This is particularly essential in fields under CC, which showed the lowest PAWC
among the land uses.
Yield is a function of PAWC
at sowing and ICR, whereas PAWC
could be defined as DUL-CLL.
The potential environmental benefits would be increased rooting depth, increased PAWC
, and reduced concentrations of NaCl in the soil profile (Y.
On a soil with low PAWC
the reductions in deep drainage were greater than for a soil with high PAWC
Box plots (not shown) suggested that, except for OC and PAWC
, the two GMUs were different in their mean values for all other soil properties.
was 156mm under cropping and 180mm under pasture.
Because most sites were long-term trial or catchment studies, field-measured bulk density and PAWC
(Dalgliesh and Foale 1998) were often available.
8 t/ha) across zones with different PAWC
, but in a below-average season, the variation might only be 1.
6 g4* 27 Plot PAWC
Geology Australian Soil Classification (A) Open, ungrazed 8 117 MS Black Sodosol C 74 MS/SS (B) Brown Sodosol 2 101 MS Leptic Rudosol D 65 MSe Leptic Rudosol (C) B 38 MSe Leptic Rudosol (C) E n.
Recent studies have estimated PAWC
and soil depth from geophysical data (Wong et al.
In this paper, we have chosen to develop PTFs for DUL and LL to allow calculation of PAWC
from these values.
3), which is reasonable as they have similar A-horizon texture and structure and the model is already accounting for differences in PAWC