| Researcher(s) |
Mitch Allen (FarmLink) Paul Breust (FSG) Nicole Dimos (SPAA) Anthony Hall (AgnVet Services Temora) |
|---|---|
| Year(s) | 2011 |
| Contributor | Society of Precision Agriculture Australia |
| Trial location(s) |
Coolamon , NSW
|
To investigate various rates of liquid and granular nitrogen on wheat protein using precision agriculture tools.
The aim of the trial was to investigate the use of variable rate liquid & urea applications and their impacts on yield & grain protein. The liquid N application of 120l/ha achieved 2.8T/ha yield and increased protein to 13% which was $199/ha higher return than the 120kg/ha of Urea treatment. The 120kg/ha Urea treatment yielded 2.6t/ha and was graded as H2 because of a protein level of 12.6%. In this case it was economic to use the liquid N rate of 120l/ha. There were no other economic impacts from this trial work.
| Lead research organisation |
Society of Precision Agriculture Australia |
|---|---|
| Host research organisation | N/A |
| Trial funding source | GRDC SPA000010 |
| Related program | N/A |
| Acknowledgments |
This project was funded by the Grains Research and Development Corporation (GRDC) |
| Other trial partners | Bruce Holden (property owner) |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Precision agriculture |
| Trial design | Not applicable |
| Sow rate or Target density | 75 kg/ha |
|---|---|
| Sow date | 20 May 2011 20 May 2011 |
| Harvest date | Not specified |
| Plot size | Not specified |
| Plot replication | Not specified |
| Fertiliser |
80kg/ha MAP + Impact |
| Herbicide |
Logran @20g/ha + Roundup @ 1L/ha pre emergent |
| Fungicide |
Fungicide to control Yr at Z39 |
| Other trial notes |
The growers Bruce Holden & his advisor Anthony Hall were interested in testing the efficacy of the 2 N application methods. The trial was planned to look at the impacts of various rates on yield & protein of wheat using precision ag technology. The wished to determine if there was an economic response and if the was any economic difference between the two methods. |
| # |
Treatment 1
|
Treatment 2
|
Protein (%) | Screenings (%) | Moisture (%) | Test weight (kg/hL) |
|---|---|---|---|---|---|---|
| 1 | █ Liquid N | █ 60 L/ha | 12.3 | 3.7 | 11.5 | 77.5 |
| 2 | █ Liquid N | █ 90 L/ha | 11.5 | 1.3 | 11.6 | 78.5 |
| 3 | █ Liquid N | █ 120 L/ha | 13 | 4.3 | 11.6 | 77.5 |
| 4 | █ Liquid N | █ 150 L/ha | 12.8 | 5.6 | 11.5 | 76.5 |
| 5 | █ Urea | █ 60 kg/ha | 12.4 | 5.3 | 11.6 | 76 |
| 6 | █ Urea | █ 90 kg/ha | 11.9 | 2.8 | 11.6 | 76 |
| 7 | █ Urea | █ 120 kg/ha | 12.6 | 3.9 | 11.6 | 76.5 |
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.
