Improve your prodiamine application and ensure optimal results with Prodiamine Calculator. The pre-emergent herbicide ensures effective weed control while maintaining lawn safety. This helps both homeowners and professionals calculate the right amount of product for their lawn care needs.
What is Prodiamine?
Prodiamine is a pre-emergent herbicide that creates a barrier in the soil to prevent weed seeds from germinating. It’s particularly effective against:
- Crabgrass
- Annual bluegrass (Poa annua)
- Goosegrass
- Foxtail
- Other annual grass weeds
Prodiamine Calculator Formula
Amount needed (oz) = (Lawn Area in sq ft × Desired Rate) ÷ 43,560
Where:
- Desired Rate = 0.4-0.83 lb ai/acre (active ingredient per acre)
- 43,560 = Square feet in one acre
Important: Never exceed the maximum annual application rate of 2.5 pounds of active ingredient per acre per year.
Application Rates by Grass Type
| Grass Type | Rate (lb ai/acre) | Duration of Control |
|---|---|---|
| Bermuda | 0.75 | 4-6 months |
| Tall Fescue | 0.65 | 3-5 months |
| Kentucky Bluegrass | 0.5 | 3-4 months |
| St. Augustine | 0.6 | 4-5 months |
Calculation Examples
Example 1: Small Residential Lawn
Given:
- Lawn area: 5,000 sq ft
- Desired rate: 0.65 lb ai/acre
- Calculation: (5,000 × 0.65) ÷ 43,560 = 0.075 lb ai
- Convert to ounces: 0.075 × 16 = 1.2 oz of product
Example 2: Large Commercial Property
Given:
- Lawn area: 20,000 sq ft
- Desired rate: 0.75 lb ai/acre
- Calculation: (20,000 × 0.75) ÷ 43,560 = 0.345 lb ai
- Convert to ounces: 0.345 × 16 = 5.52 oz of product
Key Benefits
- Prevents common lawn weeds before they emerge
- Provides long-lasting protection
- Cost-effective weed control solution
- Safe for most established turfgrasses
Application Tips and Best Practices
- Apply when soil temperatures reach 55°F
- Water in with 0.5 inches of irrigation
- Calibrate sprayers before application
- Wear appropriate protective equipment
- Apply evenly across the treatment area
- Avoid application before seeding
Frequently Asked Questions
Q: When is the best time to apply prodiamine?
A: Apply in early spring before soil temperatures reach 55°F for summer weeds, or in late summer/early fall for winter annuals.
Q: How long does prodiamine last?
A: Typically 3-8 months, depending on application rate and environmental conditions.
Q: Can I seed after applying prodiamine?
A: Wait at least 4 months after application before seeding, as prodiamine prevents seed germination.
Q: Is prodiamine safe for all grass types?
A: Yes, when applied correctly, it’s safe for established warm and cool-season grasses.
Common Mistakes to Avoid
- Overlapping applications
- Applying to wet foliage
- Incorrect calculation of lawn area
- Skipping calibration
- Not watering in the product
Conclusion
The prodiamine calculator is an essential tool for successful pre-emergent weed control. Accurate calculations ensure effective treatment while protecting your lawn from potential damage. Remember to always follow label instructions and local regulations when applying any herbicide.
Pro Tip: Keep detailed records of your applications, including dates, rates, and weather conditions, to optimize future treatments and maintain compliance with regulations.
Related Lawn Care Resources
Professional lawn care services
Lawn measurement guide
Sprayer calibration tips
Seasonal weed control planning
Grass type identification
