How to effectively control citrus leaf miner, and what drugs are used to control citrus armyworm?

With avermectin, spray new shoots 1 time every 7 10 days for 5 to 6 times.

On June 15, it can be sprayed for prevention.

Prevention and control methods: 1. Wipe the buds and control the shoots, and put the shoots in a unified manner. Low temperature is the dominant factor influencing the occurrence of leaf miners in winter and spring, and food is the dominant factor affecting the occurrence of leaf miners in summer and autumn, that is, mainly citrus shoots.

Therefore, the fundamental measure to control the source of insects should be to wipe the buds and control the shoots, and unify the shoots. During the shoot release period, it is necessary to seize the low peak period of the occurrence of citrus leaf miner, mainly from Xiaoman to Miscanthus (late May to early June) to release summer shoots, and from the summer heat to the beginning of autumn (late July to early August). Apply fertilizer three times when putting shoots, you can apply Bika balanced fertilizer + foliar fertilizer, respectively 15 days before the shoots to promote the tip fertilizer, 2 to 3 days before the shoots to apply the attack tip fertilizer, 3 to 4 days after the shoots to apply the strong tip fertilizer.

When putting the shoots, the principle of removing the zero and leaving the whole, going to the early to keep the full, and going to the less and leaving more is the principle of putting the tips. The standard of shoot placement is that when 70%-80% of the plants in the whole garden are pulled, and 70%-80% of the branches of each tree are pulled, they will be wiped at one time, and then the shoots will be placed.

Second, the prevention and treatment of pharmaceuticals. It is necessary to catch three comprehensive pesticide control measures based on citrus leaf miner moth. The first spraying is 3-4 days after the germination of new shoots (tip length is not more than 1 cm), mainly to control citrus leaf miner moth, citrus aphid, citrus psyllid, citrus butterfly.

The second spraying was 5-6 days after the first spraying, mainly citrus leaf miner moth, citrus aphid, and citrus butterfly. The third spraying was 7-8 days after the second spraying, mainly to control citrus leaf miner moth, citrus butterfly and citrus canker. At the same time, it can be used as a control index for citrus leaf miner when the damage rate of citrus shoots reaches 20%.

The agents for the control of citrus leaf miner moth include 1500-2000 times of 98% Bataan wettable powder, 1500-2000 times of 24% Wanling EC, 3000-4000 times of 20% chlorpyramide No. 1 suspension, 20% good winter EC 2000-3000 times, deltamethrin 3000-4000 times, and 3000-4000 times of kung fu EC. At the same time, the adults of the citrus leafminer moth inhabit the grass near orchards or nurseries during the day and come out at dusk. Therefore, the control of leaf miner moth should also be cleaned frequently around the orchard or nursery, and spraying should also be carried out at dusk, which can get twice the result with half the effort.

Different types of noctuidae are planted with different pesticides.

For example, to control Spodoptera exigua, starting in late August, it is better to spray the canopy with 1000 1500 times of 50% Kulong EC (50% profenofos) or 1500 2000 times of 1500 2000 times of centaurex emulsifiable concentrate (cyfluthrin).

1. The harm of Spodoptera exigua.

Spodoptera exigua flies to the orchard at night as an adult to harm the fruit, and the adult worms are divided into three categories according to the structure and feeding ability of their mouthparts: 1. Fruits that like to eat healthy fruits: such as Spodoptera exigua, dead leaf moth, etc., the ends of their mouthparts are sharp and keratinized, and they rarely suck rotten fruits.

2. Healthy and rotten fruits and food: such as Spodoptera exigua, the ends of its mouthparts are sharp and hard. 3. Likes to eat rotten fruits:

For example, Spodoptera exigua and Spodoptera exigua have soft mouthparts and cannot pierce the peel. Usually when the citrus fruit is nearly ripe, the adult punctures the skin with its mouthparts and inserts it into the flesh to suck the juice. The prickly holes of the damaged fruit often show different harmful conditions, the worst is to cause the fruit to rot and fall off, the light is only a small hole on the surface, and the internal flesh is spongy or rotten, and the early harm is not easy to find, and it often causes rot in storage and transportation.

2. Citrus control method of Spodoptera exigua.

1. Avoid planting larval host crops such as cotton, fennel, tobacco, and peanuts in and around citrus orchards.

2. Frequency vibration insecticidal lamps are placed in citrus orchards to trap and kill adults (late June to September), which can reduce the number of fruit sucking Spodoptera exigua.

3. Hanging around the citrus tree with fragrant aromatic paper also has a good avoidance effect, generally 8 10 sheets of plants, hanging at night, retracting and sealing during the day, and can be used continuously for a certain time.

4. Before the citrus fruit is damaged or in the early stage of the damage, the melon can be cut into small pieces and hung in the garden to catch the adult insects at night. During the fruit damage period, the rotten fruit is piled up in the garden to attract adult insects to catch.

5. The prevention and control of pesticides can be sprayed with 800 times of 80% dichlorvos emulsifiable concentrate or 1000 1500 times of Baishude.

In the usual planting management process, appropriate topdressing of water-soluble fertilizer can supplement nutrients and enhance resistance.

Citrus leaf miners on fruit trees can be sprayed with deltamethrin EC or Uranus EC deltamethrin EC and diluted on the branches and leaves, once a week, 3 sprays. In early summer, you can do a good job of insect pest control in advance, and in the usual maintenance, the fruit trees can be properly pruned to improve the disease resistance of the trees.

Many people will breed citrus at home, if you find that there are citrus leafminers on the fruit trees, what medicine is used, you can dilute deltamethrin EC or Uranus EC or deltamethrin EC in proportion, spray on the surface of the affected leaves, spray once a week, and spray 3 times in a row to have a significant effect.

In fact, the adult insect of citrus leaf miner is not harmful, but its larvae have a strong destructive power, in summer and autumn when the temperature is high and rainy, it is the high incidence period of insect infestation, its larvae feed on the nutrient juice in the branches, leaves and fruits, if not timely, it will seriously affect the growth and yield of fruit trees.

In early summer, you can do a good job of insect pest control in advance, otherwise to the growth period of fruit trees, the number of insect pests will be greatly increased, in early summer you can grow earlier tender slightly removed, and properly control the number of times of watering and fertilizer, can achieve the effect of insect control, but also promote the germination of branch buds.

In the usual maintenance, the fruit trees can also be properly pruned, so that the plants can better receive light, ensure that the inner fruit trees have good air circulation, can improve the disease resistance of the trees, watering should not be too frequent, so as not to cause the soil to be too wet, easy to cause diseases, can be watered in accordance with the principle of seeing dry and wet.

Citrus is one of the main fruits in our country, but citrus is often attacked by pests in the process of citrus planting, and the most headache is the citrus leaf miner tour.

Citrus leaf miner moth is an extremely destructive pest, it will lay eggs in the leaves of citrus trees, and the hatched larvae will eat in the leaves, and even cause the leaves of citrus trees to wilt and break branches, which directly affects the quality and yield of citrus. Therefore, killing citrus leaf miners has become an important problem that must be faced in the process of citrus planting.

In the field of sterilization and insect control, special drugs are a common solution. And for citrus leaf miners, there is also a special drug - "Su Yagong".

"Suyagong" is a kind of agent composed of two active ingredients, calyptone and imidacloprid, both of which have a broad-spectrum insecticidal effect, and can form a long-lasting protective film in the leaves of citrus trees, which not only has a killing effect on citrus leaf miners, but also prevents them from re-attacking.

Compared with other medicines, "Su Yagong" has the advantages of less dose, good effect and long duration of effect. And it is simple to use, only need to spray the agent on the leaves of the citrus tree, and will not cause any damage to the tree.

In short, the "Su Yagong" mill may be an effective, safe and environmentally friendly citrus leaf miner control agent, which can effectively help citrus producers kill pests and ensure the quality and yield of citrus.

Isoprocarb is a broad-spectrum insecticide that can be used to control a variety of pests, such as citrus huanglongbing, cicada, citrus leaf miner, etc. Among them, citrus leaf miner moth is a pest that seriously harms citrus infiltrate round trees, which will lay eggs in the leaves of citrus trees, and the larvae feed on the leaves, causing the leaves to turn yellow, dry up and fall, and ultimately affect the growth and collapse of citrus. Isoprocarb can be effectively controlled by spraying and other methods for citrus leaf miners, but it is necessary to pay attention to the method and dosage of medication to avoid adverse effects on the environment and plants.

At the same time, it is necessary to choose the appropriate control time and measures according to the growth stage of citrus trees and the occurrence of pests to achieve the best control effect. It should be noted that due to the different occurrence of citrus leaf miner moth in different areas and seasons, it is also necessary to combine the specific situation for control, and cannot simply rely on one control method or agent.

The adult emergence stage and the young larval stage of Citrus leafminer moth are the appropriate control periods, and the control of adult worms can be carried out in the evening. To control larvae, it is advisable to use medicine in the afternoon on a sunny day. It can be sprayed with 10% dichlorophenothrin 2000 3000 times, or deltamethrin 2500 times, or 25% insecticidal aqueous agent 500 times (insecticidal and eggicidal effects are good), or 25% divitamin wettable powder 500 1000 times, or 5% imidacloprid emulsifiable concentrate 1500 times。Spray 1 time every 7 10 days, 3 sprays 4 times in a row.

Citrus leaf miner moth harms plants such as citrus, kumquat, lemon, February orchid, mandarin orange, four-season orange, rock sugar orange and so on. It is a serious citrus pest. Leaf miner larvae damage young shoots and young leaves, and in some cases can damage the fruit.

The larvae burrow under the epidermis of the leaves to feed on mesophyll tissue, creating a sinuous passage and leaving fecal threads in the middle. Therefore, it has the common name of ghost drawing symbol and drawing worm.

1. Agricultural prevention and control Erase the sporadic summer shoots and autumn shoots, so that they can be extracted in a unified and centralized manner, and cut off the source of insects. At the end of the adult oviposition, that is, when the number of eggs begins to decline, the autumn shoots can be left to reduce the damage of the autumn shoots. Half a month before the shoots, fertilizer and water management should be strengthened to make the shoots neat and shortened to the damage period.

2. Pharmaceutical control The initial stage of larval hatching is the appropriate period for prevention and control; Young trees start to control leaf miners when they are 1-2 cm from summer shoots, and then again after 15-20 days; The effective agents are: 20 carbosulfan 1000 1500 times, flufluthrin 1500 2000 times, etc.; The fruiting tree erases the summer shoots.

3. Protection and utilization of natural enemies mainly include parasitic wasps and lacewings.

Answer: If you want to control citrus leaf miners, you need to spray in time, you can use deltamethrin EC, emamectin, benzoate water powder powder, spraying should insist on spraying, about 5-7 days or so to spray the drug once, to use 2 to 3 times in a row.

Summary. Citrus tree leafminer moth danger can be used kung fu emamectin salt, tetrachlorantraniliprole, bollworm karyopolyhedrovirus, with indoxacarb, chlorantraniliprole, thuringiensis, Kangkuan and other alternating sprays.

Citrus tree leafminer moth danger can be used kung fu emamectin salt, four deficiencies of chlorantraniliprole, cotton bollworm karyotype polyhedrovirus, with indoxacarb, chlorantraniliprole, thuringiensis, Kangkuan, etc.

What is the best medicine for canker in citrus trees.

In the early stage of citrus canker, you can use 150-300 times of Liangguo Antan pure + 1000-1500 times of garlic oil to spray disturbing the fiber mist, it is recommended to use the drug 2-3 times, and use it once every 7 days or so, so that the slow imitation can effectively prevent and control the canker disease of citrus trees.

What medicine to use in the later stage.

The above drugs can be used, regardless of the early and late stages, but the early stage is better to prevent and treat this loss, the concentration of the drug is lower, the earlier the medication, the easier the ulcer disease.