Hostname: page-component-5c6d5d7d68-txr5j Total loading time: 0 Render date: 2024-08-09T16:42:19.794Z Has data issue: false hasContentIssue false

Inhibitor of Microbial Enzyme Prolongs Dodder Control with Chlorpropham

Published online by Cambridge University Press:  12 June 2017

J. H. Dawson*
Affiliation:
Plant Sci. Res. Div., Agr. Res. Serv., U. S. Dep. of Agr., Irrigated Agr. Res. and Ext. Center, Prosser, Washington

Abstract

Isopropyl m-chlorocarbanilate (chlorpropham) at 6.7 kg/ha applied in mid April controlled dodder (Cuscuta campestris Yunck. and Cuscuta indecora Choisy) that emerged in May but did not consistently control dodder that emerged in June. Mid March applications sometimes controlled dodder that emerged in May but did not control that which emerged in June. When p-chlorophenyl N-methylcarbamate (PCMC), an inhibitor of microbial enzyme activity, at 1.7 kg/ha was applied with chlorpropham at 6.7 kg/ha in mid March or mid February, dodder that emerged in May and June was controlled consistently. A reduced rate (4.5 plus 1.1 kg/ha) of the combined materials applied in mid March also consistently controlled dodder that emerged in May and June.

Type
Research Article
Copyright
Copyright © Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Dawson, J. H. 1966. Response of field dodder to shade. Weeds 14:45.Google Scholar
2. Dawson, J. H. 1966. Factors affecting dodder control with granular CIPC. Weeds 14:255259.Google Scholar
3. Dawson, J. H. 1969. Longevity of dodder control by soil-applied herbicides in the greenhouse. Weed Sci. 17:295298.Google Scholar
4. Dawson, J. H., Lee, W. O., and Timmons, F. L. 1969. Controlling dodder in alfalfa. U. S. Dep. Agr. Farmers' Bull. No. 2211 (revised), 16 p.Google Scholar
5. Harris, C. I. and Sheets, T. J. 1964. Influence of soil properties on adsorption and phytotoxicity of CIPC, diuron, and simazine. Weeds 13:215219.Google Scholar
6. Harris, C. I. and Warren, G. F. 1963. Adsorption and desorption of herbicides in soil. Weeds 12:120126.Google Scholar
7. Kaufman, D. D. and Kearney, P. C. 1965. Microbial degradation of isopropyl-N-3-chlorophenylcarbamate and 2-chloroethyl-N-3-chlorophenylcarbamate. Appl. Microbiol. 13:443446.Google Scholar
8. Kaufman, D. D., Kearney, P. C., Von Endt, D. W., and Miller, D. E. 1970. Methylcarbamate inhibition of phenylcarbamate metabolism in soil. J. Agr.' Food Chem. 18:513519.Google Scholar
9. Kearney, Philip C. 1965. Purification and properties of an enzyme responsible for hydrolyzing phenylcarbamates. J. Agr. Food Chem. 13:561564.Google Scholar
10. Ogle, R. E., and Warren, G. F. 1954. Fate and activity of herbicides in soils. Weeds 3:257273.Google Scholar
11. Pray, Blaine O. and Witman, Eugene D. 1953. Comments: On distribution of CIPC in soil. Weeds 2:300301.Google Scholar
12. Slater, C. H., Dawson, J. H., Furtick, W. R., and Appleby, A. P. 1969. Effects of chlorpropham vapors on dodder seedlings. Weed Sci. 17:238241.Google Scholar