Weed Technology最新文献_第7页

Use of Low Tunnels to Describe Effects of Herbicide, Adjuvant, and Target Surface on Dicamba Volatility 利用低隧道描述除草剂、佐剂和靶表面对麦草畏挥发性的影响

3区农林科学

Weed Technology Pub Date : 2023-10-16 DOI: 10.1017/wet.2023.74

Maria Leticia Zaccaro-Gruener, Jason K. Norsworthy, Leonard B Piveta, L. Tom Barber, Andy Mauromoustakos, Thomas C. Mueller, Trenton L. Roberts

{"title":"Use of Low Tunnels to Describe Effects of Herbicide, Adjuvant, and Target Surface on Dicamba Volatility","authors":"Maria Leticia Zaccaro-Gruener, Jason K. Norsworthy, Leonard B Piveta, L. Tom Barber, Andy Mauromoustakos, Thomas C. Mueller, Trenton L. Roberts","doi":"10.1017/wet.2023.74","DOIUrl":"https://doi.org/10.1017/wet.2023.74","url":null,"abstract":"Abstract Investigations of the relevance of low tunnel methodology and air sampling concerning the off-target movement of dicamba were conducted from 2018 to 2022, focused primarily on volatility. This research, divided into three experiments, evaluated the impact of herbicides and adjuvants added to dicamba and the type of surface treated on dicamba volatility. Treatment combinations included glyphosate and glufosinate, the presence of a simulated contamination rate of ammonium sulfate (AMS), the benefit of a volatility reduction agent (VRA), and a vegetated (dicamba-resistant cotton) or soil surface treated with dicamba. Volatility assessments included air sampling collected over 48 h. Dicamba treatments were applied four times to each of two bare soil or cotton trays and placed inside the tunnels. The extraction and quantification of dicamba from air samples were conducted. Field assessments included the maximum and average visible injury in bioindicator soybean and the lateral movement of dicamba damage expressed by the furthest distance from the center of the plots to the position in which plants had 5% injury. Adding glufosinate and glyphosate to dicamba increased the dicamba amount in air samples. A simulated tank contamination rate of AMS (0.005% v/v) did not impact dicamba emissions compared to a treatment lacking AMS. Adding a VRA reduced dicamba in air samples by 70% compared to treatment without the adjuvant. Dicamba treatments applied on vegetation generally produced greater amounts of dicamba detected than treatments applied to bare soil. Field assessment results usually followed differences in dicamba concentration by treatments tested. Results showed that low tunnel methodology allowed simultaneous comparisons of several treatment combinations concerning dicamba volatility.","PeriodicalId":23710,"journal":{"name":"Weed Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136112522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing Winter Rye Termination by Mixing Glyphosate with Other Herbicides Using Water or UAN as the Carrier 以水或尿素为载体，草甘膦与其他除草剂混用提高冬黑麦去除率

3区农林科学

Weed Technology Pub Date : 2023-10-16 DOI: 10.1017/wet.2023.73

Olivia M. Noorenberghe, Peter H. Sikkema, Michael J. Cowbrough, David C. Hooker, Nader Soltani, François J. Tardif

{"title":"Enhancing Winter Rye Termination by Mixing Glyphosate with Other Herbicides Using Water or UAN as the Carrier","authors":"Olivia M. Noorenberghe, Peter H. Sikkema, Michael J. Cowbrough, David C. Hooker, Nader Soltani, François J. Tardif","doi":"10.1017/wet.2023.73","DOIUrl":"https://doi.org/10.1017/wet.2023.73","url":null,"abstract":"Abstract Herbicides are often used to terminate cover crops. Producers would like to use herbicides that work quickly, are effective, and do not increase the risk of selecting herbicide-resistant weeds. Eight experiments were conducted to determine if mixing glyphosate (900 g a.e. ha -1 ) with rimsulfuron (15 g a.i. ha -1 ), mesotrione (100 g a.i. ha -1 ), or rimsulfuron + mesotrione enhances winter rye control and to ascertain if using urea ammonium nitrate (UAN) as the herbicide carrier improves and accelerates herbicide efficacy. Winter rye control was assessed 1, 2, 3, and 4 weeks after application (WAA) and biomass was measured 4 WAA. The addition of rimsulfuron, mesotrione, or rimsulfuron + mesotrione to glyphosate did not enhance winter rye control. Similarly, using UAN as the herbicide carrier did not improve or accelerate herbicide efficacy. Glyphosate alone provided the highest level of winter rye control. The addition of rimsulfuron, mesotrione, or rimsulfuron + mesotrione to glyphosate did not increase the level or speed of control. However, mixing glyphosate with rimsulfuron, mesotrione, or rimsulfuron + mesotrione adds other modes of action without compromising winter rye control.","PeriodicalId":23710,"journal":{"name":"Weed Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136112515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ethofumesate resistant annual bluegrass (Poa annua) in grass seed production systems 禾草种子生产系统中抗乙硫马酯的一年生蓝草

3区农林科学

Weed Technology Pub Date : 2023-10-13 DOI: 10.1017/wet.2023.68

Vera Vukovic, Clint M. Mattox, Alec R. Kowalewski, Brandon C. McNally, Cale A. Bigelow, Stephen L. Meyers, Jim T. Brosnan, Aaron J. Patton

{"title":"Ethofumesate resistant annual bluegrass (Poa annua) in grass seed production systems","authors":"Vera Vukovic, Clint M. Mattox, Alec R. Kowalewski, Brandon C. McNally, Cale A. Bigelow, Stephen L. Meyers, Jim T. Brosnan, Aaron J. Patton","doi":"10.1017/wet.2023.68","DOIUrl":"https://doi.org/10.1017/wet.2023.68","url":null,"abstract":"Abstract The prolific seed production and polyploidy of annual bluegrass allow for the rapid development of herbicide resistance. Ethofumesate-resistant annual bluegrass plants were identified in the 1990s in grass seed production in Oregon but their prevalence and distribution are not well documented. Therefore, a dose-response experiment was initiated to determine the potential level of ethofumesate resistance in seed production systems. Seeds from 55 annual bluegrass populations were obtained from three sources: seed production fields (31 populations), seed cleaning process (6 populations), and seed testing lots prior to retail distribution (18 populations). Additionally, two populations, one with known ethofumesate resistance and one with known susceptibility, were identified in preliminary testing and used as controls in this experiment. Seed from each collected population was increased. Individual seedlings were then transplanted into separate cone-tainers, grown to a size of 2 to 3 tillers in the greenhouse, and then sprayed using a compressed air track spray chamber with ten doses of ethofumesate: 0, 0.56, 1.1, 2.8, 5.6, 8.4, 11.2, 16.8, 22.4, and 44.8 kg ai ha −1 ; with 0.84 to 2.2 kg ha −1 as the label application rates for perennial ryegrass. The resistant to susceptible ratio of populations across all sources ranged from 0.5 to 5.5. The most resistant populations found in production fields, seed cleaning, and seed testing lots had ED 50 values of 12.1, 9.4, and 13.1 kg ha −1 , respectively. Further, 68% of the populations found in production fields had the effective dose necessary to kill 50% of the population (ED 50 ) higher than 6 kg ha −1 , indicating common annual bluegrass resistance in grass seed production. As such, herbicides alone will likely be ineffective at controlling annual bluegrass, and integrated weed management strategies should be implemented by growers.","PeriodicalId":23710,"journal":{"name":"Weed Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135854127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Responses of Rice Genotypes to Foliar-Applied Metribuzin 水稻基因型对叶面施用美曲霉嗪的反应

3区农林科学

Weed Technology Pub Date : 2023-10-13 DOI: 10.1017/wet.2023.76

Sarah L. Marsh, Kassim Al-Khatib

{"title":"Responses of Rice Genotypes to Foliar-Applied Metribuzin","authors":"Sarah L. Marsh, Kassim Al-Khatib","doi":"10.1017/wet.2023.76","DOIUrl":"https://doi.org/10.1017/wet.2023.76","url":null,"abstract":"Abstract The increasing development of herbicide resistance in weeds found in rice cropping systems has encouraged researchers to evaluate alternate herbicides to prevent and manage herbicide-resistant weed biotypes. Metribuzin is a photosynthetic-inhibiting herbicide that controls various important grass and broadleaf weeds. Several crops, including soybeans, wheat, peas, and potatoes, have shown differential varietal responses to metribuzin. To determine whether rice has differential varietal responses to metribuzin for potential utilization in a rice breeding program, greenhouse experiments were conducted to evaluate the responses of 142 long-, medium-, and short-grain rice genotypes to the herbicide. Metribuzin was applied at 0, 22, 44, 88, 176, and 352 g ai ha -1 when rice plants were in the three- to four-leaf stage. Crop response regarding phytotoxicity, height reduction, and biomass reduction was evaluated. Metribuzin caused significant injury to all rice genotypes tested, but short-grain rice genotypes were, on average, more susceptible than medium- and long-grain rice. Short-grain rice genotypes generally had greater height reduction and produced less biomass than long-grain or medium-grain rice genotypes. Crop visual injury ratings were correlated with plant height reductions and biomass reductions. The results indicate that the level of metribuzin tolerance in rice is inadequate for commercial use; however, further research is needed to develop higher levels of herbicide resistance by mutagenized rice cultivars.","PeriodicalId":23710,"journal":{"name":"Weed Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135855335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The First Weed Management Textbook in the United States (Part 2) 美国第一本杂草管理教材(下)

3区农林科学

Weed Technology Pub Date : 2023-10-12 DOI: 10.1017/wet.2023.77

John Byrd, David Russell, Kayla Broster

引用次数: 0

Evaluating cover crop tolerance to corn residual herbicides using field treated soil in greenhouse bioassay 温室生物试验中利用田间处理土壤评价覆盖作物对玉米残留除草剂的耐受性

3区农林科学

Weed Technology Pub Date : 2023-10-12 DOI: 10.1017/wet.2023.72

Tatiane Severo Silva, Nicholas John Arneson, Daniel Valadão Silva, Rodrigo Werle

{"title":"Evaluating cover crop tolerance to corn residual herbicides using field treated soil in greenhouse bioassay","authors":"Tatiane Severo Silva, Nicholas John Arneson, Daniel Valadão Silva, Rodrigo Werle","doi":"10.1017/wet.2023.72","DOIUrl":"https://doi.org/10.1017/wet.2023.72","url":null,"abstract":"Abstract More growers across the US Midwest are considering interseeding or overseeding cover crops into corn for soil health purposes. One challenge of this practice is the potential injury from soil residual herbicides applied preemergence (PRE) for weed control in corn to the interseeded and overseeded cover crop species. Field treated soil was collected in 2021 and 2022 at Janesville and Lancaster, WI to investigate the impact of PRE residual herbicides on establishment of interseeded and overseeded cover crops via greenhouse bioassay. Soil samples (0-5 cm depth) were collected from field experiments at 0, 10, 20, 30, 40, 50, 60, and 70 days after treatment (DAT). Treatments consisted of 14 single and multiple sites of action PRE herbicides plus a nontreated check (NTC). Four bioindicator cover crop species were used in the greenhouse bioassay: annual ryegrass, cereal rye, radish, and red clover. Cover crop biomass was collected 28 days after bioassay seeding. Cover crop species responded differently across herbicide treatments. Annual ryegrass and cereal rye were sensitive to treatments containing herbicide group 15, whereas groups 2, 4, 5, 14, and 27 had minimal impact on their establishment when field soil was collected at 30 DAT (interseeding scenario) and 70 DAT (overseeding scenario) compared to the NTC. Radish and red clover were sensitive to herbicide groups 2, 4, and 27, whereas groups 5, 14, and 15 had minimal impact on their establishment. Annual ryegrass, radish, and red clover were more sensitive to PRE herbicides containing two and three sites of action than herbicides with a single site of action. Based on these greenhouse bioassay results, cover crop species should be carefully selected depending on the soil residual herbicide when interseeded and overseeded into corn. Field studies will be conducted to validate these results and support recommendations to growers interested in this system.","PeriodicalId":23710,"journal":{"name":"Weed Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135923632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthetic auxin herbicides do not injure intermediate wheatgrass or affect grain yield 人工合成的生长素除草剂对中间麦草不造成伤害，也不影响籽粒产量

3区农林科学

Weed Technology Pub Date : 2023-10-04 DOI: 10.1017/wet.2023.71

Erica D. Shoenberger, Jacob M. Jungers, Eugene P. Law, Clair L. Keene, Antonio DiTommaso, Craig C. Sheaffer, Donald L. Wyse, Valentin D. Picasso, David E. Stoltenberg

{"title":"Synthetic auxin herbicides do not injure intermediate wheatgrass or affect grain yield","authors":"Erica D. Shoenberger, Jacob M. Jungers, Eugene P. Law, Clair L. Keene, Antonio DiTommaso, Craig C. Sheaffer, Donald L. Wyse, Valentin D. Picasso, David E. Stoltenberg","doi":"10.1017/wet.2023.71","DOIUrl":"https://doi.org/10.1017/wet.2023.71","url":null,"abstract":"Abstract Intermediate wheatgrass (IWG) is a cool-season perennial grass developed as a dual-purpose grain and forage crop. One barrier to adopting this crop is a lack of information on the effects of herbicides on IWG for grain production. An experiment was conducted to evaluate herbicide effects on IWG grain yield, crop injury, and weed control over 2 yr (2019-2021) at sites in Wisconsin, Minnesota, New York, and North Dakota, USA. This evaluation included Group 4 broadleaf herbicides registered in wheat: 2,4-D amine, clopyralid, MCPA, and a mixture of clopyralid + MCPA. Each herbicide or mixture was applied at 1X and 2X the labeled wheat application rate to newly planted and established (1 to 5 yr old) IWG stands in the fall or spring. Applications were made during IWG tillering or jointing stages in the fall or during the jointing stage in the spring. Across site years, application timing, herbicide, and application rate showed no effect on IWG grain yield or plant injury. Broadleaf weed control ranged from 71 to 92% across herbicide treatments relative to the nontreated check at the WI site while weed control at the MN site was variable among treatments. At the NY site, herbicides were equally effective for broadleaf weed suppression, whereas weed pressure was very low at the ND site and treatments did not affect weed cover. The results show that newly planted and established stands of IWG are tolerant to the synthetic auxin herbicides 2,4-D amine, clopyralid, and MCPA when applied during tillering or jointing in the fall or during jointing in the spring. Synthetic auxins represent a potentially useful tool for weed control in IWG cropping systems, especially for problematic broadleaf weed species.","PeriodicalId":23710,"journal":{"name":"Weed Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135548652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

WET volume 37 issue 5 Cover and Front matter WET 第 37 卷第 5 期封面和封底

IF 1.4 3区农林科学

Weed Technology Pub Date : 2023-10-01 DOI: 10.1017/wet.2023.94

引用次数: 0

Multi-State Screening of Palmer Amaranth (Amaranthus palmeri) and Waterhemp (Amaranthus tuberculatus) Sensitivity to Glufosinate, Dicamba and 2,4-D in the United States 美国苋菜(Amaranthus palmeri)和水麻(Amaranthus tuberculatus)对草铵膦、麦草畏和2,4- d敏感性的多态筛选

3区农林科学

Weed Technology Pub Date : 2023-09-29 DOI: 10.1017/wet.2023.69

Daljit Singh, Andrew Tyre, Alejandro Perez-Jones, Jenny Krebel, John Willis, Jeffrey Herrmann, Tracy Klingaman, Graham Head, Chandrashekar Aradhya

{"title":"Multi-State Screening of Palmer Amaranth (Amaranthus palmeri) and Waterhemp (Amaranthus tuberculatus) Sensitivity to Glufosinate, Dicamba and 2,4-D in the United States","authors":"Daljit Singh, Andrew Tyre, Alejandro Perez-Jones, Jenny Krebel, John Willis, Jeffrey Herrmann, Tracy Klingaman, Graham Head, Chandrashekar Aradhya","doi":"10.1017/wet.2023.69","DOIUrl":"https://doi.org/10.1017/wet.2023.69","url":null,"abstract":"Abstract Herbicide resistance in Palmer amaranth and waterhemp is on the rise and poses a great concern to growers in the United States. A multistate screening was conducted for these two weed species in the United States to assess their sensitivity to glufosinate, dicamba, and 2,4-D. The screening was designed to understand the weed sensitivity landscape and emerging trends in resistance evolution by testing each herbicide at its respective label rate and at half the label rate. A total of 303 weed seed accessions from 21 states representing 162 Palmer amaranth and 141 waterhemp seeds were collected from grower fields in 2019 and screened in greenhouse conditions. Statistical power of different sample sizes and probability of survivors in each accession were estimated for each species and herbicide treatment. Overall, the efficacy of glufosinate, dicamba, and 2,4-D against all these accessions was excellent, with greater than 90% average injury. The variability in herbicide injury, if any, was greater with half the label rate of 2,4-D in some Palmer amaranth accessions, while waterhemp accessions had exhibited variable sensitivity with half the label rate of dicamba and glufosinate. The study highlights the value of monitoring weeds for herbicide sensitivity across broader landscape and the importance of glufosinate, dicamba, and 2,4-D herbicides in managing troublesome weeds as part of a diversified weed control program integrated with other chemical, mechanical and cultural practices.","PeriodicalId":23710,"journal":{"name":"Weed Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135198959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Chemical Control and Seasonal Application Options for Smutgrass (Sporobolus indicus) Smutgrass (Sporobolus indicus)化学防治评价及季节施用选择

3区农林科学

Weed Technology Pub Date : 2023-09-29 DOI: 10.1017/wet.2023.70

Zachary S. Howard, Scott A. Nolte, Mark Hussey, Morgan L. Treadwell, Brent Sellers

{"title":"Evaluation of Chemical Control and Seasonal Application Options for Smutgrass (Sporobolus indicus)","authors":"Zachary S. Howard, Scott A. Nolte, Mark Hussey, Morgan L. Treadwell, Brent Sellers","doi":"10.1017/wet.2023.70","DOIUrl":"https://doi.org/10.1017/wet.2023.70","url":null,"abstract":"Abstract Smutgrass is a non-native perennial weed that is problematic because of its poor palatability to cattle and its difficulty to control once established. Limited literature exists to explain the effectiveness of herbicides other than hexazinone for smutgrass control and forage injury. This study aimed to evaluate seasonal applications of labeled herbicides used on forage for maximum smutgrass control. The second objective was to evaluate preemergent herbicides and hexazinone for their ability to control smutgrass germinating from seed. Hexazinone, nicosulfuron + metsulfuron-methyl, and glyphosate + imazapic were the most effective postemergence treatments, while quinclorac exhibited little activity on smutgrass. Common bermudagrass forage fully recovered from all treatments by 3 mo after treatment. Hexazinone, nicosulfuron + metsulfuron methyl, glyphosate, and imazapic were applied postemergence to smutgrass in spring, summer, and fall. Summer applications of hexazinone resulted in the greatest level of control, while spring treatments provided the least control. Applications of hexazinone or glyphosate resulted in the most effective smutgrass control. However, fall applications resulted in the least forage injury. Results of the study of preemergence herbicides indicate that treatments with indaziflam and hexazinone provide adequate control of germinating smutgrass seedlings in the greenhouse at 0.25×, 0.5×, and 0.75× of the lowest recommended labeled rate for seedling grass control. Indaziflam treatments prevented the emergence of any visible smutgrass seedling tissue, compared to hexazinone, which fully controlled the germinating seedlings by 21 d after treatment, whereas pendimethalin significantly reduced seedling numbers at the 0.5× and 0.75× rates.","PeriodicalId":23710,"journal":{"name":"Weed Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135199073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0