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Table 1.5(a)
State
Land area devoted to cropping and pasture in Southern Australia (Bartle et al,
2007)
Millions of hectares by rainfall zone
(mm mean annual rainfall)
Totals
300-400 400-500 500-600
New South Wales 4.2 7.3 5.3 16.8
South Australia 4.3 2.5 1.1 7.9
Victoria 2.9 2.1 2.2 7.2
Western Australia 10.9 3.8 1.9 16.6
Totals 22.3 15.7 10.5 48.5
Table 1.5(b)
Mean annual increment to harvestable size 1 of mallees growing in two row belts
for each rainfall zone (adapted from Peck et al 2011) 2
Rainfall zone (mm mean annual rainfall)
300-400 400-500 500-600
Age at harvest 7 5 4
MAI (green tonnes per
hectare per year)
7 14 15
1
Harvestable size is defined as when the crop yields about 20 green tonnes per kilometre of
row, which allows an efficient pour rate of at least 60 gt/h to be achieved by the harvester.
2
The data have been adjusted to allow for the differences in assumed belt widths; Peck et al
(2011) assumed a 6 m width occupied by a 2 row belt, we have assumed a 7 m width, with a 3
m inter-row spacing to allow better access for harvesting.
Table 1.5(c)
Potential annual biomass production for mallees growing in two row belts, by
rainfall zone
Rainfall zone (mm mean annual rainfall)
300-400 400-500 500-600
Total annual
biomass
production
Assumed proportion of
farmland planted to
3% - 5% 4% - 6% 5% - 7%
20