Sprayer Calibration API
Agricultural sprayer maths as an API, computed locally and deterministically — the calibration, coverage and tank-mix numbers a farmer, agronomist or custom applicator dials a boom sprayer in with. The calibration endpoint gives the broadcast application rate GPA = 5940 × the per-nozzle flow (GPM) ÷ (ground speed in mph × nozzle spacing in inches), the 5940 converting the units for a full-coverage boom — so a 0.4 GPM nozzle at 5 mph on 20-inch spacing lays down about 24 gallons per acre, and driving faster or spacing nozzles wider drops the rate. The coverage endpoint gives the acres a tank covers (tank ÷ GPA) and, for a field size, the total spray volume and the number of tank-loads, with the partial last fill called out so it can be mixed to the leftover acres. The product endpoint gives the pesticide or nutrient to add per tank = the acres a tank covers × the label rate per acre (in whatever unit the rate uses — ounces, pints, pounds), plus the total product for the field. Everything is computed locally and deterministically, so it is instant and private. Ideal for precision-ag and farm-management tools, sprayer-calibration and tank-mix apps, and ag-retail utilities. Pure local computation — no key, no third-party service, instant. Always follow the product label and calibrate with a real catch test. 3 compute endpoints. For fertiliser rates use a fertilizer API; for sprinkler/irrigation design an irrigation API.
api.oanor.com/spray-api
