A pre-emergent herbicide label states that crabgrass is controlled when Snapshot 2G is applied at the rate of 2.3 lbs for 1000 square feet. How much Snapshot should be applied to treat 1/4 acre?

A pre-emergent herbicide label states that crabgrass is controlled when Snapshot 2G is applied at the rate of 2.3 lbs for 1000 square feet. How much Snapshot should be applied to treat 1/4 acre?

• A. 20
• B. 25
• C. 30
• D. 35

Answer: (B)

To figure out how much Snapshot to apply, use the rate per area and scale it to the actual size you’re treating. A quarter acre is 10,890 square feet. The label gives 2.3 pounds for every 1,000 square feet, so you multiply 2.3 by the factor of area in thousands of square feet: 10,890 ÷ 1,000 = 10.89. Then 10.89 × 2.3 ≈ 25.05 pounds. Rounding to a practical amount, you’d need about twenty-five pounds of Snapshot for a quarter acre.

To figure out how much Snapshot to apply, use the rate per area and scale it to the actual size you’re treating. A quarter acre is 10,890 square feet. The label gives 2.3 pounds for every 1,000 square feet, so you multiply 2.3 by the factor of area in thousands of square feet: 10,890 ÷ 1,000 = 10.89. Then 10.89 × 2.3 ≈ 25.05 pounds. Rounding to a practical amount, you’d need about twenty-five pounds of Snapshot for a quarter acre.