Previous studies in the region have indicated that pasture leys
are the only commonly used management practice capable of increasing SOC stocks in Queensland/northern New South Wales grain-cropping systems (Dalal et al.
Final infiltration rate was greater under continuous wheat RT than under all other treatments and lowest following both pasture leys
with 100% cover, but similar under all treatments at existing and 0% cover (Fig.
generally had a positive impact on soil C stores and microbial activity relative to adjoining fields in which the preceding crop had been winter wheat (Table 5), with the largest effects being measured in the deeper (0.
Therefore, the N mineralisation estimates for shoot residues reported in this paper and by Thompson and Fillery (1997) are likely to be more representative of pasture residues in traditional pasture ley
farming systems in southern Australia.
Shen Y, Chen L, Yang J, Wang M, Nan Z (2008) Organic matter fractions and carbon mineralisation in perennial pasture leys
on erodible silt soil.
The use of kikuyu (Pennisetum clandestinum) and Rhodes grass (Chloris gayana) pasture leys
were shown by Bell et al.
On the basis of such observations, use of pasture leys
in rotation with intensive cropping is recommended on krasnozems to maintain C inputs and maintain physical fertility, especially structural stability (Bridge and Bell 1994).