Table 3: Total inputs of organic matter (kg ha−1) incorporated into the soil over the period 2000–2003.

Treatment2000/20012001/20022002/2003 Total accumulated
FallowBarleyVetch

Chemical8049 a 010740 a18789 a
Organic8792 a2500 8024 b19316 a
No fertilization9267 a 0 9358 ab18625 a

Average8703 833 937418910

Different small letters in the same column indicate significant differences at .