Weed dispersal by farming at various spatial scales. A review

Petit, Sandrine; Alignier, Audrey; Colbach, Nathalie; Joannon, Alexandre; Cœur, Didier Le; Thenail, Claudine

doi:10.1007/s13593-012-0095-8

Cited by 55 publications

(35 citation statements)

References 114 publications

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“…Amaranthus tuberculatus is a dioecious summer annual with continuous germination, high seed output, and a persistent soil seed bank . Like other similar species, obligate outcrossing weeds such as A. tuberculatus are highly mobile via seeds and pollen, allowing herbicide‐resistance traits to move easily between farms …”

Section: Methodsmentioning

confidence: 99%

Confronting herbicide resistance with cooperative management

Evans

Williams

Hager

et al. 2018

Pest Management Science

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BACKGROUNDResistance of pathogens and pests to antibiotics and pesticides worldwide is rapidly reaching critical levels. The common‐pool‐resource nature of this problem (i.e. whereby the susceptibility to treatment of target organisms is a shared resource) has been largely overlooked. Using herbicide‐resistant weeds as a model system, we developed a discrete‐time landscape‐scale simulation to investigate how aggregating herbicide management strategies at different spatial scales from individual farms to larger cooperative structures affects the evolution of glyphosate resistance in common waterhemp (Amaranthus tuberculatus).RESULTSOur findings indicate that high‐efficacy herbicide management strategies practiced at the farm scale are insufficient to slow resistance evolution in A. tuberculatus. When best practices were aggregated at large spatial scales, resistance evolution was hindered; conversely, when poor management practices were aggregated, resistance was exacerbated. Tank mixture‐based strategies were more effective than rotation‐based strategies in most circumstances, while applying glyphosate alone resulted in the poorest outcomes.CONCLUSIONSOur findings highlight the importance of landscape‐scale cooperative management for confronting common‐pool‐resource resistance problems in weeds and other analogous systems. © 2018 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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Section: Methodsmentioning

confidence: 99%

Confronting herbicide resistance with cooperative management

Evans

Williams

Hager

et al. 2018

Pest Management Science

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“…Previous research has evaluated the role that biotic and abiotic constraints, as well as landscape factors, play in determining the assembly trajectories of weed populations and communities [76,77]. Yet, the importance of eco-evolutionary processes in determining weed community dynamics is usually not considered.…”

Section: Eco-evolutionary Thinking and Weed Managementmentioning

confidence: 99%

“…Traditionally, weed management decisions are made at the individual field level. Yet, propagule dispersal can be highly influenced by the interactions between fields, farms, and landscape-scale spatial complexity [77]. While few examples exist where local networks help famers coordinate actions to manage pests [84], management strategies, community outreach, and regulatory oversight should emphasize the need for landscape-level coordination of weed management.…”

Section: Concepts Actionsmentioning

confidence: 99%

The Eco-Evolutionary Imperative: Revisiting Weed Management in the Midst of an Herbicide Resistance Crisis

et al. 2016

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Abstract:Modern weed science is at a crossroads. Born out of advances in chemistry, it has focused on minimizing weed competition with genetically uniform crops and heavy reliance on herbicides. Paradoxically, the success obtained with such an approach and the reluctance to conduct integrated and multidisciplinary research has resulted in unintended, but predictable, consequences, including the selection of herbicide resistant biotypes. Advances in eco-evolutionary biology, a relatively recent discipline that seeks to understand how local population dynamics arise from phenotypic variation resulting from natural selection, habitat distribution, and propagule dispersal across the landscape are transforming our understanding of the processes that regulate agroecosystems. Within this framework, complementary tactics to develop alternative weed management programs include the following: (1) weed scientists must recognize that evolution occurs within crop fields at ecologically-relevant time scales and is rooted in the inherent variation that exists in all populations; (2) weed management should recognize that the probability of a resistant mutant is directly related to the population size; (3) farmers need to acknowledge that herbicide resistance transcends any one farm and should coordinate local practices with regional actions; (4) incentives should be developed and implemented to help the adoption of eco-evolutionary management programs; and (5) risk analysis can help incorporate an eco-evolutionary perspective into integrated weed management programs.

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“…The arable weed vegetation is increasingly regarded and investigated in a landscape context (Petit et al 2013;Gaba et al 2010). We here distinguish between 'large-scale' and 'landscape' studies.…”

Section: Introductionmentioning

confidence: 99%

Methods to conduct and analyse weed surveys in arable farming: a review

Hanzlik

Gerowitt

2016

Agron. Sustain. Dev.

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Arable weeds always accompany arable farming; however, species and abundances vary in space and change in time. Surveys assess weeds on a large spatial scale. The regional and national importance, the abundances in which weeds occur, is derived from surveys. Environmental and management background data assist to explain the weed vegetation. Arable weed surveys can have an agronomic, a botanical or an ecological purpose-we approach the agronomic viewpoint. Scientific value results from spatial data about the arable weed vegetation for modelling the dependencies and predicting future changes on a large scale. Researchers, botanists, farmers, advisors, herbicide manufacturers and other industry players engaged in weed control can get rationale spatial impressions of trends in the weed vegetation. This review focuses on methodical aspects of weed surveys. Forty-three surveys on farmed fields, mainly but not exclusively undertaken in Europe, done in up to nine crops per survey covering periods of 1 to 67 years and including 59 to 4423 fields were excerpted for suitable methods to conduct and analyse surveys. The methods reflect agronomic and other targets, e.g. from vegetation science. When accessing existing data, the interdependencies of the layout and all targets should be handled with care. When setting up surveys for agronomic purpose, it is worthwhile to include 3 years and apply stratified sampling. We recommend assessing abundances rather than presence only. Weed survey data is most suitable for applying multivariate statistics. We recommend using proven methods, without discouraging to explore others. To collect sound explanatory data demands for robust contacts with land managers. Explanatory variables are important in survey analyses to extract knowledge about the drivers of the weed vegetation. We conclude that extra value can be obtained from existing weed survey data. We propose to setup public-private partnerships as a way to carry on with arable weed surveys.

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Weed dispersal by farming at various spatial scales. A review

Cited by 55 publications

References 114 publications

Confronting herbicide resistance with cooperative management

Confronting herbicide resistance with cooperative management

The Eco-Evolutionary Imperative: Revisiting Weed Management in the Midst of an Herbicide Resistance Crisis

Methods to conduct and analyse weed surveys in arable farming: a review

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