01 Sep 2010

Optimizing nitrogen for wheat growing on hostile subsoils

JF Angus, CN Walker, JF Pedler and RM Norton

Nitrogen application to areas of wheat paddocks with high subsoil salinity, alkalinity, and/or boron (B) often gives low nutrient use efficiency and poor returns. These areas can be identified within a variable landscape using electromagnetic induction surveys. Paddock zones can be identified and then N managed according to the degree of constraint imposed by the hostile subsoils.

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