Efficiency of herbicide ACRIS (dimethenamid-P + terbuthylazine) on sunflower

Trials with a herbicide Acris, SE (280 g/l of dimethenamid-P + 250 g/l of terbuthylazine) were carried out in the Astrakhan, Krasnodar and Altai regions. The aim of this work is studying biological and economic efficiency of pre-emergence treatment with the combined herbicide Acris, SE on sunflower. The treatment with the herbicide Acris, SE (2.0–3.0 l/ha) made it possible to prevent many annual dicotyledonous weeds: Chenopodium album, Amaranthus retroflexus, Fagopyrum tataricum, Abutilon theophrastii and Solanum nigrum. Ambrosia artemisiifolia, found in the Krasnodar region, is less sensitive to this herbicide. The herbicide Acris, SE was highly effective in suppressing annual monocotyledonous weeds: Echinochloa crusgalli and Panicum miliaceum. Efficiency of the herbicide ACRIS was at the level of the standard Gardo Gold, and at the maximum application rate (3.0 l/ha) exceeded the standard one. Pre-emergence soil treatment with the herbicide Acris, SE did not have a negative effect on the germination of sunflower. Significant increase of sunflower yield was noted in all regions of trials. The most significant values were observed on varieties Flagman and R 453 in the Krasnodar region (8.7–9.2 and 7.0–7.5 quintal/ha, respectively). The lowest yields of sunflower in untreated control (10.2 and 11.0 quintal/ha) were observed in the Altai region, but the relative increase in yield in variants with the herbicide Acris, SE application was maximum (from 29.1 to 67.6% in relation to yields in untreated control). In the Astrakhan region, application rates of the herbicide Acris, SE of 2.5 and 3.0 l/ha were characterized by statistical significance (increases up to 2.5 and 3.2 quintal/ha, respectively).

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Efficiency of glyphosate and ammonium glufosinate against common ragweed (Ambrosia artemisiifolia L.) in vineyards

Horticulture and viticulture ◽

10.31676/0235-2591-2019-4-45-50 ◽

2019 ◽

pp. 45-50

Author(s):

A. S. Golubev ◽

I. P. Borushko ◽

V. I. Dolzhenko

Keyword(s):

Quantitative Method ◽

Application Rate ◽

Ambrosia Artemisiifolia ◽

Cabernet Sauvignon ◽

Weed Species ◽

Common Ragweed ◽

Glufosinate Ammonium ◽

Ammonium Glufosinate ◽

Effi Ciency ◽

Krasnodar Region

The use of glyphosate (720-2880 g/h a.i.) and ammonium glufosinate herbicides (375-1500 g/h a.i.) to control of common ragweed (Ambrosia artemisiifolia L.) has been studied in trials (2013-2018) in the vineyards of Rkatsiteli, Liang and Cabernet Sauvignon in Abinsk district of Krasnodar region. Accounting of weeds was done by a quantitative method with counting the number of each weed species in each plot. Counts were performed before the treatment and in 15, 30 and 45 days after spraying. The effi cacy of herbicide was determined in relation to the untreated control and expressed as a percentage. The main evaluation criterion was the eff ectiveness of 100 % in one of the accounts or the average (for all counts) effi ciency of more than 90 %. The results showed that in 95 % of trials spraying of 1440 g/h of glyphosate 1440 g/h of glyphosate (a.i.) and higher ensured processing effi ciency exceeding 90 %. Herbicides such as Roundup, containing 360 g/l of isopropylamine salt, can be recommended for use to control of common ragweed in the application rate 4.0 l/ha. Destruction of all common ragweed observed when using not less than 600 g/h glufosinate ammonium. Thus, Herbicides such as Basta, containing 150 g/l of ammonium glufosinate, to control of common ragweed should be applied by fractional application vegetative weeds (2.5 l/h + 1.5 l/h).

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Effect of reduced herbicide rates on weed control, environmental impact and profitability of corn

Canadian Journal of Plant Science ◽

10.4141/cjps08216 ◽

2009 ◽

Vol 89 (5) ◽

pp. 969-975

Author(s):

Nader Soltani ◽

Richard J Vyn ◽

Laura L Van Eerd ◽

Christy Shropshire ◽

Peter H Sikkema

Keyword(s):

Zea Mays ◽

Environmental Impact ◽

Zea Mays L ◽

Chenopodium Album ◽

Amaranthus Retroflexus ◽

Ambrosia Artemisiifolia ◽

Corn Yield ◽

Profit Margins ◽

Profitability Analysis ◽

Biomass Reduction

A study was conducted over a 3-yr period (2003, 2004, and 2005) to evaluate the effect of reduced herbicide rates - 20, 40, 60, 80, and 100% of the manufacturer’s recommended rate (MRR) - on weed biomass reduction, environmental impact (EI), yield, and profitability of corn (Zea mays L.) in Ontario. The herbicide rate required to provide 95% biomass reduction of velvetleaf (Abutilon theophrasti Medic.), redroot pigweed (Amaranthus retroflexus L.), common ragweed (Ambrosia artemisiifolia L.), common lambsquarters (Chenopodium album L.), and annual grasses was 92, 30, 41, 28, and 83% of the MRR for isoxaflutole plus atrazine, >200, 119, 23, 23, and 117% of the MRR for dimethenamid plus dicamba/atrazine, 141, 72, 46, 45, and >200% of the MRR for glufosinate plus atrazine, and 81, 29, 18, 24, and 88% of the MRR for nicosulfuron/rimsulfuron plus dicamba/diflufenzopyr, respectively. The herbicide rate required to provide 95% of weed-free corn yield was 61, 22, 130, and 11% of the MRR for isoxaflutole plus atrazine, dimethenamid plus dicamba/atrazine, glufosinate plus atrazine, and nicosulfuron/rimsulfuron plus dicamba/diflufenzopyr, respectively. Nicosulfuron/rimsulfuron plus dicamba/diflufenzopyr had the lowest EI. The results of profitability analysis suggested that the MRR rates do not tend to maximize profit margins. In most cases, there were no significant differences in profit margins for treatments with 40, 60, 80, and 100% of the MRR. Key words: Atrazine, dicamba, diflufenzopyr, dimethenamid, glufosinate, nicosulfuron, rimsulfuron, Zea mays L.

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Weed Management in Transplanted Bell Pepper (Capsicum annuum) with Pretransplant Tank Mixes of Sulfentrazone, S-metolachlor, and Dimethenamid-p

HortScience ◽

10.21273/hortsci.43.5.1492 ◽

2008 ◽

Vol 43 (5) ◽

pp. 1492-1494 ◽

Cited By ~ 9

Author(s):

Darren E. Robinson ◽

Kristen McNaughton ◽

Nader Soltani

Keyword(s):

Weed Management ◽

Chenopodium Album ◽

Fruit Size ◽

Field Trials ◽

Amaranthus Retroflexus ◽

Ambrosia Artemisiifolia ◽

Bell Pepper ◽

Weed Species ◽

Marketable Yield ◽

Excellent Control

Pepper growers currently have limited access to many effective broadleaf herbicides. Field trials were conducted over a 3-year period in Ontario to study the effect of tank mixtures of sulfentrazone (100 or 200 g·ha−1 a.i.) with either s-metolachlor (1200 or 2400 g·ha−1 a.i.) or dimethenamid-p (750 or 1500 g·ha−1 a.i.) on transplanted bell pepper. Under weed-free conditions, there was no visual injury or reduction in plant height, fruit number, fruit size, or marketable yield of transplanted pepper with pretransplant applications of sulfentrazone applied in tank mixtures with s-metolachlor or dimethenamid-p. The tank mixture of sulfentrazone + s-metolachlor gave greater than 85% control of redroot pigweed (Amaranthus retroflexus) and eastern black nightshade (Solanum ptycanthum), but only 70% to 76% control of velvetleaf (Abutilon theophrasti), common ragweed (Ambrosia artemisiifolia), and common lambsquarters (Chenopodium album). The combination of sulfentrazone + dimethenamid-p provided good to excellent control of all weed species except velvetleaf. Based on this study, sulfentrazone and dimethenamid-p have potential for minor use registration in pepper.

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Utility of Maintained Weed Infestations Under Field Conditions

Weed Science ◽

10.1017/s0043174500079583 ◽

1970 ◽

Vol 18 (2) ◽

pp. 206-214 ◽

Cited By ~ 1

Author(s):

R. P. Upchurch ◽

F. L. Selman ◽

H. L. Webster

Keyword(s):

Chenopodium Album ◽

Amaranthus Retroflexus ◽

Ambrosia Artemisiifolia ◽

Field Conditions ◽

Moderate Degree ◽

Weed Species ◽

Common Ragweed ◽

Common Lambsquarters ◽

Dimethyl Urea ◽

Polygonum Pensylvanicum

Relatively pure stands of eight weed species were maintained under field conditions on a Goldsboro loamy sand at Lewiston, North Carolina, for all or part of a 6-year period. Herbicides evaluated as preemergence surface treatments for these species were 2-sec-butyl-4,6-dinitrophenol (dinoseb), isopropyl m-chlorocarbanilate (chloropropham), 3-(3,4-dichlorophenyl)-1,1-dimethyl-urea (diuron), 2-chloro-4,6-bis(ethylamino)-s-triazine (simazine), and 3-amino-2,5-dichlorobenzoic acid (amiben). S-ethyl dipropylthiocarbamate (EPTC) and a,a,a-trifluro-2,6-dinitro-N,N-dipropyl-p-toluidine (trifluralin) were evaluated as preemergence incorporated treatments. The first four herbicides were evaluated in 1961, 1964, and 1966 while the last three were evaluated in 1962, 1963, and 1965. A series of rates was used for each chemical with three replications. With the exception of diuron which failed to control goosegrass (Eleusine indica (L.) Gaertn.), all of the herbicides provided at least a moderate degree of control of goosegrass, smooth crabgrass (Digitaria ischaemum (Schreb.) Muhl.), and redroot pigweed (Amaranthus retroflexus L.) at the respective typical field use rates. In general, trifluralin and amiben gave the best grass control and dinoseb the poorest. None of the herbicides effectively controlled common cocklebur (Xanthium pensylvanicum Wallr.) or ivyleaf morningglory (Ipomoea hederacea (L.) Jacq.). Trifluralin and EPTC did not control Pennsylvania smartweed (Polygonum pensylvanicum L.), common ragweed (Ambrosia artemisiifolia L.), and common lambsquarters (Chenopodium album L.). Chloropropham was ineffective on common ragweed. Simazine, chloropropham, and amiben controlled Pennsylvania smartweed while diuron, simazine, dinoseb, and amiben were especially effective on common lambsquarters. Distinctive patterns of nematode infestations were observed as a function of weed species.

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Examination of commercially available bird feed for weed seed contaminants

Invasive Plant Science and Management ◽

10.1017/inp.2020.2 ◽

2020 ◽

Vol 13 (1) ◽

pp. 14-22 ◽

Cited By ~ 2

Author(s):

Eric Oseland ◽

Mandy Bish ◽

Christine Spinka ◽

Kevin Bradley

Keyword(s):

Chenopodium Album ◽

Carthamus Tinctorius ◽

Grain Sorghum ◽

Amaranthus Retroflexus ◽

Ambrosia Artemisiifolia ◽

Amaranthus Palmeri ◽

Weed Seed ◽

Weed Species ◽

Test Analysis ◽

Proso Millet

AbstractIn 2016 and 2017, 98 separate commercially available bird feed mixes were examined for the presence of weed seed. All weed seed contaminants were counted and identified by species. Amaranthus species were present in 94 of the 98 bags of bird feed. Amaranthus species present in bird feed mixes included waterhemp [Amaranthus tuberculatus (Moq.) Sauer], redroot pigweed (Amaranthus retroflexus L.), Palmer amaranth (Amaranthus palmeri S. Watson), smooth pigweed (Amaranthus hybridus L.), and tumble pigweed (Amaranthus albus L.). Amaranthus palmeri was present in 27 of the 98 mixes. Seed of common ragweed (Ambrosia artemisiifolia L.), kochia [Bassia scoparia (L.) A.J. Scott], grain sorghum [Sorghum bicolor (L.) Moench], wild buckwheat (Fallopia convolvulus L., syn: Polygonum convolvulus), common lambsquarters (Chenopodium album L.), large crabgrass [Digitaria sanguinalis (L.) Scop.], and Setaria species were also present in bird feed mixes. A greenhouse assay to determine Amaranthus species seed germinability and resistance to glyphosate revealed that approximately 19% of Amaranthus seed in bird feed mixes are readily germinable, and five mixes contained A. tuberculatus and A. palmeri seed that were resistant to glyphosate. Results from linear regression and t-test analysis indicate that when proso millet (Panicum miliaceum L.), grain sorghum, and corn (Zea mays L.) were present in feed mixes, Amaranthus seed contamination was increased. The presence of proso millet and grain sorghum also increased contamination of grass weed species, while sunflower (Helianthus annuus L.) increased A. artemisiifolia contamination and safflower (Carthamus tinctorius L.) increased contamination of Bassia scoparia.

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Kunpeszéri homokpuszta gyepen előforduló növénytársulások vizsgálata

Economica ◽

10.47282/economica/2015/8/4/2/4587 ◽

2020 ◽

Vol 8 (4/2) ◽

pp. 56-62

Author(s):

Viktor József Vojnich ◽

Ferenc Baglyas ◽

Endre Pölös

Keyword(s):

Chenopodium Album ◽

Amaranthus Retroflexus ◽

Ambrosia Artemisiifolia ◽

Conyza Canadensis ◽

Papaver Rhoeas

Vizsgálatainkat Kunpeszéren, a Kiskunsági Nemzeti Park területén végeztük. A cönológiai felvételezések 2x2 méteres kvadrátokban történtek. Megállapítottuk a társulások faji összetételét és borítottságát. A vizsgálati területen zárt pusztagyep található, javarészt Achilleo- Festucetum pseudovinae (füves szikespuszta). Antropogén hatásokra (taposás, legeltetés) a pusztagyep növényflórája degradálódott. Felszaporodtak a gyomok: parlagfű (Ambrosia artemisiifolia); kanadai betyárkóró (Conyza canadensis); pipacs (Papaver rhoeas); fehér libatop (Chenopodium album); szőrős disznóparéj (Amaranthus retroflexus), illetve a szúrós növények: tövises iglice (Ononis spinosa), mezei iringó (Eryngium campestre).

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Weed control in bean and green bean crops

Biljni lekar ◽

10.5937/biljlek2106804s ◽

2021 ◽

Vol 49 (6) ◽

pp. 804-814

Author(s):

Aleksandra Savić ◽

Sanja Đurović ◽

Srđan Stevanović ◽

Milan Ugrinović

Keyword(s):

Weed Control ◽

Chenopodium Album ◽

Datura Stramonium ◽

Amaranthus Retroflexus ◽

Ambrosia Artemisiifolia ◽

Xanthium Strumarium ◽

Green Beans ◽

Important Place ◽

Growing Conditions ◽

High Yields

Phaseolus vulgaris (beans; green beans) as a food of high nutritional value occupies an important place in the human diet. In addition to all the basic growing conditions, one of the key requirements for achieving high yields is successful weed control. Weeds such as Amaranthus retroflexus, Chenopodium album, Datura stramonium, Abutilon theophrasti, Xanthium strumarium, Cirsium arvense, Ambrosia artemisiifolia, Sorghum halepense and others appear as the most dominant species in our agroecological conditions. The application of the concept of integrated weed control implies the application of all available measures (crop rotation, proper and timely tillage, application of herbicides, etc.). Although there is a wider range of registered herbicides for weed control in beans and green beans in the world, preparations based on active substances: clethodim, quizalofop-P-tefuril, imazamox and bentazone have been registered in Serbia.

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STUDY OF WEED FLORA OF MAIZE CROPS IN THE NISAVA DISTRICT

Applied Researches in Technics Technologies and Education ◽

10.15547/artte.2018.04.009 ◽

2018 ◽

Vol 6 (4) ◽

pp. 340-345

Author(s):

Jelica Živić ◽

Milić Vojinović ◽

Ivica Stančić ◽

Saša Petrović

Keyword(s):

Chenopodium Album ◽

Datura Stramonium ◽

Amaranthus Retroflexus ◽

Ambrosia Artemisiifolia ◽

Weed Species ◽

Convolvulus Arvensis ◽

Maize Crop ◽

Time Of Application ◽

Cultivated Plant ◽

The Right

The damage from the present weeds in maize crop is shown by the reduction of yield in almost every year and their suppression is completely economically justified. The right selection of herbicides mostly depends on the presence of dominant weed species and the time of application. The paper presents the distribution and existence of economically harmful, invasive and quarantine weed species (Abutilon theophrasti, Agropyrum repens, Amaranthus retroflexus, Ambrosia artemisiifolia, Capsela bursa-pastoris, Chenopodium album, Chenopodium hybridum, Cirsium arvense, Convolvulus arvensis, Datura stramonium, Avena fatua, Calystegia sepium, …) on ten locations of maize crops in the Nisava district. Estimation of the species presence was done in two shootings (May and August) on scale 1-4 (1 - species appears individually and occupy up to 5% of the surface, 2 - appears and occupies 5-25% of the surface, 3 - appears often and occupies 25-50% of the surface, 4 - the species prevails over the cultivated plant and occupies over 50% of the surface).

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Dependence of soybean weed infestation on growing conditions in the Eastern Forest-Steppe of Ukraine

Karantin i zahist roslin ◽

10.36495/2312-0614.2021.2.36-41 ◽

2021 ◽

pp. 36-41

Author(s):

R. Hutianskyi ◽

S. Popov ◽

V. Zuza ◽

N. Kuzmenko

Keyword(s):

Species Composition ◽

Crop Rotation ◽

Field Experiments ◽

Dominant Role ◽

Chenopodium Album ◽

Amaranthus Retroflexus ◽

Ambrosia Artemisiifolia ◽

Xanthium Strumarium ◽

Forest Steppe ◽

Setaria Glauca

Goal. To establish the species composition of weeds, their dominant role and determine the type and level of weediness of soybean crops for cultivation in a fixed nine-course stationary, fallow-crop-row rotation and in monoculture in the eastern part of the Forest-Steppe of Ukraine. Methods. The research was conducted by route surveys in field experiments. Results. According to the research of 2011—2017, 30 species of weeds and contaminants were found in soybean crops after winter wheat as forecrop in the stationary crop rotation (spring early and late were 60%, winter and biennial were 17%, perennial were 23%), and 18 species (spring early and late were 72%, wintering and biennial were 6%, perennial were 22%) were found for cultivation in monoculture. They belonged to 16 families, the families Asteraceae (9 species), Poaceae (5 species) and Polygonaceae (5 species) were the most represented. The main weeds in soybean crops in crop rotation and monoculture were Echinochloa crus-galli (L.) Roem. et Schult., Chenopodium album L., Cirsium arvense (L.) Scop. and Panicum miliaceum L. In addition to these weeds for growing soybeans in crop rotation were present Setaria glauca (L.) Beauv., Amaranthus retroflexus L., Solanum nigrum L., Polygonum lapathifolium L., Sonchus arvensis L., Convolvulus arvensis L., and in monoculture were Ambrosia artemisiifolia L. and Xanthium strumarium L. Xanthium strumarium L. was the most dominant in the monoculture (43%), and Setaria glauca (L.) Beauv was subdominant in crop rotation (57%), and Echinochloa crus-galli (L.) Roem. and Schult. was subdominant in monoculture (57%). Six complex types of weeds were formed in soybean crops, cereal-dicotyledonous-dicotyledonous-root-sprouting and dicotyledonous-grass-annual-grass-root-sprouting prevailed. For cultivation in crop rotation cereal annual species predominated, and dicotyledonous annuals predominated in monoculture. At the same time, the monoculture had a higher level of weeding than crop rotation, or it was equivalent. Conclusions. The species composition of weeds in soybean crops in fallow-crop-row rotation and monoculture differs significantly, which should be taken into account by the agronomic service of farms when developing methods of their control.

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Weed control andZea maystolerance as affected by timing of RP-201772 application

Weed Science ◽

10.1017/s0043174500091955 ◽

1999 ◽

Vol 47 (4) ◽

pp. 375-382 ◽

Cited By ~ 6

Author(s):

Christy L. Sprague ◽

Donald Penner ◽

James J. Kells

Keyword(s):

Zea Mays ◽

Chenopodium Album ◽

Field Studies ◽

Amaranthus Retroflexus ◽

Ambrosia Artemisiifolia ◽

Abutilon Theophrasti ◽

Physiological Basis ◽

Setaria Faberi ◽

Spray Solution ◽

Herbicide Treatments

Field studies were conducted in 1996 and 1997 to determine the effects of RP-201772 and RP-201772 tank mixtures applied to emergedZea mays.RP-201772 at 105 g ha−1and tank-mixed metolachlor/benoxacor or atrazine were applied preemergence and to spike, 2-leaf, and 4-leafZ. mays.Herbicide treatments over the four application timings provided greater than 90%Chenopodium album, Ambrosia artemisiifolia, Amaranthus retroflexus, andAbutilon theophrasticontrol. However,Setaria fabericontrol varied among years and application timings. SevereZ. maysinjury, 70% and 40%, was observed when RP-201772 tank-mixed with metolachlor/benoxacor was applied to 2-leaf and 4-leafZ. mays, respectively. Greenhouse studies confirmedZ. mayssensitivity from delayed applications of RP-201772 tank-mixed with metolachlor/benoxacor. Similarly, increasedZ. maysinjury was observed from postemergence applications of RP-201772 tank-mixed with acetochlor/MON-13900. Herbicide absorption, translocation, metabolism, and retention studies were conducted to determine the physiological basis for the observedZ. maysinjury from delayed applications of the RP-201772 tank mixture with metolachlor/benoxacor. Metolachlor/benoxacor increased radiolabeled RP-201772 absorption when applied to spike, 2-leaf, and 4-leafZ. mays.RP-201772 translocation and metabolism did not explain enhancedZ. maysinjury. However, RP-201772 retention increased fivefold when metolachlor/benoxacor was present in the spray solution and applied to 2-leaf and 4-leafZ. mays.Increased RP-201772 absorption and retention appeared to be the basis forZ. maysinjury when tank-mixed with metolachlor/benoxacor and applied to emergedZ. mays.

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