Farm Table says:
The take home messages from this GRDC funded research are below. Please access the full paper via the link below for methodology, references, acknowledgements and discussion.
Take key messages from the paper include:
- Based on more than 300 paddocks surveyed in the southern region, soil phosphorus (P) and soil nitrogen (N) status are highly variable across and within paddocks. In many cases, soil sampling intensity should be increased to sample multiple zones in a paddock.
- Low production zones tended to have lower soil P and higher soil N levels, and therefore, adjusting nutrient inputs according to zone could improve profitability.
- An initial paddock analysis of strips trials indicates that intensive soil sampling of production zones provided significant benefits in terms of P application. The yield response was highly variable across the paddock and was closely correlated with soil P status
- Results from N rate application strips are currently being analysed.