FFA Horticulture CDE General Practice Exam

How many pounds of seed are needed for a lawn measuring 85 feet by 150 feet, seeded at 4 pounds per 1000 square feet?

1. 36

2. 45

3. 51

4. 60

The correct answer is: 51

To determine the amount of seed needed for a lawn, you first need to calculate the total area of the lawn in square feet. The dimensions given are 85 feet and 150 feet, so you can find the area by multiplying these two numbers: Area = Length × Width = 85 feet × 150 feet = 12,750 square feet. Next, the seeding rate is given as 4 pounds of seed per 1,000 square feet. To find out how many pounds of seed are needed for the total area, you can use the following calculations: 1. Divide the total area by 1,000 to find out how many 1,000 square foot units are in 12,750 square feet: 12,750 ÷ 1,000 = 12.75 units of 1,000 square feet. 2. Then, multiply the number of units by the seeding rate: 12.75 × 4 pounds = 51 pounds. This gives you the total amount of seed required for the lawn. Therefore, understanding the area calculation, along with the seeding rate, confirms that 51 pounds of seed is the correct amount needed for the lawn size specified.