Anhydrous Ammonia Rate from Target Nitrogen
The anhydrous ammonia product a nitrogen target needs.
Example
You enter
- Target nitrogen (lb N/acre) 180
- Nurse tank size (gal, 0 to skip) 1000
You get
- Anhydrous rate 219.51
- Product gal per ac 42.62
- Acres per tank 23.46
Details, formula, and sources
Anhydrous is 82-0-0 (82% N), so product = target N / 0.82, and at about 5.15 lb/gal that is the gallons per acre; a nurse-tank's gallons over that is the acres it covers. A 180 lb N/acre target is about 219.5 lb (42.6 gal) of anhydrous per acre, so a 1,000-gal tank covers about 23.5 acres. Anhydrous is a pressurized, hazardous liquid -- set the applicator with a flow monitor, calibrate against a weigh/flow check, allow for temperature and vapor, and follow the label and safety (PPE, water, closed transfer) requirements. A rate estimate; the applicator calibration, the soil-test N recommendation, and the co-op / label govern. Distinct from the NPK blend, which solves into urea/DAP/potash.
product_lb_per_ac = n_target_lb_per_ac / 0.82; product_gal_per_ac = product_lb_per_ac / 5.15; acres_per_tank = tank_gal / product_gal_per_ac.
Anhydrous ammonia fertilizer grade (82-0-0) and liquid density (~5.15 lb/gal), by name; extension-service and co-op practice. The soil-test N recommendation and the label govern.
The grade (82% N) and the liquid density are public product facts; the target N comes from the soil-test recommendation and the tank size from the equipment.
Estimate. AHJ and licensed professional govern.
Field names used by the API: n_target_lb_per_ac, tank_gal, product_lb_per_ac, product_gal_per_ac, acres_per_tank
- Grade and density 82-0-0 (82% N); ~5.15 lb/gal liquid; product = N/0.82, gal/ac = lb/ac / 5.15anhydrous ammonia product data
- Calibration and safety flow-monitored, calibrated applicator; PPE, water, closed transfer per the label; the certification governsextension / label