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Table 1 Investment per animal for three manure systems
System
Herd size
150
300
600
Solid system with dirt lot and holding pond
$186
$120
$107
Lagoon system, barn, flushed under slats
$795
$636
$555
Slurry system, barn, deep pit under slats
$980
$892
$836
Table 2 Net annual cost per animal for three manure systems
System
Herd size
150
300
600
Solid system with dirt lot and holding pond
$34
$23
$21
Lagoon system, barn, flushed under slats
$96
$71
$59
Slurry system, barn, deep pit under slats
$112
$99
$89
Table 3 Minimum acres required for land application based on nitrogen for three manure systems
System
Herd size
150
300
600
Solid system with dirt lot and holding pond
24 acres
49 acres
98 acres
Lagoon system, barn, flushed under slats
15 acres
30 acres
59 acres
Slurry system, barn, deep pit under slats
57 acres
115 acres
229 acres
Table 4 Comparison of annual plant-available nutrient values for the three systems
System
Herd size
150
300
600
Nitrogen from solids at $.30 per pound
$1,210
$2,416
$4,828
Nitrogen from slurry
$2,840
$5,679
$11,358
Nitrogen from lagoon
$732
$1,463
$2,927
P2O5 from solids at $0.20 per pound
$798
$1,596
$3,192
P2O5 from slurry
$1,568
$3,135
$6,270
P2O5 from lagoon
$599
$1,197
$2,394
K2O from solids at $0.15 per pound
$1,164
$2,316
$4,614
K2O from slurry
$1,689
$3,377
$6,755
K2O from lagoon
$577
$1,154
$2,309
Table 5 Cost per acre-inch for custom lagoon pumping
System
Herd size
150
300
600
Pumping costs for owned equipment purchased used
Acre inches pumped annually
11.1 acres
19.8 acres
36.4 acres
Custom lagoon pumping cost
$105
$93
$86
Owned lagoon pumping cost
$432
$277
$190
Custom pumping and irrigation from the lagoon system
1.Estimated acre-inches to pump annually
11.1
19.8
36.4
2. Custom pumping charge per hour
$70
$70
$70
3. Annual lagoon pumping costs (line 1 x line 2) plus $300 setup charge
$1,077
$1,686
$2,848
4. Check labor per year
11 hours
20 hours
36 hours
5. Annual labor costs (line 4 x $8 per hour)
$88
$160
$288
6. Total operating costs (line 3 + line 5)
$1,165
$1,846
$3,136
7. Cost per acre-inch (line 14 line 1) or per hour operation
$104.95
$93.23
$86.15
Table 6 Summary of lagoon system costs
Herd size
150
300
600
1. Average investment per animal
$795
$636
$555
2. Annual operating costs (from Table 12, line 10)
$1,357
$2,229
$3,775
3. Annual fixed costs (from Table 11, line 9)
$15,000
$23,000
$39,000
4. Total annual costs (line 2 + line 3)
$16,357
$25,229
$42,775
5. Annual costs per animal
$109
$84
$71
6. Value of manure (from Table 13, line 12)
$1,907
$3,815
$7,629
7. Net annual cost (line 4 to line 6)
$14,450
$21,414
$35,146
8. Net annual cost per animal
$96
$71
$59
Note Value of manure assumes all contained nutrients are needed and used for crop production in lieu of commercial fertilizer.
Table 7 Summary of slurry manure (tank) system annual costs
Herd size
150
300
600
1. Average investment per animal
$980
$892
$836
2. Annual operating costs (from Table 19, line 10)
$4,750
$8,643
$15,540
3. Annual fixed costs (from Table 18, line 7)
$18,117
$33,269
$62,383
4. Total annual costs (line 2 + line 3)
$22,867
$41,912
$77,923
5. Annual costs per animal
$152
$140
$130
6. Value of manure (from Table 20, line 10)
$6,096
$12,191
$24,383
7. Net annual cost (line 4 to line 6)
$16,771
$29,721
$53,540
8. Net annual cost per animal
$112
$99
$89
Note Value of manure assumes all contained nutrients are needed and used for crop production in lieu of commercial fertilizer.
Table 8 Summary of solid manure system annual costs
Herd size
150
300
600
1. Average investment per animal
$186
$120
$107
2. Annual operating costs (from Table 24, line 14)
$1,608
$3,485
$7,437
3. Annual cost to have custom irrigator land-apply holding pond effluent (from Table 25)
$2,484
$4,512
$8,568
4. Annual fixed costs (from Table 23, line 5)
$4,152
$5,125
$9,174
5. Total annual costs (line 2 + line 3 + line 4)
$8,244
$13,122
$25,179
6. Annual costs per animal
$55
$44
$42
7. Value of manure (from Table 26, line 12)
$3,171
$6,327
$12,634
8. Net annual cost (line 4 to line 6)
$5,073
$6,795
$12,545
9. Net annual cost per animal
$34
$23
$21
Note Value of manure assumes all contained nutrients are needed and used for crop production in lieu of commercial fertilizer.
Table 9 Lagoon system investment
Herd size
150
300
600
Lagoon
$13,000
$24,000
$43,000
Fencing per foot
$1,200
$1,400
$1,700
Total - Lagoon and fence
$14,200
$25,400
$44,700
Flush pit under slats
$58,000
$103,000
$194,000
Slats, concrete
$14,000
$28,000
$56,000
Total - Flush pit and slats
$72,000
$131,000
$250,000
Storage tanks/gates to flush pit
$23,000
$24,000
$26,000
Recycling pump and pipe
$6,000
$6,000
$7,000
Total — Tanks, gates, pump and pipe
$29,000
$30,000
$33,000
Consultation
$4,000
$4,500
$5,500
Total investment
$119,200
$190,900
$333,200
Average investment per animal
$794.67
$636.33
$555.33
Note Assume square lagoons that are 15 feet deep with 365 days storage, estimated cost at $2 per cut yard.
Table 10 Lagoon system: Annual fixed costs (percent of new cost)
Lagoon and fence
Equipment
Consultation
Useful life
20 years
10 years
Fixed costs as percent of new cost
Depreciation
5.0 percent
9.0 percent1
5.0 percent
Interest
4.02 percent
4.0 percent2
4.0 percent
Repairs and maintenance
1.5 percent
1.5 percent
Taxes
0.8 percent3
1.03 percent
Insurance
1.0 percent
Total
11.3 percent
16.5 percent
9.0 percent
Allows for 10 percent salvage.
Annual interest charge is 4 percent of original investment (equivalent to investment x 50 percent x 8 percent APR.)
Tax assessment varies based on value added to the property. A lagoon established on a suitable site in an area where unfavorable geological conditions predominate will add more value to the property than one established in an area with many favorable sites.
Table 11 Lagoon system: Total annual fixed costs
Herd size, 1,000-pound animals
150
300
600
1. Lagoon and fence (investment)1
$14,200
$25,400
$44,700
2. Flush pit and slats (investment)1
$72,000
$131,000
$250,000
3. Tanks, gates, pump and pipe (investment)1
$29,000
$30,000
$33,000
4. Consultation1
$4,000
$4,500
$5,500
5. Lagoon and fence (ln 1 x 11.3 percent)2
$1,605
$2,870
$5,051
6. Flush pit and slats (ln 2 x 11.3 percent)2
$8,136
$14,803
$28,250
7. Tanks, gates, pump and pipe (ln 3 x 16.5 percent)2
Assume square lagoons that are 15 feet deep with 365 days storage, estimated cost at $2 per cut yard.
Transferred from Table 9.
Transferred from Table 10.
Table12 Lagoon system: Annual operating costs
Herd size
150
300
600
Operating recycle pump
1. Size electric pump
1.5 hp
3 hp
5 hp
2. Annual pumping time (5 hours daily x 365 days)
1,825 hours
1,825 hours
1,825 hours
3. Cost per hour (1kw x hp x $.07 per kw)
$0.11
$0.21
$0.35
4. Annual pumping costs (line 2 x line 3)
$192
$383
$639
Irrigation lagoon annual pumping cost
5. Estimated acre-inches to pump annually from lagoon design
11.1
19.8
36.4
6. Custom pumping charge per hour1
$70
$70
$70
7. Annual lagoon pumping costs (line 5 x line 6) + $300 setup
$1,077
$1,686
$2,848
8. Check labor per year2
11 hours
20 hours
36 hours
9. Annual labor costs (line 8 x $8 per hour)
$88
$160
$288
10. Total operating costs (line 4 + line 7 + line 9)
$1,357
$2,229
$3,775
Assume a traveling gun pumps 500 gallons per minute, which allows pumping 1 acre-inch per hour.
Check labor required to inspect the irrigation system periodically to determine if the traveling gun and equipment are operating adequately. Assume 1 hour per hour of irrigator operation.
Table 13 Lagoon system: Value of manure to plant production
Herd size
150
300
600
Nutrients produced per year1
1. Ammonia nitrogen
3,600 pounds
7,200 pounds
14,400 pounds
2. Organic nitrogen
450 pounds
900 pounds
1800 pounds
3. P2O5 (phosphate)2
3,150 pounds
6,300 pounds
12,600 pounds
4. K2O (potash)2
4,050 pounds
8,100 pounds
16,200 pounds
Fertilizer nutrient equivalent available
5. Ammonia nitrogen (line 1 x 60 percent)3
2,160 pounds
4,320 pounds
8,640 pounds
6. Organic nitrogen (line 2 x 62 percent)3
279 pounds
558 pounds
1116 pounds
7. P2O5 (line 3 x 95 percent)3
2,993 pounds
5,985 pounds
11,970 pounds
8. K2O (line 4 x 95 percent)3
3,848 pounds
7,695 pounds
15,390 pounds
Value of fertilizer equivalents
9. Nitrogen (ln 5 + ln 6) x $0.30 per pound)
$732
$1,463
$2,927
10. Phosphate (line 7 x $0.20 per pound)
$599
$1,197
$2,394
11. Potash (line 8 x $0.15 per pound)
$577
$1,154
$2,309
12. Total value of fertilizer equivalent
$1,907
$3,815
$7,629
13. Minimum number of acres to irrigate4
14.8
29.6
59.1
14. Value of fertilizer equivalent per acre (line 12 4 line 13)5
$129
$129
$129
Average analysis of lagoon waste.
P x 2.29 = P2O5 ; K x 1.21 = K2O
Average percent available to plant.
Application of 165 pounds of available nitrogen per acre for corn
Value of manure assumes all contained nutrients are needed and used for crop production in lieu of commercial fertilizer.Assumed value of the fertilizer nutrients
Assumed value of the fertilizer nutrients
Nitrogen $0.30 per pound
Phosphate $0.20 per pound
Potash $0.15 per pound
Table 14 Manure ammonia-nitrogen loss by days until worked into the soil
Days until incorporation
Ammonia-N available for crops
0 to 2
80 percent
2 to 4
60 percent
4 to 7
40 percent
more than 7
20 percent
Table 15 Manure organic nitrogen available by year
Assumes 12 feet deep excavation 8 feet beyond walls all around at bottom at a cost of $2 per cut yard including backfilling. Excavation to have sides sloped at 2:1 for workers' safety.
Assumes a 4,200 gallon tanker pulled by a 190 hp tractor for 150 head; a 12,000 gallon tanker pulled by a 325 hp tractor for 300 head; and two 12,000 gallon tankers each pulled by a 325 hp tractor for 600 head.
Assumes 8,000 gallons applied per acre for 165 pounds of N to be available for corn. Assumes 0.5 mile haul for 150 head; 0.75 mile haul for 300 head and 1 mile haul for 600 head.
Table 17 Slurry (liquid manure pit) system: Annual fixed costs (percent of new cost)
Lagoon and fence
Equipment
Consultation
Useful life
20 years
10 years
20 years
Fixed costs as percent of new cost
Depreciation
5.0 percent
9.0 percent1
5.0 percent
Interest
4.0 percent2
4.0 percent2
4.0 percent
Repairs and maintenance
0.5 percent
2.5 percent
Taxes
0.8 percent3
1.0 percent
Insurance
0.5 percent
Total
10.3 percent
17.0 percent
9.0 percent
Allows for 10 percent salvage.
Annual interest charge is 4 percent of original investment (equivalent to investment x 50 percent x 8 percent APR.)
Tax assessment varies based on value added to the property.
Assumes 300 bushels (6 ton) spreader and 100 hp MFWD tractor for 0.5 mile haul, 400 bushels (8 ton) spreader and 130 hp MFWD tractor for 0.75 mile haul, and 636 bushels (12 ton) spreader and 185 hp MFWD tractor for 1mile haul for 150 head, 300 head, and 600 head, respectively.
Assumes 2 tons of solid manure per head per year.
Table 22 Solid (dirt lot) manure system: Annual fixed costs as a percent of new cost
Holding pond and fence
Equipment1
Useful life
20 years
10 years
Fixed costs as percent of new cost
Depreciation
5 percent
9 percent
Interest2
4 percent
4 percent
Repairs and maintenance
0.5 percent
2.5 percent
Taxes
0.8 percent
1 percent
Insurance
0.5 percent
Total
10.3 percent
17 percent
Allows for 10 percent salvage.
Annual interest charge is 4 percent of original investment (equivalent to investment x 50 percent x 8 percent APR.)
1. Estimated acre-inches to pump annually from holding pond design
28
54
106
2. Custom pumping charge per hour 1
$70
$70
$70
3. Annual lagoon pumping costs (line 1 x line 2) + $300 setup
$2,260
$4,080
$7,720
4. Check labor per year2
28 hours
54 hours
106 hours
5. Annual labor costs (line 4 x $8 per hour)
$224
$432
$848
6. Total operating costs (line 3 + line 5)
$2,484
$4,512
$8,568
Assume a traveling-gun pumps 500 gallons per minute, which allows pumping one acre-inch per hour.
Check labor required to inspect the irrigation system periodically to determine if the traveling gun and equipment are operating adequately. Assume one hour per hour of irrigator operation.
Table 26A Solid manure system: Value of solid manure to plant production
Herd size, 1,000-pound animals
150
300
600
Nutrients produced per year
1. Ammonia nitrogen
2,100 pounds
4,200 pounds
8,400 pounds
2. Organic nitrogen
4,200 pounds pounds
8,400 pounds pounds
16,800 pounds pounds
3. P2O5 (phosphate)
4,200 pounds
8,400 pounds
16,800 pounds
4. K2O (potash)
6,900 pounds
13,800 pounds
27,600 pounds
Fertilizer nutrient equivalent
5. Ammonia nitrogen (line 1 x 60)1
1,260 pounds
2,520 pounds
5,040 pounds
6. Organic nitrogen (line 2 x 62 percent)2
2,604 pounds
5,208 pounds
10,416 pounds
Value of fertilizer equivalents
7. Nitrogen (line 5 + line 6) x $0.30 per pound)
$1,159
$2,318
$4,637
8. Phosphate (line 3 x 0.95 percent3 x $0.20 per pound)
$798
$1,596
$3,192
9. Potash (line 4 x 0.95 percent3 x $0.15 per pound)
$983
$1,967
$3,933
10. Total value of fertilizer equivalent
$2,940
$5,881
$11,762
11. Minimum number of acres to apply solid manure.4
23 acres
47 acres
94 acres
12. Value of fertilizer equivalent per acre (line 10 4 line 11)
$126
$126
$126
Assumes no incorporation.
Assumes same amount spread on same fields each year.
Average percent available to plant.
165 pounds of nitrogen per acre from manure.
Value of manure assumes all contained nutrients are needed and used for crop production in lieu of commercial fertilizer.
P x 2.29 = P2O5; K x 1.21 = K2O
Assumed value of the fertilizer nutrients
Nitrogen $0.30 per pound
Phosphate $0.20 per pound
Potash $0.15 per pound
Table 26B Solid manure system: Value of holding pond effluent manure to plant production
Herd size, 1,000-pound animals
150
300
600
Nutrients produced per year
1. Ammonia nitrogen
253 pounds
488 pounds
954 pounds
2. Organic nitrogen
28 pounds
54 pounds
106 pounds
3. P2O5 (phosphate)
0 pounds
0 pounds
0 pounds
4. K2O (potash)
1,268 pounds
2,446 pounds
4,779 pounds
Fertilizer nutrient equivalent
5. Ammonia nitrogen (line 1 x 60 percent)1
152 pounds
293 pounds
572 pounds
6. Organic nitrogen (line 2 x 62 percent)2
17 pounds
33 pounds
66 pounds
Value of fertilizer equivalents
7. Nitrogen (line 5 + line 6) x $0.30 per pound)
$51
$98
$191
8. Phosphate (line 3 x 0.95 percent3 x $0.20 per pound)
0
0
0
9. Potash (line 4 x 0.95 percent3 x $0.15 per pound)
$181
$349
$681
10. Total value of fertilizer equivalent
$231
$446
$872
11. Minimum number of acres to apply solid manure4
1 acres
2 acres
4 acres
12. Value of fertilizer equivalent per acre (line 10 4 line 11)
$226
$226
$226
Assumes no incorporation.
Assumes same amount spread on same fields each year.
Average percent available to plant.
165 pounds of nitrogen per acre from manure in effluent.
Value of manure assumes all contained nutrients are needed and used for crop production in lieu of commercial fertilizer.
P x 2.29 = P2O5; K x 1.21 = K2O
Assumed value of the fertilizer nutrients
Nitrogen $0.30 per pound
Phosphate $0.20 per pound
Potash $0.15 per pound
Table 27 Annual fixed costs expressed as percent of initial cost of irrigation system
Acre-inches lagoon waste pumped annually
50 to 175
175 to 300
Useful life
15 years
10 years
Depreciation
6.0 percent
9.0 percent
Interest
4.0 percent
4.0 percent
Repairs and maintenance
7.0 percent
10.0 percent
Taxes
1.5 percent
1.5 percent
Total fixed costs
18.5 percent
24.5 percent
Note Based on used equipment with above average maintenance and care.
Table 28 Traveling gun system: Annual fixed costs
Acre-inches lagoon waste pumped annually
50 to 175
175 to 300
Initial cost
percent
Annual fixed costs
percent
Annual fixed costs
1. Traveling gun1
$10,000
18.5
$1,850
24.5
$2,450
2. PTO pump, 500 gpm1
$3,000
18.5
$555
24.5
$735
3. Agitation pump2
$3,500
18.5
$648
24.5
$858
4. Aluminum pipe1
$4,200
18.5
$777
$8,400
24.5
$2,058
5. Total annual fixed cost
$3,830
$6,101
Workable used equipment.
Not needed if you have a solids separator.
Table 29 Annual ownership and operating costs for a used traveling gun for lagoon system
Herd size, 1,000-pound animals
150
300
600
Annual operating costs
1. Acre-inches of effluent1
11.1
19.8
36.4
2. Agitation pump time2
11.1 hours
19.8 hours
36.4 hours
3. Minimum acres spread over3
14.8 acres
29.6 acres
59.1 acres
4. Number times system set up4
2 times
3 times
6 times
5. Set up time5
16 hours
24 hours
48 hours
Power costs
6. Irrigation pump (line 1 x $27 per hour 80 hp, includes fuel)7
$300
$535
$983
7. Agitation pump (line 2 x $30.67 per hour 100 hp)7
$340
$607
$1116
8. Laying pipe (line 5 x 25 percent6 x $27 per hour)7
$108
$162
$324
Labor costs
9. Check labor8 (from line 1)
11.1 hours
19.8 hours
36.4 hours
10. Total labor (line 5 + line 9)
27.1 hours
43.8 hours
84.4 hours
11. Total labor costs (line 10 x $8 per hour)
$217
$350
$675
12. Total annual operating costs (add lines 6, 7, 8 and 11)
$965
$1,654
$3,098
13. Total annual fixed costs (Table 28, line 5)
$3,830
$3,830
$3,830
14. Total annual costs (line 12 + line 13)
$4,795
$5,484
$6,928
15. Cost per acre-inch (line 14 line 1) or per hour operation
$432
$277
$190
Transferred from Table 12, line 5; also irrigation operating hours.
Agitator hours equal to pumping hours.
Transferred from Table 13, line 13.
One setup per 10 acres.
Eight hours labor per set up.
Assume tractor operates 25 percent of time required to lay pipe.
Tractor power cost taken from "Doane's Machinery Custom Rates Guide, 2002."
Check labor is used to check the irrigation system periodically to determine if the system is operating adequately. Assume continuous monitoring during land application.