Chemicals (insecticides) usually do not show a 100% result when exposed to a mealybug. Their lack of effectiveness is due to several reasons:
- Mealybugs coated with wax repel chemicals and the pest does not suffer; only young larvae are destroyed with almost no wax;
- A mealybug is simultaneously p resent on a plant in different stages - eggs, larvae and adults; chemicals often kill a pest in only one or several stages of development;
- Mealybug has the ability to get used to the effects of the chemicals. This means that repeated plant processing with the same active ingredient, and in the same concentration, may not have any effect on the pest at all.
- The mealybug is hidden in the secluded places of the plant: in the soil, in the roots, in the inventory and so on - for this reason the chemicals may not act with the pest.
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Timecode:
0:00 - Reasons of the lack of insecticides effectiveness
1:15 - Imidacloprid and Acetamiprid
1:26 - Biological preparations
1:36 - If you have a few mealybugs - use isopropyl alcohol
1:54 - If there are a lot of mealybugs - test the plant for phytotoxicity
2:22 - Flaws in the processing with alcohol
2:58 - New hormonal chemicals - Bifenthrin and Kinoprene
3:11 - Our own experience in protecting the collection from the mealybug
4:10 - Cacti and other succulents
6:52 - Plants with hard leaves
7:30 - Sago palm trees
8:00 - Palm trees
8:42 - Phalaenopsis
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Mealybug:
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