GENERL TRIL INFORMTION Study Director: Daniel. Ball Title: ssoc. Professor ffiliation: OSU - CBRC Investigator: Daniel Ball Trial Status: Complete Initiation Date: Mar-28-00 City: Pendleton State/Prov.: OR Postal Code: 97801 Objective: To evaluate effects of N aduvants and Basagran on pea injury from postemergence imazamox treatments. CROP ND PEST DESCRIPTION Weed 1.SOLTR Nightshade, cutleaf Green Peas Variety: Samish Planting Date: Mar-28-00 Planting Method: DRILLED Rate: 200 lbs/ Depth: 1 IN Row Spacing: 7 INCH Seed Bed: SMOOTH, RESIDUE Plot Width, Unit: 10 FT Plot Length, Unit: 30 FT Reps: 4 Site Type: Dryland Tillage Type: Conventional Study Design: RNDOMIZED COMPLETE BLOCK Form Form Form Rate No. Date Treatment Name Conc Unit Type Rate Unit 1. May-01-00 Carbaryl (Sevin) 1.5 lb ai/ 2. May-23-00 Dimethoate (Digon) 0.66 pt/ SOIL DESCRIPTION Texture: Silt Loam % OM: 1.96 % Sand: 24.8 % Silt: 64.6 % Clay: 10.6 ph: 5.8 CEC: 14.4 PPLICTION DESCRIPTION pplication Date: pr-25-00 Time of Day: 4:00 PM pplication Method: SPRY pplication Timing: EPOCR pplic. Placement: BRODCST ir Temp., Unit: 60 F % Relative Humidity: 54 Wind Velocity, Unit: 0 Dew Presence (Y/N): N Soil Temp 0 in, Unit:63 F Soil Temp 1 in, Unit:61 F Soil Temp 2 in, Unit:59 F Soil Temp 4 in, Unit:58 F Soil Moisture: 2 IN BLW % Cloud Cover: 100 CROP STGE T ECH PPLICTION Crop 1 Stage: 4-5 Stage Scale: Nodes
WEED STGE T ECH PPLICTION Weed 1 SOLTR Stage: cot-2 Stage Scale: leaf PPLICTION EQUIPMENT ppl. Equipment: Hand Boom Operating Pressure: 30 psi Nozzle Type: Flat Fan Nozzle Size: 8002 Nozzle Spacing, Unit:18 in Boom Length, Unit: 10 ft Carrier: Water Spray Volume, Unit: 10
SOLTR Crop Code Peas Peas Peas Rating Data Type INJURY INJURY CONTROL INJURY Rating Unit PERCENT PERCENT PERCENT PERCENT May-04-00 May-11-00 May-11-00 May-26-00 1 Weedy Check 0 0 0 0 2 Imazamox 1 EC 2 OZ/ EPOCR 0 0 100 0 2 R-11 1 L 0.25 % V/V EPOCR 3 Imazamox 1 EC 3 OZ/ EPOCR 0 0 100 0 3 R-11 1 L 0.25 % V/V EPOCR 4 Imazamox 1 EC 4 OZ/ EPOCR 1 2 100 3 4 R-11 1 L 0.25 % V/V EPOCR 5 Imazamox 1 EC 2 OZ/ EPOCR 0 0 100 0 5 R-11 1 L 0.25 % V/V EPOCR 5 Soln 32 1 L 2.5 % V/V EPOCR 6 Imazamox 1 EC 3 OZ/ EPOCR 0 0 100 0 6 R-11 1 L 0.25 % V/V EPOCR 6 Soln 32 1 L 2.5 % V/V EPOCR 7 Imazamox 1 EC 4 OZ/ EPOCR 4 3 100 5 7 R-11 1 L 0.25 % V/V EPOCR 7 Soln 32 1 L 2.5 % V/V EPOCR 8 Imazamox 1 EC 4 OZ/ EPOCR 14 10 100 15 8 R-11 1 L 0.25 % V/V EPOCR 8 MS 1 SG 15 LB/100 GL EPOCR 9 Imazamox 1 EC 2 OZ/ EPOCR 0 0 100 0 9 R-11 1 L 0.25 % V/V EPOCR 9 Soln 32 1 L 2.5 % V/V EPOCR 9 Basagran 4 EC 8 OZ/ EPOCR 10 Imazamox 1 EC 3 OZ/ EPOCR 0 0 100 0 10 R-11 1 L 0.25 % V/V EPOCR 10 Soln 32 1 L 2.5 % V/V EPOCR 10 Basagran 4 EC 8 OZ/ EPOCR 11 Imazamox 1 EC 4 OZ/ EPOCR 0 1 100 1 11 R-11 1 L 0.25 % V/V EPOCR 11 Soln 32 1 L 2.5 % V/V EPOCR 11 Basagran 4 EC 8 OZ/ EPOCR 12 Imazamox 1 EC 4 OZ/ EPOCR 0 0 100 0 12 R-11 1 L 0.25 % V/V EPOCR 12 MS 1 SG 15 LB/100 GL EPOCR 12 Basagran 4 EC 8 OZ/ EPOCR 13 Imazamox 1 EC 4 OZ/ EPOCR 0 1 100 3 13 R-11 1 L 0.25 % V/V EPOCR 13 Soln 32 1 L 2.5 % V/V EPOCR
SOLTR Crop Code Peas Peas Peas Rating Data Type INJURY INJURY CONTROL INJURY Rating Unit PERCENT PERCENT PERCENT PERCENT May-04-00 May-11-00 May-11-00 May-26-00 14 Imazamox 1 EC 4 OZ/ EPOCR 1 3 100 3 14 R-11 1 L 0.25 % V/V EPOCR 14 Soln 32 1 L 2.5 % V/V EPOCR 15 Weedy Check 0 0 0 0 LSD (P=.05) 1.6 3.7 NS 2.4 Replicate F 2.848 0.291 0.000 0.808 Replicate Prob(F) 0.0489 0.8316 1.0000 0.4967 Treatment F 43.067 4.180 0.000 22.825 Treatment Prob(F) 0.0001 0.0002 1.0000 0.0001
Crop Code Rating Data Type Rating Unit Dry Peas Grain Yield lbs/ac 1 Weedy Check 1858 2 Imazamox 1 EC 2 OZ/ EPOCR 1848 2 R-11 1 L 0.25 % V/V EPOCR 3 Imazamox 1 EC 3 OZ/ EPOCR 1884 3 R-11 1 L 0.25 % V/V EPOCR 4 Imazamox 1 EC 4 OZ/ EPOCR 1933 4 R-11 1 L 0.25 % V/V EPOCR 5 Imazamox 1 EC 2 OZ/ EPOCR 2101 5 R-11 1 L 0.25 % V/V EPOCR 5 Soln 32 1 L 2.5 % V/V EPOCR 6 Imazamox 1 EC 3 OZ/ EPOCR 2130 6 R-11 1 L 0.25 % V/V EPOCR 6 Soln 32 1 L 2.5 % V/V EPOCR 7 Imazamox 1 EC 4 OZ/ EPOCR 2206 7 R-11 1 L 0.25 % V/V EPOCR 7 Soln 32 1 L 2.5 % V/V EPOCR 8 Imazamox 1 EC 4 OZ/ EPOCR 2028 8 R-11 1 L 0.25 % V/V EPOCR 8 MS 1 SG 15 LB/100 GL EPOCR 9 Imazamox 1 EC 2 OZ/ EPOCR 1849 9 R-11 1 L 0.25 % V/V EPOCR 9 Soln 32 1 L 2.5 % V/V EPOCR 9 Basagran 4 EC 8 OZ/ EPOCR 10 Imazamox 1 EC 3 OZ/ EPOCR 1886 10 R-11 1 L 0.25 % V/V EPOCR 10 Soln 32 1 L 2.5 % V/V EPOCR 10 Basagran 4 EC 8 OZ/ EPOCR 11 Imazamox 1 EC 4 OZ/ EPOCR 1871 11 R-11 1 L 0.25 % V/V EPOCR 11 Soln 32 1 L 2.5 % V/V EPOCR 11 Basagran 4 EC 8 OZ/ EPOCR 12 Imazamox 1 EC 4 OZ/ EPOCR 1879 12 R-11 1 L 0.25 % V/V EPOCR 12 MS 1 SG 15 LB/100 GL EPOCR 12 Basagran 4 EC 8 OZ/ EPOCR 13 Imazamox 1 EC 4 OZ/ EPOCR 1969 13 R-11 1 L 0.25 % V/V EPOCR 13 Soln 32 1 L 2.5 % V/V EPOCR
Crop Code Rating Data Type Rating Unit Dry Peas Grain Yield lbs/ac 14 Imazamox 1 EC 4 OZ/ EPOCR 1805 14 R-11 1 L 0.25 % V/V EPOCR 14 Soln 32 1 L 2.5 % V/V EPOCR 15 Weedy Check 1695 LSD (P=.05) NS Replicate F 2.364 Replicate Prob(F) 0.0847 Treatment F 0.532 Treatment Prob(F) 0.8999 Trial Comments Imazamox treatment with ammonium sulfate (MS) produced slight crop injury, but did not translate into reduced dry pea seed yield. ddition of Basagran to the imazamox + MS combination decreased the crop injury. Crop safety was not affected by spray gallonage or from addition of 32% N solution. PRIL 25, 2000 Trial sprayed with handboom. Spray volumes 10 gpa: 80015 nozzle @ 30 psi 20 gpa: 8004 nozzle @ 15 psi 30 gpa: 8004 nozzle @ 30 psi May 26, 2000 Treatment 4: Injury showing as stand thinning or low plant vigor Treatment 7: Injury is showing as Less Bloom on the crop Treatment 8: Injury is showing as No Bloom on the crop Treatment 14: Injury showing as Less Bloom on the crop