What is terrible asphidAphids on pears - what to process?- A question asked frequently. But it is necessary: what and when to process a pear so that it has aphids. For this you need to know the pest "in person", the stages of development and reproduction. It is impossible to defeat universal evil, but man learned to restrain the number within the limits of least harm.
What is terrible for
? Most often, pear trees are occupied by apple, brown, and bloody aphids, which, for the full development cycle, choose one source of food. Such insects are called monoecious. There are dioecious, which in the season move to other types of cultivated plants.
Aphids represent a gigantic insect of no more than 3 mm in size. It can be green, brown, black, red. In development, they bypass the pupal stage. The first individual will appear from the egg left in the autumn by the trunk treshinka or on the ground in the near-stem circle.
First aphids start reproduction, giving offspring 16 times over the summer. The colony is growing exponentially, unrestrained. Each next individual lays 60 eggs. The tops of the shoots stop growing, the leaves curl into a tube, creating a shelter for the colony. Get to know how the aphid looks on a pear in the photo:
In the second half of the summer, the pear aphid flying females appear. They must fly to another tree and multiply there. At the end of the summer, male aphids appear in the clutch, which have wings and are not in a colony. In autumn they will fertilize females, they will lay eggs for the continuation of the species next year.
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Pear aphid not only changes the composition of the cell sap, forcing the lamina to alter the shape. This bag, filled with cellular juice, exudes sweet stool. Ants feed on the sweet paddy, and a black mushroom starts on it. The tree is oppressed, photosynthesis is broken. But suckers fly in addition. And they can transmit the virus from an infected tree to a healthy one through saliva. How to process aphids on a pear depends on the degree of dispersal and period.
The presence of a large number of ants on the site will inevitably lead to the resettlement of aphids. Therefore, the struggle for the cleanliness of the garden should be comprehensive and systematic.
Among the many species of aphids, 20 species inhabit pears. They like the taste of pear juice.
The green aphid lives not only on the pear, but also on other bottom trees. It was she who from the very spring populates the tender foliage from the back side. The leaves are twisted, the escape ceases to develop.
Folk remedies are effective in the initial period. As soon as the sheet is curled into a tube, neither dust nor a drop of moisture penetrates it. The top insects will be destroyed, but the colony will be restored again.
Brown Aphid is a pest of pear. A brilliant black egg attached to the bark of a tree. Adult insect length 2.5 mm. Color saturated black. Swelling from the juice, the aphid takes on a brown tint. Insect pierces the leaves along the central vein of the leaf. There are blooms for the larvae. Leaves lose their shape and color. Tree acquires autumn color
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Blood aphid is a mild climate. Populates apple trees, pear. The peculiarity of this aphid is that when crushed, the liquid is red, and the colony resembles a cotton ball. Each individual is covered with white fluff.
Bloodfly feeds on shoots, trunks, roots. The place where the wound from the sucker appeared does not linger, an ulcer appears - a direct gateway to fungal diseases. More young saplings are exposed to the invasion of the bloody aphid, which it destroys. Hover eggs overwinter in roots. There are also adult aphids. Generations for season 10, each female gives rise to 200 individuals. In summer, winged females expand their habitat.
So how can I process a pear on a pear to free a tree from adversity?
Methods for preventing and controlling aphids
During the season, the grower constantly inspects the garden, which is food for many insects. Carrying out preventive measures can postpone the period of the appearance of aphids, reduce the number, but it is impossible to completely rid the garden of it. Before dealing with aphids on a pear, you can prevent its appearance.
- Eggs on the bark of a tree are destroyed in late autumn. The bark is cleared of dirt, the cracks are treated with an antiseptic, covered with pitch. After the tree is whitened. Pristvolny circle digging.
- In autumn, the tree bark and tree trunk are poured with very hot water, up to 80 degrees. Short-term action. The bark will survive, the eggs of insects will die.
- In spring, a tree is protected from aphids crawling out of the ground and their peddlers, ants, by putting a sticky belt on the tree trunk.
- Even before the blooming of the kidneys, they are treated by insecticides for aphids. Most of the first larvae will die.
Treatment with chemicals against aphids can be carried out only before the fruit are set and after harvesting.
The effective method of chemical prophylactic treatment is considered to be treatment in early spring before the buds swell Kinmiks, before flowering Agravertin, after ovary fruits - Iskra. In the future, chemicals are used in exceptional cases.
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Using folk remedies, for treating aphids on a pear than better? Insects remain, natural enemies of aphids - ladybugs, hoverflies, golden-eyed flies, aphelinuses. Under favorable conditions, they can significantly thin out the pest colony.
In addition, the aphid is washed off with a stream of cold water, but later it must be swept out from under the tree, or buried deeply loosened. It helps the soap solution - a pack of soap in a bucket of water. Ash extract has a detrimental effect on all insect pests. Infusion of onion peel, garlic, celandine, dandelion - all means and infusions, decoctions reduce the number of insects. But the development of the colony will continue if the leaf has already become gall.
Even after completing all the activities, one cannot be sure that in the middle of summer the flying aphid will not settle on a pear.
We fight against aphids in the garden - video