Investigation of nozzle type on herbicide efficacy

2001

Research organisaton

Trial details

Researcher(s) N/A
Year(s) 2001
Contributor Birchip Cropping Group
Trial location(s) Birchip, VIC
Investigation of nozzle type on herbicide efficacy locations
Aims

To investigate the effect that four different nozzle types had on spray efficacy using herbicides with different modes of action.

Key messages

This demonstration has highlighted the impact poor nozzle selection can have on herbicide efficacy. Generally all post emergent herbicide applications are made with the one nozzle type, as a result, less than optimal weed control may occur. It was found that selecting a nozzle with a fine droplet pattern and good coverage gave best results for contact herbicides (Brodal and Bromoxynil) and for those poorly translocated within plants (Group A herbicides). For LVE MCPA, which moves readily through the plant, coverage is not essential allowing larger droplet size nozzles to be used without losing efficacy. This is important for preventing drift, as phenoxy herbicides such as LVE MCPA are susceptible to drift. Understanding how herbicides work will allow for better nozzle selection and more cost effective weed control.

Lead research organisation N/A
Host research organisation N/A
Related program N/A
Acknowledgments

Thanks to Hardi (Gold Sponsor) and TeeJet for supplying nozzles, test strips and technical support for this demonstration.


Other trial partners Not specified

Method

Crop type Cereal (Grain): Wheat
Trial type
Trial design

Birchip 2001

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Trial source data and summary not available
Check the trial report PDF for trial results.
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Birchip, VIC Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Birchip, VIC Vertosol
Soil Moisture Source: BOM/ANU
Average amount of water stored in the soil profile during the year, estimated by the OzWALD model-data fusion system.
Year Birchip VIC
2001 285.1mm
2000 290.6mm
National soil grid Source: CSIRO/TERN
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

Derived climate information

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

Birchip VIC

CAUTION: Trial site locality unknown; Climate data sourced from Birchip Cropping Group office location
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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 report and links


No trial reports or attachments found


Trial last modified: 06-08-2019 07:54am AEST