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Morawa trial - using Yield Prophet for tactical nitrogen responses

2011

Research organisation
North East Farming Futures

Trial details

Researcher(s) Brad Hortin (CSBP)
Luigi Moreschi (CSBP)
Year(s) 2011
Contributor North East Farming Futures
Trial location(s) , WA
Morawa trial - using Yield Prophet for tactical nitrogen responses locations
Aims
  • The asses whether Yield Prophet could help make a better nitrogen fertiliser decision using yield potentials and available stored moisture.
  • To evaluate the effectiveness of various Flexi-N application strategies.
Key messages
  • The last application of nitrogen was applied on the 20th July. At this stage Yield Prophet indicated that to meet full potential an application of nitrogen was required. The plant available water (PAW) was 37mm at this time giving us approximately 30 days before the crop became moisture stressed. This gave us confidence to apply nitrogen knowing that the crop would continue to grow well for 30 days even without rain.
  • This site was very responsive to Flexi-N. Three applications (banded, Z13, and Z30) of 40 L/ha Flexi-N in creased yield from 1.8 t/ha to 3.2 t/ha. The nitrogen use efficiency from applied Flexi-N was 27 kg grain/kg N.
  • There were early responses to 85 kg/ha Agstar before N supply became limiting.
  • Plant tests in July indicated that molybdenum (Mo) was deficient (as low as 68 ug/kg with 85 kg/ha Agstar Extra), so 100 g/ha sodium molybdate was applied across the trial.
  • Grain protein was low (8 to 9%) due to yield dilution. Grain tests showed marginal sulphur (S) concentrations (average 0.10 mg/kg) which may have been detrimental to baking quality characteristics such as dough strength and extensibility.
Lead research organisation N/A
Host research organisation N/A
Related program N/A
Acknowledgments
  • Jason Jewell
  • CSBP research staff, Luigi Moreschi – CSBP, Brad Hortin – CSBP
Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Fertiliser : Type
Trial type Experimental
Trial design Unknown

2011

Sow date 17 May 2011
Harvest date 22 November 2011
Plot size Not specified
Plot replication Not specified
Fertiliser
  • Z13 Flexi-N.
  • Z30 Flexi-N and 100 g/ha NaMo across the trial.
Herbicide

1.8 l/ha Treflan
Insecticide

300 ml Lorsban.
Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Treatment 1
Hectolitre weight (kg/hL) Protein (%) Screenings (%) Grain yield (t/ha)
1 █ No FN 78 8.5 3.4 1.42
2 █ No FN (banded) 78 8.8 2.8 1.83
3 █ 40 FN L/ha (banded) 78 8 2.7 2.47
4 █ 40 FN L/ha (banded) + 40 FN L/ha at Z13 78 8.8 3 2.9
5 █ 40 FN L/ha (banded) + 40 FN L/ha at Z13 and Z30 78 8.9 30 3.2
6 █ 28 FN L/ha (banded) 78 8.3 2.8 2.58
7 █ 40 FN L/ha (banded) + 50 FN L/ha at Z13 and Z30 79 8.9 2.8 3.29

Grain yield t/ha

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Hectolitre weight kg/hL

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Protein %

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Screenings %

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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
, WA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
, WA Kandosol
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 WA
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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.

WA

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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

2011 trial report



Trial last modified: 25-06-2019 12:05pm AEST