What about the long insects of plum blossoms? common diseases of plum blossoms and their control / 3 insect pests and 3 diseases

Plum blossom is a famous plant in China, which has the characteristics of perseverance and strong vitality, but it may lead to plant death if there are diseases and insect pests. About the plum blossom long insect how to do, the plum blossom common disease and the control need to do? Next, the editor will take you to learn about it.

What to do with the long bugs of plum blossoms / chemical spraying

On the question of how to do the long insects of plum blossoms, first of all, we need to know which kind of insect pests are specific, and then deal with them. Generally, the most direct method is to directly use the corresponding control agents to spray and kill. In the following, there are specific pest control methods, you can understand.

1. Yellowish brown tentacle insect pest

This pest is yellowish in shape and is generally about 1.5cm in size. The pest also has a pair of brown wings, which are somewhat similar to moths, but relatively small in size. It usually slowly eats the leaves of plum blossoms, eventually causing the whole plum blossom to become a smooth rod.

Control method: when dealing with the pest of Dendrolimus punctatus, we can use 10% imidacloprid wettable powder 2500 liquid to spray it, as long as we find it first.

two。 Diamondback moth pest

The harm of Spodoptera litura and Dendrolimus punctatus to plum blossom is similar, both gnawing on the leaves, and this poisonous insect also has a lot of poisonous hairs on the human body, so it must be dealt with in time.

Control methods: when you encounter this kind of pest, it is best to deal with it in time when it is found. if it is too late to cause the leaves to be eroded, the loss will outweigh the gain. If we want to eliminate it, we can choose 5% Yitaibao emulsion 1500 times.

3. Peach red neck longicorn beetle pest

The pest has a black body and looks a bit like a cockroach, but it is relatively small, usually around 2.8-3.7cm. It mainly harms the trunk of plum blossoms, and some reddish-brown insect dung will appear on the damaged trunk, which we can pay attention to.

Control method: to control this pest, we can directly choose 2.5% Kung Fu EC 3000 times solution to directly spray the peach red neck longicorn beetle, and then disinfect the plant.

Common diseases of plum blossom and their control

1. Leaf roll disease

Leaf roll disease is a common disease and control of plum blossom, as the name implies, this disease mainly harms the leaves of plum blossoms, will make the leaves gradually shrink and curl, and in serious cases, a large number of leaves will fall off.

Prevention and control methods: when this disease occurs, it must be prevented and treated at the initial stage. If the event is prolonged, it will be difficult to cure it. We can choose 1.5% Zhiyiling EC 1000 times to spray and control the plant.

two。 Glue flow disease

Gummy disease is easy to occur when it is not watered, and it mainly harms the branches of the plant. Some brown crystal objects will appear on the branches at the initial stage of the disease, which will lead to the death of plum blossoms if left untreated for a long time.

Prevention and control methods: this disease is mainly caused by improper watering, you can refer to the plum blossom watering method to avoid the emergence of this disease. However, there is a need for prevention and treatment, at this time, we can use 50% carbendazim wettable powder 50 times solution to smear at the disease site for prevention and treatment.

3. Crown gall disease

Crown gall disease, also known as root cancer disease, mainly harms the rhizome of plum blossoms, when the disease will appear in the root of a nodular prototype object, the initial volume is smaller, with the passage of time will gradually become larger, serious will lead to the direct death of plum blossoms.

Control methods: for this disease, we can use 300-400 times of 402 for root irrigation treatment, generally use once every 7-10 days, and basically solve the disease after 2-3 times.

What about the growth of tea plum leaves? pest control of tea plum / 4 insect pests and 3 diseases

As a combination of camellias and plum blossoms, the beauty of Camellia is beyond doubt. Its beautiful leaves, gorgeous colors and charming fragrance are all beloved by people. However, due to some reasons, tea plum will grow insect disease, thus seriously affecting the ornamental, then tea plum leaf worm how to do? The following is the pest control of tea plum selected by the editor. Go in and have a look!

First, what to do with the growing insects in the leaves of tea plum, to determine the pests

Tea plum is very resistant, so it is supposed to be very difficult to get sick and insect pests, but if we do not raise tea plum according to the culture method, it is also normal for tea plum leaves to grow insects. At this time, we can not be in a hurry, but first determine the pests, and then spray for the use of medicine. Generally speaking, there are 7 kinds of diseases and insect pests of tea plum, including 4 insect pests and 3 diseases, specific symptoms and control methods, we go on.

II. Disease and pest control of tea plum

1. Aphids

An insect that infects tea plum, which parasites on leaves and absorbs juice, mainly harming young leaves and stems. Once aphids appear, they are dense and look very scary.

Control methods: when there are a small number of aphids, you can kill them manually, such as picking with needles or brushing them off with tools such as a brush; when there are many aphids, spray them with 2.5% fish rattan essential EC 1200 times.

2. Diamondback moth

One of the diseases and insect pests of tea plum, which usually occurs from June to October. The larvae of the insect will feed on the lower epidermis and mesophyll of the leaves, and in severe cases, only the upper epidermis is left; the adults of the diamondback moth are more harmful, and it can eat up the leaves, leaving only the main veins, seriously affecting the flower bud differentiation, flowering and ornamental of tea plum.

Prevention and control methods: in the initial stage, spray 50% fenitrothion EC 800x liquid, or use biological preparation Bt water agent 1000 times liquid spray in cloudy days, the prevention and control effect is good. If it is in winter, you can dig the cocoon in the soil around the tea plum, break it or knock the cocoon off the tree trunk.

3. Scale insects

Another pest of tea plum, which mainly harms young leaves and sucks the juice of flowers. Symptoms of damage: tea plum leaves from green to gray-green, and finally to yellow, which is also one of the reasons for tea plum leaves yellowing; in serious cases, the branches and leaves are covered with shell insects, resulting in the death of the whole plant.

Control methods: when there are few shell insects, rinse with water, or wipe the diseased plants with liquor, vinegar, alcohol, washing powder, etc., have a certain curative effect; scale insects for a long time, use 550% marathon, 40% dimethoate 0.1% solution to kill in turn, a few times will be effective.

4. Longicorn beetles

The insect is divided into tea longicorn beetles and tea black tarsal longicorn beetles, both of which are harmful to tea plum. The former mainly eats the roots of tea plum and the branches near the ground, while the latter damages the branches from the bottom up, causing the branches to swell and wither and die.

Prevention and control methods: after the discovery of longicorn beetles, adults can be caught manually, or 800 times of 50% fenitrothion EC can be sprayed, or green green buds can be sprayed to kill adults.

5. Anthrax

This disease is one of the common diseases of tea plum, which usually occurs from June to July and mainly harms adult leaves. Symptoms of the disease: water-stained green-brown disease spots appeared on the edge and tip of tea plum leaves, and then expanded into a layer of small black spots arranged in irregular stripes to spread throughout the leaves, resulting in the loss of tea plum leaves.

Prevention and treatment methods: find the above symptoms, remove the diseased leaves and burn them in time to reduce the source of the disease; at the initial stage of the disease, spray 2-3 times with anthrax Fumei or 75% chlorothalonil 600 times, or spray 1-2 times with 12% green copper emulsion during budding and leaf development.

6. Leaf spot

One of the main diseases of tea plum, in the environment of high temperature, high humidity and poor ventilation, the leaves of tea plum are easy to be infected with leaf spot disease. Symptoms: the leaves appear yellowish and reddish yellow spots, and then enlarged into a round or oval shape.

Prevention and treatment methods: if the above disease occurs and a small number of diseased leaves are found, it should be removed and burned in time to reduce the source of the disease; when the disease is serious, it can be prevented and treated with 1000-1500 times of demulsified oil, spraying 25% 2-3 times every 7-15 days, and it will be effective after a few times.

7. Coal pollution disease

One of the diseases and insect pests of tea plum, it generally occurs in the environment of high temperature, high humidity and poor ventilation. Symptoms: the leaves and branches of Camellia oleifera are covered with a layer of black soot, which affects the photosynthesis and respiration of the leaves, causing poor growth and early defoliation.

Prevention and treatment methods: when the above symptoms are found, 50% carbendazim 600 times solution or 70% mancozeb 600 times solution is sprayed in turn, and the effect can be seen after 2-3 times.

How to control the pest of plum blossom

The common pests of plum are plum caterpillar, aphid, insect, Japanese tortoise wax scale, cicada, big coir moth and so on.

(1) plum caterpillar. The plum caterpillar has a blue-gray head, two black spots, a yellow-white topline on its back, two yellow stripes on each side of the body, and many yellow-white long hairs, usually 5 centimeters long. The larvae of this insect often spin silk on the twigs and act as gray-white canopy nests that feed on the new buds and young leaves of plum blossoms, and when they grow up, they are scattered in the whole plant and nibble away at the leaves, which can be eaten up in serious cases.

Control method: it can be sprayed 1000 times to kill the borer when the insect is young.

(2) aphids. Aphids mainly harm young stems and leaves, which are dense in clumps, suck plant nutrients, and often appear mucus in the damaged parts, which makes the leaves change color. Wrinkle, reverse roll, wither, serious can cause the death of the whole plant.

Control method: it can be sprayed with 1000 times the aqueous solution of omethoate, or it can be sprayed with 80% dichlorvos plus 2000 times water solution, which can be eliminated after 2-3 times spraying.

(3) Entomophore. The scale worm is also called shell worm or bulbous scale, and the adult is nearly spherical. At first, the shell is soft and yellowish brown, then it becomes dark brown, and there are many yellow-white and black-brown horizontal lines on the body surface. Often start activities in early spring to absorb plant sap. The leaves of the injured plants yellowed and withered and fell off. At the same time, the sugar excreted by shell insects can also induce other diseases, affecting plant growth and budding and flowering.

Prevention and treatment: artificial scraping and drug spraying can be used: the drug can be sprayed with 1500 times of dichlorvos EC and 1500 times of water, or 60% of wettable dimethoate powder plus 1200 times of water.

(4) Japanese tortoise wax scale. This insect can harm dozens of flowers, and its nymphs and females suck sap on leaves and branches, often causing plant withered leaves and yellow leaves or coal disease. In the Yangtze River basin, the female lays a large number of eggs in mid-May and hatches in mid-June. Male adults pupate and Eclosion in large numbers from late August to early September. This insect can transmit the worm to other places along with the transportation of worm-carrying seedlings.

Control methods: (1) if a small number of plants are damaged, they can be scraped off the branches manually. (2) after a large number of nymphs hatch, 40% omethoate EC 1500 times or 50% fenitrothion EC 1500 times can be sprayed and the effect is better. (3) use red-spotted ladybugs to prey on the killed flowers and trees. (4) when introducing seedlings, we should check carefully and find that the larvae are parasitic and should be scraped off thoroughly.

(5) cicadas. This insect can harm plum blossom, sweet-scented osmanthus and other flowers. When the nymphs suck the sap from the roots in the soil, the adults are more harmful and often cause branches to die.

Control methods: ① should pay attention to searching and killing newly unearthed nymphs and newly emerged adults. ② can burn a fire near the tree trunk on a hot night; at the same time, it vibrates the branches to set the insects on fire and kill the insects that fall near the fire. ③ uses sticky gluten washed from the dough to put it on the head of the bamboo pole and stick to catch adults. In the most harmful season, ④ cut off the spawning branches and burned them in time.

(6) Dasuo. This bug, also known as debt-avoiding worm, is called "hanging ghost" in folk. It is a pest that harms many kinds of flowers. When the plant appears this worm, it can be seen that the leaves are eaten into holes or gaps by its larvae, and even all the leaves on the branches can be eaten up, leaving only veins, which is very harmful.

Control method: the protective capsule of ① is obvious and can be removed at any time to kill its larvae. In the middle of July, ② was sprayed with 1000 times of 90% trichlorfon or 1500 times of 80% dichlorvos EC.