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Tolerance of Peas (Pisum sativum) to Acifluorfen Applied Preemergence

Published online by Cambridge University Press:  12 June 2017

John R. Teasdale  and
J. Ray Frank
John R. Teasdale
Affiliation:
U.S. Dep. Agric., Beltsville, MD 20705
J. Ray Frank
Affiliation:
U.S. Dep. Agric., Beltsville, MD 20705
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Abstract

In four field experiments, acifluorfen {5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acid} applied preemergence at 1.1 kg/ha was not phytotoxic to peas (Pisum sativum L.) and increased the yield of shelled peas by an average of 25% compared to the weedy control. Yields were highest in all four experiments at the 1.1 kg/ha rate and tended to decline at higher rates of application. Growth chamber studies demonstrated that pea tolerance to acifluorfen was not affected by temperatures of 16/10 to 27/21C (light/dark) nor by stimulated rainfall of 0.5 to 5.0 cm. Peas and soybeans [Glycine max (L.) Merr.] were more tolerant of acifluorfen than were snap beans (Phaseolus vulgaris L.) and lima beans (Phaseolus lunatus L.) when acifluorfen was applied preemergence in the greenhouse or in hydroponic nutrient solution.

Keywords

TemperaturerainfallGlycine maxPhaseolus vulgarisPhaseolus lunatus
Type
Research Article
Information
Weed Science , Volume 31 , Issue 5 , September 1983 , pp. 592 - 596
Copyright
Copyright © 1983 Weed Science Society of America 

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References

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