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The Response of Fumitory to Various Herbicides

Published online by Cambridge University Press:  12 June 2017

Larry S. Jeffery  and
John D. Nalewaja
Larry S. Jeffery
Affiliation:
Agronomy Department, North Dakota State University, Fargo, N. D. University of Nebraska, Lincoln, Nebraska
John D. Nalewaja
Affiliation:
Agronomy Department, North Dakota State University, Fargo, North Dakota
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Abstract

Ioxynil (4-hydroxy-3,5-diiodobenzonitrile) and 2-(2,4-dichlorophenoxy)propionic acid (dichlorprop) appeared effective for control of fumitory (Fumaria officinalis L.) of the 10 herbicides tested in 1963. In 1964 and 1965, both herbicides were further tested under field conditions, but fumitory control results were erratic. Fumitory plants which had been treated with dichlorprop, although not killed, did not produce seed. Experiments under controlled environmental conditions showed that susceptibility of fumitory to ioxynil and dichlorprop was affected by temperature and humidity. High temperature and humidity were necessary for both herbicides to completely kill the plants although dichlorprop injured fumitory under all the environments. Fumitory was more susceptible to dichlorprop applied at the early stages of growth and more susceptible to ioxynil applied at the later stages.

Type
Research Article
Information
Weed Science , Volume 17 , Issue 3 , July 1969 , pp. 355 - 358
Copyright
Copyright © 1969 Weed Science Society of America 

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References

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