THE SELECTIVITY OF THE TANK MIXTURE OF ATTRIBUT SUPER AND THE PLANT GROWTH REGULATOR IN SPRING WHEAT

Transcription

1 Trial Report 2008 Herbicides REGULATOR IN SPRING WHEAT Study Director: Sanni Junnila Trial ID Location Crop Experimental starting and completion H Jokioinen Spring wheat May 12 th and October 14 th 2008 Purpose of trial: Evaluation of biological efficacy and selectivity of herbicides Attribut SG 70 and Sekator OD mixed with two plant growth regulators against grass and broad-leaved weeds in spring wheat in Finland in SUMMARY Attribut SG 70 (propoxycarbazone 700 g/kg) and Sekator OD (iodosulfuron 25 g/l +amidosulfuron 100 g/l +mefenpyr 250 g/l) are herbicides, which are the components of Attribut Super treatment. The selectivity and the efficacy on Elymus repens (AGGRE) and annual dicot weeds (TTTDD) were tested in one spring wheat trial in Jokioinen. The weed control capacity and the effect on yield of the tank mixtures of Attribut Super and plant growth regulators Hankkijan CCC (chlormequat-clorid 750 g/l) and Moddus M (trinexapacethyl 250 g/l) were investigated. Two rates of Hankkijan CCC (0.4 and 0.8 l/ha) and one dose of Moddus M (0.15 l/ha) were tested. Same doses of Attribut SG 70 (60 g/ha) and Sekator OD (100 ml/ha) were used in three Attribut Super treatments completed with Sito Plus (0.1 l/ha). Soil type was heavy clay and spring wheat (Triticum aestivum var. Kruunu) was sown May 12 th Spring wheat was sprayed in the evening of June 18 th. Air temperature was 14 C and humidity 69 RH %. There was no dew on crop but soil was damp. Spring wheat was 25 to 30 cm high and the average growth stage was the beginning of stem elongation (BBCH 30). AGGRE was 25 to 40 cm high and the growth stage varied from first tiller to two visible extended internodes (BBCH 21-32). Hankkijan CCC damaged spring wheat more than Moddus in Attribut Super tank mixture. Symptoms were the light colour of leaves and short growth stagnation. Colour change had vanished but crop shortening was visible two weeks after spraying. CCC and Moddus reduced the crop vigor 12 to 22 % and 6 to 11 %, respectively. The increase of CCC dose from 0.4 to 0.8 l/ha had no effect on vigor. Attribut Super and both doses of CCC reduced crop length by 11 % and significantly more than Moddus with Attribut Super, which decreased crop height also significantly 7 % (Figure 1). There were 295 AGGRE shoots per square meter in untreated spring wheat July 30 th and the air-dry biomass was g/sqm (Figure 2). Hankkijan CCC with Attribut Super controlled AGGRE slightly better than Attribut Super with Moddus but no significant difference between treatments was found. Attribut Super plus both doses of Hankkijan CCC reduced 74 % AGGRE number and 91 to 92 % AGGRE biomass. Tank mixture of Attribut Super and Moddus was less effective and the reduction in AGGRE number and biomass was 51 % 83 %, respectively. Attribut Super with CCC treatments left slightly less dicot weeds (TTTDD) than the Attribut Super and Moddus treatment. Attribut Super with CCC treatments reduced 94 to 97 % TTTDD number and with Moddus 88 %. Reduction of TTTDD biomass was 97 to 100 % in Attribut Super with CCC treatments and 93 % when growth regulator was Moddus (Figure 3). Hankkijan CCC and Moddus M with Attribut Super increased the grain yield of spring wheat 52 % and 56 %, respectively (untreated totally unsprayed). Increase in CCC dose (0.4 to 0.8 l/ha) had no effect on grain yield. CCC treatments had significantly (2 %) lower hectolitre weight than Moddus and untreated. Both plant growth regulators in Attribut Super tank mixtures reduced significantly (4 to 6 %) the weight of 1000 grains and the higher dose of CCC significantly more than Moddus.

2 Trial Report 2008 Herbicides Untreatd Attribut 60 G/HA A;Sekator 100 ML/HA A;CCC 0.4 L/HA A;SP Attribut 60 G/HA A;Sekator 100 ML/HA A;CCC 0.8 L/HA A;SP Attribut 60 G/HA A;Sekator 100 ML/HA A;Moddus 0.15 L/HA A;SP Trial ID: H LENGTH cm Figure 1. The crop length of spring wheat in Attribut Super and plant growth regulator trial (H ) in Jokioinen. Untreated Attribut 60 G/HA A;Sekator 100 ML/HA A; CCC 0.4 L/HA A;SP Attribut 60 G/HA A;Sekator 100 ML/HA A; CCC 0.8 L/HA A;SP Attribut 60 G/HA A;Sekator 100 ML/HA A;Moddus M 0.15 L/HA A;SP Trial ID: H AGRRE no/sqm AGRRE g/sqm Figure 2. The numbers and the air-dry weights of Elymus repens (AGRRE) shoots per square metre in spring wheat trial of Attribut Super with the plant growth regulators (H ) in Jokioinen. Untreated Attribut 60 G/HA A;Sekator 100 ML/HA A; CCC 0.4 L/HA A;SP Attribut 60 G/HA A;Sekator 100 ML/HA A; CCC 0.8 L/HA A;SP Attribut 60 G/HA A;Sekator 100 ML/HA A;Moddus M 0.15 L/HA A;SP Trial ID: H TTTDD no/sqm TTTDD g/sqm Figure 3. The numbers and the air-dry weights of the dicot weeds in total (TTTDD) per square metre in spring wheat trial of Attribut Super with the plant growth regulators (H ) in Jokioinen.

3 10/09/08 (H ) Confidential Trial Treatments Page 1 of 1 Trt Treatment Form Form Lot Rate Appl No. Name Conc Type Code Rate Unit Code 1 Untreated -Not treated check 2 Attribut 70 SG 700 SG EFKE g/ha A -propoxycarbazone g AI Sekator OD 375 OD EFIB ml/ha A -iodosulfuron g AI -amidosulfuron g AI -mefenpyr g AI Hankkijan CCC 750 SL l/ha A -klormekvattikloridi g AI Sito Plus SL l/ha A 3 Attribut 70 SG 700 SG EFKE g/ha A -propoxycarbazone g AI Sekator OD 375 OD EFIB ml/ha A -iodosulfuron g AI -amidosulfuron g AI -mefenpyr g AI Hankkijan CCC 750 SL l/ha A -klormekvattikloridi g AI Sito Plus SL l/ha A 4 Attribut 70 SG 700 SG EFKE g/ha A -propoxycarbazone g AI Sekator OD 375 OD EFIB ml/ha A -iodosulfuron g AI -amidosulfuron g AI -mefenpyr g AI Moddus M 250 EC SMO6B l/ha A -trinexapac-ethyl g AI Sito Plus SL l/ha A Replications: 4, Untreated treatments: 1, Conduct under GLP/GEP: Yes (GEP with audit trail), Design: Randomised Complete Block, Treatment units: Treated plot size, Dry Form. Unit: g/kg, Treated plot size Width: 3 meters, Treated plot size Length: 8 meters, Application volume: 200 l/ha, Mix size: 3 litres, Format definitions: G-All7.DEF, G-All7.FRM

4 09/09/08 (H ) Confidential Site Description Page 1 of 3 General Trial Information Study Director: Sanni Junnila Title: Customer Manager Affiliation: Postal Code: FIN sanni.junnila@mtt.fi Trial Location City: Jokioinen Trial Status: ONE-YEAR/FINAL Postal Code: FI Country: FIN Planned Completion Date: 15/12/08 E-Longitude of LL Corner : N-Latitude of LL Corner : Directions: Map Datum: WGS 84 Conducted Under GEP: X Guideline Description 1. PP 1/152(2) Design and analysis of efficacy evaluation trials 2. PP 1/181(2) Conduct and reporting of efficacy evaluation trials 3. PP 1/144(2) Reduction of lodging in cereals 4. PP 1/93(2) Weeds in cereals Objectives: Evaluation of the biological efficacy and selectivity of Attribut 70 SG and Sekator OD with a Plant Growth Regulator in spring wheat Conclusions: Crop Description Crop 1: TRZAS Triticum aestivum (spring) Spring wheat Variety: KRUUNU BBCH Scale: BCER Planting Date: 12/05/08 Planting Method: SEEDED Rate, Unit: 190 KG/HA Depth, Unit: 5 CM Row Spacing, Unit: 12.5 CM Seed Bed: FINE Soil Moisture: DRY Pest Description Pest 1 Type: W Code: AGRRE Elymus repens Common Name: Couchgrass Pest 2 Type: W Code: GAESS Galeopsis sp. Common Name: Hempnettle Pest 3 Type: W Code: STEME Stellaria media Common Name: Common chickweed Pest 4 Type: W Code: PHLPR Phleum pratense Common Name: Herdsgrass Site and Design Plot Width, Unit: 3 M Site Type: FIELD Plot Length, Unit: 8 M Tillage Type: CONVENTIONAL-TILL Replications: 4 Study Design: Randomized Complete Block Trial Initiation Comments:

5 09/09/08 (H ) Confidential Site Description Page 2 of 3 Maintenance Maintenance Form Form Form Rate No. Date Treatment Name Conc Unit Type Rate Unit 1. 12/05/08 Pellon Y3 (N:21 P:3 K:9) 350 KG/HA 2. 07/07/08 Acanto Prima 1 KG/HA Field Prep./Maintenance: Soil Description Texture: HEAVY CLAY ph: 5.85 Moisture Conditions Overall Moisture Conditions: See the appendix of weather data Closest Weather Station: Jokioinen Distance: 7.0 Unit: KM Application Description A Application Date: 18/06/08 Time of Day: 21:45 Application Method: SPRAY Application Placement: BROFOL Applied By: AM,ME,SJ Air Temperature, Unit: 14 C % Relative Humidity: 69 Wind Velocity, Unit: 1.0 M/S Dew Presence (Y/N): N Soil Moisture: DAMP % Cloud Cover: 30 Crop Stage At Each Application A Crop 1 Code, BBCH Scale: TRZAS BCER Stage Scale Used: BBCH Stage Majority, Percent: 30 Height, Unit: 27.5 CM Height Minimum, Maximum: 25 30

6 09/09/08 (H ) Confidential Site Description Page 3 of 3 Pest Stage At Each Application A Pest 1 Code, Disc., Scale: AGRRE W BBCH Stage Majority, Percent: Height, Unit: 33 CM Height Minimum, Maximum: Pest 2 Code, Disc., Scale: GAESS W BBCH Stage Majority, Percent: Height, Unit: 6 CM Height Minimum, Maximum: 2 10 Pest 3 Code, Disc., Scale: STEME W BBCH Stage Majority, Percent: Height, Unit: 2 CM Height Minimum, Maximum: 1 3 Pest 4 Code, Disc., Scale: PHLPR W BBCH Stage Majority, Percent: Height, Unit: 45 CM Height Minimum, Maximum: Application Equipment A Appl. Equipment: KSU9 Operating Pressure: 2.3 Pressure Unit: BAR Nozzle Type: Hardi4110 Nozzle Size: 12 Nozzle Spacing, Unit: 50 CM Boom Length, Unit: 3 M Boom Height, Unit: 50 CM Ground Speed, Unit: 1 M/S Spray Volume: 200 Volume Unit: L/HA Propellant: AIR

7 24/10/08 (H ) Confidential AOV Means Table Page 1 of 2 Pest Type W Weed W Weed Pest Code AGRRE AGRRE Crop Code TRZAS TRZAS TRZAS TRZAS TRZAS TRZAS BBCH Scale BCER BCER BCER BCER BCER BCER Part Rated PLANT PLANT PLANT PLANT PLANT PLACUT PLACUT GRAIN Rating Date 23/06/08 25/06/08 02/07/08 09/07/08 22/08/08 30/07/08 30/07/08 23/09/08 Rating Data Type PHYGEN PHYGEN VIGOR VIGOR LENGTH COUPLA WEIDRY YIELD Rating Unit percent percent percent percent cm no/sqm g/sqm kg/ha Crop Stage Crop Stage Scale BBCH BBCH BBCH BBCH Assessed By SJ SJ SJ SJ ME AM AM TR Days After Last Applic Trt-Eval Interval 5 DA-A 7 DA-A 14 DA-A 21 DA-A 65 DA-A 42 DA-A 42 DA-A 97 DA-A ARM Action Codes APOC APOC APOC TY3 APOC Number of Decimals Trt Treatment Rate Appl No. Name Rate Unit Code Untreated 0 d 0 d 100 a 100 a 92 a 295 a a 3118 b (100%) (100%) (100%) (100%) 2 Attribut 70 SG 60 G/HA A 5 a 9 a 88 c 79 c 82 c 76 b 17.0 b 4752 a Sekator OD 100 ML/HA A (89%) (26%) (8%) (152%) Hankkijan CCC 0.4 L/HA A 3 Attribut 70 SG 60 G/HA A 3 b 7 b 88 c 78 c 81 c 77 b 18.4 b 4725 a Sekator OD 100 ML/HA A (89%) (26%) (9%) (152%) Hankkijan CCC 0.8 L/HA A 4 Attribut 70 SG 60 G/HA A 2 c 5 c 94 b 89 b 86 b 144 b 35.1 b 4872 a Sekator OD 100 ML/HA A (93%) (49%) (17%) (156%) Moddus M 0.15 L/HA A LSD (P=.05) Standard Deviation CV Bartlett's X P(Bartlett's X2) * Replicate F Replicate Prob(F) Treatment F Treatment Prob(F) Means followed by same letter do not significantly differ (P=.05, Student-Newman-Keuls) Mean comparisons performed only when AOV Treatment P(F) is significant at mean comparison OSL. Column 8: TY3 = *[C22]*(100-[C33])/85

8 24/10/08 (H ) Confidential AOV Means Table Page 2 of 2 Pest Type Pest Code Crop Code TRZAS TRZAS BBCH Scale BCER BCER Part Rated GRAIN GRAIN Rating Date 06/10/08 14/10/08 Rating Data Type HLWEIG 1000WEIG Rating Unit kg g Crop Stage Crop Stage Scale Assessed By TR TR Days After Last Applic Trt-Eval Interval 110 DA-A 118 DA-A ARM Action Codes T6 APOC T5 APOC Number of Decimals 1 1 Trt Treatment Rate Appl No. Name Rate Unit Code Untreated 77.1 a 34.6 a (100%) (100%) 2 Attribut 70 SG 60 G/HA A 75.9 b 33.2 bc Sekator OD 100 ML/HA A (98%) (96%) Hankkijan CCC 0.4 L/HA A 3 Attribut 70 SG 60 G/HA A 75.6 b 32.4 c Sekator OD 100 ML/HA A (98%) (94%) Hankkijan CCC 0.8 L/HA A 4 Attribut 70 SG 60 G/HA A 77.1 a 33.6 b Sekator OD 100 ML/HA A (100%) (97%) Moddus M 0.15 L/HA A LSD (P=.05) Standard Deviation CV Bartlett's X P(Bartlett's X2) Replicate F Replicate Prob(F) Treatment F Treatment Prob(F) Means followed by same letter do not significantly differ (P=.05, Student-Newman-Keuls) Mean comparisons performed only when AOV Treatment P(F) is significant at mean comparison OSL. Column 9: T6 = ((100-[C33])*[C29])/85 Column 10: T5 = ((100-[C33])*[C26])/85

9 03/12/08 (H ) Confidential AOV Means Table Page 1 of 1 Pest Type W Weed W Weed W Weed W Weed W Weed W Weed W Weed W Weed W Weed W Weed W Weed W Weed W Weed W Weed Pest Code CAPBP VIOAR GAESS MYOAR LAPCO XXXDD TTTDD CAPBP VIOAR GAESS MYOAR LAPCO XXXDD TTTDD Part Rated PLACUT PLACUT PLACUT PLACUT PLACUT PLACUT PLACUT PLACUT PLACUT PLACUT PLACUT PLACUT PLACUT PLACUT Rating Date 30/07/08 30/07/08 30/07/08 30/07/08 30/07/08 30/07/08 30/07/08 30/07/08 30/07/08 30/07/08 30/07/08 30/07/08 30/07/08 30/07/08 Rating Data Type COUPLA COUPLA COUPLA COUPLA COUPLA COUPLA COUPLA WEIDRY WEIDRY WEIDRY WEIDRY WEIDRY WEIDRY WEIDRY Rating Unit no/sqm no/sqm no/sqm no/sqm no/sqm no/sqm no/sqm g/sqm g/sqm g/sqm g/sqm g/sqm g/sqm g/sqm Assessed By AM AM AM AM AM AM AM AM AM Days After Last Applic Trt-Eval Interval 42 DA-A 42 DA-A 42 DA-A 42 DA-A 42 DA-A 42 DA-A 42 DA-A 42 DA-A 42 DA-A 42 DA-A 42 DA-A 42 DA-A 42 DA-A 42 DA-A ARM Action Codes APOC APOC APOC APOC APOC APOC T1 APOC APOC APOC APOC APOC APOC APOC T2 APOC Number of Decimals Trt Treatment Rate Appl No. Name Rate Unit Code Untreated (100%) (100%) (100%) (100%) (100%) (100%) (100%) (100%) (100%) (100%) (100%) (100%) (100%) (100%) 2 Attribut 70 SG 60 g/ha A Sekator OD 100 ml/ha A (0%) (0%) (15%) (23%) (0%) (6%) (3%) (0%) (0%) (0%) (0%) (0%) (25%) (0%) Hankkijan CCC 0.4 l/ha A 3 Attribut 70 SG 60 g/ha A Sekator OD 100 ml/ha A (0%) (36%) (54%) (26%) (0%) (0%) (6%) (0%) (67%) (3%) (33%) (0%) (0%) (3%) Hankkijan CCC 0.8 l/ha A 4 Attribut 70 SG 60 g/ha A Sekator OD 100 ml/ha A (0%) (55%) (100%) (60%) (0%) (12%) (12%) (0%) (67%) (7%) (67%) (0%) (0%) (7%) Moddus M 0.15 l/ha A Column 7: T1 Column 14: T2

10 16/09/08 (H ) Confidential AOV Means Table Page 1 of 1 Pest Type W Weed W Weed W Weed W Weed W Weed W Weed Pest Code AGRRE AGRRE AGRRE TTTDD TTTDD TTTDD Crop Code TRZAS BBCH Scale BCER Part Rated PLACUT PLACUT PLACUT PLACUT PLACUT PLACUT PLANT Rating Date 30/07/08 30/07/08 30/07/08 30/07/08 30/07/08 30/07/08 22/08/08 Rating Data Type COUPLA WEIDRY WEIDRY COUPLA COUPLA WEIDRY LENGTH Rating Unit no/sqm g/sqm g/sqm no/sqm no/sqm g/sqm cm Days After Last Applic Trt-Eval Interval 42 DA-A 42 DA-A 42 DA-A 42 DA-A 42 DA-A 42 DA-A 65 DA-A ARM Action Codes APOC APOC TA[7] T1 APOC TL[14] T2 APOC APOC Number of Decimals Trt Treatment Rate Appl No. Name Rate Unit Code Untreated 295 a a 90.0 a 103 a 2 a 32.7 a 92 a (100%) (100%) (100%) (100%) (100%) 2 Attribut 70 SG 60 g/ha A 76 b 17.0 b 22.5 b 3 a 0 a 0.1 a 82 c Sekator OD 100 ml/ha A (26%) (8%) (3%) (0%) (89%) Hankkijan CCC 0.4 l/ha A 3 Attribut 70 SG 60 g/ha A 77 b 18.4 b 24.5 b 6 a 1 a 1.1 a 81 c Sekator OD 100 ml/ha A (26%) (9%) (6%) (3%) (89%) Hankkijan CCC 0.8 l/ha A 4 Attribut 70 SG 60 g/ha A 144 b 35.1 b 35.8 b 12 a 1 a 2.4 a 86 b Sekator OD 100 ml/ha A (49%) (17%) (12%) (7%) (93%) Moddus M 0.15 l/ha A LSD (P=.05) Standard Deviation CV Bartlett's X P(Bartlett's X2) * * * Replicate F Replicate Prob(F) Treatment F Treatment Prob(F) Means followed by same letter do not significantly differ (P=.05, Student-Newman-Keuls) Mean comparisons performed only when AOV Treatment P(F) is significant at mean comparison OSL. Column 3: TA[7] = Arcsine square root percent([7]) Column 4: T1 Column 5: TL[14] = LOG([14]+ 1) Column 6: T2