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Chemical Control of Red Sorrel in Kentucky Bluegrass Seed Fields

Published online by Cambridge University Press:  12 June 2017

C. L. Canode  and
W. C. Robocker
C. L. Canode
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Pullman, Washington
W. C. Robocker
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Pullman, Washington
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Abstract

Selective control of red sorrel (Rumex acetosella L.) in Kentucky bluegrass (Poa pratensis L.) seed fields was obtained with 2-methoxy-3,6-dichlorobenzoic acid (dicamba), 7-oxabicyclo(2.2.1)-heptane-2,3-dicarboxylic acid (endothall), 3-amino-2,5-dichlorobenzoic acid (amiben), 2,3,6-trichlorophenylacetic acid (fenac), and 2,3,6-trichlorobenzoic acid (2,3,6-TBA). Kentucky bluegrass seed yields and germination were not significantly reduced by application of any of the herbicides in the fall even though rates higher than necessary for red sorrel control were used. Application of dicamba in the spring at more than 1/2 lb/A reduced Kentucky bluegrass seed yields and germination. Endothall reduced seed yields when applied in the spring at 4 or 5 lb/A.

Type
Research Article
Information
Weeds , Volume 15 , Issue 4 , October 1967 , pp. 351 - 353
Copyright
Copyright © 1967 Weed Science Society of America 

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