Crop-topping or desiccation effects on weed control and seed quality

2009
CC BY 4.0

Research organisatons
Funding sources

Trial details

Researcher(s) Jason Brand (DPIVic)
Luke Gaynor (IINSW)
Larn McMurray (SARDI)
Year(s) 2009
Contributor Southern Pulse Agronomy
Trial location(s) Balaklava, SA
Turretfield, SA
Crop-topping or desiccation effects on weed control and seed quality locations
Aims

To assess wether recent field pea breeding advancements in resistance to blackspot are significant enough to allow management changes to sowing time in this crop.

Key messages
  • The dry and hot November in 2009 led to early senescence of pulse varieties and reduced
    grain yields in later maturing varieties. Many responses to the crop-topping treatments may
    have been masked by this rapid senescence eg Almaz and GenesisTM114 chickpeas.
  • Some surprising results were observed in 2009, which may be due to either genetic
    responses or responses to rapid finish to the season eg forage pea grain weights.
  • Field peas and Faba beans generally showed no yield loss at the recommended timing for
    crop-topping of ryegrass in 2009. Lentils and chickpeas showed significantly higher yield
    losses from crop-topping, averaging 15 and 21% yield losses respectively at this timing.
  • The large biomass, mid-late maturing lentil Boomer also showed a yield loss when croptopped later than recommended for ryegrass control. These results indicate poor suitability of some lines to this agronomic practice.
  • Early maturing lentil and chickpea lines showed yield losses from this practice at the
    recommended timing. This demonstrates the difficulty in employing this weed control
    technique in these crop types.
  • The early crop topping treatment reduced grain yields of most pulse varieties. Field peas
    OZP0602 and Yarrum at Turretfield, and the Faba bean AFO3001 showed no difference in
    grain yield at the early cop-top timing and the nil, indicating good suitability to this practice.
Lead research organisation Department of Primary Industries VIC
Host research organisation N/A
Trial funding source GRDC
Trial funding source DPIVic
Trial funding source SARDI
Trial funding source DPI NSW
Related program Southern Pulse Agronomy
Acknowledgments

Key contributors:
The authors wish to thank the contributions of the following people to this project:

  • Russel Argall, Jason Ellifson and Justine Ellis, DPI – Horsham
  • Jenny Davidson, SARDI
  • Peter Matthews and Eric Armstrong, II NSW


Acknowledgements:
The authors wish to acknowledge the support and assistance of the following people:

  • Michael Materne, Kristy Hobson and Tony Leonforte, PBA, DPI – Horsham.
  • Jeff Paull, PBA, Uni of Adelaide.
  • Ian Menz, II NSW

The assistance and help of John Nairn, Peter Maynard, Mark Bennie, Rowan Steele and Stuart
Sherriff, SARDI Clare, with trial management is gratefully acknowledged.


Other trial partners SARDI, The University of Adelaide, DPI NSW
Download the trial report to view additional trial information

Method

Crop types Chickpeas
Field peas
Lentils
Treatment type(s)
  • Variety
  • Variety: Type
Trial type
Trial design

Balaklava 2009 Chickpeas

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

Balaklava 2009 Field peas

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

Balaklava 2009 Lentils

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

Turretfield 2009 Field peas

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

Turretfield 2009 Lentils

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

Turretfield 2009 Chickpeas

Sow date 29 May 2009
Harvest date Not specified
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
Balaklava, SA Not specified
Turretfield, SA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Balaklava, SA Calcarosol
Turretfield, SA 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 Balaklava SA Turretfield SA
2009 480.7mm
2008 458.0mm
2007 494.4mm
2006 509.2mm
2005 508.3mm
2004 480.4mm
2003 501.8mm
2002 481.7mm
2001 496.5mm
2000 479.4mm
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

Loading

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.

Balaklava SA

Turretfield SA

Balaklava SA

Loading
Loading
Loading

Turretfield SA

NOTE: Exact trial site locality unknown - Climate data may not be accurate
Loading
Loading
Loading

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 last modified: 28-08-2019 14:34pm AEST