best practice management guide for south-eastern Australia - Grains ...

Contents
Contents
1. Introduction..................................................................................... 5
2. Grain quality.................................................................................... 7
High oleic, low linolenic acid canola (HOLL).................................... 7
Brassica juncea................................................................................. 7
Oil content........................................................................................ 8
Fatty acid profiles............................................................................. 8
Erucic acid........................................................................................ 9
Iodine value...................................................................................... 9
Chlorophyll content.......................................................................... 9
Canola meal...................................................................................... 9
Protein.............................................................................................. 9
Glucosinolates................................................................................ 10
Volumetric grain weights................................................................ 10
3. The canola plant and how it grows.............................................. 11
Environmental stresses impacting yield and oil content................ 14
4. Crop rotation and paddock selection........................................... 15
Crop rotation................................................................................... 15
Paddock selection.......................................................................... 17
Dual-purpose canola (grazing and grain)....................................... 19
5. Crop establishment....................................................................... 21
Pre-sowing management............................................................... 21
Seed quality.................................................................................... 22
Sowing method.............................................................................. 24
Sowing depth – general.................................................................. 27
Time of sowing – general............................................................... 27
6. Canola in the low-rainfall cropping zone...................................... 29
7. Nutrition and soil fertility............................................................... 31
Nitrogen.......................................................................................... 31
Phosphorus.................................................................................... 34
Sulfur.............................................................................................. 35
Potassium....................................................................................... 35
Other elements............................................................................... 36
Boron.............................................................................................. 36
Molybdenum................................................................................... 37
Zinc................................................................................................. 37
Magnesium..................................................................................... 37
Calcium........................................................................................... 37
Salinity and subsoil constraints...................................................... 38
Soil acidity and liming.................................................................... 38
Farmer test strips........................................................................... 40
8. Weed management....................................................................... 41
Weed management with herbicides............................................... 41
Integrated weed management (IWM)............................................. 45
Canola best practice management guide
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