Nitrogen: What rate and type for in-crop application?

By Bob Freebairn
June 21 2021 - 5:00am
A wheat crop yielding 5.0 t/ha will remove around 100 kg/ha nitrogen, as well as 15 kg/ha phosphorus. In total cropping rotations nutrient budgeting and matching offput with replacement is a way to keep soils fertile.
A wheat crop yielding 5.0 t/ha will remove around 100 kg/ha nitrogen, as well as 15 kg/ha phosphorus. In total cropping rotations nutrient budgeting and matching offput with replacement is a way to keep soils fertile.

A lot of media discussion has focused on high crop nitrogen needs, as well as how nitrogen is the single biggest factor facing maximising high crop yields. That's all true, but deciding on what is an appropriate nitrogen fertiliser rate to apply to a crop, especially one well on the way, is no easy decision.

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