Management of Blackgrass (<i>Alopecurus myosuroides</i>) in Winter Wheat in Greece

Vizantinopoulos, S.; Katranis, N.

doi:10.1017/s0890037x00044195

Cited by 11 publications

(6 citation statements)

References 6 publications

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“…], which are now among the most common weeds across large areas of Europe (Aamisepp and Avholm 1970;Andreasen and Stryhn 2008;Melander et al 2008;Naylor 1972). Both species are highly competitive weeds that can cause substantial yield reduction in winter wheat (Triticum aestivum L.) crops (Vizantinopoulos and Katranis 1998). In England, the economic threshold level for A. myosuroides was found to be only 12 plants m −2 (Moss 2013), while a density of 10 plants m −2 of A. spica-venti can lower grain yield in winter wheat by 17% in Denmark (Melander 1995).…”

Section: Introductionmentioning

confidence: 99%

Seed production and retention at maturity of blackgrass (Alopecurus myosuroides) and silky windgrass (Apera spica-venti) at wheat harvest

Bitarafan

Andreasen

2020

Weed Sci

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Blackgrass (Alopecurus myosuroides Huds.) and silky windgrass [Apera spica-venti (L.) P. Beauv.] are becoming a significant problem in Europe. Due to the development of herbicide-resistant biotypes and unwanted side effects of herbicides, there is a need for new integrated weed management strategies to control weeds. Therefore, reducing weed infestations by targeting seed production during crop harvest should be considered. In 2017 and 2018, we estimated the fraction of the total seed production of A. myosuroides and A. spica-venti in a field that potentially could be collected by a grain harvester during winter wheat (Triticum aestivum L.) harvest. Twenty plants of each species were surrounded by a porous net before flowering to trap shed seeds during reproductive development. Seeds were collected and counted weekly up until and immediately before wheat harvest, and the ratio of harvestable seeds to shed seeds during the growing season was determined. Alopecurus myosuroides produced on average 953 seeds plant−1 in 2017 and 3,337 seeds plant−1 in 2018. In 2017 and 2018, 29% and 37% of the total A. myosuroides seeds produced, respectively, were retained on plants at maturity. Apera spica-venti produced on average 1,192 seeds plant−1 in 2017 and 5,678 seeds plant−1 in 2018, and retained 53% and 16% of the seeds at harvest, respectively. If a grain harvester potentially collected approximately 30% of the total seed production of the two grass weeds and removed or killed them, it would reduce seed input to the soil seedbank. However, such methods cannot stand alone to reduce weed pressure.

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Section: Introductionmentioning

confidence: 99%

Seed production and retention at maturity of blackgrass (Alopecurus myosuroides) and silky windgrass (Apera spica-venti) at wheat harvest

Bitarafan

Andreasen

2020

Weed Sci

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“…It germinates predominantly in autumn but can also germinate in spring (Andersson & Åkerblom Espeby, 2009). A. myosuroides has a high potential to reduce the yield of winter wheat and other winter crops (Vizantinopoulos & Katranis, 1998). A density of 100 A. myosuroides plants m −2 can reduce winter wheat yield by up to 50% (Blair et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of different weed management strategies including non‐chemical tools and cinmethylin for control of multiple herbicide‐resistant Alopecurus myosuroides

Klauk

Petersen

2023

Weed Research

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The development of resistance in Alopecurus myosuroides populations to different herbicide active ingredients in Europe exacerbates efforts toward its chemical control. In Europe, cinmethylin provides an additional mode of action for the control of A. myosuroides. The objective of this study was to evaluate three resistance weed management (RWM) strategies, including cinmethylin and other pre‐emergence herbicides, for the control of multiple herbicide–resistant A. myosuroides. The RWM strategies used in this study differed in the extent of preventive cultural practices (tillage, crop rotation, sowing date and stale seedbed). Two field trials were conducted at sites with ACCase‐ and ALS‐resistant A. myosuroides biotypes in Germany between 2017 and 2020. Cinmethylin was included in the herbicide regime for A. myosuroides control. The combination of initial inversion tillage, delayed sowing, crop rotation diversification, and stale seedbed reduced the density of A. myosuroides bup to 90% compared to a strategy with pre‐emergence herbicides used as main components in control. At both sites, the amount of viable A. myosuroides seeds in the soil seed bank was reduced by over 90% after a 3‐year trial period in plots with initial inversion tillage. Molecular analyses revealed that the omission of ACCase and ALS inhibitors did not reduce the proportion of resistant A. myosuroides biotypes. Long‐term control of resistant A. myosuroides must be based on a combination of cultural practices that reduce the soil seed bank and suppress the occurrence of A. myosuroides and the use of still‐effective active ingredients for preventing the renewed entry of seeds into the soil.

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“…It is widespread in regions with climates influenced by the Atlantic [ 2 ], but it is also locally found in other north-western European countries on wet loam and clay soils [ 3 ]. Black-grass is a highly competitive species that causes significant yield losses in winter cereals [ 4 ]. It has been found that the economic threshold for A. myosuroides is 5.5 to 15 plants per m 2 [ 5 , 6 , 7 ], and in most cases, more than 10 plants per m 2 will cause significant yields losses [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Growth Stage of Alopecurus myosuroides Huds. Determines the Efficacy of Pinoxaden

Pintar

Svečnjak

Šoštarčić

et al. 2021

Plants

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Alopecurus myosuroides Huds. is an important pinoxaden-resistant grass weed in many countries of Europe. Recently, the low efficacy of pinoxaden was reported in winter cereals in Croatia, but a preliminary dose–response trial showed no herbicide resistance for the investigated weed population. Therefore, a two-year experiment was conducted under greenhouse conditions to determine the efficacy of various pinoxaden doses (20, 40 and 80 g a.i. ha−1) on weed visual injuries and biomass reduction after herbicide application at different growth stages. As expected, the maximum weed biomass reduction (97.3%) was achieved by applying the highest dose (80 g a.i. ha−1) at the earliest growth stage (ZCK 12–14). A pinoxaden dose of 20 g a.i. ha−1 resulted in satisfactory weed biomass reduction (88.9%) only when applied at ZCK 12–14. The recommended dose (40 g a.i. ha−1) also provided sufficient weed control up to the growth stage ZCK 21–25. Slightly delayed (ZCK 31–32) application of the recommended dose brought about a low weed biomass reduction (60.1%). Double than the recommended dose also failed to provide satisfactory weed control at the advanced weed growth stages (ZCK 31–32 and ZCK 37–39). Thus, reported low efficacy of pinoxaden is most likely because of delayed herbicide application when A. myosuroides is overgrown.

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Management of Blackgrass (Alopecurus myosuroides) in Winter Wheat in Greece

Cited by 11 publications

References 6 publications

Seed production and retention at maturity of blackgrass (Alopecurus myosuroides) and silky windgrass (Apera spica-venti) at wheat harvest

Seed production and retention at maturity of blackgrass (Alopecurus myosuroides) and silky windgrass (Apera spica-venti) at wheat harvest

Evaluation of different weed management strategies including non‐chemical tools and cinmethylin for control of multiple herbicide‐resistant Alopecurus myosuroides

Growth Stage of Alopecurus myosuroides Huds. Determines the Efficacy of Pinoxaden

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