Yield maps can be used to identify trial sites with contrasting fertilizer N requirements
![](https://eatlas.org.au/sites/default/files/styles/m_very_large/public/nesp-twq-5/5-11/Using_yield_map_productivity_zones_to_locate_NESP_trials.jpg?itok=Vfv2e82L)
Photographers: John Turner
Description
This is an example of using measured variability in crop performance across a cane field to test whether productivity zones can receive different fertilizer N application rates. The yield maps allow experiments to be located in parts of the field with similar productivity and N demand.
Image produced for the project