Flufenacet and Metribuzin Combinations for Weed Control and Corn (Zea mays) Tolerance1

Field studies were conducted in 1999 and 2000 at seven locations in south Texas to evaluate flufenacet plus metribuzin for weed control and corn tolerance. Texas panicum control with flufenacet plus metribuzin was variable with less than 70% control in 1999 and greater than 75% control in 2000. Palmer amaranth and pitted morningglory control ranged from 41 to 100%. Corn stunting (4 to 13%) was noted in soils with greater than 75% sand. Corn yields with flufenacet and metribuzin combinations were increased up to 19% over the untreated check where stunting was not observed. Nomenclature: Flufenacet; metribuzin; Palmer amaranth, Amaranthus palmeri S. Wats. #3 AMAPA; pitted morningglory, Ipomoea lacunosa (L.) # IPOLA; Texas panicum, Panicum texanum Buckl. # PANTE; corn, Zea mays L. ‘AS986’, ‘Pioneer 3223’, ‘Pioneer 32K61’, ‘DK-668’. Additional index words: Corn tolerance, ivyleaf morningglory, weed management. Abbreviations: POST, postemergence; PRE, preemergence.

[1]  Robert L. Zimdahl,et al.  Weed-Crop Competition: A Review , 2004 .

[2]  B. Mullinix,et al.  Annual Grass Control with Preplant Incorporated and Preemergence Applications of Ethalfluralin and Pendimethalin in PeanutArachis hypogaea1 , 2001, Weed Technology.

[3]  W. G. Johnson,et al.  Efficacy and Economics of Weed Management in Glyphosate-Resistant Corn (Zea mays)1 , 2000 .

[4]  J. C. Holloway,et al.  Evaluation of Soil-Applied Herbicides in Sequential Programs with CGA-277476 in Soybean (Glycine max) , 1999, Weed Technology.

[5]  S. Vizantinopoulos,et al.  Weed Management of Amaranthus spp. in Corn (Zea mays) , 1998, Weed Technology.

[6]  H. Hancock,et al.  Sulfentrazone adsorption and mobility as affected by soil and pH , 1997, Weed Science.

[7]  C. Swanton,et al.  Influence of barnyardgrass (Echinochloa crus-galli) time of emergence and density on corn (Zea mays) , 1997, Weed Science.

[8]  S. Swinton,et al.  Giant foxtail (Setaria faberi) interference in nonirrigated corn (Zea mays) , 1997, Weed Science.

[9]  J. Carey,et al.  Timing of Total Postemergence Herbicide Applications to Maximize Weed Control and Corn (Zea mays) Yield , 1995, Weed Technology.

[10]  W. E. Pound,et al.  Pendimethalin Efficacy and Dissipation in Turfgrass as Influenced by Rainfall Incorporation , 1994, Weed Science.

[11]  Clarence J. Swanton,et al.  Interference of Redroot Pigweed (Amaranthus retroflexus) in Corn (Zea mays) , 1994, Weed Science.

[12]  J. Carey,et al.  Timing of Chlorimuron and Imazaquin Application for Weed Control in No-Till Soybeans (Glycine max) , 1991, Weed Science.

[13]  L. Jordan,et al.  Effect of Incorporation and Method of Irrigation on Preemergence Herbicides , 1963 .