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Effects of Environment upon Herbicides Applied Preemergence

Published online by Cambridge University Press:  12 June 2017

Walter E. Splittstoesser  and
Lyle A. Derscheid
Walter E. Splittstoesser
Affiliation:
South Dakota State College, Brookings, South Dakota
Lyle A. Derscheid
Affiliation:
South Dakota State College, Brookings, South Dakota
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Abstract

The effects of rainfall and temperature upon herbicidal activity of 2-chloro-N,N-diallylacetamide (CDAA), 2-chloro-4,6-bis-(ethylamino)-s-triazine (simazine), and 2-chloro-4-ethylamino-6-isopropylamino-s-triazine (atrazine), for the control of foxtail (Setaria spp.) were determined. CDAA spray was effective if applied to warm soil and if ½ inch of rain fell during the first week after application, unless a heavy rain fell immediately after application. The effectiveness of granules was not impaired by a heavy rain immediately after treatment or by a delay of 2 weeks before receiving ½ inch of rain. Simazine and atrazine sprays and granules were effective if 1 inch of rain fell within 15 days after application of simazine or if ½ to 1 inch fell within 15 to 20 days afterwards for atrazine. Mechanical incorporation aided in activation of simazine when rainfall was slightly below minimum required for activation.

Type
Research Article
Information
Weeds , Volume 10 , Issue 4 , October 1962 , pp. 304 - 307
Copyright
Copyright © 1962 Weed Science Society of America 

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References

Literature Cited

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