Weed Research (1993) 33, 459-467
G. Zanin, A. Berti and L. Toniolo (1993)
Estimation of economic thresholds for weed control in winter wheat
Weed Research 33 (6), 459-467
Abstract: Thresholds for winter wheat weed control have been determined for different herbicides or mixtures effective against individual weed species. For Avena sterilis L. subsp. ludoviciana (Durieu) Nyman the economic threshold was between 7 and 12 plants m−2, for Alopecurus myosuroides Hudson and Lolium multiflorum Lam. it varied between 25 and 35 plants m−2, while for Bromus sterilis L. the values were just under 40 plants m−2. For Galium aparine L. the threshold was as low as 2 plants m−2, while for Vicia sativa L. it was between 5 and 10 plants m−2. Within the same species the different values of economic threshold result from the different costs and efficacy of herbicides. Nitrogen fertilization was important: in its absence, the competitiveness of B. sterilis and G. aparine was negligible, and it was not possible to calculate an economic threshold for some of the treatments which could not be justified economically.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Research topic(s) for pests/diseases/weeds:
control - general
damage/losses/economics
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Galium aparine (weed) | Wheat (Triticum) | Italy | ||
| Alopecurus myosuroides (weed) | Wheat (Triticum) | Italy | ||
| Avena sterilis (weed) | Wheat (Triticum) | Italy | ||
| Bromus sterilis (weed) | Wheat (Triticum) | Italy | ||
| Vicia sativa (weed) | Wheat (Triticum) | Italy | ||
| Lolium perenne multiflorum (weed) | Wheat (Triticum) | Italy |
