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Uhf Electromagnetic Energy for Weed Control in Vegetables

Published online by Cambridge University Press:  12 June 2017

R. M. Menges  and
J. R. Wayland
R. M. Menges
Affiliation:
Subtropical Texas Area, S. Region, Agr. Res. Serv., U.S. Dep. of Agr., Weslaco, TX 78596
J. R. Wayland
Affiliation:
Physics Dep., Texas Agr. and Mechanical Univ., College Station, TX 77843
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Abstract

UHF energies (45 to 730 j/cm2, 2450 MHz) were applied to irrigated and non-irrigated soils in the field just before planting of cantaloupe (Cucumis melo L., var. reticulatus Naudin) and onion (Allium cepa L.) to study the influence of UHF energy on plant growth. London rocket (Sisymbrium irio L.) and sunflower (Helianthus annuus L.) were controlled with 180 j/cm2 of UHF energy applied after seed had imbibed water from soil. These species and ridgeseed spurge (Euphorbia glyptosperma Engelm.), redroot pigweed (Amaranthus retroflexus L.), common purslane (Portulaca oleracea L.), and Japanese millet [Echinochloa frumentacea (Roxb.) Link.] were controlled with 360 j/cm2 (0.0048 kmph) regardless of seed or soil moisture. London rocket and sunflower were not controlled by several soil-incorporated herbicides. UHF energy had no deleterious effects on the growth of cantaloupe or onion and tended to increase the yields above those of the hand-weeded vegetables. Phytotoxic UHF radiation penetrated 7.5 and 10 cm in irrigated and non-irrigated soil, respectively, at 360 j/cm2. Soil temperature after UHF treatment increased with increasing UHF energy levels and decreasing soil moisture and depth.

Type
Research Article
Information
Weed Science , Volume 22 , Issue 6 , November 1974 , pp. 584 - 590
Copyright
Copyright © 1974 by the Weed Science Society of America 

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References

Literature Cited

1. Coartney, J.S., Hawkins, G.W., and Larsen, D.G. 1974. Effects of microwaves on soil chemistry. Proc. S. Weed Sci. Soc. 27:199 (Abstr.).Google Scholar
2. Davis, F.S., Wayland, J.R., and Merkle, M.G. 1971. Ultrahigh-frequency electromagnetic fields for weed control: phytotoxicity and selectivity. Science 173:535–537.Google Scholar
3. Davis, F.S., Wayland, J.R., and Merkle, M.G. 1973. Phytotoxicity of a UHF electromagnetic field. Nature 241:291–292.CrossRefGoogle Scholar
4. Heald, C.M., Menges, R.M., and Wayland, J.R. 1973. Effects of ultrahigh frequency electromagnetic energy on Rotylenchulus reniformis . Proc. Assn. S. Agr. Workers, Inc. Page 200 (Abstr.).Google Scholar
5. Heiden, E. 1859. Ueber das Keimen der Gerste. Dissertation 34. 1859. Cited by Detmer, W. 1880 in Vergleichende Physiologie des Keimungsprocesses der Samen. 403 pp.Google Scholar
6. Holm, R.E. and Miller, M.R. 1972. Weed seed germination responses to chemical and physical treatments. Weed Sci. 20:150–153.CrossRefGoogle Scholar
7. Hopkins, C.Y. 1936. Thermal death point of certain weed seeds. Canadian J. Res. Sec. C-14:178–183.CrossRefGoogle Scholar
8. Menges, R.M. and Hubbard, J.L. 1970. Selectivity, movement, and persistence of soil-incorporated herbicides in carrot plantings. Weed Sci. 18:247–252.Google Scholar
9. Menges, R.M. and Hubbard, J.L. 1971. Effect of soil incorporation on selectivity, movement, and persistence of herbicides in cabbage plantings. J. Amer. Soc. Hort. Sci. 96:333–337.CrossRefGoogle Scholar
10. Menges, R.M. and Tamez, S. 1973. Effect of soil incorporation on selectivity, movement, and persistence of herbicides in onion plantings. J. Amer. Soc. Hort. Sci. 98:390–393.Google Scholar
11. Menges, R.M. and Tamez, S. 1974. The movement and persistence of bensulide and trifluralin in irrigated soil. Weed Sci. 22:67–71.CrossRefGoogle Scholar
12. Nelson, S.O. 1970. Effects of radiofrequency electrical treatment on germination of vegetable seeds. J. Amer. Soc. Hort. Sci. 95:359–366.Google Scholar
13. Tverskoi, D.L. 1937. The effect of short and ultra-short radio waves on fungi and bacteria pathogenic to plants. Zashchita Rosterii 13:32–8 in: Ark, P.A. and Willet, P. 1940. Application of high frequency electrostatic fields in agriculture. Quarterly Rev. of Biol. 15:172–191.Google Scholar
14. Waggoner, H.D. 1917. The viability of radish seeds (Raphanus sativus L.) as affected by high temperatures and water content. Amer. J. Botany 4:299–313.CrossRefGoogle Scholar
15. Wayland, J.R., Davis, F.S., Young, L.W., and Merkle, M.G. 1972. Effects of UHF fields on plants and seeds of mesquite and beans. J. Microwave Power 7:385–388.CrossRefGoogle Scholar
16. Wayland, J.R., Davis, F.S., and Merkle, M.G. 1973. Toxicity of an UHF device to plant seeds in soil. Weed Sci. 21:161–162.Google Scholar
17. Whatley, T.L., Wayland, J.R., Davis, F.S., and Merkle, M.G. 1973. Effects of soil moisture on phytotoxicity of microwave fields. Proc. S. Weed Sci. Soc. 26:389 (Abstr.).Google Scholar
18. Whatley, T.L., Wayland, J.R., and Merkle, M.G. 1974. Factors affecting the phytotoxicity of a microwave field. Proc. S. Weed Sci. Soc. 27:344 (Abstr.).Google Scholar