R. David Myers

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Manure Management Fundamentals of Nutrient
Management June 18, 2012
R. David Myers Extension Educator, Agriculture
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Fertilizer Options?
Legumes
Manure
Commercial Fertilizer
Bio-Solids
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Nutrient Managementhttp//www.agnr.umd.edu/users/
waterqual/themes/nutrient_management/manmh2006.htm

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• Calculating the Volume of Animal Manure Produced
  in an Agricultural Operation.

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Beef/Dairy/Poultry/Swine Manure

• Factors that Cause Variation in the Plant
  Nutrient Levels in Manure

UMD-AGNR Photo Archive http//www.photos.umd.edu
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• Storage and Handling May Cause Significant
  Nutrient Loss Especially Nitrogen

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Part 1 of table for estimating annual nutrient
availability after losses from different kinds of
storage. Enter total manure nutrients produced
(see example) and multiply by the relevant factor
for your storage or management system. Factor is
the percentage of nutrients retained.
Manure Storage/ Treatment System Nitrogen Nitrogen Nitrogen Phosphorus (P2O5) Phosphorus (P2O5) Phosphorus (P2O5) Potassium (K2O) Potassium (K2O) Potassium (K2O)
Manure Storage/ Treatment System N Pro-duced Factor Available N P Pro-duced Factor Available P K Pro-duced Factor Available K
Example poultry manure on sawdust per ton 60 0.50 30 58 1.0 58 52 1.0 52
Open lot or feedlot 0.50 0.95 0.70
Storage (slurry manure, bottom loaded storage) 0.85 1.0 1.0
Storage (liquid manure, top loaded storage) 0.70 1.0 1.0
Storage (pit beneath slatted floor) 0.75 1.0 1.0
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Part 2 of table for estimating annual nutrient
availability after losses from different kinds of
storage.
Manure Storage/ Treatment System Nitrogen Nitrogen Nitrogen Phosphorus (P2O5) Phosphorus (P2O5) Phosphorus (P2O5) Potassium (K2O) Potassium (K2O) Potassium (K2O)
Manure Storage/ Treatment System N Pro-duced Factor Available N P Pro-duced Factor Available P K Pro-duced Factor Available K
Example poultry manure on sawdust per ton 60 0.50 30 58 1.0 58 52 1.0 52
Poultry manure in pit beneath slatted floor 0.85 1.0 1.0
Poultry manure on shavings or sawdust held in house 0.50 1.0 1.0
1-Cell anaerobic treatment lagoon 0.20 0.35 0.65
Multi-cell anaerobic treatment lagoon 0.10 0.35 0.65
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• Using a Laboratory Manure Analysis, Calculate the
  Plant Available Nitrogen (PAN).

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Ammonium Conservation Factors - Former(No Longer
Valid)
Day Incorporated Conservation Factor
Injected 1.00
1 0.80
2 0.64
3 0.48
4 0.32
5 0.16
6 0.00
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Ammonia conservation factors for liquid manures
and organic residuals (lt10 dry matter,gt90
moisture)
Time to incorporation Conventional tillage Conservation tillage No-till or tillage gt3 days
Inject 1.0 1.0
lt1 hr .95 .70
1-3 hrs .90 .68
3-6 hrs .75 .60
6-12 hrs .65 .55
12-24 hrs .60 .53
1-2 days .55 .50
2-3 days .50 .48
gt3 days (no-till) .45 .45 .45
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Ammonium conservation factors for solid manures
and organic residuals(gt10 dry matter,lt90
moisture)
Time to incorporation Conventional tillage Conservation tillage No-till or tillage gt3 days
lt1 hr .96 .66
1-3 hrs .93 .64
3-6 hrs .78 .57
6-12 hrs .71 .53
12-24 hrs .63 .49
1-2 days .58 .47
2-3 days .53 .44
gt3 days (no-till) .35 .35 .35
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Ammonium conservation factors for poultry litter
Time to incorporation Conventional tillage Conservation tillage No-till or tillage gt14 days
lt1 day .97 .85
1-2 days .92 .82
3 days .88 .80
4 days .84 .78
5 days .81 .77
6 or 7 days .77 .75
8-14 days .74 .73
gt14 days (no-till) .72 .72 .72
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•  Using a Laboratory Manure Analysis, Calculate
  the Manure Application Rate Required to Meet a
  Specified Nutrient Requirement

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http//www.agry.purdue.edu/mmp/webcalc/nutAvail.as
p
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R. David Myers Extension Educator myersrd_at_umd.edu
www.annearundel.umd.edu
Thank You! Any Questions?