Willow Spring, NC. Willow Spring is located close to the center of North Carolina. Willow Spring is between the Wake, Alamance, Harnett, Johnston county. On average, the public school district that covers Willow Spring is better than the state average in quality. The Willow Spring area code is 919.
The average U.S. soybean yield for 2014 is now estimated at the record level of 46.6 bushels per acre, which is an increase from the August USDA estimate of 45.4 bushels per acre.
Likewise, a 40-bushel-per-acre soybean crop will remove 152 pounds per acre N, 32 pounds per acre P2O5 and 56 pounds per acre K20. Nutrient removal rates indicate the variations in N, P and K needs among different crops. As crops yields increase, more and more nutrients are removed from the soil.