Low Oxygen Diffusion Rate (ODR)
About Low Oxygen Diffusion Rate (ODR)
Oxygen moves through soils by diffusion, areas of high concentration to areas of low concentration. When oxygen is consumed by roots/microorganisms, concentration of oxygen is reduced. Concentration gradient is established between atmosphere and the soil. The greater the oxygen gradient, the higher the diffusion rate. If the ODR declines below certain levels, oxygen supply to root surfaces is diminished and aeration deficits occur.
Low Oxygen Diffusion Rate (ODR) is an abiotic disorder — a non-living, environmental cause of plant damage — commonly encountered in Middle Tennessee, including Columbia, Thompson's Station, Spring Hill, and the surrounding areas. This entry is part of our Abiotic Disorders Library.
Unlike diseases caused by fungi or bacteria, abiotic disorders cannot be treated with pesticides. Correct diagnosis is essential — our UT Certified horticulturist can evaluate your lawn or landscape and recommend the right corrective action.
Quick Facts
- Common Name
- Low Oxygen Diffusion Rate (ODR)
- Type
- Abiotic Disorder (Non-Living Cause)
- Region
- Middle Tennessee
