Clethodim tolerance in canola

2013

Research organisatons
Funding source

Trial details

Researcher(s) Michael Zerner and Rob Wheeler (SARDI)
Year(s) 2013
Contributor Hart Field Site Group
Trial location(s) Site 5, Hart, SA
Clethodim tolerance in canola locations
Aims

To investigate the level of damage that may occur from clethodim applications and what factors might influence the degree of damage, over two seasons

Key messages

Grain yield losses of up to 40% can be caused by clethodim at particular rates and timings. Early application timings were the best to avoid crop damage. Variation does exist between herbicide tolerant crop types (Conventional, Clearfield and TT) and their level of sensitivity to clethodim

Lead research organisation South Australian Research and Development Institute
Host research organisation Hart Field Site Group
Trial funding source SAGIT S0713
Related program N/A
Acknowledgments

Funding support from SAGIT is gratefully acknowledged for this research


Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop type Canola
Treatment type(s)
  • Herbicide: Rate
  • Herbicide: Timing
  • Variety: Type
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Hart 2013

Sow date 18 May 2013 18 May 2013
Harvest date Not specified
Plot size 1.4m x 10m
Plot replication 3
Fertiliser

Seeding: 60kg/ha DAP 2% Zn, 11/7/13: 75L/ha UAN

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Variety
Treatment 1
Grain yield (t/ha)
1 ATR Gem Untreated control 1.65
2 ATR Gem Clethodim @ 0.5 L/ha applied at 4-leaf growth stage 1.57
3 ATR Gem Clethodim @ 1 L/ha applied at 4-leaf growth stage 1.63
4 ATR Gem Clethodim @ 0.5 L/ha applied at 8-leaf growth stage 1.68
5 ATR Gem Clethodim @ 1 L/ha applied at 8-leaf growth stage 1.67
6 ATR Gem Clethodim @ 0.25 L/ha applied at 4-leaf and 8-leaf growth stages (0.5 L/ha in total) 1.7
7 ATR Gem Clethodim @ 0.5 L/ha applied at 4-leaf and 8-leaf growth stages (1 L/ha in total) 1.7
8 ATR Gem Clethodim @ 0.5 L/ha applied at bud initiation (ie. first visible green buds) 1.57
9 ATR Gem Clethodim @ 1 L/ha applied at bud initiation 1.09
10 AV Garnet Untreated control 2.11
11 AV Garnet Clethodim @ 0.5 L/ha applied at 4-leaf growth stage 2.13
12 AV Garnet Clethodim @ 1 L/ha applied at 4-leaf growth stage 2.11
13 AV Garnet Clethodim @ 0.5 L/ha applied at 8-leaf growth stage 2
14 AV Garnet Clethodim @ 1 L/ha applied at 8-leaf growth stage 2.05
15 AV Garnet Clethodim @ 0.25 L/ha applied at 4-leaf and 8-leaf growth stages (0.5 L/ha in total) 2.07
16 AV Garnet Clethodim @ 0.5 L/ha applied at 4-leaf and 8-leaf growth stages (1 L/ha in total) 2.07
17 AV Garnet Clethodim @ 0.5 L/ha applied at bud initiation (ie. first visible green buds) 2.03
18 AV Garnet Clethodim @ 1 L/ha applied at bud initiation 1.94
19 Hyola 474CL Untreated control 2.06
20 Hyola 474CL 0.5 L/ha applied at 4-leaf growth stage 2.08
21 Hyola 474CL 1 L/ha applied at 4-leaf growth stage 2.02
22 Hyola 474CL 0.5 L/ha applied at 8-leaf growth stage 2
23 Hyola 474CL 1 L/ha applied at 8-leaf growth stage 2.04
24 Hyola 474CL 0.25 L/ha applied at 4-leaf and 8-leaf growth stages (0.5 L/ha in total) 2.14
25 Hyola 474CL 0.5 L/ha applied at 4-leaf and 8-leaf growth stages (1 L/ha in total) 2.1
26 Hyola 474CL 0.5 L/ha applied at bud initiation (ie. first visible green buds) 1.92
27 Hyola 474CL 1 L/ha applied at bud initiation 1.24

Grain yield t/ha


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 5, Hart, SA Calcarosol
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 5, Hart, SA Chromosol
National soil grid Source
NOTE: National Soil Grid data is aggregated information for background information on the wider area
Actual soil values can vary significantly in a small area and the trial soil tests are the most relevant data where available

Soil properties

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Climate

Site 5, Hart SA 2013


Observed climate information

Rainfall trial gsr (mm) 303mm

Derived climate information

Site 5, Hart SA

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Some data on this site is sourced from the Bureau of Meteorology

SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol 16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.



Trial last modified: 06-06-2019 14:25pm AEST