SA - Burdekin WQIP Cane Implementation Plan Irrigation_FINAL 080319 (1) | Page 57

Moderate Broadcast application , at up to 100 wet tonnes per hectare 0 % 0 % High Broadcast application , more than 100 wet tonnes per hectare 20 % 35 %

Lower Burdekin / Don

6.1.3 Herbicide management The following points are highlighted for the current adoption of herbicide management practices :

� A majority of the region applies residual herbicides in plant cane ( 80 per cent ) and ratoon cane ( 70 per cent ) with complete coverage across the block ( High risk ). In ratoon cane , the greatest proportion use single application in each crop ( 35 per cent Haughton / Barratta and 40 per cent Lower Burdekin / Don ), but the full range of practices are adopted across the region .

� Pesticide product choice is based on efficacy and cost effectiveness ( High risk ) for 95 per cent of the region .

� Cane grub control is not controlled with insecticides ( Lowest risk ) in 65 per cent of the Haughton / Barratta and 35 per cent of the Lower Burdekin / Don . In both areas , 20 per cent apply insecticides to each block at plant and reapplied at least once during the ratoon cycle ( High risk ). In the Lower Burdekin / Don , 29 per cent apply insecticides to blocks with observed damage or blocks with high risk of infestation , with more than one application per crop cycle . 10 per cent of both areas only apply once per crop cycle with observed damage or high risk areas ( Lowest risk ).

Table 6.4 . Paddock to Reef program adoption data for herbicide management in the Lower Burdekin showing the representative proportions of responses from growers . Data based on benchmarking exercise for 2016- 17 . Rows in bold highlight the greatest proportions for each question . Source : DAF , Paddock to Reef Management Practice Adoption Program Area , October 2018 . Note – WQ risk and weightings to be checked .

Residual herbicides are applied in a band over the row only . Inter-row spaces are managed with knockdowns .

15 % 10 %

No use of residuals 5 % 10 %

Low Residual herbicides are applied in a band over the row only . Inter-row spaces are managed with knockdowns .

10 % 10 %

Lowest No use of residuals 20 % 20 %

Complete coverage across the block but incorporate by overhead irrigation within 3 weeks of application

30 % Which best describes how you use residual herbicides in ratoons ? ( Assumption that all are as per label requirements )

Whenever considered useful . Multiple applications if required . 3 % 8 % Single application in each ratoon crop 35 % 40 %

I use knockdowns plus ' spike ' rate of residuals ( e . g . less than 500g of Diuron ) on all blocks

27 % 27 %

Lower Burdekin / Don

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