAWith Palmer amaranth and waterhemp evolving resistance to nine and six different sites of action (SOAs) globally, soybean producers continue to search for new options to control these problematic weeds. Bayer CropScience has announced its intentions to launch a Convintro™ brand of herbicides, one being a three-way premixture for preemergence use in soybean. The premixture will contain diflufenican (WSSA Group 12), metribuzin (WSSA Group 5), and flufenacet (WSSA Group 15), adding a new SOA for soybean producers throughout the United States. With the anticipated launch of the premixture, research is needed to evaluate the length of residual control provided by the new herbicide. Research trials were conducted in Fayetteville and Keiser, AR, and Morrice, MI, in 2022 and 2023. A 0.17:0.35:0.48 ratio of a diflufenican:metribuzin:flufenacet (DFF)-containing premixture was applied alone and in combination with additional metribuzin and dicamba. Also, metribuzin, acetochlor, a S-metolachlor:metribuzin premixture, and a flumioxazin:pyroxasulfone:metribuzin premixture were applied preemergence. The DFF-containing premixture was more effective in reducing Palmer amaranth/waterhemp emergence than acetochlor in four of six trials at 28 d after treatment (DAT). Palmer amaranth and waterhemp densities in plots treated with the DFF-containing premixture exhibited similar results to plots treated with the S-metolachlor:metribuzin premixture and the flumioxazin:pyroxasulfone:metribuzin premixture at 28 DAT. By 56 DAT, Palmer amaranth and waterhemp densities were comparable or superior in plots with the DFF-containing premixture than in those treated with acetochlor and metribuzin, and the S-metolachlor:metribuzin premixture at five of six sites. The addition of dicamba or metribuzin to the DFF-containing premixture did not reduce Palmer amaranth or waterhemp density compared to the DFF-containing premixture at 28 or 56 DAT. Overall, the DFF-containing premixture generally provided greater or comparable control over several standard herbicides, providing growers a new product for preemergence control of Amaranthus species in soybean fields.https://www.cambridge.org/core/product/identifier/S0890037X24000897/type/journal_articleAcetochlordicambadiflufenicanflufenacetflumioxazinmetribuzinpyroxasulfonePalmer amaranth, Amaranthus palmeri (S.) Wats.waterhemp, Amaranthus tuberculatussoybean, Glycine max (L.) Merr.Group 12weed densityresidual control |
| spellingShingle | Matthew C. Woolard Jason K. Norsworthy Trenton L. Roberts Benjamin C. Thrash L. Tom Barber Christy L. Sprague Tristen H. Avent Comparison of a diflufenican-containing premixture to current commercial standards for residual Palmer amaranth (Amaranthus palmeri) and waterhemp (Amaranthus tuberculatus) control Weed Technology Acetochlor dicamba diflufenican flufenacet flumioxazin metribuzin pyroxasulfone Palmer amaranth, Amaranthus palmeri (S.) Wats. waterhemp, Amaranthus tuberculatus soybean, Glycine max (L.) Merr. Group 12 weed density residual control |
| title | Comparison of a diflufenican-containing premixture to current commercial standards for residual Palmer amaranth (Amaranthus palmeri) and waterhemp (Amaranthus tuberculatus) control |
| title_full | Comparison of a diflufenican-containing premixture to current commercial standards for residual Palmer amaranth (Amaranthus palmeri) and waterhemp (Amaranthus tuberculatus) control |
| title_fullStr | Comparison of a diflufenican-containing premixture to current commercial standards for residual Palmer amaranth (Amaranthus palmeri) and waterhemp (Amaranthus tuberculatus) control |
| title_full_unstemmed | Comparison of a diflufenican-containing premixture to current commercial standards for residual Palmer amaranth (Amaranthus palmeri) and waterhemp (Amaranthus tuberculatus) control |
| title_short | Comparison of a diflufenican-containing premixture to current commercial standards for residual Palmer amaranth (Amaranthus palmeri) and waterhemp (Amaranthus tuberculatus) control |
| title_sort | comparison of a diflufenican containing premixture to current commercial standards for residual palmer amaranth amaranthus palmeri and waterhemp amaranthus tuberculatus control |
| topic | Acetochlor dicamba diflufenican flufenacet flumioxazin metribuzin pyroxasulfone Palmer amaranth, Amaranthus palmeri (S.) Wats. waterhemp, Amaranthus tuberculatus soybean, Glycine max (L.) Merr. Group 12 weed density residual control |
| url | https://www.cambridge.org/core/product/identifier/S0890037X24000897/type/journal_article |
| work_keys_str_mv | AT matthewcwoolard comparisonofadiflufenicancontainingpremixturetocurrentcommercialstandardsforresidualpalmeramaranthamaranthuspalmeriandwaterhempamaranthustuberculatuscontrol AT jasonknorsworthy comparisonofadiflufenicancontainingpremixturetocurrentcommercialstandardsforresidualpalmeramaranthamaranthuspalmeriandwaterhempamaranthustuberculatuscontrol AT trentonlroberts comparisonofadiflufenicancontainingpremixturetocurrentcommercialstandardsforresidualpalmeramaranthamaranthuspalmeriandwaterhempamaranthustuberculatuscontrol AT benjamincthrash comparisonofadiflufenicancontainingpremixturetocurrentcommercialstandardsforresidualpalmeramaranthamaranthuspalmeriandwaterhempamaranthustuberculatuscontrol AT ltombarber comparisonofadiflufenicancontainingpremixturetocurrentcommercialstandardsforresidualpalmeramaranthamaranthuspalmeriandwaterhempamaranthustuberculatuscontrol AT christylsprague comparisonofadiflufenicancontainingpremixturetocurrentcommercialstandardsforresidualpalmeramaranthamaranthuspalmeriandwaterhempamaranthustuberculatuscontrol AT tristenhavent comparisonofadiflufenicancontainingpremixturetocurrentcommercialstandardsforresidualpalmeramaranthamaranthuspalmeriandwaterhempamaranthustuberculatuscontrol |