Themeda triandra
Upper Shoalhaven and Upper Deua Landcare Network
Windellama Primary School Flow Forms Braidwood Urban Landcare Sheep Station Creek Landcare Upper Deua Landcare Majors Creek Broom Bash
Bourkes Crossing
 
BOMBAY LANDCARE GROUP
 
Description: The objectives of the group are to identify and, where possible repair environmental degradation in the Bombay subcatchment of the Shoalhaven River, and to improve overall land management skills leading to more economically sustainable forms of landuse. Major projects include the rehabilitation of the riparian zone, by fencing the creeks. Other projects have included trialling the treatment of salinity and farm forestry. The Landcare group is now focused on managing riparian weeds across the catchment.

1999 projects

Riparian Zone maintenance and extension on a tributary of Bombay Creek 1999 -

Project aims to stabilise a spillway flowing into Bombay creek by widening to reduce flow velocity. The second aim is to fence and replant a tributary of the Bombay Creek.

1998 projects

Riparian Zone Rehabilitation - Bombay Catchment, Part Shoalhaven River 1998 - 1999

To regenerate riparian vegetation and wildlife habitat, to curtail creek and riverbank erosion and to improve water quality. To be achieved by fencing to exclude stock, provision of alternative water supplies, natural regeneration and seedling plantings, weed control, and installation of "rock sausages" for bank stabilisation. Outcomes will be vegetated corridors along creeks and river connecting forested ranges to remnant bushland area, reduced bank erosion, improved water quality and better stock and pasture management.

1997 projects

Bombay Landcare Group Farm Forestry Demonstration Project 1997 -

Farm forestry project in a degraded paddock adjacent to Bombay Creek. Paddock suffers from water logging, salinity, and contains severely compacted soils. The project aims to trial Cypress lusitanica as viable farm forestry timber in a region of medium rainfall and cold winter temperatures.

Riparian Zone Extension - Bombay and Little Bombay Creeks 1997 - 1998

The project is a continuation of the successful riparian management and rehabilitation project conducted on the Bombay and Little Bombay Creeks commencing in the 1992/93 financial year. The aim of the project is to fence off a further 2.5 km section of the creeks, build dams for alternative stock water, and plant riparian tree species in the fenced off areas. Funding is being sought for 1 financial year. On completion of this stage, further funding will be sought for major structural works to stabilise the banks of the creeks.

1996 projects

Bombay Salt Action project 1996 -

Regeneration of salt scald at 'Nunlef' through revegetation. Thirteen piezometers were placed throughout the Bombay area, with three being placed at 'Nunlef'.

1994 projects

Lime and Lime Substitute Trial on Two Acid Bombay Soils 1994 - 1999

The objective of the project was to compare the effects of lime and several lime substitutes with and without superphosphate on the growth of lucerne and sub-terrainian clover and on the pH of the surface soil. Two sites were chosen at each of which six treatments were applied; Lime at 2.5 t/ha, lime at 5t/ha, sewage ash at 5t/ha, N-Viro soil at 7.5 t/ha, earth worm castings at 5 t/ha and a control. Each treatment was replicated twice. The main plots were sub-divided into 2 x 1m square plots, to one of which superphosphate was applied at 500 kg/ha.

1993 projects

Bombay Salinity Reclamation demonstration 1993 - 1994

We aimed to demonstrate how an incipient salinity problem can be recognised and treated before developing into major salt scalding and erosion. The work has been in the discharge area because the upper catchment (recharge) is timbered and the middle catchment is sown to perennial pasture. Following topographic and Electromagnetic induction (EM) surveys, six piesometers have been installed to allow monitoring of water and salt levels. A discharge area has been fenced, the salt scald itself has been seeded to salt tolerant grass and clover species and mulched with straw. Trees and shrubs have been planted in the surrounds. Surface drainage has been improved by installing a road culvert.

Riparian Zone Management of Bombay Creek 1993 -

The project is a demonstration of streambank erosion management techniques. The aim is to develop and execute a plan which combines riparian zone management and streambank erosion control to combat the degradation of Bombay Creek. Project is in three phases. Phase 1: Resource inventory and planning. Phase 2: Fencing of the creek. Phase 3: Tree planting and weed control.

1992 projects

Fertiliser Experiment 1992 - 1992

On two contrasting soils the aim of this non- funded project was to compare several recognised fertilizers with sewage ash and neomin, a crushed rock additive. Two replications of six treatments were applied. The treatments were; Groplus. Superphosphate, sewage ash, calphos, neomin and a control. Sub clover was used as the test crop, because we didn't want nitrogen deficiency to be a problem. (see evaluation for results).

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