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1. Effects of different management practices on Portulaca oleracea emergence in soyabean

Author:
Khakzad, R; Alebrahim, M T; Tobeh, A; Oveisi, M; Valiolahpor, R; Tseng, T M
Source:
Weed research 2019 v.59 no.4 pp. 279-287
ISSN:
0043-1737
Subject:
annual weeds,   etc   ; Portulaca oleracea; conventional tillage; crops; field experimentation; geographical distribution; imazethapyr; integrated weed management; no-tillage; seedlings; seeds; sowing; soybeans; summer;     Show all 14 Subjects
Abstract:
... Portulaca oleracea (common purslane) is a summer annual weed with wide geographic distribution and is problematic in many crops worldwide. Field experiments were conducted to determine the effects of different management practices on P. oleracea emergence in soyabean fields. Two tillage systems [conventional tillage (CT) and no‐till (NT)], three soyabean seeding rates (SR) (200 000, 300 000 and 40 ...
DOI:
10.1111/wre.12364

2. Impact of Indian mustard growth and incorporation on annual weed population dynamics and communities

Author:
Lefebvre, M; Leblanc, M L; Watson, A K
Source:
Weed research 2019 v.59 no.4 pp. 324-338
ISSN:
0043-1737
Subject:
annual weeds,   etc   ; Brassica juncea; autumn; biofumigation; biomass; cover crops; isothiocyanates; mowing; oats; plant density; plant tissues; population dynamics; spring; weed control; Quebec;     Show all 15 Subjects
Abstract:
... Biofumigation from Brassica cover crops may be used to control soilborne pests and weeds. A study was conducted to understand the influence of biofumigation on key processes of annual weed population dynamics. Five combinations of Indian mustard (M) and oat (O) cover crop treatments were assessed in a 3 year field study at two locations in Québec, Canada. Treatments included four spring/fall cover ...
DOI:
10.1111/wre.12369

3. A Trp-574-Leu mutation in the acetolactate synthase (ALS) gene of Lithospermum arvense L. confers broad-spectrum resistance to ALS inhibitors

Author:
Wang, Qian; Ge, Lu'an; Zhao, Ning; Zhang, Lele; You, Ludan; Wang, Dandan; Liu, Weitang; Wang, Jinxin
Source:
Pesticide biochemistry and physiology 2019 v.158 pp. 12-17
ISSN:
0048-3575
Subject:
annual weeds,   etc   ; Lithospermum; acetolactate synthase; amino acids; at-risk population; bioassays; florasulam; genes; imazethapyr; mechanism of action; mutation; pyrithiobac; sequence analysis; sodium; wheat; winter; China;     Show all 17 Subjects
Abstract:
... Lithospermum arvense is a troublesome dicotyledonous winter annual weed of wheat in China. A L. arvense population (HN01) suspected of being resistant to acetolactate synthase (ALS) inhibitors was found in Henan Province, China. This study aimed to testify the sensitivity of this HN01 population to eight herbicides from 3 different modes of action, and to explore the potential target-site-resistan ...
DOI:
10.1016/j.pestbp.2019.04.001

4. Establishment of forage kochia in seeding mixtures with perennial grasses

Author:
Aryal, Parmeshwor; Islam, M. Anowarul
Source:
Grassland science 2019 v.65 no.3 pp. 147-154
ISSN:
1744-6961
Subject:
annual weeds,   etc   ; Bassia prostrata; autumn; cool season grasses; environmental factors; forage; forage production; indigenous species; monitoring; perennials; plant density; planting date; sowing; spring; summer; winter; Wyoming;     Show all 17 Subjects
Abstract:
... Forage kochia (Bassia prostrata L.) can persist in disturbed areas and provide high‐quality forage even during fall and winter months. However, information is needed on the effect of planting time and subsequent environmental conditions on forage kochia establishment. A field study was initiated in 2014 in Wyoming to determine the optimum planting time for successful forage kochia establishment an ...
DOI:
10.1111/grs.12228

5. A functional diversity approach of crop sequences reveals that weed diversity and abundance show different responses to environmental variability

Author:
Mahaut, Lucie; Gaba, Sabrina; Fried, Guillaume
Source:
Journal of applied ecology 2019 v.56 no.6 pp. 1400-1409
ISSN:
0021-8901
Subject:
annual weeds,   etc   ; crop rotation; cropping sequence; crops; databases; environmental factors; farmers; functional diversity; herbicides; monitoring; sequence diversity; sowing date; tillage; weed control; winter;     Show all 15 Subjects
Abstract:
... Combining several crop species and associated agricultural practices in a crop sequence has the potential to control weed abundance while promoting weed diversity in arable fields. However, how the variability in environmental conditions that arise from crop sequences affects weed diversity and abundance remains poorly understood, with most studies to‐date simply opposing weed communities in monoc ...
DOI:
10.1111/1365-2664.13389

6. The response of weed and crop species to shading: Which parameters explain weed impacts on crop production?

Author:
Colbach, Nathalie; Gardarin, Antoine; Moreau, Delphine
Source:
Field crops research 2019 v.238 pp. 45-55
ISSN:
0378-4290
Subject:
annual weeds,   etc   ; analysis of variance; canopy; crop rotation; crop yield; crops; herbicides; leaf area; leaves; phytomass; plant height; plant morphology; principal component analysis; shade; simulation models; tillage;     Show all 16 Subjects
Abstract:
... Crops compete with weeds for light, and choosing competitive crop species contributes to managing weeds. The objective was to identify which crop and weed parameters related to competition for light drive weed harmfulness for crop production. In a previous experiment, we measured parameters to characterize species potential plant morphology in unshaded conditions and species response to shading fo ...
DOI:
10.1016/j.fcr.2019.04.008

7. Preplant and Residual Herbicide Application Timings for Weed Control in No-Till Soybean

Author:
Vollmer, Kurt M.; VanGessel, Mark J.; Johnson, Quintin R.; Scott, Barbara A.
Source:
Weed technology 2019 v.33 no.1 pp. 166-172
ISSN:
1550-2740
Subject:
annual weeds,   etc   ; Amaranthus palmeri; Digitaria sanguinalis; Glycine max; application timing; chlorimuron; metribuzin; no-tillage; pesticide application; planting; seasonal growth; soybeans; spring; summer; weed control; winter;     Show all 16 Subjects
Abstract:
... Timely herbicide applications for no-till soybean can be challenging given the diverse communities of both winter and summer annual weeds that are often present. Research was conducted to compare various approaches for nonselective and preplant weed control for notill soybean. Nonselective herbicide application timings of fall (with and without a residual herbicide) followed by early-spring (4 wk ...
DOI:
10.1017/wet.2018.105

8. Effect of irrigation and soil adjuvant on the efficacy and selectivity of pendimethalin and metazachlor in kohlrabi

Author:
Jursík, M.; Šuk, J.; Kolářová, M.; Soukup, J.
Source:
Scientia horticulturae 2019 v.246 pp. 871-878
ISSN:
0304-4238
Subject:
annual weeds,   etc   ; Chenopodium album; Mercurialis annua; Solanum physalifolium; aboveground biomass; adjuvants; crop yield; herbicide mixtures; irrigation; kohlrabi; metazachlor; pendimethalin; pesticide application; phytotoxicity; soil; tubers; Czech Republic;     Show all 17 Subjects
Abstract:
... Precipitation and irrigation strongly affect herbicide management of vegetables, especial fast- growing vegetables as a kohlrabi. The objective of this study was to compare the effects of irrigation and paraffin oil-based soil adjuvant on the efficacy and selectivity of pendimethalin and metazachlor herbicides and their tank-mix combination in kohlrabi. Small plot experiments were carried out in P ...
DOI:
10.1016/j.scienta.2018.11.062

9. Weeds flora demographic analysis of date palm orchards in El-Bahariya, El-Frafra and Siwa oases

Author:
Balah, Mohamed Abdel Aziz
Source:
Acta ecologica Sinica 2019 v.39 no.1 pp. 14-20
ISSN:
1872-2032
Subject:
annual weeds,   etc   ; Phoenix dactylifera; Poaceae; demography; ecosystems; flora; fruits; invasive species; oases; orchards; parasitic plants; perennial weeds; perennials; photosynthesis; population dynamics; soil properties; surveys; trees;     Show all 18 Subjects
Abstract:
... Oases are a specific ecosystems which date palm Phoenix dactylifera are the mainly crop growing for its fruits and others tree parts. Palm orchards are infested by many pests, including weeds species and exposed within time to the challenging invasive weeds to control. The heavy incidence of weeds negatively affects palm productivity, especially in small plantation and divergent distances, while t ...
DOI:
10.1016/j.chnaes.2018.07.002

10. First record of parasitoids associated with insects inhabiting capsules of Papaver rhoeas in Greece

Author:
Karamaouna, F.; Samara, M.; Kati, V.; Mitroiu, M.-D.
Source:
Hellenic Plant Protection Journal 2018 v.11 no.2 pp. 54-58
ISSN:
1791-3691
Subject:
annual weeds,   etc   ; Aprostocetus; Cynipidae; Diptera; Idiomacromerus; Papaver rhoeas; Pteromalidae; insects; parasitism; parasitoids; plant protection; Greece;     Show all 12 Subjects
Abstract:
... A faunistic complex of chalcidoid parasitoids (Hymenoptera: Chalcidoidea) associated with cynipids and cecidomyids (Hymenoptera: Cynipidae; Diptera: Cecydomyiidae) inhabiting capsules of the annual weed Papaver rhoeas L. (corn poppy) was recorded in Amynteo, Northern Greece (2012) and Orchomenos, Voeotia, Central Greece (2013). The parasitoids are Idiomacromerus papaveris (Forster, 1856), Idiomacr ...
DOI:
10.2478/hppj-2018-0007

11. Control of glyphosate-resistant Canada fleabane in Ontario with multiple effective modes-of-action in glyphosate/dicamba-resistant soybean

Author:
Hedges, Brittany K.; Soltani, Nader; Robinson, Darren E.; Hooker, David C.; Sikkema, Peter H.
Source:
Canadian journal of plant science 2018 v.99 no.1 pp. 78-83
ISSN:
1918-1833
Subject:
annual weeds,   etc   ; biomass; carbon; dicamba; glyphosate; glyphosate resistance; growing season; imazethapyr; paraquat; saflufenacil; selection pressure; soybeans; summer; winter; Ontario;     Show all 15 Subjects
Abstract:
... Canada fleabane is a winter or summer annual weed that is found throughout North America. Fall-emerged Canada fleabane can fix carbon early in the growing season, giving it a competitive advantage over nearby crop and weed species. Glyphosate-resistant (GR) Canada fleabane was originally found in one county in Ontario, Canada, in 2010 and had spread to at least 29 additional counties within the pr ...
DOI:
10.1139/cjps-2018-0067

12. EPSPS duplication and mutation involved in glyphosate resistance in the allotetraploid weed species Poa annua L.

Author:
Brunharo, Caio Augusto De Castro Grossi; Morran, Sarah; Martin, Katie; Moretti, Marcelo L; Hanson, Bradley D
Source:
Pest management science 2019 v.75 no.6 pp. 1663-1670
ISSN:
1526-498X
Subject:
annual weeds,   etc   ; 3-phosphoshikimate 1-carboxyvinyltransferase; Poa annua; absorption; alleles; allotetraploidy; almonds; diagnostic techniques; dose response; glyphosate; glyphosate resistance; growers; growth retardation; leucine; metabolism; monitoring; orchards; phenotype; proline; single nucleotide polymorphism; site-directed mutagenesis; winter; California;     Show all 23 Subjects
Abstract:
... BACKGROUND: Poa annua is a widespread winter annual weed species in California. Recently, poor control of this species with glyphosate was reported by growers in an almond orchard in California with a history of repetitive glyphosate use. The objectives of this research were to evaluate the level of glyphosate resistance in a developed S₄ P. annua line (R) and identify the mechanisms of resistance ...
DOI:
10.1002/ps.5284

13. The chemistry and biological activities of Peperomia pellucida (Piperaceae): A critical review

Author:
Alves, Nayara Sabrina F.; Setzer, William N.; da Silva, Joyce Kelly R.
Source:
Journal of ethnopharmacology 2019 v.232 pp. 90-102
ISSN:
0378-8741
Subject:
annual weeds,   etc   ; Internet; Neotropics; Peperomia; abscess; active ingredients; antioxidants; bioassays; conjunctivitis; cytotoxicity; databases; essential oils; kidneys; measles; medicinal properties; pain; phytopharmaceuticals; screening; solar radiation; surveys; traditional medicine; Africa; Australia; South East Asia;     Show all 24 Subjects
Abstract:
... Peperomia pellucida (L.) Kunth is an annual weed with a preference to humid places with reduced solar radiation. This plant is mainly distributed in the Neotropics, Africa, Southeast Asia, and Australia. It is popularly employed in the treatment of a variety of health conditions such as abscesses, abdominal pain, skin sores, conjunctivitis, measles, and kidney troubles. Several studies have also d ...
DOI:
10.1016/j.jep.2018.12.021

14. Reproductive allometry in four annual weeds

Author:
Guglielmini, A. C.; Verdú, A. M. C.; Satorre, E. H.
Source:
Australian journal of botany 2019 v.67 no.2 pp. 99-105
ISSN:
0067-1924
Subject:
annual weeds,   etc   ; Amaranthus hybridus; Chenopodium album; Digitaria sanguinalis; Setaria verticillata; allometry; cropping systems; greenhouse production; interspecific competition; models; phytomass; plant growth; regression analysis; reproductive performance; seed set; seeds; soybeans; weed control;     Show all 18 Subjects
Abstract:
... Differences in plant biomass/plant seed production relationship imply that plants suppressed by competition to the same extent, may not suffer the same reduction in seed number setting. This size-dependent process evidenced by the quantitative relationship between plant growth and allocation to reproductive structures can be considered from an allometric perspective. The aim of this study was to d ...
DOI:
10.1071/BT18087

15. Cereal rye cover crop suppresses winter annual weeds

Author:
Werle, Rodrigo; Burr, Charles; Blanco-Canqui, Humberto
Source:
Canadian journal of plant science 2017 v.98 no.2 pp. 498-500
ISSN:
1918-1833
Subject:
annual weeds,   etc   ; biomass; corn; cover crops; crop production; integrated weed management; rye; spring; winter; North America;     Show all 10 Subjects
Abstract:
... Cover crop (CC) adoption has increased in North America corn and soybean production areas. The objective was to evaluate the impact of cereal rye CC on winter annual weeds. Cereal rye reduced winter annual weed density and biomass by >90% at time of spring termination, showing potential as a component of an integrated weed management program. ...
DOI:
10.1139/cjps-2017-0267

16. Improving soil seed bank management

Author:
Haring, Steven C; Flessner, Michael L
Source:
Pest management science 2018 v.74 no.11 pp. 2412-2418
ISSN:
1526-498X
Subject:
annual weeds,   etc   ; DNA fingerprinting; agroecosystems; applied ecology; buried seeds; crop rotation; genes; growers; habitats; integrated weed management; lidar; pest management; phenology; tillage; weed biology;     Show all 15 Subjects
Abstract:
... Problems associated with simplified weed management motivate efforts for diversification. Integrated weed management uses the fundamentals of weed biology and applied ecology to provide a framework for diversified weed management programs; the soil seed bank comprises a necessary part of this framework. By targeting seeds, growers can inhibit the propagule pressure on which annual weeds depend for ...
DOI:
10.1002/ps.5068

17. Evaluating the Effectiveness of Low Soil-Disturbance Treatments for Improving Native Plant Establishment in Stable Crested Wheatgrass Stands

Author:
Morris, Christo; Morris, Lesley R.; Monaco, Thomas A.
Source:
Rangeland ecology & management 2018
ISSN:
1550-7424
Subject:
annual weeds,   etc   ; Agropyron cristatum; Agropyron desertorum; annuals; basins; herbicides; indigenous species; introduced plants; land use; pesticide application; plant establishment; sowing; species diversity; vegetation;     Show all 14 Subjects
Abstract:
... Past seedings of crested wheatgrass (Agropyron cristatum [L.] Gaertn. and A. desertorum [Fisch. ex Link] Schult.) have the potential to persist as stable, near-monospecific stands, thereby necessitating active intervention to initiate greater species diversity and structural complexity of vegetation. However, the success of suppression treatments and native species seedings is limited by rapid rec ...
DOI:
10.1016/j.rama.2018.10.009

18. A general method for estimating seed dormancy and colonisation in annual plants from the observation of existing flora

Author:
Pluntz, Matthieu; Coz, Sebastian Le; Peyrard, Nathalie; Pradel, Roger; Choquet, Rémi; Cheptou, Pierre‐Olivier
Source:
Ecology letters 2018 v.21 no.9 pp. 1311-1318
ISSN:
1461-023X
Subject:
annual weeds,   etc   ; Markov chain; annuals; environmental knowledge; extinction; flora; germination; life history; models; plant ecology; seed dormancy; surveys; weed control; France;     Show all 14 Subjects
Abstract:
... In plant ecology, characterising colonisation and extinction in plant metapopulations is challenging due to the non‐detectable seed bank that allows plants to emerge after several years of absence. In this study, we used a Hidden Markov Model to characterise seed dormancy, colonisation and germination solely from the presence–absence of standing flora. Applying the model to data from a long‐term s ...
DOI:
10.1111/ele.13097

19. Herbivore- and MeJA-induced volatile emissions from the redroot pigweed Amaranthus retroflexus Linnaeus: their roles in attracting Microplitis mediator (Haliday) parasitoids

Author:
Yu, Huilin; Zhang, Yongjun; Li, Yunhe; Lu, Ziyun; Li, Xiangju
Source:
Arthropod-plant interactions 2018 v.12 no.4 pp. 575-589
ISSN:
1872-8855
Subject:
annual weeds,   etc   ; Amaranthus retroflexus; Helicoverpa armigera; Microplitis mediator; attractants; electrophysiology; emissions; females; foraging; gas chromatography-mass spectrometry; host plants; methyl jasmonate; odors; parasitoids;     Show all 14 Subjects
Abstract:
... The redroot pigweed Amaranthus retroflexus Linnaeus (Caryophyllales: Amaranthaceae), an annual weed, is a host plant of the cotton bollworm Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae). Microplitis mediator (Haliday) (Hymenoptera: Braconidae) is a parasitoid of H. armigera. Here, the electrophysiological and behavioral responses of M. mediator to induced redroot pigweed volatiles were in ...
DOI:
10.1007/s11829-018-9606-0

20. Detection of the Trp-2027-Cys Mutation in Fluazifop-P-Butyl–Resistant Itchgrass (Rottboellia cochinchinensis) Using High-Resolution Melting Analysis (HRMA)

Author:
Barrantes-Santamaría, Walter; Castillo-Matamoros, Rolbin; Herrera-Murillo, Franklin; Brenes-Angulo, Arturo; Gómez-Alpízar, Luis
Source:
Weed science 2018 v.66 no.3 pp. 286-292
ISSN:
0043-1745
Subject:
annual weeds,   etc   ; Rottboellia cochinchinensis; acetyl-CoA carboxylase; crops; fluazifop-P; herbicide resistance; melting; monitoring; mutants; single nucleotide polymorphism; site-directed mutagenesis; subtropics;     Show all 12 Subjects
Abstract:
... Itchgrass [Rottboellia cochinchinensis (Lour.) Clayton] is recognized as one of the most noxious and troublesome annual weeds in tropical and subtropical regions. Acetyl-coenzyme A carboxylase (ACCase)-inhibiting herbicides have been frequently used for managing R. cochinchinensis POST in a variety of crops, resulting in evolved resistance to these herbicides. Recently, resistance to fluazifop-P-b ...