Effect of deep ripping on weeds and root lesion nematodes

2018

Research organisaton
Funding sources

Trial details

Researcher(s) Bindi Isbister
Bonnie Jupp
Contact email bindi.isbister@dpird.wa.gov.au
Year(s) 2018
Contributor Department of Primary Industries and Regional Development WA
Trial location(s) Geraldton, WA
Effect of deep ripping on weeds and root lesion nematodes locations
Aims
  1. Gain a better understanding of the impact of crop competition on rigid ryegrass (Lolium rigidum) and brome grass (Bromus spp.) quantities and seed set after deep ripping to raise awareness and improve management.
  2. Monitor for differences in Pratylenchus neglectus levels between ripped and un-ripped plots throughout the season.
Key messages
  • Deep ripping to 500mm increased plant biomass, tiller numbers and ultimately yield, by 500kg/ha
  • There was no significant difference in weed numbers between ripped and un-ripped treatments; however, weeds in the deep ripping treatment were bigger and had more seeds, therefore potentially a greater seed bank.
  • The root lesion nematode species P. neglectus population increased over the season with a ten times higher increase in un-ripped compared to ripped soil. 
Lead research organisation Department of Primary Industries and Regional Development WA
Host research organisation N/A
Trial funding source GRDC DAW00256
Trial funding source DPIRD WA FFPJP13
Related program Regional Research Agronomy
Acknowledgments

Thanks to DPIRD Sarah Collins for analysis of the soil RLN results.

Thanks to GRDC and DPIRD for co-investment in the 'Building Crop Protection and Production Agronomy R&D Capacity in regional Western Australia' project (DAW00256/DAW1512-001RTX)


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

Method

Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Soil Improvement
Trial type Experimental
Trial design Replicated

Geraldton 2018

Sow date Unknown
Harvest date Unknown
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
Geraldton, WA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Geraldton, WA Chromosol
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 Geraldton WA
2018 575.0mm
2017 572.1mm
2016 584.5mm
2015 579.4mm
2014 572.2mm
2013 577.6mm
2012 564.7mm
2011 591.4mm
2010 566.4mm
2009 569.5mm
2008 582.8mm
2007 544.9mm
2006 552.4mm
2005 577.0mm
2004 566.9mm
2003 572.9mm
2002 566.7mm
2001 562.2mm
2000 573.5mm
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.

Geraldton 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

Effect of deep ripping on weeds and root lesion nematodes 2018



Trial last modified: 16-12-2022 15:08pm AEST