Nutrient recycling and balance in cropping systems

1. Soil N cycling and uptake
2. Soil OM and use of wastes
3. Nutrient use efficiency, general fertilizer studies
4. Phosphorus
5. Other elements: S, Zn, microelements
6. Inoculants, rhizobia, biofertilizers

• "New directions for a diverse planet". Edited by RA Fischer. Proceedings of the 4th International Crop Science Congress. Brisbane, Australia, 26 September - 1 October 2004.