Nitrous oxide emission from wetland soil following single and seasonal split application of cattle manure to field tomato (Lycopersicon esculentum, Mill var. Heinz) and rape (Brassica napus, L. var. Giant) crops

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Table 7 Estimated N lost in N₂O emission per unit dry matter yield after single manure application

Trts	First tomato			First rape			Second tomato			Second rape
Trts	DM yield (T ha⁻¹)	N emitted in N₂O (kg ha⁻¹)	kg N emitted per T DM	DM yield (T ha⁻¹)	N emitted in N₂O (kg ha⁻¹)	kg N emitted per T DM	DM yield (T ha⁻¹)	N emitted in N₂O (kg ha⁻¹)	kg N emitted per T DM	DM yield (T ha⁻¹)	N emitted in N₂O (kg ha⁻¹)	kg N emitted per T DM
T1	3.0	0.44	0.15	10.5	0.43	0.04	3.1	0.32	0.10	10.1	0.33	0.03
T2	5.5	0.76	0.14	12.0	0.90	0.08	7.0	0.51	0.07	11.0	0.65	0.06
T3	8.5	0.97	0.11	16.5	1.00	0.06	9.5	0.60	0.06	16.5	0.75	0.05
Fpr	*	*	*	*		*	*	*	*	*	*	*
LSD (5 %)	0.1	0.17	0.01	0.2	0.21	0.01	2.5	0.07	0.01	0.4	0.10	0.01
CV%	10.8	5.3	1.8	1.0	3.8	9.6	24.6	7.1	3.2	1.7	5.2	4.1

Trts—treatments, DM—dry matter, T1—0 Mg ha⁻¹ manure (control), T2—15 Mg ha⁻¹ manure, T3—30 Mg ha⁻¹ manure
* p < 0.05