The Olive Lace Bug has impacted Western Australia and is threatening to spread further into the country.
Two major Western Australian olive farmers have been forced to cull close to 7,000 adult olive trees that have been infested by the deadly Olive Lace Bug (Froggattia Olivinia) in an outbreak that has been officially declared endemic to the area.
The Olive Lace Bug (member of the Hemiptera family of sap sucking bugs) is native to Eastern Australia and its spread is particularly concerning for olive growers located in the West of Australia and New South Wales as it can dramatically impact an olive tree’s current and future yield, with the damage lasting for up to two years in some instances.
Treating the problem can prove challenging to farmers as the Olive Lace Bug lives, eats and breeds underneath the leaf, which making it difficult to detect unless each tree is closely monitored.
The population of the Olive Lace Bug will multiply rapidly if left untreated, making a multi-stage treatment protocol necessary to ensure the bugs have been completely eradicated.
There is no specific prescribed treatment for eliminating the pest from infected groves and experts recommend using insecticidal soap sprays such as pyrethrum. This treatment option is not favored by farmers as it runs the risk of damaging nearby bees and beneficial insects as well as compromising the integrity of the soil.
The harm to beneficial insects can lead to a population increase of other pests that were previously kept in check. There have also been reported instances of the Olive Lace Bug developing immunity to commonly used chemical treatments.
The bug has not found its way outside of Australia’s borders, but there is limited research available on an international level on controlling its population. Farmers are concerned that the bug could spread even further as it has been known to attach itself to machinery and even seasonal workers traveling from farm to farm, making its rapid spread a concern among stakeholders.
Only time will tell of the measures put in place to eliminate the infestation were successful. Experts in pest control say farmers will need to wait until the following year when new seasonal growth commences, to see if the tell-tale yellow, mottled leaves are present.
The Australian olive oil industry has experienced explosive growth over the past few years, with annual production increasing by an average of almost fifty percent between 2010 and 2015, yet the country remains a relatively small player in the international market, accounting for less than 0.5 percent of the world’s total olive oil production.
More articles on: Australia, olive farming, pesticides
Oct. 12, 2023
Researchers Identify Three Olive Varieties Resistant to Pervasive Fungus
Three cross breeds of Frantoio, Koroneiki and Arbosana olives resisted Verticillium dahlia in a controlled environment.
Oct. 24, 2023
Olive Grove Bacteria May Hold Key to Combating Xylella
Certain microorganisms provide biological advantages like a secondary immune system, researchers found.
Dec. 15, 2023
Meet the Start-Ups in Central Italy Reviving Abandoned Olive Groves
The startup Ager Oliva in Tuscany and the association Le Olivastre in Umbria are committed to restoring abandoned olive groves through adoption plans for citizens and companies.
Jan. 3, 2024
Tuscany Announces Funds to Prevent Olive Grove Abandonment
The measures are meant to encourage growers to take care of abandoned olive trees in difficult terrains and maintain them to prevent wildfire and pest development
Jun. 27, 2023
New Zealand Producer Uses Brix Levels to Determine Ideal Harvest Moment
Unlike with grapes or other fruit, Ross Vintiner harvests olives when the sugar level falls, indicating that oil is accumulating and polyphenol content remains high.
Dec. 19, 2023
Brazil’s Al-Zait Rises to International Acclaim
In only two seasons, southern Brazilian producer Al-Zait has gone from a newcomer to olive oil production to an award-winner on the biggest stage.
Feb. 23, 2024
After Bumper Harvests, a Sharply Lower Yield in Argentina
An ‘off-year’ harvest, lack of chill hours, and extreme weather events are expected to reduce the yield by as much as 40 percent.
Jan. 29, 2024
Verde Louro Among Brazil's New Generation of Outstanding Producers
In Rio Grande do Sul, the young producer overcame climate extremes to win four awards at the World Olive Oil Competition.