University of Georgia, Cooperative Extension Service

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1 St. Augustinegrass Cultivar Tolerance to (sulfosulfuron) Herbicide Trial ID: HerbTol Study Director: Bennett & Evans Location: Griffin Investigator: Clint Waltz General Trial Information Investigator: Clint Waltz Title: Asst. Professor Affiliation: C&SS - UGA Postal Code: CWaltz@UGA.edu Trial Location City: Griffin Trial Status: ESTABLISHED State/Prov.: Georgia Trial Reliability: Excellent Postal Code: Initiation Date: 20/Jul/2006 Country: USA Planned Completion Date: 20/Sep/2006 Crop Description Crop 1: STPSE Stenotaphrum secundatum St. Augustinegrass Variety: Multiple Description: Established BBCH Scale: BGRM Planting Date: 16/Jul/2003 Planting Method: TRANSPLANTED - HAND Rate, Unit: Depth, Unit: Perennial Age, Unit: Row Spacing, Unit: Spacing Within Row, Unit: Seed Bed: Soil Temperature, Unit: Soil Moisture: Emergence Date: Site and Design Plot Width, Unit: 3 FT Site Type: TURF - RESEARCH Plot Length, Unit: 8 FT Tillage Type: Home Lawn Replications: 3 Study Design: Split-Plot Soil Description % Sand: 64 % OM: Texture: Sandy Loam % Silt: 22 ph: 6.0 Soil Name: % Clay: 14 CEC: Fert. Level: 5 lbs N/1000ft2/yr Additional Measured Elements Element Quantity Unit Calcium 1009 lbs/acre Potassium lbs/acre Magnesium lbs/acre Manganese lbs/acre Phosphorous lbs/acre Zinc lbs/acre Application Description A Application Date: 20/Jul/2006 Time of Day: 2:21pm Application Method: Broadcast Application Timing: Post Application Placement: Topical Applied By: CB Air Temperature, Unit: 95 F % Relative Humidity: 55 Wind Velocity, Unit: Dew Presence (Y/N): N Water Hardness: Soil Temperature, Unit: 90 F Soil Moisture: ADEQUATE % Cloud Cover: 70 Date By Notes 10/Aug/2006 FCW Although no data was collected on weeks 1 and 2 after treatment, there was no observable injury 10/Aug/2006 FCW 10/Aug/2006 FCW At 3 weeks after treatment, growth suppression was observed. Normal senescence of seedheads was observed in all treated plots, reducing color and overall appearance. Turfgrass height measurements were made with TURFCHEK II height meter

2 St. Augustinegrass Cultivar Tolerance to (sulfosulfuron) Herbicide Trial ID: HerbTol Study Director: Bennett & Evans Location: Griffin Investigator: Clint Waltz Crop Code STPSE STPSE STPSE STPSE STPSE STPSE STPSE STPSE Rating Date 2/Aug/ /Aug/2006 1/Sep/ /Sep/ /Aug/ /Aug/2006 1/Sep/ /Sep/2006 Rating Data Type Injury Injury Injury Injury Color Color Color Color Rating Unit % % % % Assessed By KE KE KE KE KE KE KE KE Days After Last Applic Trt-Eval Interval 13 DA-A 29 DA-A 43 DA-A 62 DA-A 21 DA-A 29 DA-A 43 DA-A 62 DA-A 1 Raleigh 0 b 0 b 0 b 0 a 7.3 a-d 7.0 a-e 6.8 cde 7.2 abc 2 Raleigh 0 b 2 ab 1 ab 0 a 7.0 c-f 7.0 a-e 7.2 abc 7.3 ab 3 Raleigh 0 b 0 b 0 b 0 a 7.0 c-f 6.7 c-f 6.8 cde 7.0 bcd 4 Raleigh 0 b 3 a 1 ab 0 a 6.7 e-h 6.5 def 6.7 de 6.8 cd 5 Floratam 0 b 0 b 0 b 0 a 6.8 d-g 6.7 c-f 6.5 e 6.8 cd 6 Floratam 0 b 0 b 0 b 0 a 6.5 f-i 6.7 c-f 6.5 e 7.0 bcd 7 Floratam 0 b 0 b 0 b 0 a 6.2 hi 6.7 c-f 6.7 de 6.8 cd 8 Floratam 0 b 0 b 0 b 0 a 6.0 ij 6.5 def 6.7 de 7.0 bcd 9 Delmar 0 b 0 b 0 b 0 a 7.8 a 7.3 abc 7.2 abc 7.0 bcd 10 Delmar 0 b 0 b 0 b 0 a 7.7 ab 7.7 a 7.0 bcd 7.2 abc 11 Delmar 0 b 0 b 0 b 0 a 7.2 b-e 7.3 abc 6.8 cde 7.0 bcd 12 Delmar 0 b 0 b 0 b 0 a 7.3 a-d 7.2 a-d 6.8 cde 7.3 ab 13 Mercedes 0 b 0 b 0 b 0 a 7.7 ab 7.3 abc 7.2 abc 7.3 ab 14 Mercedes 0 b 0 b 0 b 0 a 7.0 c-f 7.0 a-e 7.2 abc 7.3 ab 15 Mercedes 0 b 0 b 0 b 0 a 6.7 e-h 6.8 b-f 7.5 a 7.3 ab 16 Mercedes 0 b 0 b 0 b 0 a 6.7 e-h 6.5 def 7.3 ab 7.2 abc 17 MSA 31 0 b 0 b 0 b 0 a 7.5 abc 7.2 a-d 7.0 bcd 6.7 d 18 MSA 31 0 b 0 b 1 ab 0 a 7.3 a-d 7.3 abc 7.0 bcd 7.0 bcd 19 MSA 31 0 b 0 b 0 b 0 a 6.8 d-g 7.3 abc 6.8 cde 7.0 bcd

3 Crop Code STPSE STPSE STPSE STPSE STPSE STPSE STPSE STPSE Rating Date 2/Aug/ /Aug/2006 1/Sep/ /Sep/ /Aug/ /Aug/2006 1/Sep/ /Sep/2006 Rating Data Type Injury Injury Injury Injury Color Color Color Color Rating Unit % % % % Assessed By KE KE KE KE KE KE KE KE Days After Last Applic Trt-Eval Interval 13 DA-A 29 DA-A 43 DA-A 62 DA-A 21 DA-A 29 DA-A 43 DA-A 62 DA-A 20 MSA 31 0 b 0 b 0 b 0 a 7.0 c-f 7.2 a-d 7.2 abc 6.8 cd 21 MSA b 0 b 0 b 0 a 7.5 abc 7.5 ab 7.0 bcd 7.0 bcd 22 MSA b 0 b 0 b 0 a 6.7 e-h 7.0 a-e 7.2 abc 7.3 ab 23 MSA b 0 b 0 b 0 a 6.5 f-i 6.7 c-f 6.8 cde 7.2 abc 24 MSA b 3 a 1 a 0 a 6.5 f-i 6.3 ef 6.8 cde 7.0 bcd 25 Plametto 0 b 0 b 0 b 0 a 6.8 d-g 7.0 a-e 6.5 e 7.0 bcd 26 Palmetto 0 b 0 b 0 b 0 a 6.7 e-h 7.2 a-d 6.5 e 6.8 cd 27 Palmetto 0 b 0 b 0 b 0 a 6.3 ghi 6.5 def 6.7 de 6.8 cd 28 Palmetto 0 b 0 b 1 ab 0 a 6.3 ghi 6.3 ef 6.5 e 6.8 cd 29 Seville 0 b 0 b 0 b 0 a 7.7 ab 7.3 abc 7.0 bcd 7.0 bcd 30 Seville 0 b 2 ab 1 ab 0 a 7.0 c-f 7.2 a-d 7.0 bcd 7.2 abc 31 Seville 0 b 0 b 0 b 0 a 6.8 d-g 6.8 b-f 7.0 bcd 7.0 bcd 32 Seville 0 b 0 b 0 b 0 a 6.7 e-h 6.7 c-f 6.8 cde 7.0 bcd 33 Amerishade 0 b 0 b 0 b 0 a 6.0 ij 6.3 ef 5.0 f 6.0 e 34 Amerishade 2 a 0 b 0 b 0 a 6.2 hi 6.2 fg 5.3 f 6.2 e 35 Amerishade 2 a 0 b 0 b 0 a 5.5 j 5.5 gh 5.0 f 6.2 e 36 Amerishade 2 a 2 ab 0 b 0 a 5.5 j 5.3 h 5.0 f 6.2 e 37 Bitter Blue 0 b 0 b 0 b 0 a 7.3 a-d 7.0 a-e 6.7 de 7.0 bcd 38 Bitter Blue 0 b 0 b 0 b 0 a 6.8 d-g 6.8 b-f 6.8 cde 7.3 ab 39 Bitter Blue 0 b 0 b 0 b 0 a 6.5 f-i 6.5 def 6.8 cde 6.8 cd 40 Bitter Blue 0 b 0 b 0 b 0 a 6.3 ghi 6.3 ef 6.7 de 7.2 abc

4 Crop Code STPSE STPSE STPSE STPSE STPSE STPSE STPSE STPSE Rating Date 2/Aug/ /Aug/2006 1/Sep/ /Sep/ /Aug/ /Aug/2006 1/Sep/ /Sep/2006 Rating Data Type Injury Injury Injury Injury Color Color Color Color Rating Unit % % % % Assessed By KE KE KE KE KE KE KE KE Days After Last Applic Trt-Eval Interval 13 DA-A 29 DA-A 43 DA-A 62 DA-A 21 DA-A 29 DA-A 43 DA-A 62 DA-A 41 Floralawn 0 b 0 b 0 b 0 a 7.2 b-e 7.2 a-d 6.5 e 6.7 d 42 Floralawn 0 b 0 b 0 b 0 a 6.8 d-g 7.3 abc 6.5 e 6.8 cd 43 Floralawn 0 b 2 ab 1 ab 0 a 6.2 hi 7.0 a-e 6.7 de 6.7 d 44 Floralawn 0 b 0 b 0 b 0 a 6.3 ghi 6.7 c-f 6.7 de 6.8 cd 45 Woerner Classic 0 b 0 b 0 b 0 a 7.8 a 7.5 ab 7.2 abc 7.3 ab 46 Woerner Classic 0 b 0 b 0 b 0 a 7.5 abc 7.3 abc 7.2 abc 7.3 ab 47 Woerner Classic 0 b 0 b 0 b 0 a 6.8 d-g 6.8 b-f 7.3 ab 7.5 a 48 Woerner Classic 0 b 2 ab 0 b 0 a 6.8 d-g 6.5 def 7.2 abc 7.5 a 49 Winchester 0 b 0 b 0 b 0 a 7.5 abc 7.3 abc 6.7 de 7.0 bcd 50 Winchester 0 b 0 b 0 b 0 a 7.0 c-f 7.2 a-d 6.7 de 7.0 bcd 51 Winchester 0 b 0 b 0 b 0 a 6.5 f-i 6.7 c-f 6.7 de 7.0 bcd 52 Winchester 0 b 2 ab 1 ab 0 a 6.3 ghi 6.7 c-f 6.7 de 7.0 bcd LSD (P=.05) Standard Deviation CV Grand Mean Replicate F Replicate Prob(F) Treatment F Treatment Prob(F) Means followed by same letter do not significantly differ (P=.05, LSD) Mean separations are based on the complete error term.

5 Crop Code STPSE STPSE STPSE STPSE STPSE STPSE STPSE Rating Date 18/Aug/ /Aug/ /Aug/2006 1/Sep/ /Sep/ /Jul/2006 3/Aug/2006 Rating Data Type TQ HEIGHT HEIGHT HEIGHT HEIGHT DIT DIT Rating Unit 1-9 IN IN IN IN DGCI DGCI Assessed By KE KE KE KE KE SB SB Days After Last Applic Trt-Eval Interval 29 DA-A 21 DA-A 29 DA-A 43 DA-A 62 DA-A 7 DA-A 14 DA-A 1 Raleigh 7.0 abc 2.5 b-e 2.3 ab 2.2 abc 2.2 abc a-e abc 2 Raleigh 6.8 abc 2.2 d-g 2.2 ab 2.3 ab 2.3 ab a-d abc 3 Raleigh 6.5 bcd 2.3 c-f 1.8 bcd 2.2 abc 2.5 a b-h abc 4 Raleigh 6.5 bcd 2.1 d-h 1.8 bcd 2.2 abc 2.3 ab a-e abc 5 Floratam 6.8 abc 2.5 b-e 2.0 abc 2.3 ab 2.5 a abc ab 6 Floratam 6.8 abc 2.2 d-g 2.2 ab 2.3 ab 2.3 ab ab ab 7 Floratam 6.8 abc 2.0 e-h 2.2 ab 2.5 a 2.5 a c-h ab 8 Floratam 6.5 bcd 1.8 f-i 2.0 abc 2.2 abc 2.5 a a-d ab 9 Delmar 7.3 a 2.7 bcd 2.0 abc 2.0 bcd 2.2 abc a-h abc 10 Delmar 7.3 a 2.5 b-e 2.2 ab 2.5 a 2.5 a a-g abc 11 Delmar 7.0 abc 2.3 c-f 2.0 abc 2.2 abc 2.5 a gh abc 12 Delmar 6.7 abc 2.2 d-g 2.2 ab 2.5 a 2.3 ab e-h abc 13 Mercedes 7.3 a 2.5 b-e 2.0 abc 2.2 abc 2.3 ab a-e abc 14 Mercedes 7.3 a 2.7 bcd 2.0 abc 2.5 a 2.3 ab a-g abc 15 Mercedes 7.2 ab 2.2 d-g 2.0 abc 2.5 a 2.2 abc c-h abc 16 Mercedes 6.8 abc 2.0 e-h 2.0 abc 2.2 abc 2.2 abc c-h abc 17 MSA ab 2.5 b-e 2.2 ab 2.3 ab 2.5 a a-g abc 18 MSA a 2.3 c-f 2.5 a 2.5 a 2.3 ab c-h ab 19 MSA a 2.5 b-e 2.2 ab 2.5 a 2.5 a a-f abc 20 MSA ab 2.3 c-f 2.3 ab 2.5 a 2.3 ab a-h abc 21 MSA a 2.8 abc 2.2 ab 2.0 bcd 2.3 ab abc abc

6 Crop Code STPSE STPSE STPSE STPSE STPSE STPSE STPSE Rating Date 18/Aug/ /Aug/ /Aug/2006 1/Sep/ /Sep/ /Jul/2006 3/Aug/2006 Rating Data Type TQ HEIGHT HEIGHT HEIGHT HEIGHT DIT DIT Rating Unit 1-9 IN IN IN IN DGCI DGCI Assessed By KE KE KE KE KE SB SB Days After Last Applic Trt-Eval Interval 29 DA-A 21 DA-A 29 DA-A 43 DA-A 62 DA-A 7 DA-A 14 DA-A 22 MSA abc 2.5 b-e 2.2 ab 2.2 abc 2.3 ab a-d a 23 MSA abc 2.2 d-g 1.8 bcd 2.2 abc 2.3 ab fgh abc 24 MSA cde 2.2 d-g 1.8 bcd 2.0 bcd 2.2 abc c-h abc 25 Plametto 6.8 abc 2.5 b-e 2.3 ab 2.5 a 2.3 ab a-h abc 26 Palmetto 6.8 abc 2.2 d-g 2.3 ab 2.5 a 2.5 a a-h abc 27 Palmetto 6.3 cde 2.2 d-g 2.3 ab 2.3 ab 2.3 ab c-h abc 28 Palmetto 6.7 abc 2.2 d-g 2.0 abc 2.5 a 2.5 a c-h abc 29 Seville 7.2 ab 1.7 ghi 2.2 ab 1.8 cde 2.3 ab a-h abc 30 Seville 7.0 abc 2.0 e-h 2.2 ab 2.0 bcd 2.3 ab a-h ab 31 Seville 6.7 abc 1.7 ghi 2.0 abc 1.8 cde 2.2 abc a-g abc 32 Seville 6.8 abc 1.5 hi 2.2 ab 1.7 de 2.3 ab a-e abc 33 Amerishade 5.8 def 2.0 e-h 1.3 de 1.5 e 1.8 cd c-h cd 34 Amerishade 5.7 ef 1.8 f-i 1.5 cde 1.7 de 1.8 cd c-h abc 35 Amerishade 5.2 f 1.7 ghi 1.0 e 1.5 e 1.7 d a-h bcd 36 Amerishade 5.3 f 1.3 i 1.3 de 1.5 e 2.2 abc h d 37 Bitter Blue 7.0 abc 2.5 b-e 2.2 ab 2.2 abc 2.2 abc a-g abc 38 Bitter Blue 7.2 ab 2.0 e-h 2.2 ab 2.5 a 2.3 ab a-g ab 39 Bitter Blue 6.5 bcd 2.0 e-h 2.3 ab 2.3 ab 2.3 ab d-h abc 40 Bitter Blue 6.7 abc 1.8 f-i 2.2 ab 2.2 abc 2.0 bcd a-g abc 41 Floralawn 7.0 abc 3.3 a 2.5 a 2.3 ab 2.2 abc a ab 42 Floralawn 7.2 ab 3.0 ab 2.3 ab 2.2 abc 2.3 ab abc abc

7 Crop Code STPSE STPSE STPSE STPSE STPSE STPSE STPSE Rating Date 18/Aug/ /Aug/ /Aug/2006 1/Sep/ /Sep/ /Jul/2006 3/Aug/2006 Rating Data Type TQ HEIGHT HEIGHT HEIGHT HEIGHT DIT DIT Rating Unit 1-9 IN IN IN IN DGCI DGCI Assessed By KE KE KE KE KE SB SB Days After Last Applic Trt-Eval Interval 29 DA-A 21 DA-A 29 DA-A 43 DA-A 62 DA-A 7 DA-A 14 DA-A 43 Floralawn 6.8 abc 2.2 d-g 2.2 ab 2.3 ab 2.2 abc a-d abc 44 Floralawn 6.8 abc 2.0 e-h 2.2 ab 2.5 a 2.2 abc a-d ab 45 Woerner Classic 7.3 a 2.7 bcd 2.3 ab 2.2 abc 2.3 ab abc abc 46 Woerner Classic 7.3 a 2.0 e-h 2.0 abc 2.5 a 2.3 ab a-h abc 47 Woerner Classic 6.8 abc 2.2 d-g 2.0 abc 2.3 ab 2.3 ab c-h abc 48 Woerner Classic 6.8 abc 2.0 e-h 1.8 bcd 2.2 abc 2.2 abc a-f a-d 49 Winchester 7.3 a 2.3 c-f 2.5 a 2.2 abc 2.3 ab a-e abc 50 Winchester 7.2 ab 1.8 f-i 2.2 ab 2.2 abc 2.5 a a-f ab 51 Winchester 6.8 abc 1.8 f-i 2.2 ab 2.3 ab 2.3 ab a-e abc 52 Winchester 6.7 abc 2.0 e-h 2.0 abc 2.3 ab 2.2 abc abc abc LSD (P=.05) Standard Deviation CV Grand Mean Replicate F Replicate Prob(F) Treatment F Treatment Prob(F) Means followed by same letter do not significantly differ (P=.05, LSD) Mean separations are based on the complete error term.

8 Crop Code STPSE STPSE Rating Date 10/Aug/ /Aug/2006 Rating Data Type DIT DIT Rating Unit DGCI DGCI Assessed By SB SB Days After Last Applic Trt-Eval Interval 21 DA-A 39 DA-A 1 Raleigh a-h abc 2 Raleigh a-i abc 3 Raleigh a-j a-d 4 Raleigh c-j abc 5 Floratam a-g abc 6 Floratam a-g a 7 Floratam a-i a-e 8 Floratam a-j abc 9 Delmar a-f abc 10 Delmar a-j abc 11 Delmar a-j abc 12 Delmar a-j abc 13 Mercedes a-h ab 14 Mercedes ab ab 15 Mercedes a-j abc 16 Mercedes abc abc 17 MSA a-j abc 18 MSA a-j abc 19 MSA d-j abc 20 MSA a-h b-e 21 MSA a-h abc

9 Crop Code STPSE STPSE Rating Date 10/Aug/ /Aug/2006 Rating Data Type DIT DIT Rating Unit DGCI DGCI Assessed By SB SB Days After Last Applic Trt-Eval Interval 21 DA-A 39 DA-A 22 MSA f-j abc 23 MSA jk cde 24 MSA ijk a-e 25 Plametto a-j a-e 26 Palmetto a-j a-e 27 Palmetto e-j abc 28 Palmetto a-j a-e 29 Seville a-d a 30 Seville a-j a 31 Seville hij abc 32 Seville a-h a-d 33 Amerishade b-j cde 34 Amerishade d-j b-e 35 Amerishade l e 36 Amerishade kl a-d 37 Bitter Blue a-e a-d 38 Bitter Blue a-j abc 39 Bitter Blue g-j a-e 40 Bitter Blue a-j abc 41 Floralawn a-e abc 42 Floralawn a abc

10 Crop Code STPSE STPSE Rating Date 10/Aug/ /Aug/2006 Rating Data Type DIT DIT Rating Unit DGCI DGCI Assessed By SB SB Days After Last Applic Trt-Eval Interval 21 DA-A 39 DA-A 43 Floralawn a-j de 44 Floralawn a-j a 45 Woerner Classic a-h a-d 46 Woerner Classic a-h a-d 47 Woerner Classic a-j abc 48 Woerner Classic a-j abc 49 Winchester a-h a-e 50 Winchester a-j a-d 51 Winchester f-j abc 52 Winchester b-j b-e LSD (P=.05) Standard Deviation CV Grand Mean Replicate F Replicate Prob(F) Treatment F Treatment Prob(F) Means followed by same letter do not significantly differ (P=.05, LSD) Mean separations are based on the complete error term.