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| Publication Type:
| Report |
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| Author(s): | Witt, William W.;
Martin, James R.;
Bullock, Robert M. |
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| Author Affiliation: | University of Kentucky, Lexington |
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| Title: | Comparison of foliar herbicides and oil additives for annual grass control |
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| Section: | Physiology, edaphic factors and control of specific weeds
Other records with the "Physiology, edaphic factors and control of specific weeds" Section
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| Meeting Info.: | Winnipeg, Manitoba, Canada: December 4-6, 1984 |
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| Source: | Proceedings: North CentralWeed Control Conference. Vol. 39, 1984, p. 84. |
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| Publishing Information: | [Urbana, Illinois: Department of Agronomy, University of Illinois] |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Comparisons; Herbicides; Annual weeds; Petroleum; Weed control; Herbicide rates; Clopropoxydim
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| Abstract/Contents: | "Field experiments were conducted to compare several foliarly applied herbicides for control of giant foxtail (Setaria faberi), fall panicum (Panucum dichotiflorum), smooth crabgrass (Digitoria ischaemum), and johnsongrass (Sorghum halepense). Fluazifop at .14 and .21 kg/ha, PP-005 at .10 and .14 kg/ha, haloxyfop at .14 and .21 kg/ha, sethoxydim at .22 and .33 kg/ha, clopropoxydim at .22 and .33 kg/ha, DPX-Y-6202 at .07 and .14 and .14 kg/ha, SC-1084 at .28 and .56 kg/ha, and fenoxaprop at .11 and .27 kg/ha were applied with either soybean oil concentrate or a petroleum crop oil concentrate at 1% v/v. These treatments were applied to 10 and 15 cm giant foxtail, smooth crabgrass, and fall panicum, and 20 anf 40 johnsongrass. All treatments were applied at 234 l/ha at 207 kpa with flat fan nozzles. Soybean and petroleum oil concentrates provided equal control with all herbicides and rates of all four species. With giant foxtail control, no significant differences were found between herbicides, rates, or growth stages of application. Smooth crabgrass control, when averaged across both rates, oils, and growth stages, 90% or greater was obatined with haloxyfop (95%), sethoxydim (90%), and clopropoxydim (90%). Poorest control was obtained with fluazifop (48%). The higher rate of each herbicide provided significantly greater control than the lower rates. There was a significant herbicide by growth stage interaction in which the smaller stage of growth was more easily controlled with fluazifop. Greater than 90% control of fall panicum, when averaged across rates, oils, and growth stages, was obtained with sethoxydim (99%), haloxyfop (99%), and PP-005 (95%). Poorest control was with DPX-Y-6202 (53%). Similar to results obtained with smooth crabgrass, greater control was obtained with the higher rates (91%) compared to the lower rates (81%) when averaged across herbicides, oils, and growth stages. Johnsongrass control was above 88% for all herbicides when averaged over oils, rates and stages of applications. As with other species, greater control was obtained with the higher rate (93%) compared to the lower rate (90%). Significantly greater control (95%) was obatined when 40 cm johnsongrass was treated than with 20 cm plants (89%). This response had been observed in previous experiments." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Witt, W. W., J. R. Martin, and R. M. Bullock. 1984. Comparison of foliar herbicides and oil additives for annual grass control. Res. Rep. North Cent. Weed Control Conf. 39:p. 84. |
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MSU catalog number: SB 610 .N6 |
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