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Factors Affecting Performance of Preemergence Herbicides

Published online by Cambridge University Press:  12 June 2017

L. S. Jordan ,
J. M. Lyons ,
W. H. Isom  and
B. E. Day
L. S. Jordan
Affiliation:
University of California, Citrus Research Center and Agricultural Experiment Station, Riverside, California
J. M. Lyons
Affiliation:
University of California, Citrus Research Center and Agricultural Experiment Station, Riverside, California
W. H. Isom
Affiliation:
University of California, Citrus Research Center and Agricultural Experiment Station, Riverside, California
B. E. Day
Affiliation:
University of California, Citrus Research Center and Agricultural Experiment Station, Riverside, California
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Abstract

Spray and granular forms of isopropyl N-(3-chlorophenyl)-carbamate (CIPC, ethyl N,N-dipropylthiocarbamate (EPTC), a,a,a-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine (trifluralin) and 2,4-bis(isopropylamino) -6-methylmercapto-s-triazine (prometryne) were incorporated preemergence to barnyardgrass Echinochloa crusgalli (1.) Beauv.) and broadleaf weeds with a rotary tiller, wheel hoe, rotary spike, or row wheel into pre-irrigated or dry soil at three locations. The locations varied in type of soil, climatic conditions, and the species of broadleaf weeds. Rotary tiller incorporation generally resulted in best weed control with both spray and granular forms under all conditions. Herbicides usually performed best in pre-irrigated soil. Sprays and granules were equal in performance at coastal and intermediate locations; granules were more effective in the desert location. Herbicidal effectiveness was influenced by method of incorporation, form of treatment, soil moisture, environmental location, and weed type.

Type
Research Article
Information
Weed Science , Volume 16 , Issue 4 , October 1968 , pp. 457 - 462
Copyright
Copyright © Weed Science Society of America 

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References

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