Preliminary experiment to control ants as a transferring factor of millibug (Pseudococcus citriculus, Planococcus citri) in persimmon.
In recent years, an increase in the damage from millibugs in persimmon fruits was observed. The millibug settles under the sepal and the connection between fruit and leaves. It sucks the fruits and the honeydew causes black knots. Ants are the main transferring factor of the millibugs and they protect them against predators and parasites. Dorsan [chlorpyrifos] 5% and diazinon 4% applied around the trunk gave excellent results against ants. Marshal [carbosulfan] 2% was not as effective. All the treatments greatly reduced the population of millibugs.