Argus (Melbourne, Vic. : 1848 - 1957), Saturday 8 November 1924, page 25


BLACK CHERRY APHIS.

-?- ' elia

Minor Outbreaks Reported. the

Reports have been received by the Agricultural department of the appearance on cherry trees in various parts of the State of an insect parasite which has been identified as the black cherry aphis. The aphis, which resembles a very small black fly, breeds from eggs deposited in the trees. Experiments are being made at Ringwood with a view to destroying the pest. The acting Government entomologist (Mr. G. T. Levick) said yesterday that the best method of preventing the growth of the aphis had been found to be the spraying of the trees with red oil before the leaves appeared. Nicotine sulphate applied to the eggs was also effective, though the red oil was more favoured. The aphis had

not so far spread to any considerable extent, and only one tree had been affected

in some areas..