9 Attachment 1 : Paddock to Reef Sugarcane Water Quality Risk Framework
DRAFT version as at 12 October 2018
Soil Management
Crop Residue Cover
Controlled machinery traffic
Land management during sugarcane fallow
Preparing land for planting
Weighting Relative Water Quality Risk
High |
Moderate |
Moderate - Low |
Lowest |
40 % |
Cane trash blanket is not retained . |
Cane trash blanket is retained |
Cane trash blanket is retained , including as fallow cover after final |
|
|
on ratoons . |
ratoon . |
20 % At least 60 per cent of field is trafficked by machinery every year . Machinery operates on different wheel spacings .
Between 37 per cent and 60 per cent of the field is trafficked by machinery every year . Most machinery operates on the same wheel spacing and is matched to row spacing .
Harvesters and haul-outs are on different wheel spacings .
20 % |
Bare fallow or no fallow . |
Soil cover maintained during the fallow phase . Trash blanket and sprayed cane or growth of a legume / cover crop when opportunity arises . Weeds are controlled with knockdown herbicides . |
20 % |
6 or more passes of tillage |
Up to 5 passes of tillage |
|
equipment . |
equipment . |
All plant cane blocks are prepared with a fine tilth .
Plant cane is established after a fallow using zonal tillage or the minimum number of passes required for soil and conditions .
Less than 36 per cent of the field is trafficked by machinery every year .
All machinery wheel spacings matched to row spacing for all operations including harvesters and haul-outs . GPS guidance is used all operations except harvesters and haul-outs .
Legume or cover crops grown on all fallow land , and crop residues are maintained .
Zonal tillage only , less than 60 per cent of area is cultivated . Zonal tillage after a fallow . Only the row area is cultivated , inter-rows are left un-cultivated .
All machinery wheel spacings matched to row spacing for all operations including harvesters and haul-outs . GPS guidance is used for all field operations , including harvesters and haul-outs . Legume or cover crops are planted on all fallow land , without tillage . Crop residues are maintained .
No tillage .
Plant cane is established after fallow using 1 tillage operation or less .
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