Cooperator/Landowner Cooperator: Mel Grove Organization: ISK Biosciences City: Houston State/Prov: TX

Transcription

1 (ROAD 6-04) Site Description Page 1 of 5 University of GA Coop Ext Service Trial ID: Road 6-04 Location: Griffin, GA Study Director: Bill Nutt Investigator: Tim R Murphy General Trial Information Study Director: Bill Nutt Title: ARC I Affiliation: UGA-CAES bnutt@griffin.uga.edu Investigator: Tim R Murphy Title: Weed Scientist Affiliation: UGA-CAES tmurphy@uga.edu Trial Location City: Eatonton Trial Status: ONE-YEAR/FINAL State/Prov.: GA Initiation Date: Planned Completion Date: Objectives: Evaluate three rates of Flazasulfuron alone for general weed control in a roadside application. Cooperator/Landowner Cooperator: Mel Grove Organization: ISK Biosciences City: Houston State/Prov: TX Pest Description Pest 1 Type: W Code: EUPCP Eupatorium capillifolium Common Name: dogfennel Pest 2 Type: W Code: GNASS Gnaphalium species Common Name: Cudweed Pest 3 Type: W Code: OXAST Oxalis stricta Common Name: Woodsorrel, Yellow Pest 4 Type: W Code: ANOVI Andropogon virginicus Common Name: Broomsedge Pest 5 Type: W Code: DIGSP Digitaria ciliaris Common Name: Crabgrass, Southern Site and Design Plot Width, Unit: 10 FT Site Type: Simulated roadside Plot Length, Unit: 20 FT Replications: 4 Study Design: Randomized Complete Block Trial Initiation Comments: Test size 75 ft. wide x 100 ft. deep. Spray 10 ft. on 15 ft. centers. 20 ft. alley. Site Located in fallow field. No roadside grass present. Field Prep./Maintenance: None: Non-irrigated fallow site with no bermudagrass or tall fescue present. Application Description A Application Date: Time of Day: 11:40 am Application Method: Broadcast Application Timing: Post Application Placement: Foliage Air Temperature, Unit: 83 F % Relative Humidity: 63 Wind Velocity, Unit: 5 mph Dew Presence (Y/N): N Soil Temperature, Unit: 85 F Soil Moisture: Poor % Cloud Cover: 75

2 (ROAD 6-04) Site Description Page 2 of 5 Pest Stage At Each Application A Pest 1 Code, EUPCP Stage Majority, Percent: Active Growth Diameter, Unit: 6 16 in Height Average, Unit: 24 in Height Minimum, Maximum: 8 in 30 in Density, Unit: 30 % Pest 2 Code,: GNASS Stage Majority, Percent: Mature Seed heads* Diameter, Unit: 6 in Height, Unit: 15 in Density, Unit: 50 % Weed Density Ratings in Untreated Check Plots EUPCP, GNASS EUPCP, ANOVI, EUPCP DIGSP ANOVI, EUPCP DIGSP Trial Comments : Flazasulfuron at 3.0 and 6.0 oz/acre slightly suppressed growth of Broomsedge, ANOVI.

3 (ROAD 6-04) AOV Means Table Page 3 of 5 Pest Code EUPCP EUPCP EUPCP Name Dogfennel Dogfennel Dogfennel Rating Date Trt-Eval Interval 14 DA-A 29 DA-A 43 DA-A 1 Untreated Check 0 e 0 e 0 d 2 Flazasulfuron 25 WG 1.5 oz wt/a lb ai/a Post A 24 c 41 c 39 c 3 Flazasulfuron 25 WG 3.0 oz wt/a lb ai/a Post A 33 b 51 b 54 b 4 Flazasulfuron 25 WG 6.0 oz wt/a lb ai/a Post A 38 a 64 a 74 a 5 Plateau 2 SC 3.0 oz/a lb ai/a Post A 15 d 21 d 34 c LSD (P=.05) Standard Deviation CV Pest Code EUPCP GNASS GNASS Name Dogfennel Cudweed Cudweed Rating Date Trt-Eval Interval 57 DA-A 14 DA-A 29 DA-A 1 Untreated Check 0 d 0 a 0 a 2 Flazasulfuron 25 WG 1.5 oz wt/a lb ai/a Post A 11 c 0 a 0 a 3 Flazasulfuron 25 WG 3.0 oz wt/a lb ai/a Post A 40 b 0 a 0 a 4 Flazasulfuron 25 WG 6.0 oz wt/a lb ai/a Post A 68 a 0 a 0 a 5 Plateau 2 SC 3.0 oz/a lb ai/a Post A 5 cd 0 a 0 a LSD (P=.05) Standard Deviation CV

4 (ROAD 6-04) AOV Means Table Page 4 of 5 Pest Code GNASS GNASS OXAST Yellow Name Cudweed Cudweed Wood Sorrell Trt-Eval Interval 43 DA-A 57 DA-A 29 DA-A 1 Untreated Check 0 a 0 a 0 c 2 Flazasulfuron 25 WG 1.5 oz wt/a lb ai/a Post A 0 a 0 a 40 b 3 Flazasulfuron 25 WG 3.0 oz wt/a lb ai/a Post A 0 a 0 a 51 b 4 Flazasulfuron 25 WG 6.0 oz wt/a lb ai/a Post A 0 a 0 a 71 a 5 Plateau 2 SC 3.0 oz/a lb ai/a Post A 0 a 0 a 44 b LSD (P=.05) Standard Deviation CV Pest Code OXAST OXAST Yellow Yellow Name Wood Sorrell Wood Sorrell Rating Data Type Control Control Trt-Eval Interval 43 DA-A 57 DA-A 1 Untreated Check 0 d 0 c 2 Flazasulfuron 25 WG 1.5 oz wt/a lb ai/a Post A 25 cd 19 bc 3 Flazasulfuron 25 WG 3.0 oz wt/a lb ai/a Post A 61 ab 40 ab 4 Flazasulfuron 25 WG 6.0 oz wt/a lb ai/a Post A 83 a 61 a 5 Plateau 2 SC 3.0 oz/a lb ai/a Post A 46 bc 43 ab LSD (P=.05) Standard Deviation CV

5 (ROAD 6-04) AOV Means Table Page 5 of 5 Pest Code DIGSP DIGSP Southern Southern Name Crabgrass Crabgrass Part Rated Rating Data Type Control Control Trt-Eval Interval 43 DA-A 57 DA-A 1 Untreated Check 0 b 0 b 2 Flazasulfuron 25 WG 1.5 oz wt/a lb ai/a Post A 94 a 80 a 3 Flazasulfuron 25 WG 3.0 oz wt/a lb ai/a Post A 100 a 99 a 4 Flazasulfuron 25 WG 6.0 oz wt/a lb ai/a Post A 100 a 100 a 5 Plateau 2 SC 3.0 oz/a lb ai/a Post A 98 a 80 a LSD (P=.05) Standard Deviation CV Pest Code ANOVI ANOVI Name Broomsedge Broomsedge Rating Data Type Suppressn Suppressn Trt-Eval Interval 43 DA-A 43 DA-A 1 Untreated Check 0 b 0 b 2 Flazasulfuron 25 WG 1.5 oz wt/a lb ai/a Post A 3 b 1 b 3 Flazasulfuron 25 WG 3.0 oz wt/a lb ai/a Post A 11 a 10 a 4 Flazasulfuron 25 WG 6.0 oz wt/a lb ai/a Post A 16 a 14 a 5 Plateau 2 SC 3.0 oz/a lb ai/a Post A 0 b 0 b LSD (P=.05) Standard Deviation CV Application Description: Bermudagrass greenup. Means followed by same letter do not significantly differ (P=.05, Duncan's New MRT)