University of Florida

Transcription

1 EVALUATION OF HERBICIDES IN SEEDLESS WATERMELON Site Description Trial ID: WATERMELON07 Location: LIVE OAK General Trial Information Protocol ID: WATERMELON07 Study Director: Investigator: W. M. Stall Investigator: W. M. Stall Title: PROFESSOR Affiliation: HORTICULTURAL SCIENCES DEPT Postal Code: Trial Location City: LIVE OAK State/Prov.: FL Postal Code: Guideline Description Objectives: TO EVALUATE EPTAM APPLIED ALONE AND TANK MIXED WITH SANDEA OR SINBAR AND EVALUATE V IN WATERMELON FOR PHYTO AND NUTSEDGE CONTROL. Conclusions: THE NUMBER OF NUTSEDGE EMERGING IN THE PLOTS WERE LOW, BUT THE PRE APPLICATIONS OF EPTAM AND V DID SIGNIFICANTLY REDUCE THE NUMBER. the POST APPLICATION OF V DID CAUSE SIGNIFICANT STUNTING AND SOME BLEACHING OF THE RUNNERS. LATE CONTROL WAS GOOD TO EXCELLENT WITH THE EPTAM AND V TREATMENTS EXCEPT THE LOW (0.2) PRE RATE OF V SINBAR DOES NOT CONTROL NUTSEDGE AND WAS NOT EXPECTED TO. THE FIRST HARVEST WAS MADE EARLY, MOST LIKELY TOO EARLY, IN THAT SOME OF THEMELONS THAT WERE CUT LATER WERE NOT COMPLETELY RIPE. WE HAD AN INEXPERIENCED CREW AND A NEW MELON CULTIVAR. THE EPTC (4 PT) THE EPTC + SANDEA AND THE EPTC + SINBAR YIELD WAS SIGNIFICANTLY LOWER THAN THE CHECK AT THE FIRST HARVEST. YIELDS ON THE SECOND HARVEST WERE JUST BACKWARDS FROM THE FIRST HARVEST AND THERE WERE NO SIGNIFICANT DIFFERENCES IN TOTAL YIELDS AMONG THE TREATMENTS. Cooperator/Landowner Crop Description Crop 1: CITLA Citrullus lanatus Watermelon Variety: SUPER CRISP Description: TRIPLOID (SEEDLESS) BBCH Scale: BVVT Planting Date: 10Apr07 Planting Method: TRANSPLANTED - HAND Rate, Unit: 3 FT Row Spacing, Unit: 7 FT Spacing Within Row, Unit: 3 FT Seed Bed: COMPACTED Harvest Date: 21Jun07 Harvest Equipment: HAND Pest Description Site and Design Plot Width, Unit: 5 FT Plot Length, Unit: 27 FT Replications: 4 Study Design: Randomized Complete Block Previous Crops Previous Pesticides Year Maintenance Maintenance Form Form Form Rate Tank No. Date Treatment Name Conc Unit Type Rate Unit Mix Soil Description

2 Site Description % Sand: 95 % OM: 1 Texture: FINE SAND % Silt: 4 ph: 5.7 Soil Name: LAKELAND SAND % Clay: 1 CEC: 4.9 Additional Measured Elements Element Quantity Unit Moisture Conditions Date Time Amount Unit Type Interval Unit Application Description A B Application Date: 27Mar07 04May07 Time of Day: 11:30 9:20 Application Method: SPRAY SPRAY Application Timing: AFTBED POSPOS Application Placement: BROSOI BROFOL Applied By: STALL/MORRI STALL/MORRI Air Temperature, Unit: 78 F 80 F % Relative Humidity: Wind Velocity, Unit: 1 MPH 0 MPH Wind Direction: E Dew Presence (Y/N): N N Water Hardness: HARD HARD Soil Temperature, Unit: 75 F 81 F Soil Moisture: ADEQUATE ADEQUATE % Cloud Cover: Crop Stage At Each Application A B Crop 1 Code, BBCH Scale: CITLA BVVT CITLA BVVT Stage Scale Used: DESC DESC Stage Majority, Percent: PRETRANS ' RUNN 100 A At Each Application Application Equipment A B Appl. Equipment: BACKPACK BACKPACK Operating Pressure, Unit: 17 PSI 30 PSI Nozzle Type: FLAT FAN FLAT FAN Nozzle Size: Nozzle Spacing, Unit: 20 IN 20 IN Nozzles/Row: 3 2 Band Width, Unit: 72 IN 40 IN Boom Length, Unit: 40 IN 20 IN Boom Height, Unit: 15 IN 18 IN Ground Speed, Unit: 3 MPH 3 MPH Carrier: WATER WATER Spray Volume, Unit: 30 GPA 30 GPA Mix Size, Unit: 0.5

3 Site Description Propellant: CO2 CO2 Tank Mix (Y/N): N N Trt No Treatment Application Comment Date By Notes Date By Deviations

4 EVALUATION OF HERBICIDES IN SEEDLESS WATERMELON Trial ID: WATERMELON07 Protocol ID: WATERMELON07 Location: LIVE OAK Study Director: Investigator: W. M. Stall Pest Type W Weed W Weed Pest Code CYPRO CYPRO Pest Name Purple nutg> Purple nutg> Crop Name WATERMELON Crop Variety SUPERCRISP Part Rated PLATOT P PLATOT C PLATOT P Rating Date 20Apr07 01May07 01May07 Rating Data Type EMERGENCE VIGOR EMERGENCE Rating Unit NO/PLOT NO/PLOT Crop Stage 3 " RUNN 3 " RUNN Crop Stage Scale DESC DESC 10 IN Days After First/Last Applic Trt-Eval Interval 24 DA-A 35 DA-A 35 DA-A Plant-Eval Interval 10 DP-1 21 DP-1 21 DP-1 ARM Action Codes No. Name Conc Type Rate Unit Description UNTREATED CHECK a a a 2 EPTAM 7 E 3 PT/A PRETRANSPLANT 1.00 b ab 3.00 b 3 EPTAM 7 E 4 PT/A PRETRANSPLANT 0.25 b b 1.75 b b a 3.25 b 5 EPTAM 7 E 3 PT/A PRETRANSPLANT 0.25 b ab 2.75 b a ab a 7 EPTAM 7 E 3 PT/A PRETRANSPLANT 1.25 b a 3.00 b 8 V WG 0.2 LB AI/A PRETRANSPLANT 1.75 b b 3.25 b 9 V WG 0.3 LB AI/A PRETRANSPLANT 1.00 b b 3.25 b 10 V WG 0.3 LB AI/A POSTEMERGENCE 8.00 a a ab LSD (P=.05) Standard Deviation CV Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

5 Pest Type W Weed Pest Code CYPRO Pest Name Purple nutg> Crop Name WATERMELON WATERMELON Crop Variety SUPERCRISP SUPERCRISP Part Rated PLANT C PLANT C Rating Date 15May07 25May07 25May07 Rating Data Type PHYGEN VIGOR CONTROL Rating Unit Crop Stage 6' RUNNE LAPPING Crop Stage Scale DESC DESC Days After First/Last Applic Trt-Eval Interval Plant-Eval Interval 35 DP-1 45 DP-1 45 DP-1 ARM Action Codes No. Name Conc Type Rate Unit Description UNTREATED CHECK 0.00 b a 0.00 c 2 EPTAM 7 E 3 PT/A PRETRANSPLANT 0.00 b a ab 3 EPTAM 7 E 4 PT/A PRETRANSPLANT 0.00 b a a b a a 5 EPTAM 7 E 3 PT/A PRETRANSPLANT 0.00 b a a b a 0.00 c 7 EPTAM 7 E 3 PT/A PRETRANSPLANT 0.00 b a ab 8 V WG 0.2 LB AI/A PRETRANSPLANT 0.00 b a b 9 V WG 0.3 LB AI/A PRETRANSPLANT 0.00 b a ab 10 V WG 0.3 LB AI/A POSTEMERGENCE a b ab LSD (P=.05) Standard Deviation CV Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

6 Pest Type Pest Code Pest Name Crop Name WATERMELON WATERMELON WATERMELON Crop Variety SUPERCRISP SUPERCRISP SUPERCRISP Part Rated FRUHAR C FRUHAR C FRUHAR C Rating Date 21Jun07 21Jun07 29Jun07 Rating Data Type YIELD YIELD YIELD Rating Unit LB/PLOT NO/PLOT LB/PLOT Crop Stage Crop Stage Scale Days After First/Last Applic Trt-Eval Interval Plant-Eval Interval 72 DP-1 72 DP-1 80 DP-1 ARM Action Codes No. Name Conc Type Rate Unit Description UNTREATED CHECK ab 6.25 ab cd 2 EPTAM 7 E 3 PT/A PRETRANSPLANT bcd 4.50 a-d abc 3 EPTAM 7 E 4 PT/A PRETRANSPLANT cd 2.50 cd abc ab 5.50 abc bcd 5 EPTAM 7 E 3 PT/A PRETRANSPLANT d 2.00 d bcd abc 5.25 abc ab 7 EPTAM 7 E 3 PT/A PRETRANSPLANT cd 2.75 cd a 8 V WG 0.2 LB AI/A PRETRANSPLANT bcd 3.75 bcd a-d 9 V WG 0.3 LB AI/A PRETRANSPLANT a 7.50 a d 10 V WG 0.3 LB AI/A POSTEMERGENCE abc 5.25 abc bcd LSD (P=.05) Standard Deviation CV Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

7 Pest Type Pest Code Pest Name Crop Name WATERMELON WATERMELON WATERMELON Crop Variety SUPERCRISP SUPERCRISP SUPERCRISP Part Rated FRUHAR C FRUHAR C FRUHAR C Rating Date 29Jun07 Rating Data Type YIELD TOTAL TOTAL Rating Unit NO/PLOT LB/PLOT NO/PLOT Crop Stage Crop Stage Scale Days After First/Last Applic Trt-Eval Interval Plant-Eval Interval 80 DP-1 ARM Action Codes T1 T2 No. Name Conc Type Rate Unit Description UNTREATED CHECK 6.75 d a a 2 EPTAM 7 E 3 PT/A PRETRANSPLANT ab a a 3 EPTAM 7 E 4 PT/A PRETRANSPLANT abc a a bcd a a 5 EPTAM 7 E 3 PT/A PRETRANSPLANT a-d a a ab a a 7 EPTAM 7 E 3 PT/A PRETRANSPLANT a a a 8 V WG 0.2 LB AI/A PRETRANSPLANT a-d a a 9 V WG 0.3 LB AI/A PRETRANSPLANT 7.25 cd a a 10 V WG 0.3 LB AI/A POSTEMERGENCE bcd a a LSD (P=.05) Standard Deviation CV Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

8 Pest Type Pest Code Pest Name Crop Name Crop Variety Part Rated Rating Date Rating Data Type Rating Unit Crop Stage Crop Stage Scale Days After First/Last Applic. Trt-Eval Interval Plant-Eval Interval ARM Action Codes WATERMELON SUPERCRISP FRUHAR C TOTAL WT/MELON T3 No. Name Conc Type Rate Unit Description 13 1 UNTREATED CHECK a 2 EPTAM 7 E 3 PT/A PRETRANSPLANT c 3 EPTAM 7 E 4 PT/A PRETRANSPLANT bc ab 5 EPTAM 7 E 3 PT/A PRETRANSPLANT c abc 7 EPTAM 7 E 3 PT/A PRETRANSPLANT c 8 V WG 0.2 LB AI/A PRETRANSPLANT abc 9 V WG 0.3 LB AI/A PRETRANSPLANT abc 10 V WG 0.3 LB AI/A POSTEMERGENCE c LSD (P=.05) Standard Deviation CV 9.16 Replicate F Replicate Prob(F) Treatment F Treatment Prob(F) Additional Treatment Information Treatment Name UNTREATED CHECK,, = Not treated Form Type WP = Wettable powder A powder formulation to be applied as a suspension after dispersion in water. WG = Water dispersible granules A formulation consisting of granules to be applied after disintegration and dispersion in water. L = Liquid *** Old term - will fail validation in most customized ARM study definitions *** Rate Unit PT/A = Pints Product per Acre (Metric=L/HA) P OZ WT/A = Ounces Dry Product per Acre (Metric=G/MU) AB LB A/A = Pounds Active Ingredient per Acre (Metric=KG A/HA) A % V/V = Percent, Volume Product per Volume Mix Basis (Metric=same) Z