Key Points
- Application of the farmers fertiliser programme to paddocks of field peas reduced profitability by, on average, $280 per hectare for the crops studied
- Application of fertiliser did not result in a significant yield increase at any of the 13 trial sites over 3 seasons
- If Olsen P is above 10, it is very unlikely there will be a yield response to phosphate fertiliser
- If Quick test K is above 3, it is very unlikely there will be a yield response to potassium fertiliser
- If plant available N is above 70kg/ha, it is very unlikely there will be a yield response to nitrogen fertiliser
- Application of fertiliser to peas did not provide any agronomic benefits