Korean fir pestscause the needles to turn yellow and fall, which makes the fir look unsightly and lose its ornamental value. Most often,a spider or a spider mite appears on a firHow to recognize these Korean fir pests and what to do when we notice them? See what preparations to use forKorean fir pest controland how to prevent these pests in the future!
The effects of Korean fir pests feeding
The most common pests of Korean fir are: fir bite and pine spider mite. These pests feed on fir, causing the needles to turn yellow and fallIn the fight against them, it is very important to perform a prophylactic spraying with oil preparations Promanal 60 EC or Emulpar 940 EC in the early spring. These measures cover the wintering stages of the pests with a coating that makes it difficult for insects to breathe. As a consequenceKorean fir pests die
Firgrass
A fir-tree aphid is an aphidthat feeds on the underside of the needles of various fir species, including Korean iodine. This aphid sucks the contents of the plant's cells, and as a result, widespread yellow spots appear on the needles. With timefir needles droop, shoots turn brown and die
The larvae of the aphids overwinter on the underside of the needles in two rows. In May, they start foraging resuming their activity. They lay eggs, from which the larvae hatch two weeks later. In July, they stop feeding and settle on the underside of the leaves in preparation for wintering.The remaining larvae transform into winged forms and fly over to other fir specimens.Aphidicides, such as Decis Ogród 015 EW, can be used during the growing season to combat fir bite . Remember to perform the above-mentioned preventive spraying with oil agents in the early spring of the next year.
Red spider mite on fir
Another,dangerous pest of the Korean fir is the pine spider miteFighting it is difficult, but appropriate preventive measures allow the plant to be protected against pest invasion. The spider mite eggs hibernate in the bark of Korean fir shoots, and at the end of April, larvae hatch from them, which reach the needles and feed in them until they reach their adult form. In the summer, , we see a spider web on the Korean fir, which is the hallmark of the spider miteand, at the same time, a protective barrier through which plant protection products can hardly get through.
The spider mite on spruce. It looks similar on a fir tree
As in the case of gorges, it is important to spray Korean fir pestsin early springwith oil preparations. These preparations will destroy wintering spider mite eggs and protect our Korean fir from pest invasion in the summer.
However, if we did not spray in the early spring, it is worth taking a close look at your Korean fir in May. You should reach for a white sheet of paper and carry out a quick test, which consists in shaking the branches of the plant over the sheet and observing any pests that fall on it. If we see small insects, it means thatour fir has a spider miteand we should spray it with Karate Zeon 050 SC or Ortus 05 SC.
Agents for combating pests on fir treeslisted in the articlecan be ordered in our e-shop. We guarantee high quality of preparations, attractive prices and fast shipping. To view the offer, press the button below.
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MSc Eng. Joanna Białowąs
