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The Grains Research and Development Corporation and Land and Water Australia wanted to cap-ture these success stories, and developed SALT magazine as the appropriate means of commu-nicat

Trang 2

This is the fourth

edi-tion of SALT magazine

and it is difficult to

comprehend the changes

that have taken place since

the first edition These

changes have included major

government announcements

and new programs at both

the federal and state levels;

further revelation about the

extent and nature of the

impact of dryland salinity

Australia-wide; new industry

and educational initiatives;

and now a fresh new update of the format of

this magazine

At the time of the first edition of SALT

maga-zine, still less than two years ago, the majority of

the messages about dryland salinity were

large-ly negative: War on Salinity! Battle Against the

White Death! Salt Cancer of the Earth! So read

many of the headlines of the time

Yet even then, many success stories were to be

told Many others were taking shape Solutions

for dryland salinity do exist in many

circum-stances, and these solutions have been

success-fully tried where it counts - in the field The

Grains Research and Development Corporation

and Land and Water Australia wanted to

cap-ture these success stories, and developed SALT

magazine as the appropriate means of

commu-nicating these stories

Since then, one of the most significant events

has been the recent announcement of the Prime

Minister's National Action Plan for Salinity and

Water Quality This Plan was endorsed by all

state governments at the November 2000

meet-ing of the Council of Australian Governments

(COAG) The National Dryland Salinity

Program is proud to have contributed to this

initiative by having providedmuch of the knowledge-baseupon which the Plan builds

The National Action Plan is nificant for a number of reasons

sig-First, it will direct the largest sum

of funds ever allocated by theCommonwealth governmentspecifically towards tackling dry-land salinity nation-wide

Second, it will allocate resources

as block-funding against nity-supported plans at a regionalscale, overcoming past limitations

commu-of project-by-project support forsmall, unconnected activities

Most significantly, however, it recognises thatthere is no one solution to dryland salinity, andthat under some circumstances, the most effec-tive and profitable means of managing salinity is

to take a positive attitude towards utilisingsaline land and groundwater resources

SALT magazine is about sharing a positive

atti-tude toward the problem In some cases, the

stories in SALT magazine are about the triumphs

in overcoming a salinity problem In others, it

is about preventing one, or adapting to one

The new format and distribution of SALT

maga-zine is intended to widen the audience to ensurethat more and more people become aware aboutthe triumphs; about the solutions

Over the next few months, Australia's NationalDryland Salinity Program will itself be adapting

to the changes that are taking place In addition

to changing the format of SALT magazine, the

Program's Communications team will beimproving our national, state and regional com-munication effort Already we have appointednew State Communication Co-ordinators inNSW (Lisa Gray) and Queensland (MarkWarnick)

Kim Mitchell of Currie Communications hasrecently been appointed as the NationalCommunications Coordinator over the remain-ing life of the current Program (to June 2003).Together with Bruce Munday (SA), GeorginaWilson (WA) and Jo Curkpatrick and DianaWolfe (Vic), the new members of our team willadd great value to the research, developmentand extension effort of the Program

One final change to the management ments of the Program has been my appointment

arrange-as the fulltime National Manager This roleamalgamates the previous part-time ProgramManager position, which I formerly undertook,with the part-time National Co-ordinator posi-tion, formerly undertaken by NicholasNewland, and before him by Adrian Webb.Nicholas has now moved on to take the helm ofthe South Australian Environmental ProtectionAgency and on behalf of the Program we wishhim well

While it is trite to say that change is good; it ismore accurate to say that it is inevitable I lookforward to the changes before us with a greatdeal of enthusiasm, and remain committed toensuring that Australia's National DrylandSalinity Program and its partners remain a posi-tive source of innovative and practical researchsolutions

Australia's National Dryland Salinity Program is

a partnership in research, development andextension tackling the salinity risk to Australia'sland and water resources For further informa-tion about the Program, contact one of ourCommunication Co-ordinators (see page 23) orvisit the NDSP website at www.ndsp.gov.auWelcome to SALT magazine

Any recommendations contained in SALT magazine do not necessarily represent the policies of the

National Dryland Salinity Program partners No person should act on the contents of this publication whether as to matters of fact or opinion or other content, without first obtaining specific independent professional advice which confirms the information contained in this publication.

Editorial design & production: WDM Design & Advertising, Adelaide

Other contributors

State Governments of WA, SA, Vic, NSW, Qld and Tasmania

Richard Price, NDSP National Manager.

Richard Price

Home

Trang 3

Aproject to reverse the

effects of a major salinity

scald on Yeppoon's

Capricorn Coast, Queensland, is

being used as an educational tool to

reach landholders, councils, the

community and school children.

The salt scald, several hectares in size,

is in the catchment of Hedlow Creek,

on Old Byfield Road, 25 kilometres

from Rockhampton

Capricorn Coast Landcare Group

became involved with the problem

three years ago where it lies adjacent to

the saline Hedlow Creek

Group vice-president, Les Embrey, says

soil in the area has become very sodic

and dispersible making it particularly

prone to erosion and causing a number

of trees on a nearby property to die

"A corridor of salt tolerant species of

trees, shrubs and grasses have been

planted near the salt scald to lower the

water table and give some ground

cover," he says

"The plants were propagated by Yeppoon State

Primary School's junior Landcarers group

"Pupils from the school have worked

enthusi-astically with the Landcare group and last yearthe youngsters won the Shade and SpadeEducation Award for Arbour Day."

As the vegetation grows it is expected to lowerthe water table and link up with nearby trees

to form a wildlife corridor

The site has been used for Junior Landcare andCouncil excursions and as improvements takeplace it will be part of a remedial approach toeducate landholders and the community

A bore-hole was sunk, allowing the group tomonitor the level of the water table and saltcontent on a monthly basis

It is hoped that in the future landholders alongHedlow Creek will receive monetary assistance

to fence and revegetate riparian zones

Revegetation of ridge lines in the catchmentcould also serve to lessen the movement ofsalts through the soil profile Future work willdepend on trends in the figures

Chantelle James, Envirolink Co-ordinator for

Capricorn Coast Landcare Group,says combating dryland salinityinvolves communicating accurateinformation and practical solutions

to the broader community

She also co-ordinates 15 ly-orientated community groups thathope to achieve environmentalaction on a larger scale by poolingtalents and resources For eightmonths these groups have beenworking on a publication for theCapricorn Coast region to help thoseresidents not normally environmen-tally-minded to become aware oftrends and solutions in the area.Community interaction has included

ecological-a Giecological-ant Recological-ats Tecological-ail Grecological-ass field decological-ay forlandholders, a Waterwatch trainingday for locals concerned about waterquality, an environmental bus tripfor councillors and managers fromLivingstone Shire Council and edu-cating the younger communitythrough three junior Landcaregroups

More workshops, field days and informationevenings are planned for 2001 This is typical

of the mentoring and empowerment work byall Landcare and ICM groups acrossQueensland

The content of these educational activities will

be ascertained following analysis of resultsreceived from a landholder survey conducted

in the area for the Capricorn Coast LandcareGroup's Envirolink Project

• Les Embrey and Chantelle James spoke with John Sanderson

Scald site helps spread

the word on salinity

Key points

■Conservation efforts on a major

salt scald in the Rockhampton

region has proven a valuable

educational tool

■Numerous educational activities

involving the site are assisting to

improve community

understanding of the salinity

problem facing the region

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Our attitude to salinity changed one

night in 1988 We have hardly any

salinity on our property, although it

is certainly a very serious issue throughout

the Coorong district.

At the Agricultural Bureau meeting that night,

Steve Barnett, from what was then the

Department of Mines and Energy, showed us a

district map with the areas that were then salt

affected He then presented hydrographs

showing the rate at which saline ground water

was rising and a map of where salinity would

be in 20 years time Suddenly we could see

that if nothing was done we could lose half the

farm

Steve pointed out that local recharge is

impor-tant in our district as it feeds an unconfined

aquifer which then puts pressure on a deeper

confined aquifer This is highly saline and is

being forced to the surface, so we all need to be

doing our bit to arrest this trend When we gotout of beef in 1982 we redeveloped the prop-erty, incorporating 20 kilometres of 60 metre-wide laneways That did not work on our lightsandy loams with cows walking long distances

to the two dairies, so we decided to rubble

10 m and plant native vegetation in the other

50 m This took advantage of the fact that oneside was already fenced and when finished wewill have revegetated 100 hectares where pre-viously nothing was growing

The annual evaporation at Meningie is about

1000 mm greater than the annual rainfall, sothe typical dairy pastures of rye grass andclover are not a prospect at all Our wholeproperty is now under dryland lucerne ofwhich we renovate 10 per cent each year Welook after the lucerne by rotating stockthrough 12 ha paddocks to give the lucerne atleast 21 days to recover, controlling weeds

(mainly primrose and silver grass) and byattending to the known soil nutrient deficien-cies

Established lucerne is apparently just about asgood as native vegetation in preventing groundwater recharge As the lucerne graduallydeclines veldt grass takes over, so we alwayshave perennial plants in the paddock, but theveldt is not nearly as deep rooted and so farless effective

Lucerne underpins our whole operation, but

we don’t like relying on a monoculture forsomething as important as ground water con-trol, particularly after the devastation caused inthe late 70s by the blue-green aphid and thesalinity explosion that followed

We have a 10-year plan to put a 24 m widestrip of native vegetation down the edge ofevery paddock we renovate This takes almost

a hectare out of each paddock, but running

Farming with

negligible recharge

Case study: Philip & Diane Down Location: Meningie, South Australia Area: 1740 ha

Average Rainfall: 450 mm Enterprise: Dryland dairy milking

450 cows; Holstein Friesian stud

Home

Trang 5

east-west it will not only reduce recharge,

but also provide a very effective windbreak

which is important as we are so close to the

Southern Ocean

We started our revegetation program in

1989, planting 3000 tubestock by hand We

increased this to about 8000 per year using a

tree planter, but it was still hard work

involv-ing two people At this rate we wondered if

we would ever get to the end of our

pro-gram In 1992 we tried direct seeding and

had stunning results, despite pretty sloppy

site preparation All of a sudden this huge

goal we had set seemed achievable

The next year we did everything by the

book, except controlling the weather which

was a shocker - hot and windy After days of

crawling around on hands and knees trying

to find a germinating plant we just about

gave up, assuming that most of the seed

probably blew away But enough eventually

germinated to restore our faith that this

real-ly was the way to go These days we would

not dream of anything other than direct

seeding They might not all come up in the

year they are sown, but eventually most of

them appear You just have to be patient with

nature Our seed mixture is based on a

survey we did of nearby native scrub, soeverything is local to the district We makesure we have good weed control and groundpreparation and with experience we nowgenerally get the timing right

Rabbits used to be a problem, but the civirus seems to have reduced their numbersdramatically Hares have emerged as a morerecent problem along with kangaroos

cali-Ironically the revegetation work has

provid-ed them with a haven and this is likely to getworse as we establish more of this

Lucerne is obviously the key to productivity

on this farm and in a good year like 2000 wecan make about 600 tonnes of pit silage and

350 tonnes of hay It is also the key to oursustainability

But the revegetation is also very high on ouragenda When we started the redevelopmentthere was scarcely a tree standing on theproperty We have a long way to go, but it is

already immensely satisfying to look aroundnow and see where we have been

The network of trees and shrubs now port birds we didn’t even know existed,along with all the other elements of biodi-versity which make this a more sustainablefarm

sup-The Coorong District is a landlocked ment, so recharge reduction is about theonly way to make sure the salinity problemdoes not overtake us One of the goals of theLocal Action Plan is to reduce recharge by

catch-50 pc over the 10 years from 1994

As part of the strategy to achieve that wehave received Natural Heritage Trust (NHT)incentives to establish and manage lucerneand native vegetation This has certainlyhelped us maintain the pace of redevelop-ment and it has also encouraged lots of otherlandholders to get involved

This is one of the largest dryland dairies in

SA and we have to keep good

quali-ty feed up to the cows every day But

we also have to take a long-termview and make sure that our man-agement now ensures that we are stillhere to farm it in the future

• Philip and Diane Down spoke with Bruce Munday, NDSP Communication Coordinator (SA)

Key points

■Ground water in the region is rising

■Vigorous lucerne is very effective

at minimising recharge

■Native vegetation brings multiple

benefits

■ The Local Action Plan has

mobilised the whole district to

Opposite page: Well managed lucerne is the key to our productivity and

watertable management Above: Direct seeded windbreaks will protect every paddock Below: Multiple local species help control the watertable

and provide a biodiversity buffer to our agricultural system

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Windmills have long provided an image of security

in rural Australia, and a new side to their value has been reinforced at Corrigin, a town of 1300 residents in Western Australia's wheatbelt region.

Until scheme water was connected for the first time in 1961,

Corrigin's essential infrastructure included about 50 windmills

and wells supplying water from deep below ground The

prolif-eration of windmills even encouraged the brand name for the

local flourmill and motel

During the 1950s growing population and pressure on water

sup-plies forced townspeople to deepen bores, and creating concern

over diminishing supply But connection to the pipeline from

Mundaring Weir in 1961 appeared to solve all the problems

Like in so many towns, having unlimited water on tap brought

rapid changes to residents' habits

Within 10 years only two windmills were still in use, while

invis-ible water tables were rising through the combination of extra

water for lawns and gardens and less drawdown

By the mid-1990s alarm bells had begun to ring Waterlogging

was showing up in the south-west of the town; the hotel had to

pump out water from its cellar; and small areas of salt about the

size of a dining room table were appearing in the business district

in late summer

Shire president and local farmer David Abe remembers it well

"In the early 1990s council organised for a heap of piezometers to

be put down around the town," he says "By early 1996 they wereindicating that water tables were only 1.5 to 2 metres from thesurface in some places

"A few of us recognised the problem and we called a public ing to work out what could be done A committee was formedthat night, but it was hard to know what to do."

meet-Agriculture Western Australia in Northam provided some help but

it needed a longer-term strategy When the Western AustralianGovernment offered to help 13 towns with problems through theSalinity Action Plan from 1996-97, Corrigin made sure it was one

of the first to raise its hand

Understanding how to cope with town site salinity has grown stantially since, but many agree it has been a steep learning curveover the last four years

sub-Trees, offered as the primary tool, achieved little although somewere planted in the first year, David says Airborne geophysicsfly-overs also gave little result

Average Rainfall: 350 mm

Photos: Agriculture Western Australia

Home

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But appreciating that excess water

has to be pumped out and used on

a sufficient scale, is now helping

Corrigin overcome its problems

"Through the Rural Towns

Program, we have installed more

piezometers to monitor water

lev-els," David says "We are very

for-tunate that the water is good

qual-ity and five bores are now

pump-ing non-stop into a 40,000 gallon

(182,000 litre) tank Three more

bores will be connected before

summer is over."

The water cannot be sold by the

council, but is available for

farm-ers to use for stock use and

spray-ing, and for irrigating council and school

ovals Exporting water from the town is the

ideal option and one which no other town in

Western Australia has yet achieved

"A major cost is road works," David Abe says

"Where the watertable is high - within 1.5

metres of the surface - we can't compact the

ground properly and the foundations collapse

This is one of the council's biggest costs, but

one we hope to reduce from now onwards."

For the hotel, weekly cellar pumping had

become a regular part of life But resurrection

of an old bore 40 metres away enabled the

owners to forget pumping - until the casing

collapsed Connecting a new bore is now a

pri-ority, but the effects of other bores have helped

reduce pumping to every six weeks, even

without the closer one

Thirty towns in WA are now participating in

the Rural Towns Program administered by

Agriculture Western Australia, under which

costs are shared equally between local councils

and the program

Program manager Mark Pridham says Corrigin

was one of the lucky towns because of its

unique position of being able to take thesource of the problem - excess groundwater -and turn it into a resource This was possiblebecause of the good quality of the water underthe town and its location away from the flatvalley floors

During 2000 the economic impacts of salinity

on town site infrastructure were assessed Arange of control options which includedpumping groundwater were also evaluated

Recommendations for treatmentnow include a proposal to de-water the town site and reinstatethe water balance much as it wasbefore arrival of the scheme water

in 1961

"When Corrigin was the town ofwindmills, each windmill pumpedabout 2500 to 5000 litres per day,removing about 170,000 litres or

170 cubic metres per day fordrinking, washing and vegetableand fruit tree irrigation," Marksays

"But our analysis shows that oncethe windmills were removed, thelevel of the aquifer below Corriginbegan rising at about 0.3 metres per annum

It was only a matter of time before problemsbegan in the lower parts of the town."

Although the total cost of operating and taining pumping facilities has been estimated

main-at $22,000 per year, the potential savings inpurchased water to the community are about

$38,000 per year at current costs

This is making it comparatively easy forCorrigin to make the decision to invest ingroundwater pumping as its best salinity man-agement option and turn a liability into anasset

• David Abe and Mark Pridham spoke to Georgina Wilson, NDSP Communication Co-ordinator (WA)

Key points

■Excess ground water is beingpumped from beneath a town inthe Western Australian Wheatbeltregion to manage waterloggingand reinstate the water balance

■ Five bores now pump groundwater non-stop into a 182,000 litretank for the community to utilise

CONTACT:

■David Abe, Ph: (08) 9063 2263;

Mark Pridham, Agriculture WesternAustralia Ph: (08) 9368 3919

Left: A water truck

loads up with free

water at the Corrigin

stand pipe - exporting

the problem out of

the town site area and

assisting nearby land

owners

Corrigin Shire president and Rural Towns Programcommittee member David Abe with one of the productionbores reducing water tables in the town

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The Pakenham and District Golf Club looks

a picture The greens and fairways are well covered with grass, the trees are growing well and the golfers are out in force As Course Superintendent Anthony Wright told Victoria's NDSP Communications Co-ordinator (and enthusiastic golfer) Jo Curkpatrick, the course today looks a lot different than it did 10 years ago.

When the Pakenham course was established back in

1985, it was built on a floodplain covered in

Melaleuca ericafolia A lot of these trees were

removed to build the golf course, but without a planfor managing the water, the effects of salinity start-

ed to show up very early on We have tackled theproblem by improving the soil balance to deal withthe high sodium levels in the soil Our approach hasbeen to address the problem, not to apply a 'band-aid'

By getting a good balance in the soil we have beenable to show a big improvement in the cover on thefairways With better soils and good grass growth wehave also been able to utilise effluent water in ourirrigation program and that wouldn't have been pos-sible a few years ago

The inspiration for our approach has been WilliamAlbrecht, an American soil scientist in the 1940s and50s Albrecht had taken soil samples around the

PAKENHAM GOLF COURSE

Reclaiming the greens — naturally

Photos: Jo Curkpatrick

Home

Trang 9

world and determined that there was a

com-mon thread for fertile soils in terms of the

lev-els of calcium and magnesium in the soil

We started with a soil that had pH of 2 with

high levels of sodium and sulfur In earlier

days gypsum was being added but that was

making the problem worse By meeting

Albrecht's balance for calcium and magnesium

and by adding calcium and potassium, the pH

has improved and we have been able to grow

good grass on the fairways and greens

Some of trees on the golf course were suffering

from the high salt levels, so we went back to

planting M.ericafolia and swamp gums

(Eucalyptus ovata) and they are doing much

better than trees from outside the area We

have planted about 4000 trees so far

We use mostly organic fertilisers and haven't

used insecticides or fertilisers for two years I

would like to have the first certified

complete-ly organic golf course in Australia, but so far

we haven't found a way to control weeds such

as paspalum without herbicides

Our main fertiliser is chicken litter from an

organic poultry shed nearby We spread it

annually on the fairways Soil testing is

under-taken once a year on the fairways and

quarter-ly on the greens which allows us to keep a

pretty close watch on fertility levels and tells us

when some intensive treatment is required

It's not that hard to do and the rewards are

there We have saved money on insecticides

and fungicides and put the savings back into

fertilisers It costs about $1000 per fungicide

application and that's a lot of money for a small

club like ours Besides, by not using

insecti-cides we are noticing that the native birds have

begun to return

We still have a drainage problem and the

golfers will tell you it gets pretty wet during

winter But we can't flush or pump out the

excess water because there is no where for it to

go A quote to re-shape and drain one fairway

is around $75,000 and that is out of our reach

You can't beat good drainage, but by tackling

the soil chemistry we can make a difference

We also match our irrigation with evaporation

and tend to err on the side of not enoughwater Kirsten Barker, our local salinity officerfrom the Department of Natural Resources andEnvironment is keeping an eye on water tablelevels She reports regularly on levels in moni-toring bores on the golf course and in the near-

by residential area

We have noticed a fall in the water table, butwith several dry years it is hard to accuratelypin down the reasons What we do know isthat about 2000 hectares of discharge havebeen mapped in the Western Port catchmentand there is sure to be more than what hasalready been mapped

It really hasn't been that difficult or expensiveand the proof is in the pudding We have a bet-ter golf course for our members and in 1999the Cardinia Shire recognised our efforts with

an Environmental Management Award

Key points

■Dryland salinity is evident on thefairways of an 18-hole communitycourse located south-east ofMelbourne

■Average rainfall 790-820mm

■ Salinity problem is beingovercome by improving the soilbalance using organic fertilisers;irrigating with effluent water andplanting salt tolerant grasses(Santa Ana Couch), improving turfconditions significantly

Wright and Kirsten Barker,

salinity officer (DNRE) for

the Port Phillip region, look

over one of the club’s

greens

Right: The state of the

course before (top) and

after (below) the club’s

extensive restoration work

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Athird of our property

had the potential to go

saline and now after

more than five years of

pump-ing, we have turned the corner

and are progressively

reclaim-ing about 200 hectares.

Here at Kalannie, my father and

uncle saw the first signs of salinity

in the 1960s after land clearing

began in 1925 In the early 1960s they were

suggesting that pumping with windmills would

be necessary But it's only in the last five or six

years that we've really got into pumping

seri-ously, although we've tried other treatments

We must use the appropriate mix of land vation weapons in the war against salt

reno-Drainage is essential in our valley floors wherethere is a huge volume of groundwater that ismore saline than sea water

Oil mallees and lucerne areused in the valley slopes toextract perched groundwater,but in the valley floors, pump-ing is the engineering solutionused to extract the more salinewater

In 1994 I was talking toRamsis Salama from CSIROabout their salinity research,and he recommended I do acost-benefit analysis as a starting point Wetried to get funding from many places, butalthough we were short-listed a few times, wewere never successful

Groundwater pumping

is proving its worth

Case study: Robert and Helen Nixon and family

Location: Kalannie, WA Area: 7000 ha

Average Rainfall: 300 mm Enterprise: grain and sheep

Home

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We gained assistance from Colin Walker

at Murdoch University and established a

self-funded research and development

project Farmers like us with salinity

problems on land in the lower valley

floors are very frustrated that there is no

public money for engineering solutions

This is usually our prime land - the

champagne country

How much of my property was affected

is hard to tell Salt on valley floors is

insidious Only a small percentage of

the land is totally lost, but much larger

areas lose fertility and capacity for

pro-duction as the water tables rise For the

research project we installed the first

extraction and monitoring bores in

1995 and began pumping once

approvals had been granted

About a third of our time and

consider-able investment has occurred over five

years Altogether we installed 52

groundwater monitoring bores, three

water extraction bores and more than 10 km of

water lines

We had a long-term plan to acquire land with

salt lakes for disposal of the water Saline water

is pumped 5 km to these lakes, some of which

have been bunded (given retaining banks) toprovide evaporation and crystalliser ponds forsalt production

We planned to harvest salt, but this has beenvery limited due to unexpected rain in the lasttwo summers We had four inches of rain dur-ing January making it impossible over thisperiod In February you would normallyexpect the place to look completely brown, but

in fact it is green

The three production bores yield 450,000 litres

a day all year round The main costs now areelectricity and maintenance on the system as

we continue pumping People in this area arevery conscious of Landcare My neighboursand the LCDC have been very helpful and sup-portive Richard George and others fromAgriculture Western Australia have been asounding board for ideas, and various groupshave visited the project

The highlight for us has been the effects nearthe homestead You can see it in the native

vegetation 500 to 800 metres from the first duction bore As the salt encroached, thecanopy of the trees became stunted with lots ofdead wood Now the canopies are rising pro-gressively through the dead wood branches.When you start drainage work like this on aproblem that has developed over 75 years,changes won't happen overnight First, youhave to stop it getting any worse and then begin

pro-to peg it back

Reversing the effects of half a century is going

to take more than a couple of years, but wehave certainly made a start

• Robert Nixon spoke with Georgina Wilson, NDSP Communication Co-ordinator (WA)

CONTACT:

■Georgina Wilson, Agriculture Western Australia

Ph: (08) 9368 3889 Fax: (08) 9474 2018E-mail: gwilson@agric.wa.gov.au

Left: Colin Walker

■Cost-benefit analysis has

ensured economics of Landcare

activity

■Land reclaimed, increased

production and saleable salt

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Case study: Malcolm Schaefer

Location: Kangaroo Island, South Australia

Area: 1200 ha with a further 400 ha leased

Average Rainfall: 550 mm

Enterprises: Wool, prime lambs, oats and vetch

Kangaroo Island, which is hardly surprising since we are only a few kilometres from the Southern Ocean

Clearing commenced on our property in 1904 andcontinued up until about 1950, even though someparts of the land were obviously salt affected Iremember my father saying that the land almostasked to be cleared because the main vegetation typewas tea-tree which was very easy to clear

I realised that the salinity problem was getting matically worse in 1984 after a very wet year Thatwas when I started a small program of planting salt-tolerant grasses and trees on affected areas In thosedays, with not much experience to fall back on, ittook several years to thicken up the grasses and most

dra-of the trees (which cost $2 each) were eaten by garoos Another wet year in 1992 saw the salt spreadeven further, many more old trees died and I couldsee that the problem had now become urgent About one third of my land is salt affected, anotherthird is non-wetting sand and the remainder is goodcropping land Because I am at the landlocked bot-tom of a large groundwater system, there is not agreat deal I can do about lowering the watertable Ican probably protect assets like dams with targetedlocal revegetation, but I also need to protect the landthat is not salt-affected and live productively with theland that is

kan-A major breakthrough occurred when I attended alocal Landcare conference in 1994 and saw theopportunities for direct seeding of native vegetation.Not only can large areas be sown quickly, the 'roosdon't seem to find this as attractive as the tubestock

As my farm is bounded on three sides by native etation I have an abundant seed source as well as anabundance of kangaroos

veg-Preparation for direct seeding consists of spraying

700 mm wide strips with glyphosate in June and thenagain about five weeks later to kill the second germi-nation of weeds Seeding is done in August, but ger-mination seems to be staggered over the next 12months depending on the weather conditions, so itdoes not really matter much if we have a dry springand there is not much to show for awhile

Making the most

of saline ground

Serradela on a non-wetting sandy rise treated with clay

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