scholarly journals Weed Management in Azuki Bean with Postemergence Herbicides

2020 ◽  
Vol 11 (09) ◽  
pp. 1467-1477
Author(s):  
Nader Soltani ◽  
Lynette Brown ◽  
Peter H. Sikkema
Keyword(s):  
Weed Management ◽  
Azuki Bean ◽  
Postemergence Herbicides

scholarly journals Pre- and Postemergence Herbicides for Use Around Palms and Cycads

EDIS ◽  
2007 ◽  
Vol 2007 (18) ◽  
Author(s):  
Robert H. Stamps ◽  
Jeffrey G. Norcini ◽  
Timothy K. Broschat ◽  
Charles W. Meister
Keyword(s):  
Weed Management ◽  
Maintenance Costs ◽  
Fact Sheet ◽  
Postemergence Herbicides

ENH-1070, a 9-page fact sheet by Robert H. Stamps, Jeffrey G. Norcini, Timothy K. Broschat, and Charles W. Meister, lists herbicides for use in nurseries to reduce weed management costs in nurseries and maintenance costs in landscapes. Includes a table of tolerant palms and cycads for pre-emergent and post-emergent herbicides. Published by the UF Department of Environmental Horticulture, August 2007.  

scholarly journals African star grass response to postemergence herbicides

2019 ◽  
Vol 43 ◽  
Author(s):  
Alexandre Magno Brighenti ◽  
Flávio Rodrigo Gandolfi Benites ◽  
Fausto Souza Sobrinho
Keyword(s):  
Nonionic Surfactant ◽  
Weed Management ◽  
Dry Matter ◽  
Field Experiments ◽  
Crop Management ◽  
Mineral Oil ◽  
Dry Matter Yield ◽  
Herbicide Application ◽  
Cynodon Nlemfuensis ◽  
Postemergence Herbicides

ABSTRACT Cynodon nlemfuensis Vanderyst, commonly called African star grass, is excellent forage in pasture formation and herd feeding. However, little information is available regarding weed management in areas of star grasses. Two field experiments were carried out in 2017 and 2018 to evaluate the response of African star grass to postemergence herbicides. The treatments applied were as follows: 2,4-D (1,340.0 g ae ha-1); 2,4-D + picloram (720.0 +192.0 g ae ha-1 + 0.3% v/v nonionic surfactant); fluroxypyr + picloram (80.0 + 80.0 g ae ha-1 + 0.3% v/v mineral oil); fluroxypyr + aminopyralid (160.0 + 80.0 g ae ha-1 + 0.3% v/v mineral oil); fluroxypyr + triclopyr (320.0 + 960.0 g ae ha-1 + 0.3% v/v mineral oil); bentazon (720.0 g ai ha-1 + 0.5% v/v mineral oil); imazapyr (25.0 g ai ha-1); monosodium methyl arsenate (MSMA) (1,440.0 g ai ha-1 + 0.1% v/v nonionic surfactant); atrazine + S-metolachlor (1,480.0 + 1,160.0 g ai ha-1); atrazine + tembotrione (1,000.0 + 100.8 g ai ha-1 + 0.3% v/v mineral oil) and a control without herbicide application. The most phytotoxic treatments for the African star grass plants were fluroxypyr + amininopyralid, fluroxypyr + triclopyr and atrazine + tembotrione. The dry matter yield of star grass plants was not reduced by the applications of 2,4-D, 2,4-D + picloram, bentazon, imazapyr, MSMA and atrazine + S-metolachlor. These herbicides can be considered potential practices in African star grass crop management.

scholarly journals Modeling of Glyphosate Application Timing in Glyphosate-Resistant Soybean

Weed Science ◽  
2011 ◽  
Vol 59 (3) ◽  
pp. 390-397 ◽  
Author(s):  
Ivan Sartorato ◽  
Antonio Berti ◽  
Giuseppe Zanin ◽  
Claudio M. Dunan
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Cropping Systems ◽  
Low Cost ◽  
Time Windows ◽  
Action Spectrum ◽  
Application Timing ◽  
Herbicide Resistant ◽  
Removal Time ◽  
Postemergence Herbicides

The introduction of herbicide-resistant crops and postemergence herbicides with a wide action spectrum shifted the research focus from how to when crops should be treated. To maximize net return of herbicide applications, the evolution of weed–crop competition over time must be considered and its effects quantified. A model for predicting the yield trend in relation to weed removal time, considering emergence dynamics and density, was tested on data from glyphosate-resistant soybean grown in cropping systems in Italy and Argentina. Despite an ample variation of weed emergence dynamics and weed load in the four trials, the model satisfactorily predicted yield loss evolution. The estimated optimum time for weed control (OTWC) varied from about 18 d after soybean emergence in Argentina to 20 to 23 d in Italy, with time windows for spraying ranging from 14 to 28 d. Within these limits a single glyphosate application ensures good weed control at low cost and avoids side effects like the more probable unfavorable weed flora evolution with double applications and the presence of residues in grains. Despite the apparent simplicity of weed control based on nonselective herbicides, the study outlines that many variables have to be considered to optimize weed management, particularly for the time evolution of the infestation and, subsequently, a proper timing of herbicide application.

scholarly journals 619 Temporal and Spatial Weed Control Effects on Tart Cherry Orchards

HortScience ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 554C-554
Author(s):  
Yahya K. Al-Hinai ◽  
Teryl R. Roper
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Shoot Growth ◽  
Tart Cherry ◽  
Early Season ◽  
Late Season ◽  
Cherry Orchard ◽  
Temporal And Spatial ◽  
June July ◽  
Postemergence Herbicides

This experiment was conducted to determine temporal and spatial weed management characteristics for tart cherry orchards. Annual ryegrass and lambsquarter were planted in tree rows of a 14-year-old tart cherry orchard. Vegetation was controlled with nonresidual herbicides (Gramoxone + B-1956) either all season, May, June, July, August, before harvest, after harvest, or not controlled. Shoot growth measurements showed significantly more growth by trees without weed competition during the entire season, May, June, and before harvest compared to the weedy control and postharvest, July, or August treatments. Weedy early season plots reduced the shoot growth by half. All season, before harvest, May, and June weed-free plots showed higher amounts of leaf N compared with weedy controls or late-season treatments. Early season weed control is more important than late season. Vegetation-free areas of 0, 2, 3, and 4 m2 were maintained during 1998 by postemergence herbicides. Tissue analysis showed higher N concentration in leaves with vegetation controlled to 2 m2 or more compared to the weedy control. The critical vegetation free area for young cherry trees is between 0 and 2 m2.

Influence of Postemergence Herbicides on Weed Management in Spring-Sown Linseed

2013 ◽  
Vol 105 (3) ◽  
pp. 821-826 ◽  
Author(s):  
Hassan Karimmojeni ◽  
Ahmad G. Pirbaloti ◽  
Per Kudsk ◽  
Vahid Kanani ◽  
Abbas Ghafori
Keyword(s):  
Weed Management ◽  
Postemergence Herbicides

scholarly journals Influence of Adjuvants on Efficacy of Imazapic and 2,4-DB

1999 ◽  
Vol 26 (1) ◽  
pp. 1-4 ◽  
Author(s):  
D. L. Jordan
Keyword(s):  
Weed Management ◽  
Field Experiments ◽  
Amaranthus Retroflexus ◽  
Major Influence ◽  
Xanthium Strumarium ◽  
Redroot Pigweed ◽  
Eclipta Prostrata ◽  
Pitted Morningglory ◽  
Postemergence Herbicides ◽  
Organosilicone Surfactant

Abstract Adjuvants can have a major influence on efficacy of postemergence herbicides. Imazapic and 2,4-DB are applied postemergence in peanut (Arachis hypogaea L.) to control a variety of weeds. Determining how adjuvants influence efficacy of these herbicides could lead to more efficient weed management. Field experiments were conducted during 1997 and 1998 to determine the influence of nonionic surfactant, crop oil concentrate, organosilicone surfactant, and a blend of organosilicone surfactant and methylated seed oil on efficacy of imazapic and 2,4-DB. No-adjuvant and nontreated controls were also included. Adjuvants did not increase redroot pigweed (Amaranthus retroflexus L.) or common cocklebur (Xanthium strumarium L.) control by imazapic. Only minor differences in control of eclipta (Eclipta prostrata L.), entireleaf morningglory (Ipomoea hederacea var. integriuscula Gray), and pitted morningglory (Ipomoea lacunosa L.) by imazapic were noted among adjuvants. Sicklepod [Senna obtusifolia (L.) Erwin and Barneby] and pitted morningglory control increased when 2,4-DB was applied with adjuvants. Common cocklebur control was improved in one of three experiments when adjuvants were applied with 2,4-DB. Redroot pigweed and entireleaf morningglory control by 2,4-DB was not affected by adjuvants.

scholarly journals Herbicide Resistance Management: Recent Developments and Trends

Plants ◽  
2019 ◽  
Vol 8 (6) ◽  
pp. 161 ◽  
Author(s):  
Hugh J. Beckie ◽  
Michael B. Ashworth ◽  
Ken C. Flower
Keyword(s):  
Weed Management ◽  
Crop Production ◽  
Soil Seed Bank ◽  
Resistance Management ◽  
Seed Banks ◽  
Weed Seed ◽  
Recent Developments ◽  
Evolution Of Resistance ◽  
Sites Of Action ◽  
Postemergence Herbicides

This review covers recent developments and trends in herbicide-resistant (HR) weed management in agronomic field crops. In countries where input-intensive agriculture is practiced, these developments and trends over the past decade include renewed efforts by the agrichemical industry in herbicide discovery, cultivation of crops with combined (stacked) HR traits, increasing reliance on preemergence vs. postemergence herbicides, breeding for weed-competitive crop cultivars, expansion of harvest weed seed control practices, and advances in site-specific or precision weed management. The unifying framework or strategy underlying these developments and trends is mitigation of viable weed seeds into the soil seed bank and maintaining low weed seed banks to minimize population proliferation, evolution of resistance to additional herbicidal sites of action, and spread. A key question going forward is: how much weed control is enough to consistently achieve the goal of low weed seed banks? The vision for future HR weed management programs must be sustained crop production and profitability with reduced herbicide (particularly glyphosate) dependency.

scholarly journals Weed management in azuki bean with preplant incorporated herbicides

2020 ◽  
Author(s):  
Nader Soltani ◽  
Lynette Brown ◽  
Peter H. Sikkema
Keyword(s):  
Weed Management ◽  
Azuki Bean

scholarly journals Selectivity of Pre and Postemergence Herbicides in Single or Combined Applications in Castor Crop

Agronomy ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 19
Author(s):  
Augusto G. F. Costa ◽  
Valdinei Sofiatti ◽  
Cleber D. G. Maciel ◽  
Jalmi G. Freitas ◽  
Gleibson D. Cardoso ◽  
...  
Keyword(s):  
Weed Management ◽  
Arid Region ◽  
Field Experiments ◽  
Ricinus Communis ◽  
Northeast Brazil ◽  
Ricinus Communis L ◽  
Chlorimuron Ethyl ◽  
Semi Arid Region ◽  
Postemergence Herbicides ◽  
Semi Arid

One of the main challenges in castor crop (Ricinus communis L.) production is efficient weed management mainly due to limited options of selective herbicides. This study evaluated the selectivity of herbicides applied alone or in combination in pre- and postemergence applications in castor crop. Two field experiments were carried out under irrigation conditions in a semi-arid region of Northeast Brazil. It was found that the visual symptoms of phytointoxication of the herbicides used on castor were mild in both experiments. Consequently, there were no significant interferences on plant height, number of racemes, and grain (seed) yield. Pre-emergence applications (g ha−1) of trifluralin (1800), pendimethalin (1500), clomazone (750), clomazone + trifluralin (750 + 1800), and clomazone + pendimethalin (750 + 1500) followed by chlorimuron-ethyl in postemergence (15 g ha−1) are selective to castor. The application (g ha−1) of pendimethalin + clomazone (1000 + 500) in pre-emergence, associated with chlorimuron-ethyl (10 and 15), metamitron (2800 and 4200), ethoxysulfuron (60 and 80), or halosulfuron-methyl (75 and 112.5) in one or two applications in postemergence, as single or split applications, in an interval of 14 days, are selective to castor crop.

scholarly journals Glyphosate Resistance Confirmation and Field Management of Red Brome (Bromus rubens L.) in Perennial Crops Grown in Southern Spain

Agronomy ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 535
Author(s):  
José G. Vázquez-García ◽  
Patricia Castro ◽  
Hugo E. Cruz-Hipólito ◽  
Teresa Millan ◽  
Candelario Palma-Bautista ◽  
...  
Keyword(s):  
Weed Management ◽  
Shikimic Acid ◽  
Southern Spain ◽  
Integrated Weed Management ◽  
Fresh Weight ◽  
Perennial Crops ◽  
Resistance Factors ◽  
Bromus Rubens ◽  
Scientific Report ◽  
Postemergence Herbicides

The excessive use of the herbicide glyphosate on annual and perennial crops grown in Southern Spain has caused an increase in resistant weed populations. Bromus rubens has begun to spread through olive and almond cultivars due to low glyphosate control over these species, whereas previously it had been well controlled with field dose (1080 g ae ha−1). Characterization using Simple Sequence Repeat (SSR) markers confirmed the presence of B. rubens collected in Andalusia. A rapid shikimic acid accumulation screening showed 17 resistant (R) populations with values between 300 and 700 µg shikimate g−1 fresh weight and three susceptible (S) populations with values between 1200 and 1700 µg shikimate g−1 fresh weight. In dose–response experiments the GR50 values agreed with previous results and the resistance factors (RFs: GR50 R/GR50 S (Br1)) were between 4.35 (Br9) and 7.61 (Br19). Foliar retention assays shown no differences in glyphosate retention in both R and S populations. The tests carried out in a resistant field (Br10) demonstrated the control efficacy of pre-emergence herbicides since flazasulfuron in the tank mix with glyphosate had up to 80% control 15 to 120 days after application (DAA) and grass weed postemergence herbicides, such as propaquizafop + glyphosate and quizalofop + glyphosate, had up to 90% control 15 to 90 DAA. Results confirm the first scientific report of glyphosate-resistant B. rubens worldwide; however, the use of herbicides with another mode of action (MOA) is the best tool for integrated weed management.

Sign in / Sign up

Export Citation Format

Share Document