What to do with the growing insects of carnations? there are five major diseases and insect pests in carnations.

Carnations, needless to say, we should know each other, it can be kept at home as a scenery, given to the mother can express love and respect. With so many flowers, naturally many people choose to raise them, but in the process of breeding, there will inevitably be a variety of conditions, such as illness or bugs, then what about the carnations? The following is the carnation pest control selected by the editor. Let's get to know it.

I. Prevention and control of diseases and insect pests of carnations

In the culture method of carnations, we know that carnations have a high degree of soil, light, temperature and so on. once they do not meet the standards, carnations will get sick or be attacked by insects, resulting in yellowing, drying up and even death of the leaves. In such a situation, we can not rush, first find out whether it is a disease or an insect pest, and then solve it. The prevention and control of diseases and insect pests of carnations are mainly divided into diseases and insect pests.

Second, carnation disease, leaf spot / gray mold

The diseases of carnations include calyx rot, rust, leaf spot, gray mold, bud rot, root rot and so on, but the common diseases in families are leaf spot and gray mold, which need to be dealt with in time. The following editor introduces the symptoms and prevention methods of carnation diseases.

1. Leaf spot

Symptoms: carnations are easily infected with leaf spot disease, affecting growth. When the disease occurs, there will be long striped disease spots on the stems and leaves, and in severe cases, the disease spots will cut the stems, so that the upper branches and leaves will die. If the disease is infected at the flowering stage, the flower can not open or appear deformed.

Prevention and treatment methods: disinfection was carried out during planting, diseased plants were found and diseased plants were removed in time. Strengthen the management, keep the plant surface dry as far as possible, and plant in the place of ventilation, light transmission and good drainage. The greenhouse is well ventilated and ventilated before dusk.

Special note: leaf spot disease can occur year after year, so preventive fungicides such as manganese, zinc, prohydantoin and chlorothalonil must be sprayed once a week, especially at the peak of flowering. 75% chlorothalonil, 50% carbendan 500 times or 1% Bordeaux solution can be used.

2. Grey mold

Symptoms: affected by Botrytis cinerea, carnations appear brown watery spots after they are covered with gray mold on buds, petals, stems and leaves, causing petals to rot, buds to fall off, stems and leaves to die, susceptible buds not to open, diseased flowers to lose their color, serious disease and rapid spread in high temperature and humidity, rampant damage, must be prevented and prevented in order to protect stems and leaves, buds and petals in order to promote flowering and prolong flowering. Improve the ornamental value.

Control method: spray 1000 times potassium permanganate aqueous solution once a month to wet all leaves, buds and petals evenly, so as to start dripping water. If there are many Rain Water, high temperature and high humidity, there will be a lot of gray mold on the stems, leaves and buds. 1000 foliar is sprayed continuously for 2-3 times, once every 7-10 days, in order to kill the bacteria and quickly restore the normal growth of the diseased parts. Promote strong stems and leaves, buds and petals, promote flowering.

III. Five major diseases and insect pests of carnations

In the prevention and control of diseases and insect pests of carnations, in addition to diseases, we also need to pay attention to insect pests. The conservation methods of potted carnations are different, and the types of insect pests are different. It is understood that carnations have five major diseases and insect pests, namely, aphids, diamondback moths, leaf mites, longicorn beetles and beetles.

1. Aphids

Aphids are bluish yellow insects that harm almost all flowers and trees. Between spring and summer, it is often concentrated on new shoots or buds such as carnations. Sucking liquid juice with mouthparts will cause the young leaves to curl and atrophy, which will not only affect the growth and flowering, but also wither the plants.

Prevention and treatment methods: spray 3000 times of 40% dimethoate emulsion (that is, 3 kg of water plus 1 gram of dimethoate emulsion). In addition, there are two simple methods of prevention and treatment: one is to soak 5 grams of cigarette butts with 70-80 grams of water for 24 hours, rub them slightly, filter out the dregs with gauze, and then spray. The second is to use the washing powder water (soap liquid water) of 1RU 200. In order to improve the effect, you can add a few more drops of vegetable oil, stir it fully, and spray it with a sprayer when there is no oil on the surface. 2. Diamondback moth

Commonly known as Caterpillar, itchy spicy, this pest likes to bite the leaves of carnations. When seriously injured, the leaves of the whole pot of flowers were eaten up in less than a few days. The diamondback moth lurks on the back of the leaves and is often ignored if it is not careful.

Control methods: if there are few pests and light harm, the damaged leaves can be removed and burned. Spray 90% crystal trichlorfon 1,200 times (that is, 1 kilogram of water added to 1 gram or more of trichlorfon), or 50% fenitrothion emulsion 500ml 800 times. 3. Leaf mite

Also known as red spider, is one of the main insect pests of carnations. The body of the leaf mite is small and red, which is difficult to see with the naked eye. Like to absorb juice on the back of the leaves, the injured leaves turn yellow, there are many small white spots, and soon wither and yellow fall off. Control methods: remove weeds in the basin and eliminate overwintering eggs. When harming, use 40% dimethoate emulsion 1 000 won 1500 times (that is, 1 kg of water added to 1-1.5 grams of dimethoate), or spray 40% dicofol emulsion 2000 times. 4. Longicorn beetles

Also known as trunk borer, heart borer, is also one of the carnation pests. Prevention and control method: cut off the damaged tree trunk, capture and destroy it. Or use a knife to remove insect dung and sawdust, inject omethoate 1:50 liquid from the mouth of the hole, and then seal the hole with mud. 5. Beetles

Also known as white silkworm, white silkworm. Its larvae are called grubs, and their feeding habits are very miscellaneous. They are the main underground pests of carnations. Prevention and treatment: deep ploughing in winter can promote the death of the overwintering generation. Watering 50% marathon emulsion 800-1000 times during the active period; protect natural enemies.

Raise carnations carnations begin to wither, what about the worms? How to cultivate carnations and control diseases and insect pests?

Carnation is an excellent variety of cut flowers, with delicate colors, fragrance and long flowering period, which is loved by many flower friends. However, some flower friends have all kinds of problems when they buy them back, which makes people worried.

The following editor has searched for some methods of breeding and pest control, hoping to solve your urgent needs.

The main results are as follows: (1) the withered leaves of carnations should control the light and temperature: the preference for strong light is an important characteristic of carnations. Whether indoor, potted over summer or greenhouse to promote cultivation, all need sufficient light, should be placed in the sunny position of direct light. The most suitable environmental temperature for the growth of carnations is 13-25 degrees, and the light conditions are controlled at 6-8 hours a day. Carnation is in a semi-dormant state in midsummer, avoiding hot sun exposure, and it is easy to cause wilt symptoms when the temperature is higher than 30 degrees Celsius.

(2) avoid rotten roots of carnations, and master the principle of watering: if the basin table is not dry, it should be watered thoroughly, and waterlogging is avoided. Pay attention to loosening the soil and drainage in the rainy season. Except for timely watering during the growing and blooming season. Usually can be less watering, in order to keep the soil moist. If there are conditions, it is appropriate to keep the air wettability at about 75%.

(3) if you want carnations to grow healthily, pay attention to fertilization: before planting, apply sufficient basic fertilizer containing potassium, calcium, nitrogen and phosphorus (or apply sufficient amount of baking fertilizer and bone meal). Liquid fertilizer should also be applied continuously during the growing period, generally applying mature thin fertilizer and water every 10 days or so, and applying topdressing after flower picking. Fertilization is prohibited during the high temperature period in summer, otherwise it is easy to wither and die.

The common diseases of carnations are leaf spot and gray mold, and the main insect pests are aphids and red spiders.

(1) carnation leaf spot.

Also known as stem rot, is a serious disease of carnations. It often occurs on leaves and stems, and sometimes on buds and flowers. Most of the disease on the leaves starts from the lower part, which first produces small round spots like light green water stains, and then gradually turns purple. With the enlargement of the lesion, death occurred in the center of the spot. The edge is brown, the spot is round, oval or irregular, about 4-5 mm in diameter, the central dead part is grayish white to gray, and later produces a black mildew layer on the spot. When the plant was seriously damaged, the leaves withered and drooped, but did not fall off. on the branches, the disease spots surrounded the stems or branches for a week, the upper branches, leaves and buds withered and died.

The disease can occur from early April to early winter and can occur all the year round in greenhouse, especially in midsummer and rainy season. If it is planted too densely, it will spread quickly.

Prevention and control of diseases and insect pests of carnations:

When ① is planted in areas with serious disease in the south, disease-free branches should be selected from strong plants to prevent the initial infection of pathogens, and fine-leaf varieties with strong antimicrobial activity in the north can also be introduced.

After picking buds and cutting flowers in ②, 75% chlorothalonil, 70% mancozeb or 80% mancozeb wettable powder can be sprayed 500x, or 1% Bordeaux solution can be sprayed. If the disease occurs during the growing period, diseased leaves or diseased plants should be removed in time, and the above-mentioned agents should be sprayed to prevent the spread of the disease.

(2) Botrytis cinerea carnation.

The disease often occurs on petals and buds, and occasionally on stems and leaves. After petal infection, at first the edge of the petals appeared light brown water immersion, and gradually most of the petals were invaded and multiplied by gray fungi. At this time, if the temperature and humidity were higher, it was easy to cause decay. When the disease occurs on the bud, it shows irregular spots in the form of water immersion, and gradually decays, so that the whole bud can not open.

Prevention and control methods: ① pay attention to indoor ventilation and light transmission, reduce humidity; ② found that the timely removal of diseased plants; spray 75% chlorothalonil wettable powder every 15 days or so, spray 2-3 times, effective and good control effect.

If the carnation has rust, it can be sprayed with 800 times rust sodium solution.

When carnations are harmed by aphids and red spiders, they can be sprayed with 1000 times of dimethoate emulsion or 1000 times of dichlorvos emulsion.

Carnations begin to wither, what about the worms? How to cultivate carnations and control diseases and insect pests?

Carnation is an excellent variety of cut flowers, with delicate colors, fragrance and long flowering period, which has won the favor of many flower friends. However, some flower friends have all kinds of problems when they buy them back, which makes people worried.

The following editor has searched for some methods of breeding and pest control, hoping to solve your urgent needs.

The main results are as follows: (1) the withered leaves of carnations should control the light and temperature: the preference for strong light is an important characteristic of carnations. Whether indoor, potted over summer or greenhouse to promote cultivation, all need sufficient light, should be placed in the sunny position of direct light. The most suitable environmental temperature for the growth of carnations is 13-25 degrees, and the light conditions are controlled at 6-8 hours a day. Carnation is in a semi-dormant state in midsummer, avoiding hot sun exposure, and it is easy to cause wilt symptoms when the temperature is higher than 30 degrees Celsius.

(2) avoid rotten roots of carnations, and master the principle of watering: if the basin table is not dry, it should be watered thoroughly, and waterlogging is avoided. Pay attention to loosening the soil and drainage in the rainy season. Except for timely watering during the growing and blooming season. Usually can be less watering, in order to keep the soil moist. If there are conditions, it is appropriate to keep the air wettability at about 75%.

(3) if you want carnations to grow healthily, pay attention to fertilization: before planting, apply sufficient basic fertilizer containing potassium, calcium, nitrogen and phosphorus (or apply sufficient amount of baking fertilizer and bone meal). Liquid fertilizer should also be applied continuously during the growing period, generally applying mature thin fertilizer and water every 10 days or so, and applying topdressing after flower picking. Fertilization is prohibited during the high temperature period in summer, otherwise it is easy to wither and die.

The common diseases of carnations are leaf spot and gray mold, and the main insect pests are aphids and red spiders.

(1) carnation leaf spot.

Also known as stem rot, is a serious disease of carnations. It often occurs on leaves and stems, and sometimes on buds and flowers. Most of the disease on the leaves starts from the lower part, which first produces small round spots like light green water stains, and then gradually turns purple. With the enlargement of the lesion, death occurred in the center of the spot. The edge is brown, the spot is round, oval or irregular, about 4-5 mm in diameter, the central dead part is grayish white to gray, and later produces a black mildew layer on the spot. When the plant was seriously damaged, the leaves withered and drooped, but did not fall off. on the branches, the disease spots surrounded the stems or branches for a week, the upper branches, leaves and buds withered and died.

The disease can occur from early April to early winter and can occur all the year round in greenhouse, especially in midsummer and rainy season. If it is planted too densely, it will spread quickly.

Prevention and control of diseases and insect pests of carnations:

When ① is planted in areas with serious disease in the south, disease-free branches should be selected from strong plants to prevent the initial infection of pathogens, and fine-leaf varieties with strong antimicrobial activity in the north can also be introduced.

After picking buds and cutting flowers in ②, 75% chlorothalonil, 70% mancozeb or 80% mancozeb wettable powder can be sprayed 500x, or 1% Bordeaux solution can be sprayed. If the disease occurs during the growing period, diseased leaves or diseased plants should be removed in time, and the above-mentioned agents should be sprayed to prevent the spread of the disease.

(2) Botrytis cinerea carnation.

The disease often occurs on petals and buds, and occasionally on stems and leaves. After petal infection, at first the edge of the petals appeared light brown water immersion, and gradually most of the petals were invaded and multiplied by gray fungi. At this time, if the temperature and humidity were higher, it was easy to cause decay. When the disease occurs on the bud, it shows irregular spots in the form of water immersion, and gradually decays, so that the whole bud can not open.

Prevention and control methods: ① pay attention to indoor ventilation and light transmission, reduce humidity; ② found that the timely removal of diseased plants; spray 75% chlorothalonil wettable powder every 15 days or so, spray 2-3 times, effective and good control effect.

If the carnation has rust, it can be sprayed with 800 times rust sodium solution.

When carnations are harmed by aphids and red spiders, they can be sprayed with 1000 times of dimethoate emulsion or 1000 times of dichlorvos emulsion.