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Published in Crop Sci 9:599-601 (1969)
© 1969 Crop Science Society of America
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Differential Responses of Cynodon dactylon (L.) Pers. Selections to Three Herbicides1

Lee G. Anderson and William R. Kneebone2

Bermudagrass (Cynodon dactylon (L.) Pets.) selections were evaluated as rooted cuttings for their reaction to atrazine, bromacil, and dalapon applied as subirrigation solutions. Herbicide effects were first observable as changes in leaf color with leaves becoming yellow and ultimately dying. These changes were quantitatively assessed by a recording densitometer. Selections differed significantly in responses to herbicide exposure with some showing a high degree of resistance. No selection was resistant to all three herbicides.

Key Words: Atrazine • Bromacil • Dalapon

1 Contribution from the Agronomy Department, University of Arizona, Tucson, Ariz. 85721. Published with approval of the Director of the Arizona Agricultural Experiment Station as Journal Article No. 1443. Part of a thesis submitted by the senior author in partial fulfillment of the requirements for the M.S. degree.

2 Former Graduate Research Assistant and Professor of Agronomy.

Received for publication February 15, 1969.




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