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Chemical Fallow of Abandoned Croplands on the Short-Grass Plains

Published online by Cambridge University Press:  12 June 2017

D. N. Hyder  and
A. G. Everson
D. N. Hyder
Affiliation:
Fort Collins
A. G. Everson
Affiliation:
Fort Collins
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Abstract

Chemical-fallow experiments were initiated as a possible means of improving summer-fallow procedures for seedbed preparation and rehabilitation of abandoned croplands subject to wind erosion. Red threeawn (Aristida longiseta Steud.) and sand dropseed (Sporobolus cryptandrus (Torr.) Gray) are pioneer perennial grasses that have stabilized these sandy loam soils but are undesirable forage plants. Dimethylarsinic acid (cacodylic acid), 2-tert-butylamino-4-ethylamino-6-methylthio-5-triazine (GS-14260), and a mixture of 3-amino-l,2,4-triazole (amitrole) plus ammonium thiocyanate were ineffective, but 2,2-dichloropropionic acid (dalapon) applied at 6 lb/A or more reduced these pioneer perennial grasses 80 to 100%. Follow-up treatments, either mechanical or chemical, are needed to maintain control of competing vegetation while seeded species become established.

Type
Research Article
Information
Weed Science , Volume 16 , Issue 4 , October 1968 , pp. 531 - 533
Copyright
Copyright © Weed Science Society of America 

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References

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