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Volunteer Kentucky Bluegrass (Poa pratensis) Control in Kentucky Bluegrass Seed Fields

Published online by Cambridge University Press:  12 June 2017

W. O. Lee
W. O. Lee*
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Crop Sci. Dep., Oregon State Univ., Corvallis, OR 97331
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Abstract

The carbon banding technique was evaluated for control of volunteer Kentucky bluegrass (Poa pratensis L.) while Kentucky bluegrass was established for seed production. At Madras, Oregon, where terbacil (3-tert-butyl-5-chloro-6-methyluracil), diuron [3-(3,4-dichlorophenyl)-1,1-dimethylurea], atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine], and simazine [2-chloro-4,6-bis(ethylamino)-s-triazine] were applied at several rates each, volunteer Kentucky bluegrass control between the carbon bands ranged from 80 to 99+%. At Corvallis, Oregon, where Colonial bentgrass (Agrostis tenuis Sibth. ‘Highland’), red fescue (Festuca rubra L. ‘Pennlawn’), perennial ryegrass (Lolium perenne L. ‘NK-100’), and orchardgrass (Dactylis glomerata L. ‘S-143’) were planted to allow identification of volunteer Kentucky bluegrass both between and in the carbon bands, diuron, atrazine, and a combination of diuron and terbacil eliminated volunteer Kentucky bluegrass. Terbacil did not control all Kentucky bluegrass between the bands. None of the herbicide treatments adversely affected crop establishment or seed yield.

Keywords

Seed productionherbicidesweed control
Type
Research Article
Information
Weed Science , Volume 26 , Issue 6 , November 1978 , pp. 675 - 678
Copyright
Copyright © 1978 by the Weed Science Society of America 

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References

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