The effect of combinations of crop row spacing, seedbed utilisation and pre-emergence herbicides on ryegrass management in wheat

2021
CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) N/A
Contact email gurjeet.gill@adelaide.edu.au
Contact phone +61428592825
Year(s) 2021
Contributor School of Agriculture, Food and Wine - The University of Adelaide
Trial location(s) Roseworthy campus, University of Adelaide, SA
The effect of combinations of crop row spacing, seedbed utilisation and pre-emergence herbicides on ryegrass management in wheat locations
Aims

This trial aims to investigate the combinations of crop row spacing, seedbed utilisation (SBU) and herbicides on ryegrass management in wheat.

Key messages
  • While large differences in seedbed utilisation (SBU) were achieved with row spacing and seed boot treatments (7.9 – 22.1% SBU), it had a smaller impact on ARG suppression in this trial compared to previous trials.
  • Averaged across the row spacing and seed boot treatments, Boxer Gold (850 ARG plants/m2), Overwatch (118 ARG plants/m2) and Sakura (422 ARG plants/m2) reduced ARG plant density by 49%, 93% and 75%, respectively compared to the untreated control (1680 ARG plants/m2).
  • The 25cm row spacing had 17% lower ARG spike density than the 37.5cm row spacing treatment (P=0.007).
  • Boxer Gold reduced ARG spike density by 58% compared to the untreated control, whereas Overwatch and Sakura caused an 84% and 82% reduction in ARG spike density, respectively.
  • Grain yield in the 25 cm row spacing treatment (5.979 t/ha), was 14% greater than the yield in 37.5 cm row spacing treatment (5.243 t/ha).
Lead research organisation School of Agriculture, Food and Wine - The University of Adelaide
Host research organisation School of Agriculture, Food and Wine - The University of Adelaide
Trial funding source GRDC 9175134
Related program GRDC - Weeds
Acknowledgments

We thank GRDC for funding this research project.


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

Method

Crop types Weed: Ryegrass Cereal (Grain): Wheat
Treatment type(s)
  • Herbicide: Type
  • Sowing: Method
  • Sowing: Row Spacing
Trial type
Trial design

Roseworthy campus, University of Adelaide 2021 Ryegrass

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Roseworthy campus, University of Adelaide 2021 Wheat

Sow date 12 June 2021
Harvest date Not applicable
Plot size Not specified
Plot replication Not specified
Download the trial report to view additional method/treatment information
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
Roseworthy campus, University of Adelaide, SA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Roseworthy campus, University of Adelaide, SA Chromosol
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.

Roseworthy campus, University of Adelaide 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 report and links

2021 trial report



Trial last modified: 20-03-2023 16:33pm AEST