BUR CUCUMBER CONTROL IN CORN WITH POSTEMERGENCE HERBICIDES

Transcription

1 ANNUAL AND BIENNIAL WEEDS BUR CUCUMBER CONTROL IN CORN WITH POSTEMERGENCE HERBICIDES DEEN, B, SHROPSHIRE, C. ECW/EDI-2.4 EXPERIMENT ID: PW98C13 CROP: CORN, FIELD PLANTED: 98/05/19. PLANTING METHOD: PRECISION PLANTER. PREV CROPS: NO CROP (97). FIELD EXPT. EXPT DESIGN: RANDOMIZED COMPLETE BLOCK. REPS: 4. PLOT SIZE: 2 X 8M. PLOT AREA: 16 SQ M. CROP ZONE: 999. EXPT LOCATION: RODNEY, ON. WEATHER STN: RIDGETOWN, ON. ACTUAL PPT(MM): MAR: 80.4, APR: 83.0, MAY: 53.4, JUN: 39.6, JUL: 91.6, AUG: 94.6, SEP: 50.8.ACTUAL TEMP(C): MAR: 3.2, APR: 8.5, MAY: SITE DESCRIPTION: MATERIALS AND METHODS: THE RATE OF AGRAL 90 AND 28% UAN WAS % V/V, NOT KG AI/HA. CROP INJURY: GROWTH REDUCTION. SEVERITY = EXTENT OF INJURY PER PLANT, FREQUENCY = PERCENT OF PLANTS AFFECTED IN A GIVEN TREATMENT. BURCUCUMBER WERE DIVIDED INTO SMALL (4 OR FEWER LEAVES AT APPLICATION) AND LARGE (MORE THAN 4 LEAVES AT APPLICATION). APPL INFO# BUR BUR BUR BUR FIELD FIELD BUR BUR T GROWTH ST INFO# CUCUMB CUCUMB CUCUMB CUCUMB CORN CORN CUCUMB CUCUMB R INCORP INFO# RATE % SMALL LARGE SMALL LARGE SEVERI FREQUE SMALL LARGE T KG/HA CONC VIAL VIAL VIAL VIAL VIAL VIAL VIAL VIAL # V V V MIX MANAGEMENT (AI) CHECK (WEEDY) 0C 0D 0C 0D 0C 0B 0B 0C ATRAZINE WG 100A 100A 100A 95AB 0C 0B 67A 67AB DICAMBA SN 97A 73B 98A 90ABC 4C 20B 92A 75A F DICAMBA A 100A 100A 100A 0C 0B 100A 100A A 100A 100A 100A 3C 20B 100A 100A F 2,4-D AMINE T BROMOXYNIL EC 100A 100A 100A 97AB 0C 0B 100A 94A 1 1 T ATRAZINE WG T PROLFURON WG 83A 68B 97A 81ABC 3C 15B 100A 81A T DICAMBA WG EC WG 60B 30C 85B 73C 3C 20B 77A 29BC EC T DPX WG 88A 70B 98A 99A 0C 0B 50A 68AB EC F IMAZETHAPYR A 97A 100A 100A 0C 0B 100A 100A T FERT SN EC GLYPHOSATE SN 100A 100A 100A 75BC 100A 100A 100A 100A GLUFOSINATE AMM SN 100A 83AB 100A 100A 15B 69A 100A 67AB 19 LSD 21 LSD 8 LSD 20 LSD 6 LSD 32 LSD 50 LSD 40 LSD 5% 5% 5% 5% 5% 5% 5% 5% 15 CV 19 CV 6 CV 17 CV 37 CV 108 CV 40 CV 37 CV SAMPLE SIZE (SQ.M) NUMBER OF SAMPLES DATE ASSESSED (YYMMDD) LEAF RANGE HEIGHT (CM) 100- PLANT DENSITY (PL/SQ.M) 0 4 2,4-D AMINE -UAP; FERT -CYC; AGRAL 90 -CHP; ATRAZINE -BAZ ( 4:1); ATRAZINE -CGC ( 2:1); ATRAZINE -CGC ( 6:1); ATRAZINE -CYC (10:1); ATRAZINE -UAP ( 5:1); BROMOXYNIL -RPC; DICAMBA -BAZ; DPX DUQ; GLUFOSINATE AMMONIUM -CAX; GLYPHOSATE -MOL; IMAZETHAPYR (AC 263,499) -CYC; NAF-73 -DWE; PROLFURON (CGA ) -CGC; POST-E CO2 SPRAYER /06/ GROWTH INFORMATION INCORPORATION INFORMATION STAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS INCORP DEP INFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 INFO# DATE TYPE CM 1 FIELD CORN BUR CUCUMB (SMALL ) BUR CUCUMB (LARGE ) CONCLUSIONS: EXCELLENT SEASON-LONG CONTROL OF LARGE AND SMALL BURCUCUMBER WAS PROVIDED BY DICAMBA/ATRAZINE, ATRAZINE/2,4-D, BROMOXYNIL WITH ATRAZINE, IMAZETHAPYR/ATRAZINE WITH AGRAL 90 AND 28%, AND GLYPHOSATE. ATRAZINE ALONE HAD EXCELLENT INITIAL BURCUCUMBER CONTROL, BUT THIS WEAKENED BY 56 DAYS AFTER TREATMENT. DICAMBA, PROLFURON WITH DICAMBA AND AGRAL 90, AND GLUFOSINATE PROVIDED GOOD TO EXCELLENT CONTROL OF SMALL BURCUCUMBER (4 OR FEWER LEAVES AT APPLICATION), BUT TENDED NOT TO CONTROL LARGE BURCUCUMBER AS WELL. NEITHER NAF-73 WITH AGRAL 90 NOR DPX WITH AGRAL 90 CONTROLLED BURCUCUMBER WELL AT 56 DAYS, EVEN THOUGH MID-SEASON CONTROL WAS EXCELLENT FOR BOTH LARGE AND SMALL BURCUCUMBER IN THE CASE OF DPX SECONDARY INDEX: CONTROL OF WEEDS IN CORN (FIELD AND SWEET). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN). 204

2 GIANT FOXTAIL CONTROL IN RIDGE-TILL CORN WITH EXP31130A EXPERIMENT ID: FC98B5 CROP: CORN, FIELD (3515). PLANTED: 98/04/29, SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON / / AT 252 KG/HA PROD WITH FERT BROADCAST ON / / AT 252 KG/HA PROD WITH PREV CROPS: SOYBEAN (97). FIELD EXPT. EXPT DESIGN: RANDOMIZED COMPLETE BLOCK. REPS: 4. PLOT SIZE: 2 X 8M. PLOT AREA: 16 SQ M. CROP ZONE: 999. EXPT LOCATION: THAMESVILLE, ON. WEATHER STN: RIDGETOWN, ON. CORN, FIELD (3515) EMERGED ON: 98/05/08. SITE DESCRIPTION: MATERIALS AND METHODS: 200 KG/HA OF ACTUAL N WAS APPLIED AS A SIDEDRESSING. THE "OTHER ASSESSMENT" IN COLUMN 7 IS CORN YIELD IN BU/ACRE. APPL INFO# FIELD FIELD GIANT GIANT GIANT FIELD FIELD T GROWTH ST INFO# CORN CORN FOXTAI FOXTAI FOXTAI CORN CORN R INCORP INFO# RATE % T KG/HA CONC VIAL VIAL VIAL VIAL PLANTS YIELD OTHER # V V V MIX MANAGEMENT (AI) #/SQ M T/HA ASSESS 1 CHECK (WEEDY) 0C 0 0D 0C ISOXAFLUTOLE WG 0C 0 80A 86A ISOXAFLUTOLE WG 0C 0 76AB 84A ATRAZINE WG 1C 0 43C 49B T ISOXAFLUTOLE WG 0C 0 49BC 61AB T ATRAZINE WG 6 1 T ISOXAFLUTOLE WG 1BC 0 61ABC 75AB T ATRAZINE WG 7 1 T ISOXAFLUTOLE WG 3AB 0 76AB 84A T ATRAZINE WG 8 1 T ISOXAFLUTOLE WG 3A 0 80A 81AB T ATRAZINE WG 9 1 F CGA EC 1C 0 84A 90A F BENOXACOR 4.5EC T DICAMBA SN 10 1 T PENDIMETHALIN EC 0C 0 73AB 66AB 3.00AB T ATRAZINE WG 1.9 LSD NFS 29.2LSD 33.7LSD NFS NFS NFS 5% 5% 5% 1.3 SE 0 SE 20 CV 23 SE 7.3 SE 1.34SE 21.3SE 178 CV 0 CV 32 SE 34 CV 150 CV 10.5CV 10.5CV SAMPLE SIZE (SQ.M) NUMBER OF SAMPLES DATE ASSESSED (YYMMDD) LEAF RANGE HEIGHT (CM) FLOWER WEED DENSITY (PL/SQ.M) ATRAZINE -CGC; BENOXACOR -CGC; CGA CGC; DICAMBA -BAZ; ISOXAFLUTOLE (EXP 31130A) -RPC; PENDIMETHALIN -CYC; PE CO2 SPRAYER /04/ GROWTH INFORMATION INCORPORATION INFORMATION CONCLUSIONS: THERE WAS NO INJURY OF COMMERCIAL SIGNIFICANCE WITH THE HERBICIDE TREATMENTS EVALUATED. ISOXAFLUTOLE ALONE, PROVIDED GOOD CONTROL OF GIANT FOXTAIL. ATRAZINE ALONE PROVIDED POOR CONTROL OF GIANT FOXTAIL. THE LEVEL OF GIANT FOXTAIL CONTROL WITH THE TANKMIX OF ISOXAFLUTOLE PLUS ATRAZINE IMPROVED AS THE RATE WAS INCREASED (NOT STATISTICALLY SIGNIFICANT). THE TANKMIXES OF ISOXAFLUTOLE PLUS ATRAZINE, METOLACHLOR PLUS DICAMBA, AND PENDIMETHALIN PLUS ATRAZINE PROVIDED A SIMILAR LEVEL OF GIANT FOXTAIL CONTROL. (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN). 205

3 CANADA FLEABANE CONTROL IN NO-TILL CORN WITH PREPLANT HERBICIDE APPLICATIONS EXPERIMENT ID: NC98A4 CROP: CORN, FIELD (PIO 3515). PLANTED: 98/05/08, SE/HA, 5 CM DEEP, 100 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/01 AT 224 KG/HA PROD WITH FERT BROADCAST ON 98/05/01 AT 112 KG/HA PROD WITH FERT WITH SEED ON 98/05/08 AT 112 KG/HA PROD WITH PREV CROPS: SOYBEAN (97). FIELD EXPT. EXPT DESIGN: RANDOMIZED COMPLETE BLOCK. REPS: 4. PLOT SIZE: 2 X 7M. PLOT AREA: 14 SQ M. CROP ZONE: 999. EXPT LOCATION: RIDGETOWN, ON. WEATHER STN: RIDGETOWN, ON. CORN, FIELD (3515) EMERGED ON: 98/05/13. MATERIALS AND METHODS: APPL INFO# FIELD FIELD CANADA CANADA T GROWTH ST INFO# CORN CORN FLEABA FLEABA R INCORP INFO# RATE % T KG/HA CONC VIAL VIAL VIAL VIAL # V V V MIX MANAGEMENT (AI) CHECK (WEEDY) B 86C GLYPHOSATE SN T ATRAZINE WG AB 95ABC T DICAMBA SN A 100A F DICAMBA A 100A T NAF WG A 98AB F IMAZETHAPYR AB 91BC T ISOXAFLUTOLE WG A 100A T ATRAZINE WG NFS NFS 2.2 LSD 8.4 LSD 5% 5% 0 SE 0 SE 1.5 SE 5.7 SE 0 CV 0 CV 1.5 CV 5.9 CV SAMPLE SIZE (SQ.M) NUMBER OF SAMPLES DATE ASSESSED (YYMMDD) LEAF RANGE HEIGHT (CM) WEED DENSITY (PL/SQ.M) ATRAZINE -BAZ ( 4:1); ATRAZINE -CGC ( 2:1); ATRAZINE -CGC ( 7:1); ATRAZINE -CYC ( 6:1); DICAMBA -BAZ; GLYPHOSATE -MOL; IMAZETHAPYR (AC 263,499) -CYC; ISOXAFLUTOLE (EXP 31130A) -RPC; NAF-72 -DWE; PP-S CO2 SPRAYER /05/ GROWTH INFORMATION INCORPORATION INFORMATION 1 M-EAR CHICKW FLOWER 0.5 CANADAFLEABA LAMBS QUARTE VELVETLEAF PRICKLLETTUC PERENNS-THIS CONCLUSIONS: THE WEED PRESRE WAS LOW IN THIS TRIAL DUE TO THE EXTREMELY DRY CONDITIONS DURING THE SPRING OF THE PREPLANT APPLICATION OF GLYPHOSATE CONTROLLED THE WEEDS THAT HAD EMERGED PRIOR TO PLANTING, AND THERE WAS VERY LITTLE EMERGENCE AFTER PLANTING. THERE WAS NO INJURY IN CORN WITH THE HERBICIDE TREATMENTS EVALUATED. GLYPHOSATE ALONE PROVIDED GREATER THAN 85 PERCENT CONTROL OF CANADA FLEABANE. THE ADDITION OF DICAMBA, DICAMBA/ATRAZINE, NAF-72, AND ISOXAFLUTOLE PLUS ATRAZINE IMPROVED THE CONTROL MARGINALLY. SECONDARY INDEX: CONSERVATION TILLAGE & WEED MANAGEMENT. (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN). 206

4 CANADA FLEABANE CONTROL IN NO-TILL CORN WITH POSTEMERGENCE HERBICIDES EXPERIMENT ID: NC98C4 CROP: CORN, FIELD (PIO 3515). PLANTED: 98/05/08, SE/HA, 5 CM DEEP, 100 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/01 AT 112 KG/HA PROD WITH FERT BROADCAST ON 98/05/01 AT 224 KG/HA PROD WITH FERT WITH SEED ON 98/05/08 AT 112 KG/HA PROD WITH PREV CROPS: SOYBEAN (97). FIELD EXPT. EXPT DESIGN: RANDOMIZED COMPLETE BLOCK. REPS: 4. PLOT SIZE: 2 X 7M. PLOT AREA: 14 SQ M. CROP ZONE: 999. EXPT LOCATION: RIDGETOWN, ON. WEATHER STN: RIDGETOWN, ON. CORN, FIELD (3515) EMERGED ON: 98/05/13. MATERIALS AND METHODS: 150 UNITS OF NITROGEN (AS ANHYDROUS) WAS SIDEDRESSED. THE RATE OF AGRAL 90 WAS % V/V, NOT KG AI/HA AND THE RATE OF FERT WAS L/HA. THE "OTHER" ASSESSMENT IN COLUMN 10 IS CORN YIELD IN BU/ACRE. APPL INFO# FIELD FIELD CANADA CANADA PRICKL LAMBS CANADA PRICKL FIELD FIELD T GROWTH ST INFO# CORN CORN FLEABA FLEABA LETTUC QUARTE FLEABA LETTUC CORN CORN R INCORP INFO# RATE % T KG/HA CONC VIAL VIAL VIAL VIAL VIAL VIAL VIAL VIAL YIELD OTHER # V V V MIX MANAGEMENT (AI) T/HA ASSESS 1 CHECK (WEEDY) 0C 0C 0E 0D 0C 1C 0F 0C 1.0D 16D ATRAZINE WG 0C 0C 25D 35C 25BC 58B 33E 73AB 2.7CD 43CD DICAMBA SN 0C 0C 70BC 97A 93A 98A 94A 63AB 7.5A 120A F DICAMBA C 0C 91AB 94A 75AB 96A 89AB 98A 5.8AB 91AB C 0C 66C 68B 90A 100A 60CD 88A 4.7BC 76BC F 2,4-D ESTER T BROMOXYNIL EC 0C 0C 89AB 85A 75AB 85A 73ABC 88A 7.7A 123A 1 1 T ATRAZINE WG T PROLFURON WG 0C 0C 55C 81AB 83A 100A 64CD 83AB 6.2AB 99AB T DICAMBA WG WG 0C 0C 60C 66B 95A 99A 50DE 94A 4.2BC 68BC OT F IMAZETHAPYR C 0C 3E 8D 50ABC 85A 10F 44B 0.5D 8D T FERT 2.0 OT GLYPHOSATE SN 93A 93A 95A 88A 70AB 83A 71BCD 58AB 2.4CD 38CD GLUFOSINATE AMM SN 68B 23B 93A 81AB 50ABC 58B 71BCD 85AB 6.3AB 101AB 6.7 LSD 8.2 LSD 21.2LSD 16.8LSD 53 LSD 22.4LSD 22.2LSD 42.3LSD 2.67LSD 42.5LSD 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 4.6 SE 5.6 SE 14.7SE 11.6SE 37 SE 15.5SE 15.4SE 29.3SE 1.85SE 29.5SE 31.8CV 53.7CV 25 CV 18.2CV 57 CV 19.8CV 27.6CV 41.8CV 41.5CV 41.5CV SAMPLE SIZE (SQ.M) NUMBER OF SAMPLES DATE ASSESSED (YYMMDD) LEAF RANGE HEIGHT (CM) WEED DENSITY (PL/SQ.M) ,4-D ESTER -UAP; FERT -OTH; AGRAL 90 -CHP; ATRAZINE -BAZ ( 4:1); ATRAZINE -CGC ( 2:1); ATRAZINE -CGC ( 6:1); ATRAZINE -CYC ( 9:1); ATRAZINE -UAP ( 5:1); BROMOXYNIL -RPC; DICAMBA -BAZ ( 3:1); DICAMBA -BAZ ( 4:1); DICAMBA -CGC ( 7:1); GLUFOSINATE AMMONIUM -CAX; GLYPHOSATE -MOL; IMAZETHAPYR (AC 263,499) -CYC; NAF-73 -DWE; PROLFURON (CGA ) -CGC; POST-E CO2 SPRAYER /05/ GROWTH INFORMATION INCORPORATION INFORMATION 1 FIELD CORN (3515 ) CANADAFLEABA LAMBS QUARTE COMMONRAGWEE PERENNS-THIS T-LEAFS-WELL 8 13 FLOWER 8.5 PRICKLLETTUC CONCLUSIONS: THIS TRIAL WAS CONDUCTED IN CONVENTIONAL CORN, WHICH EXPLAINS THE EXTREMELY HIGH CROP INJURY RATINGS FOR THE GLYPHOSATE AND GLUFOSINATE TREATMENTS. DICAMBA AND DICAMBA/ATRAZINE PROVIDED EXCELLENT CONTROL OF CANADA FLEABANE; BROMOXYNIL PLUS ATRAZINE AND GLYPHOSATE AND GLUFOSINATE PROVIDED GOOD CONTROL; ATRAZINE/2,4-D, PROLFURON PLUS DICAMBA, AND NAF-73 PROVIDED FAIR CONTROL; AND IMAZETHAPYR/ATRAZINE PROVIDED POOR CONTROL OF CANADA FLEABANE. SECONDARY INDEX: CONSERVATION TILLAGE & WEED MANAGEMENT. (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN). 207

5 FIELD HORSETAIL CONTROL IN CORN EXPERIMENT ID: NC98C5 CROP: CORN, FIELD (PIO 3515). PLANTED: 98/05/15, SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT MAINT APPL: PRIMEXTRA LIGHT 7.5 L/HA (HERBICIDE). PREV CROPS: SOYBEAN (97). FIELD EXPT. EXPT DESIGN: RANDOMIZED COMPLETE BLOCK. REPS: 4. PLOT SIZE: 2 X 8M. PLOT AREA: 16 SQ M. CROP ZONE: 999. EXPT LOCATION: HIGHGATE, ON. WEATHER STN: RIDGETOWN, ON. CORN, FIELD (3515) EMERGED ON: 98/05/21. MATERIALS AND METHODS: 180, 34, AND 134 KG/HA OF NITROGEN, PHOSPHORUS AND POTASH RESPECTIVELY WERE APPLIED TO THE TRIAL. THE RATE OF AGRAL 90 WAS % V/V, NOT KG AI/HA. APPL INFO# FIELD FIELD FIELD FIELD FIELD T GROWTH ST INFO# CORN CORN HORSET HORSET HORSET R INCORP INFO# RATE % T KG/HA CONC VIAL VIAL VIAL VIAL VIAL # V V V MIX MANAGEMENT (AI) CHECK (WEEDY) 0 0 0E 0D 0E MCPA AMINE SN AB 70ABC 66C T RIMLFURON WG D 53C 40D BCD 76AB 65C T RIMLFURON WG ABC 63BC 69BC MCPA AMINE SN ABC 61BC 68C T DPX WG CD 68ABC 71BC ABC 75AB 81ABC T DPX WG A 86A 93A MCPA AMINE SN AB 73ABC 76ABC T NICOLFURON WG D 66ABC 65C AB 81AB 89AB T NICOLFURON WG ABC 69ABC 83ABC NFS NFS 20 LSD 22.5LSD 20.5LSD 5% 5% 5% 0 SE 0 SE 14 SE 15.7SE 14.3SE 0 CV 0 CV 22 CV 24 CV 21.5CV SAMPLE SIZE (SQ.M) NUMBER OF SAMPLES DATE ASSESSED (YYMMDD) LEAF RANGE HEIGHT (CM) WEED DENSITY (PL/SQ.M) AGRAL 90 -CHP; DPX DUQ; MCPA AMINE -CGC; NAF-73 -DWE; NICOLFURON (DPX V9360) -DUQ; RIMLFURON (DPX-E-9636) -DUQ; POST-E CO2 SPRAYER /05/ POST-E CO2 SPRAYER /06/ POST-E CO2 SPRAYER /06/ GROWTH INFORMATION INCORPORATION INFORMATION 1 FIELD CORN (3515 ) FIELD HORSET FIELD CORN (3515 ) FIELD HORSET FIELD CORN (3515 ) FIELD HORSET CONCLUSIONS: THERE WAS NO INJURY IN CORN WITH THE HERBICIDE TREATMENTS EVALUATED. THE LEVEL OF FIELD HORSETAIL CONTROL IMPROVED AS THE APPLICATION OF FLUMETLAM/CLOPYRALID/2,4-D AND MCPA WAS DELAYED. NUMERICALLY, FLUMETLAM/CLOPYRALID/2,4-D PROVIDED BETTER CONTROL THAN MCPA. THE TANKMIX OF DPX PLUS FLUMETLAM/CLOPYRALID/2,4-D PROVIDED THE BEST CONTROL OF FIELD HORSETAIL OUT OF ALL THE TREATMENTS EVALUATED. SECONDARY INDEX: CONSERVATION TILLAGE & WEED MANAGEMENT. (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN). 208