Having sufficient potassium reduces crop damage in frost events. Field trials in Western Australia showed benefits from potassium in wheat and canola. Richard Bell is a researcher at Murdoch University. In this video he explains:
- Crops respond more to potassium fertiliser in seasons that stress the plants with drought or frost conditions
- Growers in WA apply insufficient potassium fertiliser to replace the nutrient removed in grain
- Soil tests deeper than 0–10 cm are needed to predict potassium deficiency.