Barley grass control in a three year rotation at Esperance

2020

Research organisatons

Trial details

Researcher(s) N/A
Contact email catherine.borger@dpird.wa.gov.au
Contact phone 0467816082
Year(s) 2020
Contributor Department of Primary Industries and Regional Development WA
Trial location(s) Esperance, WA
Barley grass control in a three year rotation at Esperance locations
Aims

Barley grass is becoming an increasingly problematic weed in Western Australia. A GRDC funded project sought to increase adoption of integrated weed management tactics for barley grass, by working with grower groups to develop regionally appropriate rotations for optimal control. A survey indicated that in southwest Australia, many growers thought their barley grass was resistant to grass selective herbicides and may have developed late germination to avoid pre-seeding herbicides. In this area barley grass was a major problem in pastures, and often in break crops too.

 

A three year trial aimed to investigate pre-emergent herbicides and autumn tickle in wheat in 2019, pre-emergent herbicides and crop density in barley in 2020 and grass selective herbicides and crop topping in pasture in 2021.

Key messages

In 2019, herbicides ensured that barley grass density was low throughout the trial.

In spite of good crontrol in 2019, there was high barley grass density in 2020, potentailly from the 2019 seed production and dormant seed bank.

The 2020 use of Intercept® herbicide reduced barley grass across the whole trial, with higher crop yield following Intercept® at 500 mL/ha compared to 375mL/ha.

Lead research organisation South East Premium Wheat Growers Association
Host research organisation Department of Agriculture and Food WA
Related program Demonstrating and validating the implementation of integrated weed management strategies to control barley grass in the low rainfall zone farming system
Acknowledgments

We would like to thank the Harris family for providing a site and running the trial, and Niki Curtis (SEPWA), Andrea Carmody (SEPWA), Greg Warren (Farm & General) and Pete Gray (DPIRD) for their assistance with the trial management and measurements. The trial was sponsored by BASF (who provided Luximax® herbicide).


Other trial partners University of Adelaide

Method

Crop type Cereal (Grain): Barley
Treatment type(s)
  • Herbicide
Trial type
Trial design

Esperance 2020

Sow rate or Target density 40 or 65 kg/ha
Sowing machinery

Bulk sown with grower's machinery.

Sow date 30 April 2020
Harvest date 18 November 2020
Plot size 36m x 1400m
Plot replication 4
Plot blocking Yes
Plot randomisation Randomised block design
Fertiliser

29 June 2020. Zn, Mn

Flexi N 50L/ha

Herbicide

30 April 2020. Treflan® 2L/ha

29 June 2020. Intercept® 375 or 500mL/ha

Esperance 2020

Sow rate or Target density Not specified
Sowing machinery Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Plot blocking Not specified
Plot randomisation Not specified
Fertiliser Not specified
Herbicide 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
Esperance, WA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Esperance, WA Sodosol
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.

Esperance WA

NOTE: Exact trial site locality unknown - Climate data may not be accurate
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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: 17-03-2023 09:28am AEST