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Phosphorus/PRI
Nitrogen
Potash
2003 Trials
2004 Trials

 

Summit have conducted trials since 1992 producing a range of results on major nutrients, the effect of Phosphorus Retention Index (PRI) on Phosphorus availability and products.

A selection of trial results are included in this area. Just click on the selection button on the left to take you to the desired results.

 
This trial at Corrigin, in 2003, suffered from very dry conditions, as did the rest of the state. In spite of this there were very good responses to Phosphorus and Nitrogen.
 


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Updated   March 12, 2008