Side-by-Side Comparison
Lawn & Garden
Fertilizer N-P-K vs. Lawn Mower Decks
Comparing 2 standards across 16 specifications. 16 key differences identified.
Comparing:
Fertilizer N-P-K
Lawn Mower Decks
Fertilizer labels display three numbers representing percentage by weight of Nitrogen (N) for foliage growth, available Phosphate (P2O5) for root development, and soluble Potash (K2O) for drought and cold hardiness.
Lawn mower cutting decks standardize cutting swaths from 21-inch walk-behind push mowers for lots under 1/2 acre to 42–60 inch multi-blade zero-turn decks for acreage, mounting blades via 5-point star, 6-point star, or 5/8-inch round center holes.
Specification Comparison Table
16 Parameters| Parameter / Spec | ||
|---|---|---|
|
Governing Standards
|
AAPFCO Guaranteed Analysis / USDA Fertilizer Sizing Guidelines | ANSI B71.1 (Power Lawn Mowers) / OPEI Specifications |
|
First Number (N)
|
Nitrogen % | Promotes rapid leaf blade growth and green chlorophyll synthesis | — |
|
Second Number (P)
|
Phosphate (P2O5) % | Stimulates root establishment and blossom/fruit set | — |
|
Third Number (K)
|
Potash (K2O) % | Strengthens cell walls for drought, heat, and disease resistance | — |
|
Balanced All-Purpose (10-10-10)
|
10% N, 10% P2O5, 10% K2O (General vegetable garden & flower bed standard) | — |
|
Lawn Maintenance (24-0-11)
|
High nitrogen turf blend for established lawns without phosphorus runoff | — |
|
Starter Fertilizer (18-24-12)
|
High phosphorus blend for new sod establishment and seed germination | — |
|
1.0 lb Nitrogen per 1k sq ft Rule
|
Lbs of product = 100 ÷ Nitrogen % (e.g. 20-5-10 requires 5.0 lbs/1,000 sq ft) | — |
|
21-Inch Walk-Behind Deck
|
— | Cutting width: 21" (53 cm) | Single blade | Lots up to 0.5 acre |
|
30-Inch Wide Walk-Behind
|
— | Cutting width: 30" (76 cm) | Twin timed blades | Lots 0.5 to 1.0 acre |
|
42-Inch Riding / Zero-Turn
|
— | Cutting width: 42" (107 cm) | Twin blades | Properties 1 to 2 acres |
|
48 to 54-Inch Zero-Turn
|
— | Cutting width: 48–54" (122–137 cm) | Triple blades | Properties 2 to 4 acres |
|
60-Inch Commercial Deck
|
— | Cutting width: 60" (152 cm) | Triple blades | Commercial & 4+ acres |
|
5-Point Star Spindle Hole
|
— | Husqvarna / Poulan / Craftsman standard blade mount |
|
6-Point Star Spindle Hole
|
— | MTD / Troy-Bilt / Cub Cadet standard blade mount |
|
Round Spindle Hole
|
— | 5/8-inch (15.9 mm) or 15/16-inch (23.8 mm) universal commercial mount |