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Clean Grass Seed Crops Established with Activated Carbon Bands and Herbicides

Published online by Cambridge University Press:  12 June 2017

William O. Lee
William O. Lee*
Affiliation:
Agr. Res. Serv., U.S. Dep. of Agr., Dep. of Agron. Crop Sci., Oregon State Univ., Corvallis, OR 97331
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Abstract

Activated carbon, applied over the seeded row in a band 2.5 cm wide, protected grasses from herbicides applied preemergence. The carbon rate required to protect the grasses varied with the grass species, the herbicide, and the rate of herbicide application. Most of the herbicides controlled weeds effectively between the rows. The herbicides usually controlled weeds less effectively within the carbon bands. Diuron [3-(3,4-dichlorophenyl)-1,1-dimethylurea] was inactivated most readily by the carbon and showed the greatest safety margin on the crop species. Atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine], simazine [2-chloro-4,6-bis(ethylamino)-s-triazine], and terbacil (3-tert-butyl-5-chloro-6-methyluracil) required higher carbon rates for crop protection than diuron and showed a much narrower safety margin on crops. Use of this technique made possible the effective control of weeds during establishment and, subsequently, the production of high quality seed in the first seed crop.

Type
Research Article
Information
Weed Science , Volume 21 , Issue 6 , November 1973 , pp. 537 - 541
Copyright
Copyright © 1973 Weed Science Society of America 

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References

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