Full TGIF Record # 33699
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Gaitan-Gaitan, F.; Dotray, P. A.; McKenney, C. B.; Henniger, C. G.; Auld, D. L.
Author Affiliation:Texas Tech University; Texas Agricultural Experiment Station; Texas Agricultural Extension Service, Lubbock, TX
Title:Herbicide efficacy and tolerance in buffalograss
Meeting Info.:Dallas, TX: January 17-19, 1994
Source:Southern Weed Science Society Proceedings. Vol. 47, 1994, p. 27.
Publishing Information:Champaign, IL: Southern Weed Science Society.
# of Pages:1
Keywords:TIC Keywords: Bouteloua dactyloides; Preemergence herbicides; Postemergence herbicides; Chemical weed control; Herbicide application; Plant protection; Herbicide resistance
Cultivar Names:Comanche; Texoka
Abstract/Contents:"Use of drought resistant buffalograss [Buchloe dactyloides (Nutt) Engel.] has increased due to its inherent low-input, low-maintenance management and well-adaptation to semi-arid environments of the Texas Southern High Plains. Use of seed to establish turfs is becoming very popular, creating a need to determine optimal cultural and weed management practices. Experiments were conducted in 1993 to evaluate the efficacy of pre- and postemergence herbicides and to determine herbicide tolerance in buffalograss. Experiments were conducted on an Amarillo sandy loam soil located at the Texas Tech Erskine Research facility in Lubbock, Texas. The postemergence study was a 2x4 factorial (two cultivars, 'Comanche' and 'Texoka,' by four irrigation rates) design with a split-plot arrangement of four herbicide treatments (metsulfuron at 0.015 lb/A; imazaquin at 0.5 lb/A; and 2,4-D at 0.5 lb/A). The preemergence study was a completely randomized block design with four replications and 14 herbicide treatments. The herbicides included metsulfuron at 0.06 lb/A, DPX-PE350 at 0.06 lb/A, propazine at 1.5 lb/A, quinclorac at 0.5 lb/A, cyanazine at 1.5 lb/A, oryzalin at 1.5 lb/A, pendimethalin at 1.5 lb/A, atrazine at 2.0 lb/A, metribuzin at 1.01 b/A, linuron at 1.0 lb/A, alachlor at 3.0 lb/A, metolachlor at 3.0 lb/A, and dicamba at 0.25 lb/A. Evaluation of postemergence herbicide efficacy was based on control of pigweed (Amaranthus sp.) and prostrate spurge (Euphorbia humistata). Tolerance of buffalograss was based on plant injury and turf quality. evaluation of preemergence herbicides was based on the qualitative tolerance response of buffalograss because of poor stand establishment due to hate planting. In the postemergence study metsulfuron provided consistent control of pigweed and prostrate spurge. Imazaquin and 2,4-D were less effective at controlling pigweed, and imazaquin was least effective at controlling prostrate spurge. 'Comanche' and 'Texoka' buffalograss were tolerant to all three herbicides with a minimum impact on turf quality. Poor stand establishment in the preemergence study made it impossible to quantify the effect of each herbicide. Therefore, herbicidal effects on buffalograss were observed as a preliminary evaluation. Among the 13 preemergence herbicides, DPX-PE350, propazine, and cyanazine, did not injure buffalograss seedlings, and metolachlor, dicamba, and metribuzin only slightly injured the buffalograss. This information will be used on future studies to determine optimal preemergence herbicide rates and the possible use of other herbicides for weed control in buffalograss."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Gaitan-Gaitan, F., P. A. Dotray, C. B. McKenney, C. G. Henniger, and D. L. Auld. 1994. Herbicide efficacy and tolerance in buffalograss. South. Weed Sci. Soc. Proc. 47:p. 27.
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