Queensland Fruit Fly September alert – put out Ceratrap now

As early as possible in September, hang Ceratrap lures in the canopy of trees such as lemons. This is in addition to Wild May which should have been in place during August and attracts overwintering males only. Word from the Yarra Valley QFF project is that this is an early season for QFF so get cracking to protect your fruit and veg.

Ceratrap is a protein bait that attracts both males and females. Mating will begin the moment it is 16°C or above at sunset. You will not see the QFF because they are so small.

Pour 500ml of Ceratrap lure into your lure bottle and this will last all season. Place in trees on the north side 1.5 – 2m from the ground. Ideally, place one in every second fruit tree. Use any type of lure bottle that has a yellow top.

Net any fruit tree you can, tying the net securely at the base or weighing the net down around the base with something heavy (bricks, timber, soil, mulch). Use insect exclusion netting only (2mm x 2mm weave).

Alternatively, spray trees after pollination with kaolin clay, sold as Overhaul. This will also deter citrus gall wasp. Spray all fruit and branches until they drip and replenish as needed.

Our strategy is succeeding so follow the Sustainable Macleod monthly tips to reach zero infestation.

Where to purchase supplies:

• Wild May, Ceratrap and off-the-roll insect exclusion netting (6m wide) can be purchased at cost price from Sustainable Macleod.
• Kaolin clay and off-the-roll insect exclusion netting can be purchased at Bulleen Art and Garden
• Lure bottles can be purchased at most hardware stores and nurseries including Bunnings (they must have yellow lids to attract QFF).

Written by Robin Gale-Baker