LIQUIDS WORKSHEET 2 - NUTRIENT BALANCE Modified January 14, 2014

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1 LIQUIDS WORKSHEET 2 - NUTRIENT BALANCE Modified January 14, 2014 Tract Field No. Acres Soil Test P Value (Mehlich 3) Step 1. Crop or Crop Sequence/Rotation See Table 2.1 Options Step 2. Step 3. Realistic Yield (Average from 5-10 Years on a per acre basis) Plant Nutrients Needed or Allowed (lbs/ac) Table 2.1 Value for N Step 2 Table 2.1 Value for P Step 2 Table 2.1 Value for K Step 2 Step 4. Adjusted P 2 O 5 According to Threshold Step 3 P 2 O 5 Table 2.2 Value Step 5. Fertilizer Credits (lbs/ac) P Step 6. Starter or Other Plant Nutrients Needed Minus Credits (lbs/ac) N = Step 3 for N Step 5 for N If Step 4 > 0: P = Step 4 for P Step 5 for P If Step 4 = 0: Step 3 for P = Step 5 for P K = Step 3 for K Step 5 for K Step 7. Step 8. Step 9. Nutrients in Manure (lbs./1,000 gallons) Step 4 Values from Liquids Worksheet 1 or use Lab Results Percent Nutrients Retained in System Enter Table 2.3 values or Enter zero if lab analysis is used Net Retained Nutrients in Manure (lbs./1,000 gallons) Enter zero if lab analysis is used Step 7 for N Step 8 for N Step 7 for P Step 8 for P Step 7 for K Step 8 for K Step 8 x Step 9 (Enter zero with lab analysis) Step 10. Percent of Available Nutrients 80% 100% Enter Table 2.4 Value for N

2 Step 11. Net Available Nutrients (lbs./1,000 gallons) If Lab Results are used in Step 7: Step 7 for N Step 10 for N Step 7 for P Step 10 for P Step 7 for K Step 10 for K If Liquid Worksheet 1 Values are used in Step 8: Step 9 for N Step 10 for N Step 9 for P Step 10 for P Step 9 for K Step 10 for K Step 10 x Step 11 without lab analysis or Step 12. (1,000 gallons/ac) N = Step 6 for N Step 11 for N P = Step 6 for P Step 11 for P K = Step 6 for K Step 11 for K Step 13. Net Application Amount for All Nutrients (1,000 gallons/ac) Step 11 for N Step 11 for P Step 11 for K Step 14. Nutrient Needs (negative) or Surpluses (positive) (1,000 gallons/ac) N = Step 13 for N Step 6 for N P = Step 13 for P Step 6 for P K = Step 13 for K Step 6 for K Step 15. Balance Tons Available Step 6 from Liquids Worksheet 1 or Balance from Previous Worksheet 2 Tons Applied in - Field = Balance x Field Acres x 1,000 or to deplete supply in one field: Gallons Available Num. of Acres = Uniform App. Rate (Be sure not to exceed 13,000 gallons/acre)

3 Table 2.1 Crop Nutrient Removal Values in Pounds Per Unit Yield Crop Total N P 2 O 5 K 2 O Alfalfa Hay (Ton) Barley Grain (Bushel) Barley Straw (Ton)* Bermudagrass - Hay (Ton) Big Bluestem, Indiangrass, Little Bluestem, - Hay (Ton) Bluegrass (Ton)* Bromegrass (Ton)* Corn Grain (Bushel) Corn Silage (Ton) Corn Stover (Ton)* Eastern Gamagrass - Hay (Ton) Fescue (Ton)* Flax Grain (Bushel)* Flax Straw (Bushel)* Forage for Pastureland Millet (Bushel)* Oat Grain (Bushel)* Oat Silage (Ton)* Oat Straw (Ton)* Orchardgrass (Ton)* Other Cool Season Grass/Legume Hay (Ton) Red Clover (Ton)* Rye Grain (Bushel)* Rye Straw (Ton)* Ryegrass (Ton)* Sorghum Grain (Bushel) Sorghum Stover (Ton)* Sorghum-Sudan (Ton)* Soybean Grain (Bushel)* Soybean Hay (Ton)* Switchgrass (Ton)* Timothy (Ton)* Tobacco (Pound) Vetch (Ton)* Wheat Grain (Bushel)* Wheat Silage (Ton) Wheat Straw (Ton)* * Value from Murrell, 2008.

4 Table 2.2 Phosphorus Threshold STP Adjustment Interpretation < Manure applications can be made based on crop nitrogen requirements Phosphorus applications at rates not to exceed the estimated removal of phosphorus in the harvested plant biomass Phosphorus applications at rates not to exceed 1/2 of the estimated removal of phosphorus in the harvested plant biomass >800 - Phosphorus applications are no longer allowed

5 Table 2.3 Percent of Original Nutrient Content of Manure Retained By Various Management Systems* Beef Dairy Poultry Swine Management System N P K N P K N P K N P K Open lot -cool humid region Liquids & solids in a covered essentially watertight structure Liquids & solids in a uncovered essentially watertight structure Liquids & solids (diluted less than 50%) waste storage pond Manure with bedding in roofed storage Manure with bedding in unroofed storage leachate lost Manure stored in pits beneath slatted floor Anaerobic lagoon or stored in waste storage pond diluted >50% * Adapted from 1992 NRCS Agricultural Waste Management Field Handbook

6 Table 2.4 Percent of Nutrients from Manure Available to a Crop During the Year of Application in Comparison with Fertilizer Nutrients* Availability Coefficient Nutrient and Application Type Poultry or Liquid Other Manures Nitrogen (N) Corn, Tobacco, Annual Grasses or Sorghum Spring Applied Incorporation: same day Incorporation: 2 days or less Incorporation: 3-4 days Incorporation: 5-6 days Incorporation: 7 days or more Fall Applied Without cover crop With cover crop Small Grains (pre-plant) Pasture (Fall or early Spring) Phosphate (P 2 O 5 ) Potash (K 2 O) *Note: Information from Table 2.3 or from a laboratory analysis will be used as a basis for Table 2.4. Table 2.4 Source: AGR-146 Using Animal Manures as Nutrient Sources 8/2000 University of Kentucky.