What is pest control for lilies?

1.Lily leaf blight.

It mainly harms leaves, but also stems, buds and flowers. The disease occurs in the upper part of the leaf, the lesion is round or oval, the size is different, light yellow to light reddish-brown, the edge is light red to purple, the disease produces a gray mold layer when wet, the lesion becomes thin and brittle when dry, translucent, light gray, the whole leaf dies in severe cases, and the stem and flower are brown rot after the disease. The pathogen is infected by sclerotia on the remains of diseased flowers for winter, and the wind and rain are infected, and the disease can be controlled with 75% chlorothalonil or 50% carbendazim 600 800 times solution.

2.Lily blight.

The disease damages leaves, flowers, stems and bulbs, and the leaves are initially water-stained small spots after infection, which expand into gray-green lesions, soft rot, and white mold layer on the surface. The disease is caused by the infection of Phytophthora malphats, which overwinters in the soil and is more likely to be sick when it rains. During the growth period, it can be sprayed with 200 times of 40% ethylphosphine aluminum wettable powder or 800 times of 25% methacrylin wettable powder.

3.Lily stem rot.

The disease occurs mostly during the storage and transportation period, mainly harming the bulbs, which is manifested as brown rot. The pathogen survives and overwinters in diseased bulbs and infected soil, becoming the main source of infection, and can be soaked in bulbs with 50% benzelat 500 times for 15 to 30 minutes or 40% formaldehyde for seed bulbs for hours.

4.Lily latent mosaic virus.

It is manifested as green spots and withered spots on the flowers and leaves at the seedling stage.

5.Root mites spinyfoot.

Adult mites are milky white and pear-shaped. It is mainly harmful to bulbobs under the soil, and the damaged part is black rot, and the leaves are yellow. After harvesting, it can be controlled by soaking 40% dicofol 1000 times for 2 minutes.

The main diseases are wilt, rot, blight, leaf blight, etc.

The rot disease occurs on the bulb, and the diseased part is dark brown and rotten, and white mold grows on it. Blight occurs during the rainy season, causing the scales to dry out. Leaf blight began to occur in May 4, and the disease was severe during the rainy season, and the affected seedlings shriveled.

Before colonization, the bulbs were soaked in 50% methyl tobuzine 800 1000 times, or 50% carbendazim 1000 times for 15 minutes. When the seedlings emerge, spray 500 800 times of 50% Ruixin mildew wettable powder, or 500 700 times of 70% mancozeb, and spray 1 time every 10 15 days, a total of 2 3 times. When the plant height is 30 cm, the roots were irrigated with 500 times of 50% methyl tobuzin or 1000 times of carbendazim.

Aphids and lily tube thrips can be controlled with 1000 times of imidacloprid.

Symptoms are also known as "lily latent mosaic disease". The specific symptoms are that the leaves will have dark and light brownish-green spots and dead spots, the infected plants will grow short, the leaves will also become smaller and curled at the edges, and occasionally the petals will grow light brown fusiform lesions, and the flowers will be abnormally shaped and cannot be relaxed.

Control methods The seeds should be selected on virus-free bulbs, and do a good job in the prevention and control of aphids and leafhoppers and other insect pests, once the disease is infected, the diseased branches should be uprooted and destroyed immediately.

Symptoms At the beginning of the disease, small brown spots will develop on the leaves, which may expand into brown spots with darker brown edges. Then there will be a lot of black spots in the center of the lesion, and in severe cases, the whole leaf will turn black and die.

Prevention and control method Remove the diseased leaves, and spray them with 500 times of 65% concentration of zinc wettable powder to cut off the spread of the virus.

Symptoms The specific symptom is the appearance of brown lesions on the bulbs of the lily, and in severe cases, the bulbs all turn brown and rot.

Prevention and control methods At the beginning of the disease, 50% concentration of 300 times of zebin is selected for spraying.

Symptoms The initial stage of the disease is manifested in the tip of the lower part of the leaf, and it occurs on the leaf, and there will be irregular large and small round lesions on the diseased leaf, and the color is also light yellow and gray-brown depending on the variety. Severely ill leaves will die.

Prevention and control methods: To cultivate lilies in greenhouses, it is necessary to ensure ventilation and light transmission and improve management intensity; When the disease occurs, the diseased leaves should be removed, and 800-1000 times of 50% concentration of antibacterial special wettable powder or 1% of the concentration of 1% of Bordeaux liquid should be sprayed every 7-10 days, and 3-4 times can be sprayed.

It is said that "a long illness becomes a good doctor", and the only one who can become a doctor of flowers is our flower friends, to hold up an impermeable umbrella for their beloved flowers.

1.Leaf blight, clinical manifestations: it first occurs under the leaves, irregular round spots appear on the diseased leaves, and in severe cases, the leaves die. Precautionary measures: Once the disease is found, the diseased leaves should be picked in time and sprayed with a special antibacterial agent, once every 7-10 days.

2.Mosaic.

Symptoms: At the onset of the disease, uneven spots will appear on the leaves, resulting in the dwarf of the plant, the leaf edge will also curl, and the whole leaf will become smaller. In addition to being harmful to the leaves, it can also affect the petals, causing light brown spots on the petals and not flowering easily.

Prevention: When planting, disease-free seedlings should be selected, so that the infection can be eliminated from the source. In daily life, it is necessary to strengthen the control of pests, which can also affect the disease. Once the diseased plant is found, it should be uprooted in time, and then destroyed in a centralized manner.

3.Spotted disease.

Clinical manifestations: At the beginning of the disease, small brown spots will grow on the leaves, and then black thick spots will appear in the center of the lesions, and in severe cases, the whole leaf will turn black and die.

Prevention: Remove the sick leaves in time to prevent the spread of the disease, and then spray with zepin for a good effect.

Symptoms: At first, the disease is under the leaves, and irregular round lesions appear on the diseased leaves, and when the disease is severe, the leaves will die.

Prevention and control: When the disease is found, it is necessary to remove the diseased leaves in time, and spray the special agent of antibacterial, and spray it once every 7-10 days.

Symptoms: When this disease occurs, uneven spots appear on the leaves, causing the plant to become dwarfed, the edges of the leaves also curl, and the shape of the entire leaf becomes smaller. In addition to harming the leaves, it can also affect the petals, resulting in light brown lesions on the petals, which will not bloom easily.

Prevention and control: When planting, it is necessary to choose disease-free ones, so as to eliminate infection from the source. It is necessary to strengthen the control of insect pests, and pests will also affect the disease. When diseased plants are found, they need to be uprooted in time and then destroyed together.

Symptoms: At the beginning of the disease, small brown spots will grow on the leaves, and then black spots will appear in the center of the lesions, and in severe cases, the whole leaf will turn black and die.

Prevention and control: remove the diseased leaves in time to prevent the spread of the disease, and then spray with zebsen, which can have a good effect.

Lilies are also known as Juan Dan, Fanshan Dan, etc. It prefers a cool and humid semi-shaded environment, is more cold-tolerant, but not heat-tolerant, and avoids dryness. I would like to introduce you to the cultivation method of lilies.

The flower language of lilies, lily disease treatment, common pests and diseases of lilies, lily leaf disease control, what is the disease of lily leaf yellowing:

Leaf blight: At the beginning, the disease is on the lower side of the leaves, and the diseased leaves are removed immediately after the onset of the disease, and the special drug is sprayed, and it is sprayed every 7-10 days. Mosaic.

This disease causes uneven black spots on the leaves, in order to prevent the disease, plant and select the disease-free, improve the prevention of the disease, and immediately pull out the main stem of the disease to eliminate the brother stupid destruction. Black spot disease: the disease is more serious, causing all the leaves to be black and wilted, which can be sprayed with zebin dysen.

1. Leaf blight.

Symptoms: The disease begins on the underside of the leaves, with arc-shaped ring-shaped spots on the diseased leaves, and when the disease worsens, the leaves wilt.

Prevention: When the disease is detected, the diseased leaves must be removed immediately, and the antibacterial special drug must be sprayed, and sprayed every 7-10 days.

2. Mosaic disease.

Symptoms: When this disease occurs, uneven black spots appear on the leaves, causing the main stem to become shorter and shorter, and the edge of the leaves will also shrink, and the appearance of all the leaves will shrink. In addition to damaging the leaves, it can also harm the flowers, causing light brown lesions on the flowers, which are not easy to bloom casually.

Prevention: At the time of planting, it is necessary to choose disease-free ones, so that they can avoid the root cause. It is necessary to improve the prevention of diseases, and insect pests can also harm the disease. When the main stem is found to be diseased, it must be pulled out immediately, and then it will be concentrated and destroyed.

3. Black spot disease.

Sickness: At the beginning of the disease, small dark brown spots will appear on the leaves, and then small black spots will appear at the core of the lesions, and in more serious cases, all the leaves will be black and wilted.

Prevention: Immediately remove the diseased leaves to avoid the spread of the disease, and then spray with zeb zinc, which can have a very good practical effect.

Through our introduction, I believe you have a deeper understanding of the pest control methods of lily leaves.

Common diseases of lilies are: lilies.

Leaf disease, bulb rot, spot disease, leaf blight, etc.

1. Lily mosaic disease. It's called lily latent mosaic disease. At the onset of the disease, the leaves appear different shades of brown-green spots or dead spots, the damaged plants are dwarfed, the leaf margins are curled, the leaf deformation is small, and sometimes the petals will appear fusiform light brown lesions, the flowers are deformed, and it is not easy to open.

Control methods: select virus-free bulbs to keep seeds, strengthen the control of aphids and leafhoppers, and remove and destroy diseased plants in time.

2. Spot disease. At the beginning of the disease, small brown spots appear on the leaves, which enlarge and appear brown spots with dark brown edges. Later, many small black spots are produced in the center of the lesion, and in severe cases, the whole leaf turns black and dies.

Prevention and control methods: remove the diseased leaves, and spray wine with 500 times of 65% zeb wettable powder to prevent spread.

3. Bulb rot disease. After the onset of the disease, the bulb produces brown lesions, and finally the entire bulb is brown and rots.

Prevention and control methods: In the early stage of the disease, 300 times of 50% zebsen can be watered.

4. Leaf blight. Mostly occurs on the leaves, mostly from the tip of the lower leaves, after the onset of the leaves produce the size of the round or irregular lesions, due to different varieties, the lesions are light yellow to gray-brown. In severe cases, the whole leaf dies.

Prevention and control methods: pay attention to ventilation and light transmission in greenhouse cultivation, and strengthen management; In the early stage of the disease, remove the diseased leaves, spray wine for 7 10 days, 1% equivalent Bordeaux solution or 50% antibacterial special wettable powder 800 1000 times liquid, spray 3 4 times.

In addition, there are anthracnose, root rot, gray mold, blight, bulb rot, etc., the disease should be immediately uprooted in the early stage of the disease, sprayed or irrigated with 50 carbendazim 500-600 times liquid, and 300 grams of 50 dysenammonium are mixed. Healthy bulbs and disease-resistant varieties should be selected when planting, the soil and bulbs should be strictly disinfected before planting, crop rotation should be implemented, and Bordeaux liquid should be sprayed regularly after planting to prevent disease.

For anthrax, spray 75 chlorothalonil 800 times and 50 anthrax magnesium wettable powder 500 times, once every 10 days, 2-3 times.

At the beginning of the onset of gray mold, spray 500 times of 80 mancozeb, or 1500 times of 50 sulfalline wettable powder, 800-1000 times of 75 chlorothalonil or 1 Bordeaux solution, and spray 1 time every 10 days, 2-3 times.

In the early stage of blight, remove the diseased leaves, use 1 equal amount of Bordeaux liquid, 75 chlorothalonil wettable powder 500-800 times, or 50 antibacterial special wettable powder 800-1000 times, spray once every 7-10 days, spray 3-4 times, have control effect.

Before planting, 0·5 quintonitrobenzene can be used to prevent the occurrence of bulb rot, and 50 times of 50 dysenium can be watered or sprayed in the early stage of the disease.

If there is aphid and grub damage, it can be sprayed with 50 dichlorvos emulsifiable concentrate 1000 times, or 20 pyrethrin emulsion 1000 times liquid for prevention and control.