Title: Demonstrate procedures for calibrating a fertilizer spreader or injector using mathematical concepts.
Course: Landscaping I (18054-I) > Section: Maintaining the Landscape

Demonstration should include selecting the calibration method for the type of spreader being used (e.g., rotary, drop).

Process/Skill Questions:

- What is the weight of the fertilizer that must be applied in the calibration run to have the spreader deliver 1.6 pounds fertilizer per 1,000 square feet, assuming the swath width of the spreader is 3 feet and the test strip is 100 feet long?
- How much fertilizer will be needed to apply 0.5 pound nitrogen (N) per 1,000 square feet to the turf, when applying a 30-0-10 fertilizer at a rate of 1 pound of N per 1,000 square feet, making two coverage passes perpendicular to each other, with each pass delivering half the desired rate (0.5 pound N per 1,000 square feet)?

Teacher Resource:

- Spreader Calibration, Lawn Care Academy