2014 Black Dot Foliar Fungicides (200 Series)
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1 2014 Black Dot Foliar Fungicides (200 Series) Location: Inkster, ND Plot design: 4 rows X 30 feet X 4 reps; RCBD All 4 rows were sprayed; foliar disease data was taken from the center 2 rows. Planting date: June 3, 2014 Row width: 36 inches Seed spacing: 14 inches 50% Emergence: June 25 Fertilizer: Broadcast: 61#N, 206#K, 30#S, 1.5#B; May 17 Starter: 29#N, 100#P; June 3 Herbicide: Prowl (2 pts/a) + Sencor (0.5 lb/a) + Matrix (1.5 oz/a); June 16 Insecticide: (8.7 oz/a); IF at plant Coragen (5 oz/a); July 28 Asana (9 oz/a); August 8 BlackHawk (3.3 oz/a); August 27 Objective: To determine the efficacy of standard fungicide chemistries and fungicide programs for the control of black dot caused by Colletotrichum coccodes. Black dot inoculation method: Five C. coccodes isolates representing vegetative compatibility groups 2, and 6 were grown for 5 to 6 weeks on CV-8 agar medium. Microsclerotia were released from the agar using an electric blender and the microsclerotial suspension was adjusted to a concentration of 1.0 x 10 5 microsclerotia / ml in distilled water. The suspension was applied at a rate of 7.23 ml/row foot to the outside two rows of each plot on the evening of July 22 using custom ATV spray equipment. Foliar application dates: Foliar application method: In-furrow application method: July 17, 25, August 1, 5, 14, 20, 28, Sept. 5, 11, 15 Fungicides were applied using a converted ATV (55 psi; 61 gpa; 11005XR nozzles). In-furrow treatments applied using a planter-mounted CO 2 sprayer with single nozzle directed at seed piece (6501 tips, 8 GPA). Vinekill: Hard Frost; October 4 Harvest: October 6, 8 Grade: December 3, 5 (58 DAH)
2 2014 Black Dot Foliar Fungicides - Inkster Series 200 Foliar Disease * 213 is confidential* Treatment Rate Schedule Interval Foliar Disease (% Severity) 7/16 7/23 7/29 8/5 8/12 8/19 8/26 9/2 9/9 9/16 9/23 AUDPC RAUDPC Yield (cwt/a) 201 Non-treated / Non-inoculated Non-treated / inoculated Priaxor 6.7 fl oz / a In-furrow Priaxor 8.0 fl oz / a In-furrow Priaxor 6.7 fl oz / a 1 7 day 206 Reason fl oz / a + 1,3 7 day Emesto Silver fl oz / cwt + Seed Serenade Soil 2.0 qt / a In-furrow Reason fl oz / a + 1,3 7 day 208 Emesto Silver fl oz / cwt + Seed In-furrow 2 lbs / a 2,4,6,8, Emesto Silver fl oz / cwt + Seed Quadris fl oz / 1000 row ft + In-furrow 2 lbs / a 2,4,6,8,10
3 210 Emesto Silver fl oz / cwt + Seed lbs / a 2,4,6,8, Emesto Silver fl oz / cwt + Seed Serenade Soil qt / a + In-furrow 2 lbs / a 2,4,6,8, Emesto Silver fl oz / cwt + Seed Quadris fl oz / 1000 row ft + 2 lbs / a 2,4,6,8, Confidential 214 Headline 9 fl oz / a 1 7 day LSD P = 0.05 NS
4 2014 Black Dot Foliar Fungicides - Inkster Series 200 Stem Incidence * 213 is confidential* Treatment Rate Schedule Interval Black Dot (% Stem Incidence) 8/12 8/19 8/26 9/2 9/9 9/16 9/23 AUDPC RAUDPC Yield (cwt/a) 201 Non-treated / Non-inoculated Non-treated / inoculated Priaxor 6.7 fl oz / a In-furrow Priaxor 8.0 fl oz / a In-furrow Priaxor 6.7 fl oz / a 1 7 day 206 Reason fl oz / a + 1,3 7 day Emesto Silver fl oz / cwt + Seed Serenade Soil 2.0 qt / a In-furrow Reason fl oz / a + 1,3 7 day 208 Emesto Silver fl oz / cwt + Seed In-furrow 2 lbs / a 2,4,6,8, Emesto Silver fl oz / cwt + Seed Quadris fl oz / 1000 row ft + In-furrow 2 lbs / a 2,4,6,8,10
5 210 Emesto Silver fl oz / cwt + Seed lbs / a 2,4,6,8, Emesto Silver fl oz / cwt + Seed Serenade Soil qt / a + In-furrow 2 lbs / a 2,4,6,8, Emesto Silver fl oz / cwt + Seed Quadris fl oz / 1000 row ft + 2 lbs / a 2,4,6,8, Confidential 214 Headline 9 fl oz / a 1 7 day LSD P = 0.05 NS NS
6 2014 Black Dot Foliar Fungicides - Inkster Series 200 * 213 is confidential* Treatment Rate Schedule Interval Emergence (%) 6/26 7/1 7/8 201 Non-treated / Non-inoculated Non-treated / inoculated Priaxor 6.7 fl oz / a In-furrow Priaxor 8.0 fl oz / a In-furrow Priaxor 6.7 fl oz / a 1 7 day 206 Reason fl oz / a + 1,3 7 day Emesto Silver fl oz / cwt + Seed Serenade Soil 2.0 qt / a In-furrow Reason fl oz / a + 1,3 7 day
7 208 Emesto Silver fl oz / cwt + Seed In-furrow 2 lbs / a 2,4,6,8, Emesto Silver fl oz / cwt + Seed Quadris fl oz / 1000 row ft + In-furrow 2 lbs / a 2,4,6,8, Emesto Silver fl oz / cwt + Seed lbs / a 2,4,6,8, Emesto Silver fl oz / cwt + Seed Serenade Soil qt / a + In-furrow 2 lbs / a 2,4,6,8, Emesto Silver fl oz / cwt + Seed Quadris fl oz / 1000 row ft + 2 lbs / a 2,4,6,8, Confidential 214 Headline 9 fl oz / a 1 7 day LSD P = NS
8 Black Dot Foliar Fungicides - Inkster Series 200 Rep IV N Rep III Rep II Rep I Tower /22/2017 8:06 AM
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