Publication Date
1993
Description
This paper reviews major factors affecting sulphur (S) cycling in New Zealand pastoral and arable· systems and identifies areas of research required to improve the efficient use of S fertilisers and soil S reserves. In the grazed pastoral system, S removal in animal products constitutes a small fraction of total S output while S leaching losses and excreta! S transfer losses to stock camps are substantial. Although grazing animals may cause a considerable S loss from the system, they enhance the oxidation of elemental S. Accumulated soil organic S due to the return of animal excreta and long-term annual applications of S fertilisers may be a significant S source for pasture plants. The major S loss in cropping systems, apart from S leaching losses, is S removal in harvested grain. S in unburned crop residues may provide a significant amount of S for subsequent crops. Research on the face of Sin crop residues as affected by methods of residue incorporation is required in NZ, especially with increasing world-wide emphasis being placed on low fertiliser input to agricultural systems.
Citation
Nguyen, M L. and Goh, K M., "Factors Affecting Plant Sulphur Requirements in New Zealand Pastoral and Arable Systems" (2024). IGC Proceedings (1993-2023). 11.
https://uknowledge.uky.edu/igc/1993/session40/11
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Factors Affecting Plant Sulphur Requirements in New Zealand Pastoral and Arable Systems
This paper reviews major factors affecting sulphur (S) cycling in New Zealand pastoral and arable· systems and identifies areas of research required to improve the efficient use of S fertilisers and soil S reserves. In the grazed pastoral system, S removal in animal products constitutes a small fraction of total S output while S leaching losses and excreta! S transfer losses to stock camps are substantial. Although grazing animals may cause a considerable S loss from the system, they enhance the oxidation of elemental S. Accumulated soil organic S due to the return of animal excreta and long-term annual applications of S fertilisers may be a significant S source for pasture plants. The major S loss in cropping systems, apart from S leaching losses, is S removal in harvested grain. S in unburned crop residues may provide a significant amount of S for subsequent crops. Research on the face of Sin crop residues as affected by methods of residue incorporation is required in NZ, especially with increasing world-wide emphasis being placed on low fertiliser input to agricultural systems.
