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Effect of Paraquat Plus Prescribed Burning on Eastern Redcedar (Juniperus virginiana)

Published online by Cambridge University Press:  12 June 2017

David M. Engle ,
Jimmy F. Stritzke  and
P. Larry Claypool
David M. Engle
Affiliation:
Dept. Agron, Okla. State Univ., Stillwater, OK 74078
Jimmy F. Stritzke
Affiliation:
Dept. Agron, Okla. State Univ., Stillwater, OK 74078
P. Larry Claypool
Affiliation:
Dept. Stat., Okla. State Univ., Stillwater, OK 74078
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Abstract

Paraquat (1,1′-dimethyl-4,4′-bipyridinium ion) was evaluated as a pretreatment for eastern redcedar (Juniperus virginiana L. # IUPVI) before spring burning in tallgrass prairie. Wetting sprays of paraquat at 0.3 g ai/L or 0.6 g/L were applied to crowns of small (0.8 to 1.5 m), medium (1.5 to 2.5 m), and large (2.5 to 5.0 m) eastern redcedar trees in August 1983 and 1984 before prescribed burns in the springs of 1984 and 1985. Paraquat alone at the 0.6 g/L concentration killed about 90% of the crown of small trees but as little as 30% of the crown of large trees. Paraquat pretreatments increased post-fire damage to small- and medium-size trees and partially compensated for light fine fuel loading.

Keywords

Integrated brush managementfireIUPVI
Type
Research
Information
Weed Technology , Volume 2 , Issue 2 , April 1988 , pp. 172 - 174
Copyright
Copyright © 1988 by the Weed Science Society of America 

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References

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