Publication Date
1997
Description
A field trial was conducted over 6 years to assess the relative performance of three phosphate (P) fertilisers of differing solubility (single superphosphate, ‘longlife’ superphosphate, ‘reactive’ phosphate rock) on a permanent pasture at Methven in Canterbury, New Zealand. Plant P uptake data showed that while the overall relative effectiveness of the fertilisers was closely related to their water-soluble P content (single superphosphate > ‘longlife’ superphosphate > ‘reactive’ phosphate rock), the agronomic efficiency of the sparingly soluble phosphate rock fertiliser improved markedly with time. Soil P analysis demonstrated that significant dissolution of phosphate rock had occurred in the soil, and the findings of this trial confirm that phosphate rock is an appropriate P fertiliser for use in pastoral agriculture in New Zealand.
Citation
Condron, L M. and Goh, K M., "Effects of Different Phosphate Fertilizers on Pasture Nutrition and Soil Phosphorus in Canterbury, New Zealand" (2024). IGC Proceedings (1997-2023). 14.
https://uknowledge.uky.edu/igc/1997/session11/14
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Effects of Different Phosphate Fertilizers on Pasture Nutrition and Soil Phosphorus in Canterbury, New Zealand
A field trial was conducted over 6 years to assess the relative performance of three phosphate (P) fertilisers of differing solubility (single superphosphate, ‘longlife’ superphosphate, ‘reactive’ phosphate rock) on a permanent pasture at Methven in Canterbury, New Zealand. Plant P uptake data showed that while the overall relative effectiveness of the fertilisers was closely related to their water-soluble P content (single superphosphate > ‘longlife’ superphosphate > ‘reactive’ phosphate rock), the agronomic efficiency of the sparingly soluble phosphate rock fertiliser improved markedly with time. Soil P analysis demonstrated that significant dissolution of phosphate rock had occurred in the soil, and the findings of this trial confirm that phosphate rock is an appropriate P fertiliser for use in pastoral agriculture in New Zealand.
