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

Treatment 2000/2001 2001/2002 2002/2003 Total accumulated Fallow Barley Vetch Chemical 8049 a 0 10740 a 18789 a Organic 8792 a 2500 8024 b 19316 a No fertilization 9267 a 0 9358 ab 18625 a Average 8703 833 9374 18910

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