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The River News, Wednesday, September 17, 2014 - 9
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Contact Geoff Flight
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CITRUS UPDATE – SEPTEMBER
ALERT ALL RIVERLAND
RESIDENTS AND GROWERS:
Do you have a backyard citrus tree or orchard
infested with gall wasp?
In view of the increasing threat this pest has
become in the Riverland region, backyard trees
infested with citrus gall wasp (CGW) must be
controlled and possibly eradicated.
For easy identification of the pest, visit www.
Citrus-gall-wasp.pdf or phone Sam Rogers on
0477 110 933.
Residents and growers with backyard citrus
trees or orchards infested with CGW are urged to
implement the following plan, as now is the time
to assess control options and plan action required
prior to pest emergence:
Waikerie growers have the only chance
right now to eradicate CGW. Seek helpers and
immediately implement a search and destroy
program of all galls. We are nearly out of time.
Predicted emergence is from October 10.
Each patch should be monitored and controlled
on its own merit.
A small exit hole will appear once emergence
commences. Apply the first of three 0.5 per cent
summer oil applications at high volumes. Good
coverage is critical.
Apply the second and third summer oil
application seven to 10 days consecutively after
the first application.
Summer oil acts as a deterrent for egg laying.
Applied alone, summer oil is considered IMP
friendly. However, an insecticide can be included
in the second oil application for a reduction of
CGW adults. Repeated use of the chemical is not
encouraged, but may need careful consideration
to effectively control the pest.
Residents can purchase bifenthrin insecticide
from their local ag store and treat trees according
to the label rate.
Detailed CGW information has been circulated
to growers via email. Please contact Sam Rogers
if you are yet to receive it.
A meeting about CGW will be held in Waikerie
as soon as possible (date to be advised). Please
contact Sam Rogers IDO if you are a Waikerie
district grower with any amount of CGW present.
Not all frost affected trees show the severity
of their injuries after a frost event.
Revitalisation in suspected frost-affected
blocks should be delayed until fruit set.
This will allow time for the full extent of injuries
or damage to manifest itself.
It is also important to identify where fruit has
actually set before pruning.
If there has been excessive leaf drop but the
stems are unaffected, it’s possible the tree may
force new buds with an abundance of flowers
(white blossom) that could result in very low to
no fruit set.
If minimal leaf drop occurred, it is likely the
tree will flower and crop as normal. This seems
to be the case this season.
However, it is possible the tree may grow and
flower normally for several weeks before showing
sudden stress when exposed to high, fluctuating
In such cases, reduce the crop load by pruning
back the canopy to lessen transpiration demands
on the tree.
Trees should be monitored for evidence
of micro-nutrient deficiencies such as zinc,
manganese, copper, and iron.
Balance nutrition and irrigation according to
tree health. Excessive inputs are unnecessary, but
foliar sprays may be required prior to blossom to
give the tree more reserves.
Inflorescence is a cluster of flowers.
Typical flowering consist of 35 per cent leaf
less inflorescence (few flowers but no leaves), 50
per cent leafy inflorescence (cluster of flowers
and several leaves around the cluster), 5 per cent
solitary terminal inflorescence (single flower) and
10 per cent vegetative shoots.
Strong leafy inflorescence grow larger sound
fruit due to being few better. The number of
flowers per tree has more influence on final fruit
size than actual fruit set, but not on yields.
This is due to the energy the tree invests
during flowering and early fruit development
(cell division). Usually 10-40 per cent of flowers
materialise into fruit. Preliminary assessments
indicate a heavier flowering season but expected
to be a white blossom.
Growers are urged to monitor the blossom
carefully to determine what cultural practices are
required to maximise fruit set, size and quality
Apply before fruit set. Later applications
will encourage flush that will compete with the
fruitlets and could delay fruit colour development.
Foliar sprays – September
pH 5.0 to 5.5
Urea (0.4% Bieuret)
Plus: K phosphonates (400g/100L
Litres per ha
To avoid excessive fruit drop over summer,
especially in orchards with light flowering, ensure
there is no irrigation stress during flowering and
SPRAY UNIT CALIBRATION
Good spray penetration and coverage is
Spray unit speeds must coincide with the
available air volume.
Now is the time to calibrate and maintain
Ensure each nozzle flow is measured as part
of the calibration procedure.
The Agricultural Chemical Users Manual is
very informative and lists calibration steps to
follow. It is available online (www.daff.qld.gov.
Citrus Australia’s website: This site is open
to all citrus industry stakeholders. Apply for log on
access via email (email@example.com).
Citrus Australia - SA Regional Wrap
WANT TO VISIT FRANCE?
The great majority of Riverland
growers are members of Wine
Grape Growers Australia (WGGA),
the federal organisation.
WGGA invites applications from
growers to attend the Vinitech-
Sifel international trade show in
Bordeaux, France, from December
2-4 this year, as VIP guests of the
A group of 8-10 will make the
journey, and anyone interested
should hurry. Applications have just
opened and will close on September
This opportunity has been
generously negotiated through
Promosalons, the Australian
agent promoting this event (www.
Vinitech-Sifel is an international
exhibition of equipment and
innovations for the wine industry
and the fruit and vegetable sector.
There are more than 850
exhibitors (representing 1200
brands, including 30 per cent
international) over an exhibition
area of 65,000sq m.
Of interest to grapegrowers, on
show will be: tractors; tillage and
maintenance equipment; nursery
and planting equipment; spraying
equipment; crop protection products;
vine pruning and maintenance
equipment; harvesting equipment
and pesticides and fertilisers
For more information on Vinitech-
Sifel, visit: www.vinitech.fr/en
Further information can be
found on the WGGA website (wgga.
com.au) or by contacting Sandy
Hathaway on 0418 8436 023.
ANGOVE’S INGLE AT
THE CUTTING EDGE
The Riverland is justifiably proud
of its original winemaking family.
Angove Family Winemakers
managing director John Angove
says the appointment of Tony Ingle
more than 10 years ago was a
His nomination for Gourmet
Traveller Winemaker of the Year
is just the latest recognition of
his outstanding talents and great
contribution to the Angove family
business and the wine industry.
In more than a decade at the
helm, Mr Ingle has steadily and
surely guided Angoves away from
bulk, industrial-scale production
to a more sustainable approach
in the vineyard and increasingly
Mr Ingle’s arrival at Angove
Family Winemakers in 2003 has
been pivotal in the rebirth of the
venerable company as a quality
He has greatly improved its
wines and driven the focus away
from bulk wine to smaller-lot, high-
quality table wines.
Mr Ingle has inspired the organic
push, the creation of a boutique
winery within the large Renmark
winery and the sourcing of grapes
from other regions.
He was deeply involved in the
company’s move to expand into
McLaren Vale and buy the Warboys
Vineyard in 2008, resulting in
some outstanding additions to the
This vineyard was immediately
converted to biodynamic
management, following the trend
of the company towards sustainable
viticulture, which began with the
ongoing conversion of its large
Riverland vineyard Nanya to organic
Nanya currently has 40ha of
vines under organic management
and another 30 in conversion.
The Gourmet Traveller article is
in the August/September edition
and is well worth a read.
RETURN TO WORK
Deputy Premier and Minister for
Industrial Relations John Rau has
written to Riverland Wine to advise
of a new Return to Work Scheme for
After widespread consultation
with employer groups and worker
representatives, the new scheme
will balance the need for significant
support and services to workers who
have been injured with the need
for the scheme to be affordable for
“The new scheme will deliver
lower premiums, creating a more
competitive environment for South
Australian businesses,” Mr Rau said.
“If delivered as envisaged, it
will reduce the average premium
for between 1.5 and 2 per cent of
wages, much lower than the current
2.5 per cent.”
Mr Rau also expects the new
scheme to deliver at least $180
million in savings for employers
WorkCoverSA will be
replaced with a new corporation,
The new corporation will be
expected and required to meet high
quality service standards focused on
We will expand on WorkCoverSA’s
current early intervention program,
whichthat will see mobile case
managers providing a more
personalised service to workers
This will include face-to-face
contact with people who are away
from work for more than two weeks
to provide tailored services to
achieve a sustainable return to
Workers who have been injured
can receive up to two years of
income support and up to three
years of recovery and return to work
Workers assessed by an
accredited medical practitioner
to have a serious injury under the
legislation (over 30 per cent whole
person impairment) will receive
income support to retirement age
and lifetime care and support.
More information on the Bill
and the proposed scheme can be
downloaded online (www.yoursay.
The Riverland Vine Improvement
Committee (RVIC) has the following
grafted vines for planting available
for sale: cabernet sauvignon on
paulsen; cabernet sauvignon on
ramsey; gordo on paulsen; merlot
on richter; merlot on paulsen; merlot
on ruggeri; riesling on paulsen;
vermentino on paulsen.
Phone RVIC on 8583 5366 if you
would like to place an order.
MEMBER for Chaffey Tim Whetstone at the Royal
Adelaide Show citrus stand with Citrus Australia SA
Region deputy chair Penny Smith.
RIVERLAND citrus and the entire region
enjoyed precious exposure at this year’s Royal
The Citrus Australia stand incorporated a
Destination Riverland display within its allotted
space in the popular Goyder Pavillion.
Big crowds and positive responses provided a
boost for both the industry and region, according
to Citrus Australia SA Region chair Con Poulos.
“We always get great interaction and feedback
from the Show,” he said.
The 2014 Show marked the citrus industry’s 32nd
year of involvement with the iconic Adelaide event,
with attendences expected to have topped 500,000.
Volunteers helping to run the citrus stand
included Senator for South Australia Anne Ruston,
Minister for Agriculture Leon Bignell and Member
for Barker Tony Pasin.
The citrus display was part of the Yellow Brick
Road, an annual Show initiative that sees thousands
of people follow a trail across all corners of the
A slice of
HELP is at hand
for farmers learning
to use new ‘apps’
to boost their farm
Resources SA Murray-
Darling Basin (SAMDB)
program aims to help
and use the latest
It will also create
new apps and programs
specifically targeted to
SAMDB project officer
Mark May said while
plenty of information
and technology was
to their uptake were
ability, time and cost.
Phone Mr May at
the Natural Resources
Centre on 8580 1800 for
Growers to get hi-tech
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