What are the main diseases and insect pests of daffodils? How to prevent and cure?

The main diseases and insect pests are brown spot (spot disease), rot, nematode disease, daffodil fly, acaroid mite and so on.

(1) from March to May, spray 75% chlorothalonil wettable powder 700 times, or equivalent Bordeaux solution 100 times, or 65% Dessen zinc wettable powder 500 times every 10 days. The seed balls were pre-soaked in clean water for 1 hour, and then soaked in 750-fold mercury water for 30 minutes before sowing.

(2) Rot disease and nematode disease disinfect seed bulbs and soil in the same way as other flowers.

(3) 1000 times of triclofenac EC, 1000 times of imidophos EC, 1000 times of ethyl acarol, or 1000 times of fenitrothion EC were used to kill acaroid mites.

(4) the daffodil fly can be fumigated with carbon disulfide or dissolved in 36kg water with 23g liter of mercury and irrigated during the growing period.

How to deal with daffodils, how to control daffodils diseases and insect pests / 4 insect pests and 4 diseases

There is no doubt about the beauty of daffodils, but in the process of breeding, due to improper maintenance and other reasons, will be disturbed by diseases and insect pests. Once the daffodils get sick, it will seriously affect their ornamental ability, so how to deal with the daffodils? The following is the daffodil pest control carefully organized by the editor, there are a total of 4 insect pests and 4 diseases, let's go and have a look.

First, how to deal with the daffodils and determine the insect pests

The daffodils are very beautiful and elegant, but they are dying after being attacked by insects, thus affecting the ornamental. As for what to do with the daffodils, we first have to determine what kind of bug it is, but we can solve it. It is understood that the common pests of daffodils are aphids, nematodes, root mites and daffodils. The specific symptoms and solutions are as follows:

1. Aphids

As one of the common pests of flowers, aphids also endanger the growth of daffodils, which mainly harm young branches and leaves. Symptoms: daffodils leaves will lose green, serious, the leaves will curl, become hard and brittle, can not absorb nutrients, affecting flowering.

Solution: after confirming that it is an aphid, flower friends should buy medicine to spray, and they can choose to spray with omethoate or pyrethroid 1000 times in turn.

2. Nematodes

Another insect that invades daffodils, it is a kind of tiny animal, its body length is less than 1 inch. Symptoms: daffodils will grow poorly, plants will be short, leaves will shrink, and even die at an early stage.

Solution: after discovering the above symptoms, spray with dibromochloropropane, carbofuran, mirabilone and other drugs, the effect is very good.

3. Acaroid mite

One of the common insect pests of daffodils, its external expression of love is similar to that of adult mites, but the color of acaroid feet is lighter, which mainly harms the roots of daffodils.

Solution: when it is found that the root mite is stabbed, flower friends can use 1000 times of dicofol and so on to spray.

4. Daffodils fly

In addition to the above pests, flower friends should also consider daffodil flies, because it is also a common pest of daffodils. It is understood that daffodil flies lay eggs in the soil, and the hatched larvae will invade the sphere. Symptoms: rotting and blackening of daffodil bulbs.

Solution: daffodils fly control is the main, in the growing period, flower friends can use carbon disulfide to irrigate daffodils.

Control of diseases and insect pests of daffodils: 4 diseases

About how to deal with daffodils, read the above content, we should know how to do it! However, some flower lovers do not follow the breeding methods of daffodils, which will not only cause insect damage, but also cause a variety of diseases. It is understood that there are three main diseases of daffodils: Brown spot, mosaic, gray mold and leaf blight. The specific symptoms and solutions are as follows:

1. Big brown spot

One of the main diseases of daffodils, which usually occurs from March to May. Symptoms: daffodils leaves tip, brown, with a clear boundary with the healthy part. After that, disease spots will also appear on the edge and middle of the leaves, and the pedicels can also be infected.

Solution: after finding the above symptoms, flower friends had better be sprayed and killed every 1-2 weeks, using 75% chlorothalonil 700 times.

2. Mosaic disease

Another disease of daffodils, symptoms: the initial performance is not obvious, or slightly green mottled; in the middle, produce obvious mosaic symptoms; in the later stage, daffodils leaves yellowing, twisted, the plant is obviously short and thin.

Solution: to find the above symptoms, flower friends should cut off diseased leaves, pull out diseased plants, and reduce the source of infection. 1% Bordeaux solution can be sprayed during the onset period.

3. Grey mold

The disease is one of the diseases of daffodils, which mainly harms the leaves, pedicels and flowers of daffodils. Symptoms: the leaves will produce yellow-green to dark green water-like plaques, gradually expand, when wet soft rot, the affected part of the gray, khaki mildew layer.

Solution: when the disease is found, the diseased leaves should be removed in time to avoid contact with infection. In serious cases, 50% carbendazim 500 times or 75% chlorothalonil 500 times can be sprayed, and it can be basically solved after a few sprays.

4. Leaf blight

The disease mainly occurs on the leaves of Narcissus, mostly from the tip of the leaves. Symptoms: in the early stage, the leaves fade green macula and expand inward in the shape of a fan; in the later stage, the leaves are dry and black grains appear. It is worth mentioning that the disease is also one of the reasons for the yellowing of daffodil leaves.

Solution: when the above symptoms are found, 50% Fumishuang 1000 times liquid can be sprayed, which has a good therapeutic effect. Of course, it is best to control leaf blight, remove dry scales before planting and rinse with dilute potassium permanganate aqueous solution for 2-3 times.

On daffodils pest control, the editor introduced here, read the above content, I believe that everyone in the process of raising daffodils, encountered the above situation, should be able to properly deal with it! Generally speaking, as long as we are more careful in the maintenance process, diseases and insects are very difficult to appear, it is best to wish everyone's daffodils can produce beautiful flowers!

Prevention and control of main diseases and insect pests of Narcissus

Daffodil mosaic disease

Symptoms: no symptoms or slight green mottling in the early stages of daffodil growth. With the development of the disease, obvious mosaic symptoms did not occur until the middle stage of growth, when the leaves were yellowed and twisted, and the plants were obviously short and thin. The pathogen is daffodil mosaic virus. Through leafhopper, juice and contact transmission, poisonous bulbs and bulbs are also important ways of transmission. The virus also infects red daffodils, daffodils, hyacinths, Catharanthus roseus, thousand-day red, petunia, tricolor spiral flowers, velvet tasseled chrysanthemum and other ornamental plants. In addition, cucumber mosaic virus can also cause daffodil mosaic disease.

Prevention and control methods:

The main results are as follows: 1. Detoxification by the combination of stem tip tissue culture and heat treatment, the cultivation of non-toxic seedlings, and the establishment of non-toxic mother ball base.

2. Pay attention to the hygiene in the field, remove and destroy the diseased plants immediately so as not to spread the virus.

3. Spraying insecticides to control peach aphids and other aphids and leafhoppers and other venomous insects, the above methods should be combined with comprehensive control, can achieve good control results.

Grey mold of Narcissus

Symptoms: after the daffodil bulb was damaged, the root disc rotted and softened, and the surface was covered with gray mildew layer.

Prevention and control methods:

1. Horticulture prevention and control

The bulb had better be placed on the bamboo curtain with a thin layer, and the storage place should be dry, ventilated and transparent.

2. Disinfection with medicament

The bulbs were treated with 0.5% formalin for half an hour, washed and stored in the shade.

3. Artificial prevention and control

If diseased bulbs are found during storage, they will be picked out and destroyed immediately.