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Toxicity of an UHF Device to Plant Seeds in Soil

Published online by Cambridge University Press:  12 June 2017

J. R. Wayland ,
F. S. Davis  and
M. G. Merkle
J. R. Wayland
Affiliation:
Texas A&M Univ
F. S. Davis
Affiliation:
Dep. of Soil and Crop Sci., Texas A&M Univ., College Station, TX. 77843
M. G. Merkle
Affiliation:
Dep. of Soil and Crop Sci., Texas A&M Univ., College Station, TX. 77843
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Abstract

An application was developed to project UHF electromagnetic fields into soils containing seeds. The unconfined field (2450±20 Mhz) was effective in killing seeds in the soil. At a fixed energy level the toxicity of the field to wheat (Triticum aestivum L.) and radish (Raphanus sativus L.) was constant or slightly increased as the time of exposure was decreased. Thus, the energy requirement for a given level of toxicity can be met by substituting increased power levels for time of exposure in the range of 100 and 1200 watts.

Type
Research Article
Information
Weed Science , Volume 21 , Issue 3 , May 1973 , pp. 161 - 162
Copyright
Copyright © 1973 Weed Science Society of America 

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References

Literature Cited

1. Davis, F. S., Wayland, J. R., and Merkle, M. G. 1971. UHF electromagnetic fields for weed control: Phytotoxicity and selectivity. Science 173:535–537.CrossRefGoogle Scholar
2. Davis, F. S., Wayland, J. R., Robinson, C. W., and Merkle, M. G. 1972. Some factors affecting differential phytotoxicity of a UHF electromagnetic field. Nature (in press).Google Scholar
3. Wayland, J. R., Davis, F. S., Young, L. M., and Merkle, M. G. 1972. Effects of UHF fields on plants and seeds of mesquite and beans. J. Microwave Power (in press).CrossRefGoogle Scholar