Box fire - photo of the pest and expert advice on how to get rid
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HOW TO SAVE SAMSIT FROM FIRE - DESCRIPTION AND FIGHT
Boxwood has always been famous for its unpretentiousness in growing, resistance to pest damage and the defeat of pathogens. But in recent years, the situation has changed dramatically, since we have a new aggressive and very “gluttonous” pest for our places - box fire.
WHERE DOES THIS FIRE HAVE BEEN COLLECTED
Boxwood fireworm is a harmful insect belonging to the family of herbal fireworms. The homeland of this pest is the countries of East Asia - Japan, China, Taiwan, Korea, India. However, since 2006, the pest is found in Europe. For the first time, boxwood fire was discovered in Germany, but then it began to spread rapidly throughout Europe and was listed as a particularly dangerous pest.
Today, this species is found in countries such as Germany, Hungary, Romania, Turkey, Switzerland, the Netherlands, France, Russia, Georgia, Ukraine, Slovakia, and Belgium. It has become an environmental problem, especially for boxwood plantings, since it can completely destroy its planting in one season. To us, as well as to other countries, the boxwood miter was brought with the planting material of the box.
Not a box
The caterpillars of the moth feed mainly on boxwood, but in the absence of food supply, besides the boxwood, they can also damage Colchian larch, laurel cherry trees, maple trees, ash trees, Japanese bokha, and in East Asia also feed and harm on euonymus (Japanese and winged) and holly purple.
The box fire attack inflicts tremendous damage on the boxwood bushes: as a result of the settlement of the bushes by the pest, the plants begin to dry out rapidly, lose their decorative effect and even die.
Gnawing a significant amount of leaf cover, the pest destroys the integrity of the crown, which leads to disruption of plant metabolism and a serious failure in photosynthesis. This adversely affects other cultures growing on the same territory as boxwood. The size of the insect population, as well as the damage it causes, depends on the food supply, environmental conditions, etc.
In a matter of days, the ognevka can turn a luxurious bush into “scum”
BUTTERFLY LIGHT - DESCRIPTION
The adult butterfly of the boxwood moth is rather large with a wingspan of up to 45 mm. The wings are wide, rounded, consisting of a set of longitudinal narrow segments like a fan. The wings are light blue, with brown edging on the edge, the bottom is framed by a fringe of short fine hairs. In a restful state, the wings are folded with a house. The imago lays eggs (about 1 mm in diameter) on fresh green leaves on the back side.
Caterpillars are born yellowish-green. Length of young larva-1-2 mm. The tin is big and black.
The larva develops during 3-4 GZh weeks, for which it increases in size to 3,5-4,0, see. As they mature, the color of the larva changes to darker, and black and white lines form on the sides. On 5, each side has one thick black line and several thin whites. Also on the body of the caterpillar appear dark convex points.
Reference by topic: Recipes for solutions for pest control - folk and proven (Memo)
POPPED CREATURES
Caterpillars feed on boxwood leaves. In case of their lack, the pest passes to the foliage of other plants or eats even the bark of the boxwood tree.
The moth caterpillars are very voracious - in 4 hours one individual eats a sheet of boxwood of medium size, 20 individuals in 2 hours process a 3-liter container densely filled with boxwood leaves. After 3-4 weeks, the caterpillars enter the pupal stage. Pupa is light green, in a loose cobweb cocoon. The length of the pupa is 2,5-3 cm. After 10-15 days, second-generation butterflies fly out of the pupae.
In our conditions, the pest can give three generations. With especially favorable climatic conditions identical to those of the natural habitat, the 4 generation is also possible, which is typical for the western regions of Ukraine.
For wintering, the fire pit prepares its place in the form of a cocoon, fixed in a thick web between the leaves of the boxwood.
The main signs by which it is possible to determine the population of boxwood with a fire mill:
- • the very first signs - whitening of leaves;
- • leaves and shoots are densely covered with cobwebs, which are littered with caterpillar excrement and black head shells;
- • healthy bushes in just 2-3 of the month turn into dry, rotten branches;
- • a large number of dark green and yellowish-green caterpillars covered with fine hairs inhabit the branches and foliage;
- • the ground is littered with excrement, a layer of green stubs that emit an unpleasant peculiar smell.
HOW TO SAVE THE SAMSHIT FROM THE FIRE
The fight against this pest is seriously hampered for several reasons. Firstly, in our country there are very favorable conditions for the development and reproduction of the pest. Secondly, the list of insecticides and agrochemicals permitted for use does not contain insecticides to combat the inflammation.
Therefore, in order to successfully fight boxwood moth, it is necessary to timely identify and identify the pest.
The mechanical method consists in collecting caterpillars and eggs, followed by burning. To reduce the population of boxwood moth, it is necessary to carefully trim the plant.
It is important to adjust the feeding mode of boxwood. During the period of harmfulness, exclude nitrogen fertilizers by performing root dressing with potassium sulfate (20 g per 10 l), 1-2 multiple of foliar dressing with 15 Master: 5: 30: Master or 20: 20: 20 Master.
Of the biological preparations against fire, Actofit is effective at the rate of 8-10 ml per 1 liter of working solution and microbiological preparations containing spore bacteria of the genus Bacillus thuringiensis of various strains - Lepidocide-BTU (60 ml / 4 L of water) and Bitoxibacillin - BTU (80-100 ml / 4 l of water), but only against caterpillars of younger ages. Biological treatments against older caterpillars are not effective.
Conducting the processing of drugs on the sheet, it should be remembered that the protective effect of drugs lasts 7-10 days, and the development cycle of the insect is about 40 days. Therefore, it is necessary to conduct 2-3 processing in a row with an interval of no more than 5-7 days.
When spraying plants, carefully treat the entire leaf surface, for better distribution of the working solution in the plant, use adhesive.
SAMSHITE FIRE - ADVICE OF SPECIALISTS AND METHODS OF FIGHT
New pest - boxwood moth
We talk about various pests in the garden and learn to protect plants from aphids, slugs, nematodes, bronzes, lily bugs ... But boxworm is a pest that we learned about only a few years ago, and it is also very dangerous. According to Natalya Nikolaevna THREE KOZ, Ph.D. (Biology), senior researcher at the Nikitsky Botanical Garden (Yalta), the firepipe can destroy not only whole boxwood alleys, but also seriously damage neighboring plants.
Who is she and where?
Presumably, the pest was introduced to European countries from China with planting material and multiplied very quickly. Homeland ognevki - China, Japan, Korea and India. In our country, it was first discovered in 2012 on the planting material of boxwood evergreen, brought from European nurseries. In Crimea, it was revealed on the boxwood evergreen in June 2015.
An adult butterfly is an insect of a sufficiently large size with light blue, with a brown fringing, wide rounded wings. Below they are framed by short thin hairs in the form of a fringe. In a calm state, the wings are folded house.
What is her danger?
Boxwood fire almost destroys the slowly growing plant, since its leaves are the main source of food for the insect. In addition, the caterpillar of the pest "introduces" an inhibitor into the leaf tissue, inhibiting the development of sleeping kidneys. This is the reason that with the appearance of the insect boxwood begins to rapidly dry out and even die. The “stranger” harms not only individual plants, but also curbs, which quickly dry out, becoming brown in color.
SAMSHITNY FIRE ATTACKS THE LAVRESHEVA, FIELD MAPLE, ASH AND JAPANESE MUSHMULA, KOLHIDSKAYA LITTLE, KOLYUIDA LITTLE, STONE OAK.
Signs of the appearance of boxwood moth
- The presence on the leaves of a dark green caterpillar with black stripes on the sides.
- Fast drying of plants.
- Leaves and shoots are entangled in loose cobwebs.
The presence on the hanging web, as well as on the leaves of numerous skins of larvae and excrement of caterpillars, as a result of which the bushes lose their decorative appearance and have an unpleasant smell. If more than 50% of the crown is damaged, the plants dry quickly.
Fire-fighting measures
- Against the caterpillars of a younger age, the microbiological preparation “Lepidocide” can be used (repeated after 7-10 days).
- Against the older caterpillars, the preparations “Karate Zeon”, “CE”, “Decis pro”, “VDG”, “Fu-fanon”, “Nova”, “CE” (20 ml / 10 l of water) are effective.
- Processing must begin immediately when the first damage.
See also: Protecting the garden from pests, spraying and processing from A to Z - calendar memo
SAMSHITE FIRE - HOW TO FIGHT: VIDEO
See also: Who eats boxwood on the root and how to deal with it?
© Author: Anna TKALENKO, Doctor of Agricultural Sciences
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