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- Title
Comparison of chlorsulfuron and metsulfuron for control of AIlium vineale L.
- Authors
Leys, A. R.; Slife, F. W.
- Abstract
The response of natural and planted stands of <em>Allium vineale</em> L. to chlorsulfuron and metsulfuron was determined in field experiments in Illinois, U.S.A., in 1982 and 1983. In natural stands very low rates of either herbicide controlled <em>A. vineale</em>. Chlorsulfuron. applied in the spring at 20 g ha-1, reduced aerial bulblet production by 99% but when it was applied in the fall it reduced aerial bulblet production by only 59%. All rates of melsulfuron (5-20 g ha-1), at both times of application, effected better than 94% reduction in plant density and yield of aerial bulblets. In a glasshouse experiment, plants derived from aerial bulblets were more susceptible to chlorsulfuron than plants derived from soft offset bulbs. Soft offset bulbs were, therefore, used to establish a uniform stand of <em>A. vineale</em> in the field. In this experiment, non-linear regression analysis showed that melsulfuron was two to three times more active than chlorsulfuron. GR95 values calculated from the computed regression equations show that metsulfuron and chlorsulfuron, applied in April at 5 and 15 g ha-1, respectively, reduced aerial and underground bulb production by 95%.
- Subjects
ALLIUM vineale; HERBICIDES; PLANT physiology; AGRICULTURAL experimentation; EXPERIMENTAL agriculture
- Publication
Weed Research, 1987, Vol 27, Issue 1, p35
- ISSN
0043-1737
- Publication type
Article
- DOI
10.1111/j.1365-3180.1987.tb00734.x