Focus on integrating research on nutrient cycling, crop nutrient processing and the environmental impact of fertiliser use to identify ways of improving nutrient use efficiency (NUE) in the use of particular fertilisersIncludes research on a range of secondary macronutrients and micronutrients including: calcium, magnesium, zinc, boron, manganese and molybdenumReviews a wide range of options for reducing/optimising current levels of fertiliser use