Root histology of two turfgrass cultivars in response to selected herbicides

Author

Cynthia A. Harper

Date of Award

12-1982

Degree Type

Thesis

Degree Name

Master of Science

Major

Landscape Architecture

Major Professor

Lloyd M. Callahan

Committee Members

Effin T. Graham, Larry S. Jeffery, Donald B. Williams

Abstract

Foliage growth and root cellular responses of Penncross creeping bentgrass (Agrostis palustris Huds.) and Tifgreen bermudagrass [Cynodon dactylon (L.) Pers. x Cynodon transvaalensis Burtt- Davy] to selected herbicides were observed. Also noted was the ability of these cultivars to recover from herbicide induced root injury. The most severe herbicide damage in Penncross bentgrass resulted from metribuzin [4-amino-6-tert-buty1-3-(methylthio)-as-triazin- 5(4H)-one], napropamide [2-(a-naphthoxy)-N,N-diethylpropionamide], and prosulfalin [N-[[4-(dipropylamino)-3,5- dinitrophenyl]sulfonyl]-S,S-dimethylsulfilimine] treatments which killed all of the plants. Effects on bentgrass were less severe from ethofumesate [(±)-2-ethoxy-2,3-dihydro-3,3-dimethyl-5-benzofuranyl methanesulfonate] and NC-20484, and slight with oxadiazon [2-tert-butyl- 4(2,4-dichloro-5-isopropoxyphenyl)-δ²-1,3,4-oxadiazolin-5- one]. The most extensive damage to Tifgreen bermudagrass was from ethofumesate, metribuzin, napropamide, and prosulfalin. NC-20484 caused severe root cellular abnormalities, but no apparent foliar damage. Oxadiazon effects on bermudagrass were very slight.

Recommended Citation

Harper, Cynthia A., "Root histology of two turfgrass cultivars in response to selected herbicides. " Master's Thesis, University of Tennessee, 1982.
https://trace.tennessee.edu/utk_gradthes/7624