Evaluation of Preemergence Herbicide Programs for Control of Protoporphyrinogen Oxidase-Resistant Amaranthus palmeri in Soybean
Protoporphyrinogen oxidase- (PPO-) resistant Amaranthus palmeri (S.) Wats. (Palmer amaranth) was confirmed in Arkansas in 2015. Field trials were conducted in Crawfordsville, Gregory, and Marion, Arkansas in 2016, and Crawfordsville and Marion in 2017, assessing PPO-resistant Palmer amaranth control...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
|
| Series: | International Journal of Agronomy |
| Online Access: | http://dx.doi.org/10.1155/2021/6652382 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832555234267758592 |
|---|---|
| author | Michael M. Houston L. Tom Barber Jason K. Norsworthy Trent L. Roberts |
| author_facet | Michael M. Houston L. Tom Barber Jason K. Norsworthy Trent L. Roberts |
| author_sort | Michael M. Houston |
| collection | DOAJ |
| description | Protoporphyrinogen oxidase- (PPO-) resistant Amaranthus palmeri (S.) Wats. (Palmer amaranth) was confirmed in Arkansas in 2015. Field trials were conducted in Crawfordsville, Gregory, and Marion, Arkansas in 2016, and Crawfordsville and Marion in 2017, assessing PPO-resistant Palmer amaranth control options in Glycine max (L.) Merr. (soybean). Twelve trials consisted of 26 preemergence (PRE) treatments, evaluated for Palmer amaranth control and density reduction at 28 days after treatment (DAT). Treatments that consisted of PPO- or acetolactate synthase- (ALS-) inhibiting herbicides such as flumioxazin (72 g ai ha−1) or sulfentrazone + cloransulam (195 g ha−1 + 25 g ha−1) controlled Palmer amaranth <60%. At 28 DAT, treatments including mixtures of a very-long-chain fatty acid (VLCFA) plus the photosystem II- (PSII-) inhibiting herbicide metribuzin provided increased control over single herbicide sites of action (SOA) or herbicides mixtures to which Palmer amaranth was resistant. Pyroxasulfone + metribuzin (149 g ha−1 + 314 g ha−1) controlled Palmer amaranth 91% control across twelve trials at 28 DAT. S-metolachlor alone did not provide consistent, acceptable control of PPO-resistant Palmer amaranth (55–77%); subsequent research has determined that these populations are resistant to S-metolachlor. A minimum of two effective herbicides should be included in soybean PRE programs for control of PPO-resistant Palmer amaranth. |
| format | Article |
| id | doaj-art-1fc36112f5a84d578b7bd93fece974ac |
| institution | Kabale University |
| issn | 1687-8159 1687-8167 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Agronomy |
| spelling | doaj-art-1fc36112f5a84d578b7bd93fece974ac2025-02-03T05:49:16ZengWileyInternational Journal of Agronomy1687-81591687-81672021-01-01202110.1155/2021/66523826652382Evaluation of Preemergence Herbicide Programs for Control of Protoporphyrinogen Oxidase-Resistant Amaranthus palmeri in SoybeanMichael M. Houston0L. Tom Barber1Jason K. Norsworthy2Trent L. Roberts3Department of Crop Soil and Environmental Sciences, University of Arkansas, Fayetteville, AR 72704, USADepartment of Crop Soil and Environmental Sciences, University of Arkansas, Fayetteville, AR 72704, USADepartment of Crop Soil and Environmental Sciences, University of Arkansas, Fayetteville, AR 72704, USADepartment of Crop Soil and Environmental Sciences, University of Arkansas, Fayetteville, AR 72704, USAProtoporphyrinogen oxidase- (PPO-) resistant Amaranthus palmeri (S.) Wats. (Palmer amaranth) was confirmed in Arkansas in 2015. Field trials were conducted in Crawfordsville, Gregory, and Marion, Arkansas in 2016, and Crawfordsville and Marion in 2017, assessing PPO-resistant Palmer amaranth control options in Glycine max (L.) Merr. (soybean). Twelve trials consisted of 26 preemergence (PRE) treatments, evaluated for Palmer amaranth control and density reduction at 28 days after treatment (DAT). Treatments that consisted of PPO- or acetolactate synthase- (ALS-) inhibiting herbicides such as flumioxazin (72 g ai ha−1) or sulfentrazone + cloransulam (195 g ha−1 + 25 g ha−1) controlled Palmer amaranth <60%. At 28 DAT, treatments including mixtures of a very-long-chain fatty acid (VLCFA) plus the photosystem II- (PSII-) inhibiting herbicide metribuzin provided increased control over single herbicide sites of action (SOA) or herbicides mixtures to which Palmer amaranth was resistant. Pyroxasulfone + metribuzin (149 g ha−1 + 314 g ha−1) controlled Palmer amaranth 91% control across twelve trials at 28 DAT. S-metolachlor alone did not provide consistent, acceptable control of PPO-resistant Palmer amaranth (55–77%); subsequent research has determined that these populations are resistant to S-metolachlor. A minimum of two effective herbicides should be included in soybean PRE programs for control of PPO-resistant Palmer amaranth.http://dx.doi.org/10.1155/2021/6652382 |
| spellingShingle | Michael M. Houston L. Tom Barber Jason K. Norsworthy Trent L. Roberts Evaluation of Preemergence Herbicide Programs for Control of Protoporphyrinogen Oxidase-Resistant Amaranthus palmeri in Soybean International Journal of Agronomy |
| title | Evaluation of Preemergence Herbicide Programs for Control of Protoporphyrinogen Oxidase-Resistant Amaranthus palmeri in Soybean |
| title_full | Evaluation of Preemergence Herbicide Programs for Control of Protoporphyrinogen Oxidase-Resistant Amaranthus palmeri in Soybean |
| title_fullStr | Evaluation of Preemergence Herbicide Programs for Control of Protoporphyrinogen Oxidase-Resistant Amaranthus palmeri in Soybean |
| title_full_unstemmed | Evaluation of Preemergence Herbicide Programs for Control of Protoporphyrinogen Oxidase-Resistant Amaranthus palmeri in Soybean |
| title_short | Evaluation of Preemergence Herbicide Programs for Control of Protoporphyrinogen Oxidase-Resistant Amaranthus palmeri in Soybean |
| title_sort | evaluation of preemergence herbicide programs for control of protoporphyrinogen oxidase resistant amaranthus palmeri in soybean |
| url | http://dx.doi.org/10.1155/2021/6652382 |
| work_keys_str_mv | AT michaelmhouston evaluationofpreemergenceherbicideprogramsforcontrolofprotoporphyrinogenoxidaseresistantamaranthuspalmeriinsoybean AT ltombarber evaluationofpreemergenceherbicideprogramsforcontrolofprotoporphyrinogenoxidaseresistantamaranthuspalmeriinsoybean AT jasonknorsworthy evaluationofpreemergenceherbicideprogramsforcontrolofprotoporphyrinogenoxidaseresistantamaranthuspalmeriinsoybean AT trentlroberts evaluationofpreemergenceherbicideprogramsforcontrolofprotoporphyrinogenoxidaseresistantamaranthuspalmeriinsoybean |