Potential yield tool

Page last updated: Tuesday, 4 April 2023 - 7:39am

Please note: This content may be out of date and is currently under review.

The potential yield tool uses seasonal rainfall and decile finishes, calculated from historical data, to calculate the maximum wheat yield possible in the absence of any other constraints. Potential yield can be used as a tool in the seasonal decision making process.

Estimates of potential wheat yield are obtained using the French & Schultz potential yield model:

Yield (tonnes/ha) = WUE* (stored soil water + growing season rainfall - evaporation)

Where WUE is the abbreviation for water use efficiency and growing season rainfall is usually calculated from April to October, inclusive. Stored soil water at the start of the growing season is estimated as one third of summer rainfall.


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