Nitrous oxide emission from upland soil amended with different animal manures

Applied Biological Chemistry

Table 3 Cumulative N₂O–N emission from soils amended with different rates of animal manures

Application rate (Mg ha⁻¹)	Animal manure
Application rate (Mg ha⁻¹)	Chicken	Cow	Pig
Cumulative N₂O–N emission (kg ha⁻¹ year⁻¹)
0	7.96^c	7.96^b	7.96^c
10	11.4^b	10.8^a	13.1^b
20	13.1^a	11.5^a	14.7^a
Mean¹	10.8^B	10.1^C	11.9^A

¹Mean: mean value across application rates. Upper and lower case letters are for column and row comparison. Values with the same letter within a column or row are not significantly