Manure Summary Report

Large pile of manure or compost steaming in a grassy field, with a wooded area in the background on a cool morning.

Source: Adobe Stock #470125262

Updated: August 11, 2026

Manure Summary Report (2026)

Introduction

The University of Maryland Agricultural Nutrient Management Program compiled and summarized manure and compost analyses that were used to develop nutrient management plans from 2017 through 2026. Samples were categorized by livestock species or compost, and their solid, semi-solid, or liquid status. Each manure type includes the number of samples used to calculate the average values.

The report provides the mean, minimum, maximum, and median percentages for total nitrogen (Total N), ammonium nitrogen (Ammonium-N), phosphate ( P₂O₅), potash ( K₂O), and moisture. In some situations the manure summary report may be used instead of a laboratory manure or compost analysis to develop a nutrient management plan. For guidance on the use of these values, see 'Is a lab analysis required for my organic nutrient source?'

Beef Liquid
Beef Liquid
Beef Solid
Beef Solid
Beef Semi-Solid
Beef Semi-Solid
Dairy Liquid
Dairy Liquid
Dairy Solid
Dairy Solid
Dairy Semi-Soild
Dairy Semi-Soild
Horse
Horse
Poultry: Broilers
Poultry: Broilers
Poultry: Layers
Poultry: Layers
Sheep
Sheep
Swine Solid
Swine Solid
Swine Liquid
Swine Liquid
Compost
Compost

Beef Liquid

**Beef Liquid - 2017 through 2025 (31 samples)**
Statistic	N (total) %	NH_4-N %	P₂O₅ %	K₂0 %	Moisture %
Mean	0.190	0.058	0.114	0.232	93.462
Minimum	0.012	0.008	0.013	0.043	56.200
Maximum	0.550	0.180	0.510	1.176	99.700
Median	0.170	0.050	0.100	0.190	94.600

Beef Solid

**Beef Solid - 2017 through 2025 (654 samples)**
Statistic	N (total) %	NH_4-N %	P₂O₅ %	K₂0 %	Moisture %
Mean	0.73	0.10	0.43	0.84	65.46
Minimum	0.12	0.00	0.00	0.03	6.76
Maximum	2.75	1.20	2.96	4.71	87.50
Median	0.63	0.07	0.34	0.66	70.20

Beef Semi-Solid

**Beef Semi-Solid - 2017 through 2025 (154 samples)**
Statistic	N (total) %	NH_4-N %	P₂O₅ %	K₂0 %	Moisture %
Mean	0.38	0.06	0.21	0.38	83.27
Minimum	0.14	0.00	0.06	0.06	80.02
Maximum	0.96	0.35	0.77	1.34	95.60
Median	0.35	0.04	0.19	0.33	83.00

Dairy Liquid

Dairy Liquid - 2017 through 2025 (331 samples)
Statistic	N (total) %	NH_4-N %	P₂O₅ %	K₂0 %	Moisture %
Mean	0.17	0.07	0.09	0.22	95.36
Minimum	0.01	0.00	0.00	0.00	82.50
Maximum	1.54	1.51	0.41	1.76	100.00
Median	0.16	0.06	0.08	0.19	95.93

Dairy Solid

Dairy Solid - 2017 through 2025 (288 samples)
Statistic	N (total) %	NH_4-N %	P₂O₅ %	K₂0 %	Moisture %
Mean	0.64	0.09	0.34	0.78	70.13
Minimum	0.19	0.00	0.06	0.08	29.31
Maximum	1.87	0.47	1.73	4.09	84.30
Median	0.58	0.06	0.30	0.66	74.08

Dairy Semi-Solid

Dairy Semi-Solid - 2017 through 2025 (106 samples)
Statistic	N (total) %	NH_4-N %	P₂O₅ %	K₂0 %	Moisture %
Mean	0.39	0.07	0.22	0.43	84.28
Minimum	0.11	0.00	0.03	0.06	76.06
Maximum	0.79	0.40	0.69	1.08	98.00
Median	0.36	0.05	0.20	0.39	83.13

Horse

Horse - 2017 through 2025 (246 samples)
Statistic	N (total) %	NH_4-N %	P₂O₅ %	K₂0 %	Moisture %
Mean	0.65	0.10	0.44	0.68	59.46
Minimum	0.04	0.00	0.02	0.04	6.54
Maximum	3.32	0.90	4.28	4.44	97.01
Median	0.54	0.07	0.34	0.49	64.00

Poultry: Broilers

Poultry: Broilers - 2017 through 2025 (756 samples)
Statistic	N (total) %	NH_4-N %	P₂O₅ %	K₂0 %	Moisture %
Mean	2.71	0.36	2.48	2.93	29.23
Minimum	0.63	0.00	0.16	0.11	7.42
Maximum	4.82	2.55	7.08	6.98	75.19
Median	2.80	0.23	2.44	2.96	27.24

Poultry: Layers

Poultry: Layers - 2017 through 2025 (76 samples)
Statistic	N (total) %	NH_4-N %	P₂O₅ %	K₂0 %	Moisture %
Mean	2.68	0.60	2.29	1.72	45.54
Minimum	0.40	0.00	0.32	0.37	6.83
Maximum	5.95	1.46	4.88	3.36	71.48
Median	2.66	0.62	2.05	1.65	47.01

Sheep

Sheep - 2017 through 2025 (38 samples)
Statistic	N (total) %	NH_4-N %	P₂O₅ %	K₂0 %	Moisture %
Mean	0.98	0.14	0.68	1.25	61.02
Minimum	0.40	0.01	0.10	0.09	13.84
Maximum	2.35	0.51	1.71	3.19	82.30
Median	0.91	0.10	0.61	1.18	65.59

Swine Solid

Swine Solid - 2017 through 2025 (22 samples)
Statistic	N (total) %	NH_4-N %	P₂O₅ %	K₂0 %	Moisture %
Mean	1.21	0.17	0.57	0.61	73.26
Minimum	0.18	0.02	0.02	0.08	20.19
Maximum	3.25	0.49	2.01	2.99	99.53
Median	1.16	0.15	0.40	0.27	77.47

Swine Liquid

Swine Liquid - 2017 through 2025 (9 samples)
Statistic	N (total) %	NH_4-N %	P₂O₅ %	K₂0 %	Moisture %
Mean	0.184	0.121	0.064	0.144	99.114
Minimum	0.089	0.041	0.02	0.079	98.5
Maximum	0.246	0.201	0.142	0.19	99.53
Median	0.180	0.110	0.050	0.144	99.140

Compost

Compost - 2017 through 2025 (44 samples)
Statistic	N (total) %	NH_4-N %	P₂O₅ %	K₂0 %	Moisture %
Mean	0.92	0.03	0.48	0.54	46.73
Minimum	0.18	0.00	0.10	0.12	25.40
Maximum	3.19	0.16	2.24	3.80	68.50
Median	0.81	0.01	0.39	0.35	48.63

Download Manure Summary Report (PDF)

Resources

Back to ANMP Manure Sampling, Testing, and Quantity Estimation Homepage
Back to ANMP Manure Sampling, Testing, and Quantity Estimation Homepage
Comparison of Some Labs Testing Manure
Comparison of Some Labs Testing Manure
Is a lab analysis required for my organic nutrient source?
Is a lab analysis required for my organic nutrient source?

Manure Summary Report

Manure Summary Report (2026)

Introduction

Beef Liquid

Beef Solid

Beef Semi-Solid

Dairy Liquid

Dairy Solid

Dairy Semi-Soild

Horse

Poultry: Broilers

Poultry: Layers

Sheep

Swine Solid

Swine Liquid

Compost

Beef Liquid

Beef Solid

Beef Semi-Solid

Dairy Liquid

Dairy Solid

Dairy Semi-Solid

Horse

Poultry: Broilers

Poultry: Layers

Sheep

Swine Solid

Swine Liquid

Compost

Resources

Back to ANMP Manure Sampling, Testing, and Quantity Estimation Homepage

Comparison of Some Labs Testing Manure

Is a lab analysis required for my organic nutrient source?