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Farm & Garden Calc – Fertilizer Rate Calculator
x402
Farm & Garden Calc – Fertilizer Rate Calculator is a paid API for AI agents from agri-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).
Calculates the fertilizer product application rate and total quantity needed to hit a target N, P2O5, or K2O nutrient rate, and reports all nutrients supplied by that product rate.
Price / call$0.02
Success—
StatusUnknown
How this service works
Fertilizer product rate and total needed to hit a target N, P2O5 or K2O rate, and all nutrients it supplies.
Output
Returns the required fertilizer product rate per area unit (e.g. lb/acre or kg/ha), total product needed for the specified field size, and the amounts of N, P2O5, K2O, elemental P, and elemental K supplied at that rate. Also includes a text summary, units, and disclaimer.
Example use cases
Nitrogen planning for corn field
“I want to apply enough urea (46-0-0) to hit 150 lb/acre of nitrogen on my 80-acre corn field — how much do I need per acre and how many total pounds should I order? Imperial units please.”
Phosphate rate for vegetable garden
“I'm using DAP (18-46-0) and want to hit a P2O5 target of 60 lb/acre on my 2-acre vegetable plot. What's the fertilizer rate I need per acre, and what other nutrients will that application supply?”
Metric potassium application for canola
“Calculate how many kg/ha of 0-0-60 potash I need to apply to reach a K2O target of 80 kg/ha on 15 hectares, and tell me the total product I'll need to order in metric units.”
Technical details
Endpoint
GEThttps://agri-calc.x402tookit.com/fertilizer-rate?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to back-calculate a fertilizer product application rate from a desired nutrient delivery goal (N, P2O5, or K2O), rather than forward-calculating nutrients supplied from a known rate. Ideal for farm planning, purchasing decisions, and field-level nutrient management where the nutrient target is known but the product rate is not.
Side effects
- Missing required query params (analysis, nutrient, targetRate) returns an error
- Invalid nutrient value (not n, p2o5, or k2o) returns an error
- Zero or negative targetRate may produce nonsensical results
- Invalid analysis string format (not N-P2O5-K2O) may cause parsing failure
- No area provided means totalProduct is null/omitted
- Network or payment failure returns no data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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