HomelinessPest Control

Pests of onions and struggle with them. Than to process an onion from pests?

Without a bow can not imagine any garden. This healthy vegetable is included in the recipe of many dishes, and is also an excellent medicine, which has no contraindications and side effects. Onions can with good care give an excellent harvest, because it is resistant to adverse weather conditions and not too demanding on the soil.

The only thing that can prevent a summer resident from growing a quality and healthy onion is illness and pests. The latter, according to experts, are a greater threat than infections, because they are able not only to spoil the largest bulbs with unsightly wormholes, but also to provoke allergic reactions to the products of their vital activity. In addition, even small damage to the bulb promotes the ingress of various pathogenic microorganisms into it, which can go unnoticed for a long time, and then unexpectedly destroy the entire crop.

Signs of appearance of pests on onions planting

Whatever the pests of onions (flying or moving just below the surface of the soil), traces of their activity can be seen quite easily. First, the pen will signal about their appearance by yellowing and / or wilting. Secondly, plants damaged by various insects begin to noticeably lag behind in growth. Thirdly, the above-ground part of the culture is deformed, inflated or bent. Ogorodniki often do not pay attention to such metamorphosis, and pests of onions, photos of which will be demonstrated further, continue their destructive procession through the beds. If you do not take the necessary measures, the harvest of a healthy vegetable will be lost completely. So, it's time to get acquainted with these insects closer.

Onion fly and fly-fly

The earliest pests of onion onion - onion flies are the first to begin their march on planting. Their years begin in late May or early June. The fly itself does not threaten planting, this role went to a small white head with an insect's dark larva. Set aside at the base of the onion stalk, they deepen into the soil and gradually gnaw into the upper part of the bulb. Since damage to the underground part of the plant by the onion fly takes place at the initial stage of growth, yield losses can be 100%.

Flies-murmurs are pests of onions, capable of destroying most of the crop. Just like the onion fly, this insect lays eggs on the beds, after which they descend into the soil. Already there, larvae appear from them, gnawing through the bulbs inside the bulbs. For a long time, the symptoms of damage remain invisible, since the feather continues to grow due to the nutrients present in the bulb. Only with the beginning of August the summer resident can find out on the garden completely rotted onions.

Flies are very dangerous pests of onions, and the fight against them must begin from the first days after planting a crop. To begin with, you must wrap up the beds with peat. When the laying of eggs onion flies and fly-flies can be used irritants, such as tobacco dust and slaked lime with fine sand in a proportion of 1: 1. You can also scare off insects from landing with mothballs. If pests of onions still penetrated into some plants, they should be carefully removed from the beds, and sprinkle with the mixture of ash with slaked lime and the place where they grew .

Covert-hood

Another insect, the activity of which can lead to a large loss of yield, is a secretlyhabitat, a small beetle from the family of weevils. These pests of onions and struggle with them differ little in the way of damage to onions from the above-mentioned flies. The only thing that is characteristic of secretivehistorians is the method of delivering their larvae to the inside of the bulb. Beetles gnaw small round holes in the aboveground green part of the plant and lay their eggs inside them. Tiny insect larvae penetrate the underground part of the onion from above and start gnawing inside the cavity.

To scare off adults from planting is possible with the help of strongly smelling substances. For example, you can spill sand between the rows, mixed with powdered mustard and ground pepper, as well as mothballs or tobacco dust.

Onion moth

The onion moth itself does not damage the planting, but its larvae are malicious pests of onions. They feed on plant tissues, penetrating inside its leaves. As a result, the aboveground part of the plantations turns yellow and eventually completely dies. After this, the bulb also ceases to grow, and the nourishing and plastic substances from the pen are lost. In order not to decide how to treat onions from pests, it is worthwhile to make sure that the moth could not lay eggs on the surface of the plants. To do this, many experienced gardeners during the summer of the insect build a shelter over the beds from the finest nonwoven material or equip the beds with various repellents.

Thrips

The thrips are microscopic insects that feed on the juice of plants, including onions. The surface of the onion pen, affected by this pest, is covered with silvery spots, on which, upon closer examination, you can see black dots. Over time, the bow feather dies, and bulbs that do not receive the required amount of nutrients from the aerial part, lag behind in growth.

These pests Perfectly winter in the soil, and also remain in the planting material. That is why it is important to observe the crop rotation and before processing planting sowing by special means or to warm it at a temperature of no more than 50 degrees for 15 minutes.

Potato and winter potato pods

Caterpillars of a potato or winter scoop feed on roots and aboveground part of onions, gnawing young shoots at the surface of the soil or eating large cavities inside the bulbs. In a word, they do not disdain anything. Before treating the onion from pests, it is important to carefully inspect all the beds and remove the damaged plants by the caterpillars. Experienced gardener advise not to pull the gnawed onions, but gently take it out of the garden with a scoop along with a lump of soil. In this case, the caterpillars are guaranteed to be removed from the bed.

General advice on pest control

So, what should a summerman do if the onion pests appeared on his beds, and the struggle with them begins to turn into a protracted battle for the harvest? The first thing that comes to the mind of every master of six hundred square meters is to etch the whole garden to prevent the spread of insects. Here it should be immediately said that this method is most often the most inefficient, because the chemicals for each type of insect are selected individually.

Onion flies and flies, as well as their larvae, can be destroyed by double treatment of plantings with preparations of "Fufanon" and "Bazudin", potato scoop and onion mole - solution of "Iskra M" from caterpillars, secretive sphincter and its larvae with a solution of carbophos. Microscopic pests (aphids, mites and thrips) are practically not amenable to destruction by ordinary pesticides. They can be destroyed only with a solution of colloidal sulfur.

Folk methods of pest control onions

There are several recipes for fighting pests onions, to prepare funds for which is not difficult at home. For example, flies (onion and babbling) can be scared off from the beds with onions with the help of tinctures of tobacco and black ground pepper. Experienced gardener also uses a salt solution to protect them from their larvae, which is poured directly under the roots of the plants. Helps cope with the invasion of insects and repeated dusting of beds with tobacco dust, spicy red pepper (ground) and ash, taken in equal proportions. The onions processed by this method and pests are bypassed.

How to prevent damage to onions by insect pests

No matter how effective the methods and means of fighting insects, it is best not to let them appear on the beds. First, every trucker should remember the crop rotation. Bow must not be landed in the same place for several seasons in a row. In the autumn it is important to carefully clean the area of all plant residues, in which pests can overwinter, and also dig deeply the area on which the onion was grown. This will help get rid of the surviving insects and even nematodes. Secondly, pay attention to the combination of plants in neighboring beds. Next to the onions, it is best to grow carrots, as it scares away many of its pests with its odor. Third, it is important to properly prepare the planting material: warm it in hot water (50 degrees) and etch with special compounds. Thus, the pests of onions and the control of them can not be uncomfortable at all, and even the seasoned summer residents will envy the crop.

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