The following chart is meant to provide general guidance when an actual setting is not available. Be aware, the age and condition of the spreader may affect the flow of the product. The spreader may also need to be calibrated to get the proper coverage.
If your spreader is not listed above, determine if you have a rotary or drop spreader; then, looking at the dial on your spreader, check the span of numbers on the dial. Referring to the list above, find a rotary or drop spreader (depending upon which one you have) with the closest number span to the one on your dial and set your spreader. The spreader may also need to be calibrated to get the proper coverage. Calibrating Your Spreader. Divide 100 by the square foot the bag of fertilizer covers 2. Multiply the weight of the bag by this number 3. The answer is the amount of fertilizer needed to cover 100 sq. Place this amount in the spreader 5. Mark off a 10 ft.
Calibrating Your Spreader
1. Divide 100 by the square foot the bag of fertilizer covers
2. Multiply the weight of the bag by this number
3. The answer is the amount of fertilizer needed to cover 100 sq. ft.
4. Place this amount in the spreader
5. Mark off a 10 ft. x 10 ft. area
6. Apply using the suggested setting
Example
If the fertilizer bag weighs 25 lbs. and covers 5,000 square feet:
100 sq. ft.
———— x 25 lbs. = ½ lb.
5,000 sq. ft.
- ½ lb. of product is needed to cover 100 square feet.
Troubleshooting
- If the fertilizer runs out before completing the area, decrease the setting. Mark off another 10’ x 10’ area and repeat the test until the correct application rate is achieved.
- If there is product remaining in the spreader, increase the setting. Mark off another 10’ x 10’ area and repeat the test until the correct application rate is achieved.
Precision Red Devil Broadcast Spreader
Rotary Spreaders | |||
Spreader Range | Setting: 3 lbs. / 1,000 sq. ft. | Setting: 4 lbs. / 1,000 sq. ft. | Setting: 5 lbs. / 1,000 sq. ft. |
1-10 | 2 ½ | 3 ½ | 4 |
1-18 | 3 | 4 | 5 |
1-24 | 14 | 16 | 18 |
1-40 | 25 | 30 | 33 |
Red Devil Broadcast Spreader Manual
Drop Spreaders | |||
Spreader Range | Setting: 3 lbs. / 1,000 sq. ft. | Setting: 4 lbs. / 1,000 sq. ft. | Setting: 5 lbs. / 1,000 sq. ft. |
1-12 | 2 | 3 ⅕ | 4 ½ |
1-20 | 4 | 5 | 6 |
1-30 | 13 | 15 | 17 |