Calculateur d'Engrais pour Pelouse
Calculez la quantité d'engrais nécessaire pour votre pelouse.
Fertilizer Needed
20.8 lbs
Fertilizer Needed vs Desired Nitrogen Rate
Formule
Calculating Lawn Fertilizer
Fertilizer application is based on the nitrogen (N) rate per 1,000 square feet and the N percentage in your fertilizer product.
Formula
Nitrogen Needed (lbs) = Lawn Area / 1000 x Desired N Rate
Fertilizer (lbs) = Nitrogen Needed / (N% / 100)
Most cool-season lawns need 2-4 lbs of N per 1,000 sq ft per year, applied in 3-4 applications. Warm-season grasses need 1-3 lbs per year.
Exemple Résolu
A 5,000 sq ft lawn, 1 lb N/1000 sq ft, using 24-8-16 fertilizer.
- 01Nitrogen needed = 5,000 / 1,000 x 1 = 5 lbs N
- 02Fertilizer needed = 5 / 0.24 = 20.8 lbs of 24-8-16
- 03Per 1,000 sq ft = 1 / 0.24 = 4.2 lbs
Questions Fréquentes
What do the three numbers on fertilizer mean?
They represent the percentage by weight of Nitrogen (N), Phosphorus (P), and Potassium (K). A 24-8-16 bag is 24% nitrogen, 8% phosphorus, 16% potassium.
When should I fertilize?
Cool-season grasses: primarily in fall, with lighter spring feeding. Warm-season grasses: late spring through summer when actively growing.
Can I over-fertilize?
Yes. Too much nitrogen burns grass, pollutes waterways, and promotes disease. Always follow recommended rates and use a calibrated spreader.
Apprendre