SOYBEAN – FOLIAR DISEASES Disease Aerial Blight Fungicide azoxystrobin Quilt** azoxystrobin + propiconazole Headline** Quilt Xcel** Affiance** Aproach Prima** Stratego** Stratego YlD** Priaxor** 11 + 3 azoxystrobin + propiconazole 11 + 3 azoxystrobin + tetraconazole picoxystrobin + cyproconazole trifloxystrobin + propiconazole trifloxystrobin + prothioconazole pyraclostrobin + fluxapyroxad topsin 4.5 l thiophanate-methyl topsin 70 WDG Alto topguard Proline 480 SC 11 azoxystrobin + difenoconazole thiophanate-methyl thiophanate-Methyl 85 WDG 11 pyraclostrobin Cercobin tilt, or Bumper, or several generics 41.8 eC thiophanate-methyl 11 + 3 11 + 3 11 + 3 11 + 3 11 + 3 11 + 7 8 - 14 fl oz 14 - 20.5 fl oz 5 - 6.8 fl oz 4 - 8 fl oz 0.4 - 0.8 lb 0.5 - 1 lb 4 - 5.5 fl oz 7 - 14 fl oz 10 - 30 fl oz Headline GeM topsin XtR Quadris Xtra Quadris top SB 11 11 11 pyraclostrobin 11 trifloxystrobin thiophanate-methyl + tebuconazole azoxystrobin + cyproconazole azoxystrobin + difenoconazole 56 21 21 30 14 21 2.5 - 3 fl oz 7 3 fluoxastrobin 21 See label penthiopyrad picoxystrobin 21 4 - 6 fl oz Vertisan evito 480 SC or Aftershock 30 4 - 5 fl oz 6 - 15.5 fl oz 2 - 5.7 fl oz 6 - 12 fl oz 6 - 12 fl oz 21 See label 14 14 21 21 11 + 3 5 - 6.8 fl oz 30 11 + 3 8 - 14 fl oz General seed quality: An application between R2 and late R5 has been used by seed producers for general seed quality protection. 30 3 - 3.5 fl oz 20 fl oz Frogeye leaf spot: Apply in presence of disease for maximum control on susceptible varieties. Applications between R3 and R4 growth stages have been effective when conditions favor disease on susceptible variety. A strobilurin fungicide (FRAC Code 11) alone will not adequately control strains for frogeye leaf spot that are resistant to this class of fungicides. 14 11 1+3 Comments Apply at first sign of disease for maximum control. Applications after significant disease development will result in poor control. use the high rates under conditions favorable for severe disease development, dense plant canopies or when highly susceptible varieties are planted. 21 4 - 4.6 fl oz 3 - 4 fl oz Aproach 2.08 SC 14 10 fl oz 3 azoxystrobin See label 14 fl oz tebuconazole Quadris 2.08 SC or equation 2.08 SC 21 10.5 - 14 fl oz 21 3 tetraconazole 14 10 - 20 fl oz 3 prothioconazole 21 1 3 propiconazole 6 - 12 fl oz 21 3 flutriafol 14 10.9 - 21.8 fl oz 1 cyproconazole 6 - 15.5 fl oz 1 1 thiophanate-methyl Days to Harvest Rate/Acre tebuconazole (several generics 3.6 F) Domark 230 Me (continued) FRAC Code* Active Ingredient Quadris 2.08 SC or equation 2.08 SC Quadris top SB** Anthracnose, Frogeye leaf spot, Pod and stem blight, Cercospora leaf blight, and general seed quality diseases Travis Faske and Terry Spurlock 21 14 MP154 • ARkAnSAS PlAnt DiSeASe ContRol PRoDuCtS GuiDe • 2015 Disease Anthracnose, Frogeye leaf spot, Pod and stem blight, Cercospora leaf blight, and general seed quality diseases (cont.) Soybean Rust SOYBEAN – FOLIAR DISEASES (continued) Quilt Active Ingredient azoxystrobin + propiconazole FRAC Code* 11 + 3 14 - 20.5 fl oz Affiance azoxystrobin + tetraconazole 11 + 3 10 - 14 fl oz Fungicide Quilt Xcel Fortix Aproach Prima Stratego Stratego YlD Priaxor Alto topguard tilt, or Bumper, or several generics 41.8 eC Proline 480 SC tebuconazole (several generics 3.6 F) Domark 230 Me Vertisan Quadris 2.08 SC evito 480 SC or Aftershock Headline topsin XtR Quadris Xtra Quilt Quilt Xcel Affiance Aproach Prima Stratego Stratego YlD Priaxor chlorothalonil (several generics) azoxystrobin + propiconazole fluoxastrobin + flutriafol picoxystrobin + cyproconazole trifloxystrobin + propiconazole trifloxystrobin + prothioconazole pyraclostrobin + fluxapyroxad cyproconazole flutriafol 11 + 3 11 + 3 11 + 3 11 + 3 11 + 3 11 + 7 3 3 propiconazole 3 prothioconazole 3 tebuconazole 3 tetraconazole 3 penthiopyrad 7 azoxystrobin 11 fluoxastrobin 11 pyraclostrobin thiophanate-methyl + tebuconazole 11 trifloxystrobin + prothioconazole pyraclostribin + fluxapyroxad chlorothalonil 10 fl oz 4 - 4.6 fl oz 4 - 8 fl oz 4 - 5.5 fl oz 7 - 14 fl oz 11 + 3 11 + 3 11 + 3 11 + 3 11 + 7 M5 Days to Harvest 21 See label 30 30 21 21 21 30 14 See label 3 - 4 fl oz 21 2.5 - 3 fl oz 4 - 5 fl oz 10 - 30 fl oz 6 - 15.5 fl oz 2 - 5.7 fl oz 6 - 12 fl oz 5 - 6.8 fl oz 21 14 14 30 21 21 30 21 See label 5 - 6.8 fl oz 30 10 fl oz 4 - 4.6 fl oz 4 - 8 fl oz See label When soybean rust is present and conditions favor disease development, use high rates combined with additional triazole for improved rust contol. See label 14 - 21 fl oz 10 - 14 fl oz Comments 14 4 - 6 fl oz 14 - 20.5 fl oz 11 + 3 trifloxystrobin + propiconazole 5 - 6.8 fl oz 11 + 3 azoxystrobin + propiconazole picoxystrobin + cyproconazole 5 - 6 fl oz 20 fl oz 11 + 3 azoxystrobin + tetraconazole 10.5 - 14 fl oz 1+3 azoxystrobin + cyproconazole azoxystrobin + propiconazole Rate/Acre 14 21 21 21 42 * FRAC Code – Fungicides with the same FRAC Code have the same mode of action. See http://www.frac.info/ for an explanation of the FRAC Codes. Rotation of fungicides with different FRAC Codes could minimize the development of fungicide-resistant strains. ** use for control of aerial blight is based on other states’ data. NOTE: there is little or no recent information on the economic value of foliar fungicides on today’s soybean varieties in Arkansas. An economic return is more likely on high-value (seed) beans or fields with high yield potential (>40 bu/A) or high-yielding irrigated fields with a history of disease problems (under pivots that encourage foliar diseases or in rotations that encourage aerial blight). 57 MP154 • ARkAnSAS PlAnt DiSeASe ContRol PRoDuCtS GuiDe • 2015
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