Pest
Red plum maggot
| Überblick | |
|---|---|
| Latin name | Grapholita funebrana |
| Host Plants | Plum and damson, more rarely apricot and other fruit trees of the genus Prunus (e.g. blackthorn) |
| Appearance | The front wings of the moth are colored in grey and brown and have a wingspan of about 14 mm. The larva shows a reddish coloration. |
| Time of Infestation |
1st generation: May – June 2nd generation: July – August |
The larvae of the red plum maggot bore into the developing fruit and feed in the area of the stone. A clear rubber drop is formed at the drill hole and the feeding passage of the larvae is contaminated with excrement. Infested fruits turn bluish, ripen prematurely and fall off early. The second generation of caterpillars usually cause more damage.
The nocturnal moths of the first generation of red plum maggot fly from May / June and deposit their eggs on the young fruit about two to three weeks after flowering. The hatched larvae bore into the fruits, which then fall off prematurely. The adult caterpillars leave the fruits to pupate on the trunk of the tree.
The females of the second generation deposit their eggs on the still unripe fruits from July. The adult caterpillars leave the fruit after feeding to spend the winter under the bark of the tree or at the base of the trunk.
Monitoring the development of the red plum maggot withTRIPHERON®traps
The beginning of the flight activity of the moths can be detected by pheromone traps. Pheromone traps intercept the male moths and can thus partially reduce the fertilization of the females and thus the deposit of eggs. They should be hung up in the outer crown of the trees from the end of April. At the beginning of the flight activity, the beginning of larval hatching and thus the necessary treatment time can be calculated.