Diuron for pre-emergent weed control in lupins


Research organisatons
Funding source

Trial details

Researcher(s) Peter Newman and Glenn Adam (Department of Agriculture)
Year(s) 2003
Contributor Liebe Group
Trial location(s) Site 5, Coorow, WA
Diuron for pre-emergent weed control in lupins locations

To evaluate Diuron as a broadleaf weed killer pre sowing of lupins and to evaluate some mixing partners to improve the control of grass weeds.

Key messages

Diuron appears to be safe when applied pre-sowing of lupins at label rates, as there was no difference in yield between the Simazine alone and Diuron alone treatments.


Lead research organisation Department of Agriculture and Food WA
Host research organisation N/A
Trial funding source GRDC
Related program N/A
Acknowledgments N/A
Other trial partners Not specified
Download the trial report to view additional trial information


Crop type Lupins
Treatment type(s)
  • Herbicide: Type
  • Herbicide: Rate
Trial type Experimental
Trial design Replicated

Coorow 2003

Sow date 22 May 2003
Harvest date Not specified
Plot size 40m x 5m
Plot replication 3

22nd May 2003 Knockdown – Spray.Seed 1.5 L/ha in 80 L water / ha 22nd May 2003 All herbicide treatments applied. Herbicides Used: Simazine 500 g/L; Diuron 500 g/L; Trifluralin 480 g/L; Dual Gold® (S-Metolachlor 960 g/L)

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Treatment 1
Grain yield (t/ha) Ryegrass density (plants/m2) Radish density (plants/m2)
1 Diuron 2 L/ha 1.66 17.9 0.9
2 Diuron 2 L/ha + Trifluralin 1.6 L/ha (768 gai) 1.79 3.4 1.6
3 Diuron 2 L/ha + Trifluralin 1.6 L/ha Pre + Dual Gold 500 mL/ha Pre Sowing 1.8 1.7 0.9
4 Diuron 2 L/ha + Trifluralin 1.6 L/ha Pre + Dual Gold 500 mL/ha PSPE 1.76 2.1 1.5
5 Diuron 2 L/ha Pre+ Dual Gold 500 mL/ha PSPE 1.63 18.8 1.4
6 Simazine 2 L/ha 1.65 41.7 0.5

Grain yield t/ha


Radish density plants/m2


Ryegrass density plants/m2

Observed trial site soil information
Trial site soil testing
Site Depth Type pH EC P K N A OC CAT
Site 5, Coorow, WA 0 - 10cm Red loam
Site 5, Coorow, WA 10 - 30cm Red loam
Soil conditions
Trial site Soil texture
Site 5, Coorow, WA Red loam
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 5, Coorow, WA Kandosol
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



Derived climate information

No observed climate data available for this trial.
Derived climate data is determined from trial site location and national weather sources.

Site 5, Coorow WA


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.

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