FarmLink Spitfire Wheat Update
Summary
“The Spitfire Wheat in paddock 5a was observed on the 22nd of October with the crop being currently at soft dough or around GS82 and the flag leaf has senesced markedly in the last week due to some hot and windy days. Primary tiller heads are filling 3 and 4 wide. The disease pressure has been low through spring and no fungicide has been applied. The crop has struggled in the last 2 weeks and this will be reflected in the yield come harvest.” Tony Pratt – 23rd October 2014.
| Yield Forecast (t/ha) |
Biomass (kg/ha) |
GSR (mm) |
Growth Stage |
3.3
|
8592
|
182
|
Z79
|
Topdressing Scenario Planning
Urea was applied to the paddock on 14th July at the rate of 100 kg/ha. Below are the yield forecasts from different Urea rates if they were applied on the same day.
| Urea 150 (t/ha) |
Urea 100 (t/ha) |
Urea 50 (t/ha) |
Urea 0 (t/ha) |
3.3
|
3.3
|
3.2
|
3.0
|
Gross Margin Analysis
| Gross Margin ($/ha) |
Breakeven Yield (t/ha) |
Breakeven Price ($) |
370.68
|
1.92
|
161.00
|
Temora Paddock
| Crop Setting |
Paddock Setting |
| Crop Type |
Spitfire Wheat |
Area |
23.8 ha |
| Sowing Date |
13th May 2014 |
Elevation |
271 m |
| Sowing Rate |
60 kg/ha |
Slope |
0.1 |
| Row Spacing |
300 mm |
Aspect |
E |
| Implement |
Knife points + press wheels |
Soil PAWC |
147 mm |
| Plant Density |
126 (p/m2) |
Soil Characterisation |
Red Chromosol (No. 913) |
Paddock Diary
| Paddock Operations |
Climate |
| Soil Test |
16/01/14 |
NO3 = 37, NH4 = 12 mg/kg |
Year-to-Date rainfall |
381 mm |
| Spraying |
14/03/14 |
Roundup, Amicide, LI 700 |
Soil Moisture @ Sowing |
40 mm |
| Spraying |
09/05/14 |
Roundup, Goal, LI 700 |
Growing Season Rainfall |
182 mm |
| Sowing |
13/05/14 |
MAP 50 kg/ha |
Last Frost |
20th Sep (-1°C) |
| Spraying |
13/05/14 |
Gramoxone, Sakura |
Soil Moisture early September |
10 mm |
| Spraying |
30/05/14 |
Fastac Duo, Dimethoate |
September SOI |
-7.5 |
| Spraying |
04/07/14 |
Igran, MCPA, Ally |
Similar SOI Seasons
|
1976, 1977, 1982, 1987, 1990, 1993, 1994, 1997, 2002, 2006 |
| Topdressing |
14/07/14 |
Urea 100 kg/ha |
APSIM
| Yield Forecast |
Crop Status (24 Oct) |
| 80th Percentile |
3.50 t/ha |
Growth Stage |
Z79 |
| Median |
3.27 t/ha |
NDVI |
0.76 |
| 20th Percentile |
3.22 t/ha |
Biomass |
8592 kg/ha |
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