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Buffelgrass (Cenchrus ciliaris) Responses to Tebuthiuron

Published online by Cambridge University Press:  12 June 2017

Wayne T. Hamilton  and
Charles J. Scifres
Wayne T. Hamilton
Affiliation:
Dep. Range Sci., Texas A&M Univ., College Station, TX 77843
Charles J. Scifres
Affiliation:
Dep. Range Sci., Texas A&M Univ., College Station, TX 77843
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Abstract

Tebuthiuron (N-[5-(1,1-dimethylethyl)-1,3,4-thiadiozol-2-yl]-N,N′-dimethylurea} pellets (20% ai) applied at 0.6, 1.1, or 2.2 kg ai/ha in the spring at two locations and in the fall at a third location on the South Texas Plains did not significantly decrease buffelgrass (Cenchrus ciliaris L. # PESCI) standing crop or foliar cover compared to untreated areas. Buffelgrass standing crop was reduced for 8 months after application of 3.3 and 4.4 kg ai/ha of tebuthiuron to a sandy clay loam in the spring, but the same rates did not reduce standing crop after application to clay loam in the fall. However, buffelgrass foliar cover was reduced following application of 3.3 kg ai/ha or more of the herbicide, regardless of soil. Tebuthiuron applied at 2.2, 3.3, or 4.4 kg ai/ha to sandy clay loam soils killed buffelgrass plants in spots, but production by larger surviving plants compensated for reduction in plant density where 2.2 or 3.3 kg ai/ha were applied.

Keywords

South Texasrange managementgrass productiongrass damageforage yieldPESCI
Type
Research Article
Information
Weed Science , Volume 31 , Issue 5 , September 1983 , pp. 634 - 638
Copyright
Copyright © 1983 Weed Science Society of America 

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References

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