Optimizing Nitrogen for Wheat Growing on Hostile Subsoils

摘要

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.