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An Explanation for the Selective Control of Barnyardgrass in Rice with CIPC

Published online by Cambridge University Press:  12 June 2017

John B. Baker
John B. Baker*
Affiliation:
Plant Pathology Department, Agricultural Experiment Station, Louisiana State University, Baton, Rouge, Louisiana
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Extract

Since isopropyl N-(3-chlorophenyl)carbamate (CIPC) is being recommended for use on a limited acreage to control barnyardgrass (Echinochloa species) in drilled rice, it was of interest to the author to investigate the mechanism of selectivity involved. Although a difference in sensitivity among graminaceous plants to isopropyl N–phenylcarbamate (IPC) and CIPC has been recorded, the author was unable to find any explanation for this difference. Observations in the field indicated that Echinochloa seedlings were killed regardless of the depth at which the seed was located; whereas, most rice seedlings escaped injury if the seed was planted sufficiently deep. There appeared to be, however, a difference in response among varieties of rice. The following investigation was initiated to explain the differential response among varieties; however, the conclusions were expanded to explain the selective mechanism for controlling barnyardgrass in rice. The data presented in this paper are representative of results obtained in a series of experiments on this subject.

Type
Research Article
Information
Weeds , Volume 8 , Issue 1 , January 1960 , pp. 39 - 47
Copyright
Copyright © 1960 Weed Science Society of America 

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References

Literature Cited

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