Animal Waste Management Systems — Type A

Common Abbreviations

ac = acre(s)

ac-in. = acre-inch

bu = bushel(s)

Cu = copper

dia = diameter

ft = feet or foot

ft² = square feet or sq ft

ft³ = cubic feet or cu ft

gal = gallon(s)

gal/ft² = gallons per square foot

gpm = gallons per minute

hr = hour(s)

in. = inch(es)

in./hr = inches per hour

in./min = inches per minute

lb = pound(s)

lb/1,000 gal = pounds per thousand gallons

lb/ac = pounds per acre

mg/l = milligrams per liter

min = minute(s)

mph = miles per hour

N = nitrogen

PAN = plant-available nitrogen

psi = pounds per square inch

Zn = zinc

Conversion Factors

1 acre-inch = 27,154 gallons

1 acre = 43,560 square feet

lane spacing for traveling gun = 70% to 80% of wetted diameter

lane spacing for stationary gun = 50% to 65% of wetted diameter

mg/l = pounds per 1,000 gallons
120

Important Formulas

1. Volume of wastewater generated

2. Waste application rate for priority nutrient (pounds per acre)

3. Acres needed for waste application

4. Application rate (gallons per acre)

5. Application rate (tons per acre)

6. Pound of plant-available nitrogen applied per acre

7. Number of waste applications needed

8. Precipitation (application) rate for stationary equipment, inches per hour

9. Time of irrigation system operation (hours)

10. Precipitation (application) rate for traveling gun; inches per hour, where "w" is the angle of rotation expressed in degrees

11. Application volume (depth) for traveling gun; inches

12. Travel speed for traveling gun; inches per minute

13. Area of a rectangle

Area of a circle

14. Coverage area for application

15. Application rate for spreader