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Case History for Weed Competition/Population Ecology: Velvetleaf (Abutilon theophrasti) in Corn (Zea mays)

Published online by Cambridge University Press:  12 June 2017

Maurizio Sattin ,
Giuseppe Zanin  and
Antonio Berti
Maurizio Sattin
Affiliation:
Centro per lo Studio dei Diserbanti del C.N.R., Via Gradenigo 6, 35131 Padova, Italy
Giuseppe Zanin
Affiliation:
Centro per lo Studio dei Diserbanti del C.N.R., Via Gradenigo 6, 35131 Padova, Italy
Antonio Berti
Affiliation:
Univ. Padua, Via Gradenigo 6, 35131 Padova, Italy
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Abstract

According to Grime's model, velvetleaf can be classified as a competitive-ruderal species. Its biological and ecological characteristics make it particularly competitive and persistent in cultivated fields. Herbicide control is difficult and, once established, it is almost impossible to avoid seed production. The economic threshold, on a single year basis, varies between 0.3 and 1.7 plants m–2. When the competitive relationships and their effects are evaluated, it is very difficult to apply a weed management system based on a single-season threshold. When one considers the agronomic implications of the ecological characteristics of velvetleaf over a longer period, it can be concluded that the use of a single-season economic threshold is probably not the best management strategy.

Keywords

Velvetleaf, Abutilon theophrasti Medicus, ♯ ABUTHcorn, Zea mays L.Competition modelpopulation dynamicsweed thresholds
Type
Symposium
Information
Weed Technology , Volume 6 , Issue 1 , March 1992 , pp. 213 - 219
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

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