THE EFFECT OF FOLIAR FERTILIZERS ON HERBICIDE EFFICACY AND OAT YIELD I

Transcription

1 THE EFFECT OF FOLIAR FERTILIZERS ON HERBICIDE EFFICACY AND OAT YIELD I Experiment ID: OT04C1A CROP: AVESA, OAT, SPRING (IRISH). Planted: Apr-16-04, 110 KG/HA, 5 CM Deep, 17.5 CM Row Width. Planting Method: DOUBLE DISK DRILL. Emerged On: Apr TRFPR, CLOVER, FIELD (SINGLE CUT, COMMON). Planted: Apr-16-04, 5 KG/HA, 0.5 CM Deep Planting Method: DOUBLE DISK DRILL. FIELD Site. Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 44 M. Expt. Location: HRS - Range S17. Site Description: Soil Texture: MEDIUM. %OM: 4.3 %Sand: 44 %Silt: 33 %Clay: 23 ph: 7.7 CEC: 28. APPLICATION DESCRIPTION STAGE AT APPLICATION Application: A Application: A Date : May Crop 1 AVESA ZADOK 14 Time of Day: 8:30 AM Height : 22 CM Method : CO2 SPRAY Crop 2 TRFPR 1 TRI Timing : POST Height : 2 CM Placement : FOLIAR Air Temp. : 16.3 C Weed 1 CHEAL 2 LEAF % Humidity : 72 Stg.Scale: 3 CM Wind Speed : 8.1 KM/H Density : 8 M2 Dew Present: y Weed 2 SINAR 6 LEAF Soil Moist.: SB-M SF-M Stg.Scale: 7.5 CM Cloud Cover: 40% Density : 6 M2 Equipment : CO2 SPRAY Weed 3 AMARE 1 LEAF Pressure : 241 kpa Stg.Scale: 1 CM Nozzle Type: FLAT FAN Density : 28 M2 Nozzle Size: 8002 VS Weed 4 POLLA 3 LEAF Noz.Spacing: 50 CM Stg.Scale: 5 CM Boom Length: 2 M Density : 14 M2 Boom Height: 50 CM Weed 5 AMBEL 4 LEAF Carrier : WATER Stg.Scale: 3.4 CM Appl.Volume: 200 L/HA Density : 75 M2 Propellant : CO2 Weed 6 POLCO 3 LEAF Stg.Scale: 5 CM Density : 5 M2 Weed 7 HIBTR COTYLEDON Stg.Scale: 2 CM Density : 56 M2 Weed 8 SETVI 2 LEAF Stg.Scale: 2 CM Density : 10 M2 Weed Code CHEAL SINAR AMARE POLLA Crop Code AVESA AVESA TRFPR AVESA AVESA AVESA AVESA INJURY INJURY INJURY CONTROL CONTROL CONTROL CONTROL May Jun Jun Jun Jun Jun Jun Crop Stage ZADOK 24 ZADOK 33 3 TRI ZADOK 33 ZADOK 33 ZADOK 33 ZADOK 33 Crop Stage Scale 36 CM 67.8 CM 10.1 CM 67.8 CM 67.8 CM 67.8 CM 67.8 CM Weed Stage 1 LEAF 7 LEAF 2 LEAF 4 LEAF Weed Density, Unit 1 M2 4 M2 29 M2 19 M2 Trt-Eval Interval 7 DAT 28 DAT 28 DAT 28 DAT 28 DAT 28 DAT 28 DAT 1 Untreated Check 0 a 0 a 0 a 0 b 0 b 0 b 0 b 2 bromoxynil/mcpa 560 EC 560 G A/HA POST A 0 a 0 a 0 a 100 a 100 a 100 a 100 a 3 bromoxynil/mcpa 560 EC 560 G A/HA POST A 0 a 0 a 0 a 100 a 100 a 100 a 99 a LSD (P=.05) Standard Deviation CV Weed Code AMBEL HIBTR CHEAL SINAR AMARE POLLA AMBEL Crop Code AVESA AVESA AVESA AVESA AVESA AVESA AVESA CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Jun Jun Jul Jul Jul Jul Jul Crop Stage ZADOK 33 ZADOK 33 ZADOK 73 ZADOK 73 ZADOK 73 ZADOK 73 ZADOK 73 Crop Stage Scale 67.8 CM 67.8 CM CM CM CM CM CM Weed Stage 6 LEAF 1 LEAF 4 LEAF 4 LEAF 3 LEAF 6 LEAF 7 LEAF Weed Density, Unit 106 M2 45 M2 0.8 M2 0.8 M2 11.8M2 7.8 M2 71 M2 Trt-Eval Interval 28 DAT 28 DAT 56 DAT 56 DAT 56 DAT 56 DAT 56 DAT 1 Untreated Check 0 b 0 b 0 b 0 b 0 b 0 b 0 b 2 bromoxynil/mcpa 560 EC 560 G A/HA POST A 90 a 90 a 100 a 100 a 100 a 99 a 91 a 3 bromoxynil/mcpa 560 EC 560 G A/HA POST A 88 a 79 a 100 a 100 a 100 a 98 a 93 a LSD (P=.05) Standard Deviation CV

2 THE EFFECT OF FOLIAR FERTILIZERS ON HERBICIDE EFFICACY AND OAT YIELD I Experiment ID: OT04C1A Weed Code HIBTR SOLSA Crop Code AVESA AVESA AVESA AVESA AVESA CONTROL CONTROL MOISTURE YIELD YIELD Rating Unit % % % T/HA BU/AC Jul Jul Aug Aug Aug Crop Stage ZADOK 73 ZADOK 73 Crop Stage Scale CM CM Weed Stage 2 LEAF 4 LEAF Weed Density, Unit 40 M2 3.5 M2 Trt-Eval Interval 56 DAT 56 DAT 87 DAT 87 DAT 87 DAT 1 Untreated Check 0 b 0 b 13.4 a 4.0 b b 2 bromoxynil/mcpa 560 EC 560 G A/HA POST A 90 a 100 a 13.0 a 4.9 a a 3 bromoxynil/mcpa 560 EC 560 G A/HA POST A 85 a 100 a 12.5 a 5.0 a a LSD (P=.05) Standard Deviation CV Trial Comments CONCLUSIONS: There was no crop injury in oats and underseeded red clover with the postemergence application of bromoxynil/mcpa with and without crop booster. The application of bromoxynil/mcpa provided good to excellent control of CHEAL, SINAR, AMARE, POLLA, AMBEL, HIBTR and SOLSA. There was no effect on weed control with the addition of crop booster. The application of bromoxynil/mcpa resulted in a significant increase in the yield of oats. There was no effect on oat yield with the addition of crop booster

3 THE EFFECT OF FOLIAR FERTILIZERS ON HERBICIDE EFFICACY AND OAT YIELD II Experiment ID: OT04C1B CROP: AVESA, OAT, SPRING (IRISH). Planted: Apr-16-04, 110 KG/HA, 5 CM Deep, 17.5 CM Row Width. Planting Method: DOUBLE DISK DRILL. Emerged On: Apr TRFPR, CLOVER, RED (SINGLE CUT, COMMON). Planted: Apr-16-04, 5 KG/HA, 0.5 CM Deep Planting Method: DOUBLE DISK DRILL. FIELD Site. Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 44 M. Expt. Location: HRS - Range S17. Site Description: Soil Texture: MEDIUM. %OM: 4.3 %Sand: 44 %Silt: 33 %Clay: 23 ph: 7.7 CEC: 28. APPLICATION DESCRIPTION STAGE AT APPLICATION Application: A Application: A Date : May Crop 1 AVESA ZADOK 12 Time of Day: 7:38 AM Height : 12 CM Method : CO2 SPRAY Crop 2 TRFPR UNIFOLIATE Timing : POST Height : 1.5 CM Placement : FOLIAR Air Temp. : 20.7 C Weed 1 CHEAL 2 LEAF % Humidity : 74 Stg.Scale: 1.7 CM Wind Speed : 1.8 KM/H Density : 25.6 M2 Dew Present: Y Weed 2 SINAR 4 LEAF Soil Moist.: SB-W SF-M Stg.Scale: 2.3 CM Cloud Cover: 25% Density : 1.6 M2 Equipment : CO2 SPRAY Weed 3 AMARE COTYLEDON Pressure : 241 kpa Stg.Scale: 0.7 CM Nozzle Type: FLAT FAN Density : 45 M2 Nozzle Size: 8002 VS Weed 4 POLLA 2 LEAF Noz.Spacing: 50 CM Stg.Scale: 1 CM Boom Length: 2 M Density : 7 M2 Boom Height: 50 CM Weed 5 POLPE Carrier : WATER Stg.Scale: Appl.Volume: 200 L/HA Density : Propellant : CO2 Weed 6 AMBEL 2 LEAF Stg.Scale: 2.3 CM Density : 51 M2 Weed 7 POLCO 1 LEAF Stg.Scale: 3.1 CM Density : 8 M2 Weed 8 CAPBP 4 LEAF Stg.Scale: 0.83 CM Density : 3 M2 Weed 9 ERYCH Stg.Scale: Density : Weed Code CHEAL SINAR AMARE POLLA Crop Code AVESA AVESA TRFPR AVESA AVESA AVESA AVESA INJURY INJURY INURY CONTROL CONTROL CONTROL CONTROL May Jun Jun Jun Jun Jun Jun Crop Stage 26 CM 27 CM 7 CM 27 CM 27 CM 27 CM 27 CM Crop Stage Scale ZADOK 14 ZADOK 27 4 TRI ZADOK 27 ZADOK 27 ZADOK 27 ZADOK 27 Weed Stage 3 LEAF 4 LEAF 3 LEAF 2 LEAF Weed Density, Unit 18 M2 1 M2 3 M2 2 M2 Trt-Eval Interval 7 DAT 28 DAT 28 DAT 28 DAT 28 DAT 28 DAT 28 DAT 1 Untreated Check 0 a 0 a 0 a 0 b 0 b 0 b 0 b 2 bromoxynil/mcpa 560 EC 560 G A/HA POST A 0 a 0 a 0 a 99 a 100 a 100 a 100 a 3 bromoxynil/mcpa 560 EC 560 G A/HA POST A 0 a 0 a 0 a 100 a 100 a 100 a 99 a LSD (P=.05) Standard Deviation CV Weed Code AMBEL POLCO ERYCH CHEAL SINAR AMARE POLLA Crop Code AVESA AVESA AVESA AVESA AVESA AVESA AVESA CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Jun Jun Jun Jul Jul Jul Jul Crop Stage 27 CM 27 CM 27 CM CM CM CM CM Crop Stage Scale ZADOK 27 ZADOK 27 ZADOK 27 ZADOK 75 ZADOK 75 ZADOK 75 ZADOK 75 Weed Stage 7 LEAF 5 LEAF 11 LEAF 5 LEAF 8 LEAF 4 LEAF 7 LEAF Weed Density, Unit 44 M2 17 M2 10 M2 7 M2 1 M2 4 M2 2 M2 Trt-Eval Interval 28 DAT 28 DAT 28 DAT 56 DAT 56 DAT 56 DAT 56 DAT 1 Untreated Check 0 b 0 b 0 b 0 b 0 b 0 b 0 b 2 bromoxynil/mcpa 560 EC 560 G A/HA POST A 88 a 91 a 100 a 100 a 100 a 100 a 100 a 3 bromoxynil/mcpa 560 EC 560 G A/HA POST A 93 a 96 a 100 a 100 a 100 a 100 a 100 a LSD (P=.05) Standard Deviation CV

4 THE EFFECT OF FOLIAR FERTILIZERS ON HERBICIDE EFFICACY AND OAT YIELD II Experiment ID: OT04C1B Weed Code AMBEL POLCO ERYCH Crop Code AVESA AVESA AVESA AVESA AVESA AVESA CONTROL CONTROL CONTROL MOISTURE YIELD YIELD Rating Unit % % % % T/HA BU/AC Jul Jul Jul Aug Aug Aug Crop Stage CM CM CM Crop Stage Scale ZADOK 75 ZADOK 75 ZADOK 75 Weed Stage 7 LEAF 7 LEAF 5 LEAF Weed Density, Unit 76 M2 9 M2 3 M2 Footnote Number Trt-Eval Interval 56 DAT 56 DAT 56 DAT 99 DAT 99 DAT 99 DAT 1 Untreated Check 0 b 0 b 0 b 13.3 a 3.9 a a 2 bromoxynil/mcpa 560 EC 560 G A/HA POST A 93 a 95 a 100 a 13.1 a 4.0 a a 3 bromoxynil/mcpa 560 EC 560 G A/HA POST A 93 a 98 a 100 a 12.9 a 4.0 a a LSD (P=.05) Standard Deviation CV Trial Comments CONCLUSIONS: There was no crop injury in oats and underseeded red clover with the postemergence application of bromoxynil/mcpa with and without crop booster. The application of bromoxynil/mcpa provided excellent control of CHEAL, SINAR, AMARE, POLLA, AMBEL, POLCO and ERYCH. There was no effect on weed control with the addition of crop booster. There was no effect on oat yield due to the herbicide treatments evaluated

5 POSTEMERGENCE BROADLEAF WEED CONTROL IN OATS Experiment ID: OT04C2 CROP: AVESA, OAT, SPRING (IRISH). Planted: Apr-16-04, 110 KG/HA, 5 CM Deep, 17.5 CM Row Width. Planting Method: DOUBLE DISK DRILL. Emerged On: Apr FIELD Site. Expt. Design: RANDOMIZED COMPLETE BLOCK. Reps: 4. Plot Size: 2 M x 44 M. Expt. Location: HRS - Range S17. Site Description: Soil Texture: MEDIUM. %OM: 4.3 %Sand: 44 %Silt: 33 %Clay: 23 ph: 7.7 CEC: 28. APPLICATION DESCRIPTION STAGE AT APPLICATION Application: A Application: A Date : May Crop 1 AVESA ZADOK 12 Time of Day: 7:46 AM Height : 12.6 CM Method : CO2 SPRAY Timing : POST Weed 1 CHEAL 2 LEAF Placement : FOLIAR Stg.Scale: 1.8 CM Air Temp. : 21.5 C Density : 14 M2 % Humidity : 64 Weed 2 SINAR 4 LEAF Wind Speed : 2 KM/H Stg.Scale: 2.1 CM Dew Present: Y Density : 2 M2 Soil Moist.: SB-W SF-M Weed 3 AMARE COTYLEDON Cloud Cover: 25% Stg.Scale: 0.9 CM Equipment : CO2 SPRAY Density : 44 M2 Pressure : 241 kpa Weed 4 AMBEL 2 LEAF Nozzle Type: FLAT FAN Stg.Scale: 2.5 CM Nozzle Size: 8002 VS Density : 50 M2 Noz.Spacing: 50 CM Weed 5 POLCO 2 LEAF Boom Length: 2 M Stg.Scale: 1.6 CM Boom Height: 50 CM Density : 5 M2 Carrier : WATER Weed 6 ERYCH Appl.Volume: 200 L/HA Stg.Scale: Propellant : CO2 Density : Weed Code CHEAL AMARE AMBEL ERYCH Crop Code AVESA AVESA AVESA AVESA AVESA AVESA INJURY INJURY CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % % May Jun Jun Jun Jun Jun Crop Stage 25 CM 60 CM 60 CM 60 CM 60 CM 60 CM Crop Stage Scale ZADOK 24 ZADOK 31 ZADOK 31 ZADOK 31 ZADOK 31 ZADOK 31 Weed Stage 6 LEAF 4 LEAF 6 LEAF 10 LEAF Weed Density, Unit 7 M2 8 M2 28 M2 1 M2 Footnote Number 1 2 Trt-Eval Interval 7 DAT 28-DAT 28-DAT 28-DAT 28-DAT 28-DAT 1 Untreated Check 0 c 0 b 0 b 0 b 0 f 0 b 2 bromoxynil/mcpa (Badge) 450 EC 560 G A/HA POST A 0 c 0 b 100 a 100 a 99 ab 100 a 3 MCPA/meco/dicamba (Sword) 400 SL 400 G A/HA POST A 3 b 0 b 100 a 100 a 93 bc 99 a 4 MCPA/meco/dicamba (Sword) 400 SL 600 G A/HA POST A 7 a 0 b 100 a 100 a 84 d 100 a 5 UAP SL 450 G A/HA POST A 0 c 0 b 99 a 99 a 66 e 100 a 6 UAP SL 900 G A/HA POST A 0 c 0 b 100 a 100 a 83 d 99 a 7 UAP SL 1500 G A/HA POST A 0 c 0 b 100 a 100 a 89 cd 100 a 8 UAP SL 3000 G A/HA POST A 2 b 5 a 100 a 100 a 100 a 100 a LSD (P=.05) Standard Deviation CV Column 1 Footnote: TRT. 3 &4 INJURY SEEN AS LODGING AND DISTORTION TRT. 8 INJURY SEEN AS LEAF YELLOWING Column 2 Footnote: INJURY SEEN AS REDUCED GROWTH Weed Code CHEAL AMARE AMBEL POLCO Crop Code AVESA AVESA AVESA AVESA AVESA AVESA CONTROL CONTROL CONTROL CONTROL MOISTURE YIELD Rating Unit % % % % % T/HA Jul Jul Jul Jul Aug Aug Crop Stage 112 CM 112 CM 112 CM 112 CM Crop Stage Scale ZADOK 75 ZADOK 75 ZADOK 75 ZADOK 75 Weed Stage 5 LEAF 4 LEAF 6 LEAF 8 LEAF Weed Density, Unit 6 M2 20 M2 59 M2 4 M2 Trt-Eval Interval 56-DAT 56-DAT 56-DAT 56-DAT 95 DAT 95 DAT 1 Untreated Check 0 b 0 b 0 c 0 b 13.3 a 4.1 b 2 bromoxynil/mcpa (Badge) 450 EC 560 G A/HA POST A 100 a 100 a 95 a 98 a 12.6 b 4.2 b 3 MCPA/mecoprop/dicamba (Sword) 400 SL 400 G A/HA POST A 98 a 100 a 99 a 98 a 12.6 b 4.5 ab 4 MCPA/mecoprop/dicamba (Sword) 400 SL 600 G A/HA POST A 100 a 100 a 99 a 100 a 12.7 b 4.4 ab 5 UAP SL 450 G A/HA POST A 100 a 98 a 75 b 95 a 12.6 b 4.8 a 6 UAP SL 900 G A/HA POST A 99 a 100 a 94 a 98 a 12.6 b 4.3 ab 7 UAP SL 1500 G A/HA POST A 99 a 100 a 96 a 100 a 12.6 b 4.2 ab 8 UAP SL 3000 G A/HA POST A 100 a 100 a 100 a 100 a 12.5 b 4.2 b LSD (P=.05) Standard Deviation CV

6 POSTEMERGENCE BROADLEAF WEED CONTROL IN OATS Experiment ID: OT04C2 Crop Code AVESA YIELD Rating Unit BU/AC Aug Trt-Eval Interval 95 DAT 1 Untreated Check b 2 bromoxynil/mcpa (Badge) 450 EC 560 G A/HA POST A b 3 MCPA/meco/dicamba (Sword) 400 SL 400 G A/HA POST A ab 4 MCPA/meco/dicamba (Sword) 400 SL 600 G A/HA POST A ab 5 UAP SL 450 G A/HA POST A a 6 UAP SL 900 G A/HA POST A ab 7 UAP SL 1500 G A/HA POST A ab 8 UAP SL 3000 G A/HA POST A b LSD (P=.05) Standard Deviation CV 9.73 Trial Comments CONCLUSIONS: There was no commercially significant visual crop injury in oats with the postemergence herbicides evaluated. The application of bromoxynil/mcpa provided excellent control of ERYCH, CHEAL, AMARE, AMBEL and POLCO. The application of MCPA/mecoprop/dicamba provided excellent control of ERYCH, CHEAL, AMARE, AMBEL and POLCO at both rates evaluated. UAP 0401 provided excellent control of ERYCH, CHEAL, AMARE and POLCO at all four rates evaluated. The control of AMBEL was rate dependent with poorer control observed at the low rate. Oat yields were equivalent to or greater than the weedy check with the herbicides evaluated. There was a trend to reduced yield of oats as the rate of MCPA/mecoprop/dicamba and UAP 0401 was increased