Home' Grower : October 2010 Contents The South Australian Grower -- October 2010
Industry gets the
good oil on citrus
ANEW food-grade post-har vest oil
for citrus has been fast-tracked into
packing sheds across Australia fol-
lowing speedy approval by the Australian
Pesticides and Veterinary Medicines
South Australian Citrus Industry
Development Board chairman Peter
Walker said the new oil provided
Australia's citrus export industry with
"This is great news for Australia's citrus
growers," Mr Walker said. "Our export
markets are becoming increasingly sensi-
tive to quarantine threats but this new
post-har vest oil will help ensure we retain
these markets, and secure new ones."
The food-grade oil -- to be marketed as
'Prospect' -- was evaluated by the South
Australian Research and Development
Institute citr us post-har vest team led by
Dr Peter Taverner with funding support
provided by the SACIDB. It is based on a
similar formulation to a previous post-har-
vest oil of the same name developed by Dr
Taverner's team in conjunction with the
It has been approved for use to control
light brown apple moth but Mr Walker
said the SARDI team had been working to
confirm its effectiveness against a broad
range of surface insects of quarantine con-
cern including mealy bug, which has been
disruptive to South Australia's biggest
export market, Japan.
"It's been a team effort to develop this oil
and help protect citrus exports to SA worth
$70 million," Mr Walker said. "It can be
used at lower rates and is easier to handle,
and may well be available to the industry
for a considerable time as the basic compo-
nents are relatively easy to come by.
"Australian citrus has a world-class repu-
tation for being free of insect pests, and
export markets are becoming increasingly
strict with their quarantine standards. It's
vital that we retain these markets by fos-
tering this sort of innovation and research,
because if we lose the markets they're
extraordinarily difficult to get back.
"The alternative to this new oil would be
the use of expensive field insecticides at a
great cost to citrus growers. These would
not be as effective as the post-har vest oil in
any case, and would also lead to addition-
al problems such as increasing insecticide
resistance and secondary pests.
"SACIDB has not only sponsored the
development of this oil, but has worked
closely with the APVMA to ensure speedy
approval of its use in packing sheds. It's
been a fantastic result for the whole citrus
Additional financial contributors to the
post-har vest oil work were Murray Valley
Citrus Board, Riverina Citrus, Riversun
Exports, Citrus Australia and Horticulture
Taking the good with the bad
GENERATING large amounts of compost requires
substantial green waste.
Monduran Citrus has secured such quantities
from the Bundaberg Regional Council's waste
"It is a good source. It's taking a problem away
from the council I believe," Monduran Citrus
manager, Mike Harrison said.
But there is a trade off.
As members of the Reef Rescue Farm Tour
took a closer look at some of the compost, some
asked about the extra rubbish within the piles.
Non-organic items such as a shoe, a golf ball,
a tennis ball, plastic, and even a rubber duck
bath toy, were present on the piles.
Mr Harrison said that at the moment, it was an
unavoidable part of getting the material.
"There is obviously going to be a little bit of
that there," he said.
While some of it is picked up, not everything
can be filtered out.
At present all green waste material is brought
onto the property. Mr Harrison said that although
it sounds strange, it's not economically viable to
use its own waste.
"It's too expensive for us to harvest our own
prunings. I'd love to do it, but it is very, very cost
prohibitive," he said.
Monduran Citrus is also conducting a compost
trial using hay.
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