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Response of Monocotyledons to HOE 22870 and HOE 23408

Published online by Cambridge University Press:  12 June 2017

Robert N. Andersen
Robert N. Andersen*
Affiliation:
U.S. Dep. Agr.; Dep. of Agron. and Plant Genetics, Univ. of Minnesota, St. Paul, MN 55108
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Abstract

In the greenhouse, postemergence treatments of 1.12 kg/ha of HOE 22870 [4-(4′-chlorophenoxy)-phenoxy-α-propionic-isobutylester] or HOE 23408 methyl 2-[4-(2,4-dichlorophenoxy)phenoxy] propanoate were applied to three perennial weeds (two grasses and one sedge) and to 27 species or varieties of annual grasses (crops and weeds). The perennials were resistant to both compounds, but control of the seedling grasses ranged from 0 to 100%, indicating the potential of controlling certain grass weeds in certain grass crops, as well as in broadleaf crops. Generally, the response of a given species was similar for both compounds. However, on some grasses one compound was considerably more effective than the other. Seven species or varieties of foxtail (Setaria spp.) were treated with various rates of either compound. Differential responses were observed, but it appeared that all the foxtail species or varieties studied should probably be controllable with HOE 23408. All but yellow foxtail [Setaria lutescens (Weigel) Hubb.], should probably be controllable with HOE 22870.

Type
Research Article
Information
Weed Science , Volume 24 , Issue 3 , May 1976 , pp. 266 - 269
Copyright
Copyright © 1976 by the Weed Science Society of America 

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References

Literature Cited

1. Andersen, R.N. 1973. Postemergence treatments for controlling volunteer corn and giant foxtail in soybeans. Proc. N. Cent. Weed Contr. Conf. 28:52.Google Scholar
2. Oliver, L.R. and Schreiber, M.M. 1971. Differential selectivity of herbicides on six Setaria taxa. Weed Sci. 19:428–431.Google Scholar
3. Santelmann, P.W. and Meade, J.A. 1961. Variation in morphological characteristics and dalapon susceptibility within the species Setaria lutescens and S. faberi . Weeds 9:406–510.Google Scholar