Concentration and distribution of phosphorus species in different marginal land soils
- Date
- October 19, 2021
- Time
- 10:00 AM EDT - 12:00 PM EDT
- Location
- Virtual Zoom
- Open To
- Event open to Students, Faculty, Staff, Post-Doctoral Fellows, Public
- Contact
- Sarah Kovacs skovacs@torontomu.ca
Candidate: Timothy Ho
Supervisor: Dr. Julia Lu
Abstract:
This research focused on soil leachable and total P from three selected Ontario fields, of which one is agricultural land as reference in 2019. Leachable P was obtained through leaching soil with an acidified water solution and analyzed using colorimetric method. Total P was obtained through microwave acid digestion and analyzed using ICP-OES. Marginal soil leachable P has variable correlation with the total P in each respective depth but didn’t match the correlation found in the agricultural soil. High correlation of leachable P concentration to biomass yield was found in the agricultural soil and one of the marginal land soils that received 45 kg N ha-1urea fertilizer. The difference in correlation can be due to the difference in drainage and soil textures allowing different P movement. There was little to no statistical difference in both P fractions when comparing between fertilizer applications, sorghum hybrids or over sorghum growth periods.
