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The effect of grazing (cutting) and PGR application on grain yield of early sown wheat and comparison with May sowing

2010
CC BY 4.0

Research organisation
Funding source
Southern Farming Systems
<abbr title='Grains Research and Development Corporation'>GRDC</abbr>

Trial details

Researcher(s) Brett Davey (TIAR)
Geoff Dean (SFS/TIAR)
Year(s) 2010
Contributor Southern Farming Systems
Trial location(s) Nile, TAS
The effect of grazing (cutting) and PGR application on grain yield of early sown wheat and comparison with May sowing locations
Aims
  • To compare grain yields of early sown Revenue wheat (March) with grazed (cut) wheat sown at the same time and that sown at a more traditional time, May.
  • The effect of a plant growth regulator (PGR) on uncut early sown plots was also evaluated.
     
Key messages
  • A replicated trial was conducted to compare grain yield of early sown Revenue wheat (cut and uncut for fodder) with that sown at a more traditional time, May.
  • Both cutting and later sowing significantly reduced grain yield compared with the early sown uncut treatment.
  • The most significant effect was the ability of the early sown plots to better tolerate the very wet conditions. With a root system actively depleting moisture from the soil profile in late autumn the early sown treatments entered winter with a depleted soil moisture bank whereas May sown plots struggled over winter due to additional water logging.
  • March sown plots that were cut did not recover as well as in drier seasons. It is likely that the prolonged water-loggin created an addional stress on top of cutting to the detriment of crop recovery and grain yield.
Lead research organisation N/A
Host research organisation N/A
Trial funding source GRDC
Related program N/A
Acknowledgments

Michael Morrison for providing land and assistance; Rob Howard, Bec Fish, TIAR for technical assistance.

GRDC for funding.
Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Grazing : Application Method
  • Sowing : Timing
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Nile 2010

Sow date 24 March 2010
Harvest date 27 January 2011
Plot size 10m x 1.5m
Plot replication Not specified
Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Variety
 Treatment 1
Dry matter (t/ha)
1 █ Revenue █ May sown 7.9
2 █ Revenue █ March sown cut 12
3 █ Revenue █ March sown + PGR 18.7
4 █ Revenue █ March sown - PGR 19.4

Dry matter t/ha

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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Nile, TAS Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Nile, TAS Sodosol
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 Nile TAS
2010
2009
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2005
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2003
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2000

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.

Nile TAS

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

2010 trial report



Trial last modified: 31-10-2019 12:17pm AEST