Chemical and Biological Technologies in Agriculture

Table 2 Average yields of different treatments during 2004–2009

From: Effect of different fertilization managements on nitrate accumulation in a Mollisol of Northeast China

Year	CK	FC	RF	CRF
2004	7.2 ± 1.0b	9.2 ± 0.8a	9.2 ± 0.5a	8.9 ± 0.9a
2005	6.8 ± 1.4b	10.9 ± 0.5a	10.0 ± 0.5a	10.9 ± 0.5a
2006	4.2 ± 0.8b	13.6 ± 0.7a	13.7 ± 0.7a	13.6 ± 0.9a
2007	4.3 ± 0.4b	10.8 ± 0.9a	10.5 ± 0.8a	10.6 ± 0.9a
2008	5.5 ± 0.6b	10.2 ± 1.6a	11.1 ± 0.8a	10.9 ± 0.6a
2009	4.8 ± 0.8b	9.7 ± 0.6a	10.4 ± 0.8a	10.0 ± 0.5a

Mean values in each line in the same year followed by different letters are significantly different at the 0.05 level

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