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Role of Endothall in the Control of Annual Bluegrass in Turf

Published online by Cambridge University Press:  12 June 2017

A. J. Turgeon ,
W. F. Meggitt  and
Donald Penner
A. J. Turgeon
Affiliation:
Dep. of Crop and Soil Sci., Michigan State Univ., E. Lansing, Michigan 48823
W. F. Meggitt
Affiliation:
Dep. of Crop and Soil Sci., Michigan State Univ., E. Lansing, Michigan 48823
Donald Penner
Affiliation:
Dep. of Crop and Soil Sci., Michigan State Univ., E. Lansing, Michigan 48823
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Abstract

Endothall (7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid) was evaluated for controlling annual bluegrass (Poa annua L.) infestations in Kentucky bluegrass (Poa pratensis L.) and creeping bentgrass (Agrostis stolonifera L.) turfs. Growth of annual bluegrass was selectively suppressed by three applications of 0.6 kg/ha of endothall, two or three applications of 1.1 and 2.2 kg/ha, and one application of 4.5 kg/ha made to the single plant sand cultures. Field treatments were variable and seasonably dependent. Endothall selectively killed annual bluegrass when applied to roots in sand culture at a concentration of 2.7 × 10−4 molar. A granular formulation of endothall provided selective control of annual bluegrass in field and greenhouse studies. High watering frequency prior to application, low organic matter content of the underlying soil, and predominance of the annual biotype of annual bluegrass enhanced the selective action at the lowest rates of endothall application.

Type
Research Article
Information
Weed Science , Volume 20 , Issue 6 , November 1972 , pp. 562 - 565
Copyright
Copyright © 1972 Weed Science Society of America 

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References

Literature Cited

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