The Worldwide Spread, Success, and Impact of Ragweed (<i>Ambrosia</i>spp.)

Montagnani, Cristina; Gentili, Rodolfo; Smith, Matt; Guarino, Maria Francesca; Citterio, Sandra

doi:10.1080/07352689.2017.1360112

Cited by 80 publications

(74 citation statements)

References 248 publications

(349 reference statements)

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“…Our earlier investigation reports similar correlations in maize and sunflower crops with around 30% as the 'critical limit' (Pinke et al 2011). These results indicate that high crop cover can create unfavourable conditions for A. artemisiifolia, because it grows best in full sunlight (Essl et al 2015) and it performs poorly at low light intensities (Montagnani et al 2017). Crop cover is an indirect cultural variable, which depends on many cultural practices, like seeding rate, row spacing, cultivar and application of fertilizers.…”

Section: General Predictors For the Whole Area Studiedmentioning

confidence: 97%

“…Common ragweed (Ambrosia artemisiifolia L.), a noxious arable weed of North American origin, is currently spreading all over the world (Makra et al 2015, Montagnani et al 2017). Because of its highly allergenic pollen, negative effects on biodiversity and the yield of agricultural crops, ragweed has recently become the focus of scientific research (Essl et al 2015, Alberternst et al 2016.…”

Section: Introductionmentioning

confidence: 99%

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Drivers of Ambrosia artemisiifolia abundance in arable fields along the Austrian-Hungarian border

Pinke¹,

Kolejanisz²,

Vér³

et al. 2019

Preslia

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The Carpathian Basin is one of the most important regions in terms of the invasion of the common ragweed (Ambrosia artemisiifolia) in Europe. The invasion history of this weed, however, seems to have been assessed differently in Austria and Hungary: scientists in both countries assumed that this species had become abundant earlier and had caused more problems in their own than in other country. The goal of this study is to resolve the historical misunderstandings and scrutinize the related popular beliefs by a concise literature overview and an extensive analysis of the current patterns in ragweed infestations in crops in the borderlands in eastern Austria and western Hungary. The abundance of A. artemisiifolia was measured in 200 arable fields across the region, along with 31 background variables. Data were analysed using binomial generalized linear models (GLM), decision tree models and variation partitioning. Ambrosia artemisiifolia occurred more frequently in Hungary, but there were no significant differences in the proportion of larger cover values recorded in these two countries, and 'cover values > 10%' were even slightly more common in Austria. We found that previous crops of maize and soya bean and conventional farming were associated with the higher abundances in Austria, while organic farming was associated with relatively higher frequencies of heavy infestations in Hungarian fields. In the overall analysis crop cover was the most important variable with low crop cover associated with high ragweed abundance. Temperature and phosphorous fertilizer were negatively, while precipitation and soil phosphorous concentration positively associated with the abundance values. Land-use variables accounted for more of the variance in the abundance patterns of common ragweed than environmental variables. The current patterns in ragweed distribution might indicate that a saturation process is still underway on the Austrian side. The saturation lag of 20-30 years is possibly due to several factors and the role of the Iron Curtain in determining cross-border exchange of propagules could be decisive. Nevertheless, the discrepancies uncovered in the accounts of the invasion of Hungarian and Austrian authors might also be seen as legacies of the Iron Curtain, which were caused by mutual limitations on access to national data and literature of the other country in a critical period of rapid ragweed spread. These discrepancies, that had a long-lasting effect on the work of scientific communities, are documented here in detail for the first time. K e y w o r d s: agriculture, arable fields, common ragweed, invasion, invasive plants, ragweed, spread, weed distribution, weed ecology

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Section: General Predictors For the Whole Area Studiedmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Drivers of Ambrosia artemisiifolia abundance in arable fields along the Austrian-Hungarian border

Pinke¹,

Kolejanisz²,

Vér³

et al. 2019

Preslia

View full text Add to dashboard Cite

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“…Among IAPs, Ambrosia artemisiifolia L. (common ragweed) is a species of great concern in Europe. Since the nineteenth century, this species of North American origin has been accidentally introduced in Europe where it has naturalized and is now considered an increasingly serious threat to both environment and human health (Montagnani et al, 2017 ). It is a fast-growing annual weed in crop fields and a colonizer in open-disturbed areas, capable of producing considerable aboveground biomass at various pure stand densities (Patracchini et al, 2011 ; Fenesi and Botta-Dukát, 2012 ; Gentili et al, 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Effect of Soil pH on the Growth, Reproductive Investment and Pollen Allergenicity of Ambrosia artemisiifolia L.

et al. 2018

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Despite the importance of soil reaction for alien plant establishment, few and incomplete studies have included this key factor so far. In this study, we investigated the effects of soil pH on the germination, growth (plant height, width, dry weight, etc.) and reproductive investment (inflorescence size and n° of flowers) of Ambrosia artemisiifolia (common ragweed), an allergenic species that is highly invasive and alien in Europe, through a replicated experiment in controlled conditions. In addition, we determined if soil pH has an effect on the total pollen allergenicity of the species. After preliminary germination tests on agar at different pH (from pH4 to pH8), plants were grown in natural soils with pH values of 5 (acid), 6 (sub-acid) and 7 (neutral) obtained by modifying a natural soil by liming methods (calcium hydroxide solution). Results showed that plants grown at pH7 were shorter and developed leaves at a slower rate than those grown at pH5 and pH6; plants grown at pH7 did not produce flowers and pollen. We also observed that, at pH5 and pH6, larger plants (as assessed by the dry weight of the aerial biomass) had both larger and more numerous inflorescences and emitted pollen earlier. Finally, the IgE-binding signal was higher in pollen samples collected from plants grown at pH5 (Integrated Optical Density, IOD, range: 1.12–1.25) than in those grown at pH6 (IOD range: 0.86 −1.03). Although we acknowledge the limitations of only testing the effects of pH in controlled conditions, this study suggests that soil pH greatly affects the growth and development of A. artemisiifolia and indicates that it may have a role in limiting the distribution and hazardousness of this plant. Future field tests should therefore assess the effectiveness of liming in the management and control of ragweed and other alien species.

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“…The species, native to North America, was accidentally introduced into the wild in Europe around the middle of the 19 th century ) probably through contaminated seed stocks (birdseeds, corn, grain etc. ; Brandes and Nitzsche 2006) and, from then, it spread exponentially in several countries (Chauvel et al 2006) and other continents (Montagnani et al 2017). It is expected that the species will expand its range further due to its great dispersal ability and favoured by global warming (Cunze et al 2013, Chapman et al 2014, Leiblein-Wild et al 2016, Skálová et al 2017.…”

Section: Introductionmentioning

confidence: 99%

“…It is expected that the species will expand its range further due to its great dispersal ability and favoured by global warming (Cunze et al 2013, Chapman et al 2014, Leiblein-Wild et al 2016, Skálová et al 2017. Exchanges of contaminated crop seeds still represent an important vector for diffusion (Essl et al 2015) but, despite the absence of specialised dispersal structures, A. artemisiifolia seeds are also spread by water (river flooding; Fumanal et al 2007), animals and human activities (Chauvel et al 2006, Vitalos and Karrer 2009, Von der Lippe et al 2013, Montagnani et al 2017. As an annual pioneer species, it colonises disturbed habitats, such as river corridors, roadside verges, ruderal and agricultural areas (Chauvel et al 2006, Müller-Schärer et al 2014, Gentili et al 2015.…”

Section: Introductionmentioning

confidence: 99%

Ambrosia artemisiifolia control in agricultural areas: effect of grassland seeding and herbivory by the exotic leaf beetle Ophraella communa

Cardarelli¹,

Musacchio²,

Montagnani³

et al. 2018

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Ambrosia artemisiifolia (common ragweed) is an invasive species native to North America and was accidentally introduced to Europe in the 19 th century. Widespread in disturbed habitats, it is a major weed in spring-sown crops and it causes serious allergic rhinitis and asthma due to its allergenic pollen. The aim of this research was to analyse the effects of both competitive vegetation and herbivory by Ophraella communa to control A. artemisiifolia in an agricultural area of north-western Italy. Hayseed mixtures, both over-seeded over the resident plant community or after ploughing, when seeded before the winter season, were able to suppress the establishment of A. artemisiifolia as well as to reduce its growth in terms of plant height and inflorescence size. Defoliation of A. artemisiifolia by O. communa at the end of the growing season was conspicuous but most of the plants still produced flowers and seeds. However, significant O. communa attack was recorded for reproductive structures. As for non-target species, O. communa was mainly recorded on Asteraceae, with low density and low degree of damage. Reduction of inflorescence size due to competitive vegetation and damage to male flowers by O. communa may diminish the amount of available pollen. The results of this study may be useful for the implementation of management measures to control A. artemisiifolia in agricultural areas using mixtures of native species.

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The Worldwide Spread, Success, and Impact of Ragweed (Ambrosiaspp.)

Cited by 80 publications

References 248 publications

Drivers of Ambrosia artemisiifolia abundance in arable fields along the Austrian-Hungarian border

Drivers of Ambrosia artemisiifolia abundance in arable fields along the Austrian-Hungarian border

Effect of Soil pH on the Growth, Reproductive Investment and Pollen Allergenicity of Ambrosia artemisiifolia L.

Ambrosia artemisiifolia control in agricultural areas: effect of grassland seeding and herbivory by the exotic leaf beetle Ophraella communa

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