Why UGA Recommends Adding Phosphorus at Planting Regardless of Soil Test

Phosphorus is often chemically unavailable in Georgia’s naturally acidic soils. Low pH hinders root absorption, and phosphorus moves extremely slowly through soil—surface applications take years to reach roots.

Key Reasons

• 44% of UGA soil samples test low in phosphorus.
• Phosphorus binds tightly to soil particles, resisting leaching.
• Regular liming (per soil test) improves availability.
• Adding 0-46-0 at planting ensures early root access.

Strong root development depends on available phosphorus—banding it at planting is good insurance.