per_kudsk_prague11
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Survey of weeds in maize crops in Europe
Per Kudsk & P.K. JensenAarhus University
Denmark
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Background
Study commissioned by MonsantoMain purpose was to develop a complete list of weeds rather than an exact classification of their frequencyData collected by contacting national expertsContributions in the form of
Questionnaire (very common, common or less common/rare)
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Questionnaire
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Background
Study commissioned by MonsantoMain purpose was to develop a complete list of weeds rather than an exact classification of their frequencyData collected by contacting national expertsContributions in the form of
A questionnaire (very common, common or less common/rare) Recent weed surveysWeed occurrence in herbicide efficacy trials
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Contributors
V. Bibard & J.-B. Thibord, FranceE. Czembor, PolandS. Dumitru, Romania G. Foucart, BelgiumR.J. Froud-Williams, UKP.K. Jensen & J.E. Jensen, DenmarkM. Saavedra & A.Taberner, Spain M. Sattin, ItalyJ. Soukup, Czech RepublicW. Voegler, Germany
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Maize area in surveyed countries
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Overall results
203 weed species belonging to 42 families were reported61 weed species were assessed as being ”very common” in at least one countryChenopodium album was the only weed species classified as ”very common” in all countries
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Chenopodium album
Very common
Common
Less common/rare
Very rare/absent
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Amaranthus spp.
Very common
Common
Less common/rare
Very rare/absent
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Ambrosia artemisifolia
Very common
Common
Less common/rare
Very rare/absent
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Datura stramonium & Stellaria media
Very common
Common
Less common/rare
Very rare/absent
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Echinochloa crus-galli & Setaria spp.
Very common
Common
Less common/rare
Very rare/absent
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Poa anua & Elymus repens
Very common
Common
Less common/rare
Very rare/absent
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