Claim · model-written summary
Rainfall-dependent potassium and sulfur leaching made deficiency-related pasture production decreases unpredictable.
LoliumVerbatim
e0“both elements can leach below the root-zone, with rainfall determining the extent of leaching and magnitude of the decrease in pasture production resulting from deficiency, which cannot be predicted”
e1“ryegrass dairy pastures”
Title
M. D. A. Bolland; W. K. Russell Soil Research 2010. doi:10.1071/sr09199
Other claims from this paper (9)
- Recommendation Tissue testing was needed with soil testing to confirm nutrient management decisions.
- Method / resource Soil pH testing reliably identified paddocks needing lime and monitored liming.
- Method / resource Soil phosphorus testing reliably indicated when phosphorus fertilizer was required.
- Recommendation No phosphorus fertilizer was needed above the soil-specific critical soil-test phosphorus value.
- Observation Plant tissue testing indicated adequate phosphorus for ryegrass production when no phosphorus was applied.
- Method / resource Soil testing could not determine which paddocks required potassium fertilizer.
- Method / resource Soil testing could not determine which paddocks required sulfur fertilizer.
- Recommendation The authors recommended annual potassium and sulfur fertilizer and tissue testing to improve their management.
- Recommendation The authors recommended annual soil pH and soil-test phosphorus reporting, with P-buffering index, organic carbon and conductivity every 3–5 years.