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A Device for Subsurface Application of Herbicides

Published online by Cambridge University Press:  12 June 2017

O. B. Wooten  and
C. G. McWhorter
O. B. Wooten
Affiliation:
Agricultural Engineering Research Division, Agricultural Research Service, United States Department of Agriculture
C. G. McWhorter
Affiliation:
Crops Research Division, Agricultural Research Service, United States Department of Agriculture, and the Mississippi Agricultural Experiment Station
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Extract

It has been only in comparatively recent years that any appreciable work has been conducted on equipment for the application of chemicals in the soil. Most of the early work was devoted primarily to methods of applying anhydrous ammonia and liquid solutions as fertilizers. In most of this work the principal injection tool consisted of a chisel-type applicator that released the chemical at a single point in the soil. In recent years, investigators have attempted to devise efficient and uniform methods of subsurface distribution. Hedman and Turner reported on a chisel-type applicator equipped with a “fishtail” to give more lateral spread to anhydrous ammonia. Arya and Pickard studied the effect of high pressures and velocities on the application of anhydrous ammonia, which was also single-point injection. Certain problems associated with the application of fungicides and herbicides in the soil have been discussed by Owen and Becker and Costel.

Type
Research Article
Information
Weeds , Volume 9 , Issue 1 , January 1961 , pp. 36 - 41
Copyright
Copyright © 1961 Weed Science Society of America 

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References

Literature Cited

1. Arya, S. V., and Pickard, G. E. Penetration of liquid jets in soil. Agr. Eng. Jour. 39:16–23. 1958.Google Scholar
2. Becker, C. F., and Costel, G. L. Equipment for the application of granular herbicides. Wyoming Agr. Expt. Sta. Mimeo. Cir. 102. 1958.Google Scholar
3. Hedman, C. L., and Turner, J. R. Application of anhydrous ammonia fertilizer. Agr. Eng. Jour. 35:801–807. 1954.Google Scholar
4. Owen, R. O. Equipment for applying soil fumigants. Agr. Eng. Jour. 29:435–436. 1948.Google Scholar
5. McWhorter, C. G., and Wooten, O. B. The use of fluorescent tracers to study distribution of soil-applied herbicides. Weeds, this issue.Google Scholar