08/0169 - Response to Information Request [As Published] · 132008.169

 

 

Seaview Terrace Rehabilitation Plan 9

All weed species are to be removed according to the methods set out in Table 5.

Particular care must be taken to avoid poisoning native species, particularly young
saplings and native grasses and forbs. Care must also be taken due to the porous
nature of sand and the site layout (hill sloping to a creek and Sunshine Beach).

Table 5 - Weed Control Methods

 

1. Hand Removal

Removal of small weeds by hand, To be employed for weeds where the entire root
system can be easily removed by hand whilst minimising soil disturbance. Care is
necessary to ensure seed is not disbursed. Plants likely to restrike (eg Singapore. Daisy)
or set propagules must be removed from site.

 

2. Crown or underground stem removal

Employed for plants growing from a solid central crown below ground jevel such as

Protasparagus aethiopicus:

= a blade is used to severe the roots from the central crown;

= severing the attached roots and removing the crown or underground stem with the
plant;

® seed heads must be removed prior to crowning.

Cut material and seeds are to be removed from site.

 

3. Cut stump method

This method is ideal for woody plants and vines without aerial tubers:

= cut the stem close to the ground, if possible below the lowest branch;

= immediately (with 30 seconds) apply herbicide using a small squeeze bottle to the cut
surface;

« Generally 1 part Glyphosate (or similar product) to 1.5 parts of water is suitable to
achieve a kill with most species

Cut material will be left on site to enhance fauna habitat, except where, in the judgement of

the Contractor the material is likely to restrike (e.g. Singapore Daisy) or set propagules. in

this case material is to be transported as waste from the site and not utilised onsite.

 

4. Spraying

Useful for grasses and herbaceous species. Care must be undertaken to avoid drift by
selecting appropriate nozzles, adjusting droplet size, spraying in jow wind conditions and
keeping the spray head close to the target plant.

Spot spraying: Undertaken manually with a knapsack or motorised spray unit. Knapsack
foliar spraying will be employed for the preparation of planting areas, the selective target of
individual weeds in planting beds or rehabilitation areas as part of bush rehabilitation and
part of on-going maintenance. Tall dead standing grass and herbaceous weeds shall be
brushcut prior to planting areas,

 

 

 

 

§. Chipping method

Employed for trees and shrubs to be left in situ to naturally decay:

= shallow cuts are made just under the bark into the living tissue with a small axe as close
to the ground below the lowest branch; ys

= herbicide applied with a squeeze bottle immediately (within 30 seconds) into the
exposed cut surface;

* continue cuts around the trunk at the same level, with 5 cm gaps between each cut;

© Generally 1 part Glyphosate (or similar product) to 1.5 parts of water is Suitable to

achieve a kill with most species the.

Generally standing trees shail be left to rot in sifu, especially on steep slopes where tree

roots are maintaining slope stability and preventing erosion. However, once senescent, it

may be appropriate to fell the tree (without causing damage to rehabilitation) if it poses a

safety hazard or significantly reduces site amenity.

 

 

CEPLA

CH012_Rehab_R_vers2_4_3_09.doc 5 March 2009