Some people say that growing coriander doesn t require pest control, is that true?

Coriander likes cold and is a very hardy vegetable that is not resistant to high temperatures. Coriander is generally not planted in the summer, because cilantro grows slowly above 20 and stops growing when it is more than 30. Moreover, the seeds of coriander are more than 30 and almost will not germinate, it has the characteristics of heat dormancy, and the germination rate of coriander seeds without low temperature treatment is very low.

As a green leafy vegetable, although coriander has a short growth period and fewer occurrences of pests and diseases, it is impossible to prevent and control pests and is unreliable. <>

The main insect pests of coriander are:

1, whitefly whitefly is familiar to everyone, a disgusting little white moth, hidden on the back of crop leaves when harmed, sucking the juice of coriander with stinging and sucking mouthparts, often causing the leaves to fade green, yellow, plant growth weak, wilting, its secreted feces are sticky, easy to cause coal stain disease, affect photosynthesis.

and its commoditity.

For the control of whitefly, yellow plate trapping and imidacloprid can be used.

Bifenthroid, fumigants, etc. fumigation.

2. AphidsAphids, also known as greasy insects, honey worms, etc., are a kind of pests that often occur on coriander, sucking coriander juice and causing plant malnutrition.

The young leaves curl and turn yellow, and the parasitism of the coal pollution bacteria secreted affects photosynthesis and can also spread viral diseases.

The control method is basically the same as that of whitefly.

3. Tea yellow mite and red spider Tea yellow mite and red spider are also stinging and sucking the juice of coriander, causing plant deformity and slow growth, small and hard leaves, yellowing of the back of the leaves, rolling down the leaf margins, dying at the growth point, and no new leaves. Tea yellow mites reproduce quickly.

For the control of this insect, it is mainly the use of drugs, such as avermectin.

Liuyangmycin, etc.

4. The harm range of spotted divers is quite wide, especially in the coriander cultivated in the facility, which can cause serious yield reduction if it is not controlled in time.

For the control of this insect, it can be destroyed by cleaning the field and destroying it centrally. Drugs can be used with mycetamine, avermectin, cypin and so on.

Finally, there are underground pests, which use manure that is not fully decomposed, and is cropped all year round.

etc., will lead to grubs.

The occurrence of underground pests such as mole crickets directly bites off the rhizome and causes the whole plant to die. The control of underground pests is mainly not to apply raw manure and trichlorfon.

Mix wheat bran as bait to poison and kill.

Therefore, it is unreliable to say that coriander does not control pests and diseases. Do you think that's the truth?

No, coriander is also very easy to cause insect infestations, and you should also water him more and fertilize it at ordinary times to let it remove diseases.

This is indeed the case, because the taste of coriander is very characteristic and very lethal for those who are harmful.

Although coriander is not very selective to the natural environment, it can cause corresponding pests and diseases in the process of rain, irrigation and insect migration. Drugs such as carbendazim, sclerotium, methyl tobuzin and manganese octane potassium are commonly used drugs for the prevention and control of coriander pests and diseases, and it is also necessary to regulate soil moisture and humidity. Such as sclerotinia sclerotinia disease, leaf blight, root rot, etc., strengthening crop rotation will greatly reduce the occurrence of diseases.

Drug prevention and control can choose low-toxicity pesticides such as ammonium dyssen, zecze, Bordeaux liquid, chlorothalonil, carbendazim, and oxazin.

Coriander is an adaptable vegetable, it is not strict with soil requirements, and it can be grown in general soil. However, the soil is loose, the soil layer is deep, rich in organic matter, and the plots with strong water and fertilizer retention are more conducive to its growth. Before raking the ground, apply some farm fertilizer, and then rake it flat and fine, and make furrows.

Tea yellow mite and red spider also suck the juice of coriander, causing plant deformity and slow growth, small and hard leaves, yellowing of the back of the leaves, rolling down the leaf margins, dying at the growth point, and no new leaves. Tea yellow mites reproduce quickly. For the prevention and control of this insect, drugs are mainly used, such as avermectin, liuyangmycin, etc.

Aphids are also the main culprits of coriander virus disease, so they should be used to control coriander seedlings when they are leaves, which can be carried out once every 7-10 days, 2-3 times in a row, which can effectively reduce the spread of aphids and reduce the occurrence of coriander virus disease. Growers who specialize in growing coriander on a large scale will use some chemical agents to control this pest. For example, use:

Spray 5000 times of 10% acetamiprid, or 4000 times of 50% pymetrozine EC to treat the infested coriander. If coriander is grown in greenhouses, there are also smoking aphid cocoon wasps to control this aphid.

The prevention and control of aphids is mainly prevention, and the main measures include timely removal of weeds and deep ploughing of the land. Coriander is a shallow-rooted leafy vegetable, the root system is not developed enough, and the ability to absorb fertilizer and water is relatively weak; Coriander needs more water to grow, that is, it likes water, but its ability to tolerate drought and waterlogging is relatively poor, and the soil that needs to grow is relatively fertile and has good air permeability.

Prevention and treatment through drugs. You can spray some pesticides inside the coriander, which can kill some pests.

The first disease is called "sclerotinia sclerotiorum". **For this disease, the soil must first be disinfected. Then, we have to spray a thousand times the sclerotinia once, and then spray again after ten days, about the third time around the beginning of spring.

In addition, it is necessary to pay attention to environmental control, such as strengthening ventilation and so on, which have a good effect on reducing diseases.

The second is "leaf blight", which we can also see from the name that it is the leaf that harms it. Once the disease occurs, it spreads very quickly, so the damage caused is also large. When the leaves are infected, they turn yellowish-brown, and if the temperature is too high, it will cause widespread decay.

To deal with this disease, we can use carbendazim 600 to 800 times the agent to prevent and treat it. There is also to strengthen management, such as paying attention to ventilation, controlling the amount of watering, and so on.

Be sure to spray some pesticides in time, so that you can kill a lot of pests and diseases. And the effect of these pesticides is also very good, and it will not affect the quality of coriander.

This practice is unreliable, even if the occurrence of coriander pests and diseases is less, but it cannot be controlled.

This is not reliable, and coriander is also susceptible to insect infestations, and once it suffers from insect infestations, then the yield of coriander will be greatly reduced.

This is not reliable, and coriander also needs to be protected from pests and diseases, so as to increase the yield and make the coriander develop better and better.

Pay attention to the selection of varieties, pay attention to the condition of the soil, deal with the problem in time, pay attention to watering, pay attention to the situation of fertilization, and spray pesticides on time for prevention and control.

First of all, when planting, we must choose the soil is more fertile and broad land, and we must use farmhouse fertilizer when fertilizing, do not use the fertilizer bought outside, and often water the plants, but also to prevent the occurrence of pests and diseases, if there are small insects, then we must spray insecticides in time.

The common pests and diseases of coriander include sclerotinia sclerotinia disease, virus disease, spot blight, and root rot, which must be prevented in advance, and the planting land should be selected as rotation land, and the soil should be disinfected.

Many villages with good soil moisture will use Xianglai as a key cultivation target, and like leeks, Xianglai is traded to a particularly wide audience, and many people love to eat coriander. Xianglai is an annual or annual woody plant, which has a unique fragrance and spicy taste, but has excellent practical effects on the maintenance of body functions, such as clearing heat and detoxifying, conducive to urination and promoting digestion. Xianglai is a season of vegetables and fruits, generally speaking, the total yield of 1 mu is more than 1000 catties is not a problem, and the high can reach about 2000 catties.

Why don't many of the rural Shanlai have such high economic benefits? The key is closely related to the fine management of planting management methods. Pandan is a drought-resistant, growth and development adaptable vegetable and fruit, but it does not mean that extensive planting can increase yields and harvests.

Xianglai is a humid and hot spring shade-tolerant crop, can survive in ultra-low temperature, continuous high temperature conditions, but the most suitable temperature for its growth and development or 17 20, to complete the increase in yield, the first thing to choose the right soil layer and pay attention to temperature and humidity records to adjust the supervision. The celery sown in the plan can be carried out at the same time as the seedlings are plucked, and since the vanai is a leafy vegetable, it is <>

It is not recommended to spray all hormone drugs of the growth agent and herbicide, according to the development requirements of different periods of time to flush a certain number of vegetables and fruits special compound fertilizer, Chunxianglai because of the initial temperature of planting is wet and cold, according to the growth and development status can be washed with the compound fertilizer 2 to 3 times, the first time can be Xianglai seedlings grow to 6 to 7cm, 1 mu according to the amount of more than 10 pounds, evenly sprinkled on the road surface and then watered, the second water-soluble fertilizer can be carried out when Xianglai grows to 12 to 15 cm, The number of 1 mu of water-soluble fertilizer can be understood in 15 to 16 catties, the amount of fertilizer application must look at the fertilizer on the vegetables, can not pursue the perfect production amount of too much, the first to carry out crop rotation, the rotation of stubble is best with tomato or long beans rotation.

In the growth and development process of Xianglai, it is most likely to produce Xianglai soft rot, and the main manifestation of soft rot is that on the coriander stalks and coriander leaves, it first occurs in a water-soaked state, and then becomes a light brown dent with uneven spotsEventually, it will rot and stink. If you find that there are signs of soft rot in Xianglai, immediately dig up the diseased plant by root, and sprinkle quicklime powder around the root to avoid the spread of the effect, it is best not to water when the disease occurs to avoid the spread of chemical fertilizer prevention, you can use 72% agricultural machinery streptomycin sulfate soluble granules 3000 to 4000 times liquid every other week, continue to spray 2 times. 10 days before the sale, all fertilizers cannot be sprayed.

If coriander planting wants to have a high yield, it is necessary to ensure the moisture of the soil of Xiangyu Hengcai, and only enough Qingbi to do water supply can make coriander high-yield and high-quality Huikai; When controlling pests, some pesticides can be added appropriately, and it is best to use some low-toxicity pesticides.

The soil must be very fertile, balanced and fertile, the pH should be suitable and the quality should be good, and the germination should be properly promoted, and then more watering and fertilization, which requires pure samples to be high-yielding; Continue to spray disinfectants and nutrient solutions, and then do a good job of scientific management.

When planting, it is necessary to choose some areas with fertile soil and sufficient water, and it is also necessary to do a good job of pest and disease prevention on a regular basis; First of all, in a specific period, it is necessary to carry out the corresponding infiltration and effective insecticide work, spray some insecticides to achieve the effect, or clean up the miscellaneous code grass and destroy its living environment.

Because of the spicy aroma of coriander, there are few insect infestations except for a small number of aphids. The main diseases are virus diseases and spot blight.

The prevention and control methods are as follows:

1) Apply biological, physical and ecological methods to control pests and diseases.

The use of onions and garlic in the front stubble can prevent early blight.

The use of deep ditch and high moisture, timely drainage after rain, to prevent flood irrigation, can control the occurrence of spot blight and other diseases.

2) Pharmaceutical prevention and control.

The dust method and fumigation method are preferentially used in the protected area, and spray prevention and control can also be used in dry and sunny weather, and attention should be paid to rotating drugs and rational mixing.

Viral diseases. It can be sprayed alternately with potassium permanganate 800 times or virus K1000 times.

Spot blight. At the initial stage of the disease, spray with 1000 times of 58% methalin wettable powder or 600 times of 75% chlorothalonil wettable powder, or 200 300 times of 50% sulfur suspension.

Aphids are controlled with 500 1000 times of Sophora sophora plant insecticide, or 1500 times of 10% imidacloprid. Sheds per 667 m2

Use 500 grams of aphidcarb smoke agent to close the shed in the evening and light it for fumigation overnight.

Summary. In the process of cultivation and management, coriander will encounter various pests and diseases, such as blight, soft rot, sclerotinia disease, black rot, powdery mildew, etc., which will cause serious losses to coriander production, so we should pay attention to it. 1. Pharmaceutical prevention and control of blight.

At the initial stage of the disease, 1500 times of 5% Jinggangmycin aqueous solution or Pulik aqueous solution was used; 2. Pharmaceutical prevention and control of leaf spot disease. At the beginning of the disease, 75% chlorothalonil or 50% polytrimacarb wettable powder 1000 times liquid was sprayed, once every 7 days, sprayed 2 3 times in a row, and the drug was stopped 7 days before harvesting; 3. Pharmaceutical prevention and control of soft rot. In the early stage of the disease, 72% agricultural streptomycin, soluble powder or new phytomycin 3000 times can be sprayed, sprayed 2 or 3 times in a row, and the drug should be stopped 3 days before collection; 4. Pharmaceutical prevention and control of sclerotinia sclerotinia

At the beginning of the disease, 50% Suclin or Promethine or 50% Nonglilin wettable powder can be sprayed 1000 times, once every 7 days, sprayed 3 or 4 times. The shed can be smoked for 12 hours per square meter with 15% Pythium smoke agent or 45% chlorothalonil smoke agent; 5. Pharmaceutical prevention and control of black rot. At the initial stage of the disease, 400 times of 36% thiophanate-methyl suspension or 250 times of 10% double-effect aqueous agent were sprayed, once every 7 10 days, and even prevented.

In the process of cultivation and management, coriander will encounter various pests and diseases, such as blight, soft rot, Wuzi sclerotinia disease, black rot, powdery mildew, etc., which will cause serious losses to coriander production, so we should pay attention to it. 1. Pharmaceutical prevention and control of blight. At the initial stage of the disease, 1500 times of 5% Jinggangmycin aqueous solution or Pulik aqueous solution was used; 2. Prevention and control of leaf spot disease.

At the beginning of the disease, 75% chlorothalonil or 50% polytrimacarb wettable powder 1000 times liquid was sprayed, once every 7 days, sprayed 2 3 times in a row, and the drug was stopped 7 days before harvesting; 3. Pharmaceutical prevention and control of soft rot. In the early stage of the disease, 72% agricultural streptomycin, soluble powder or new phytomycin 3000 times can be sprayed, sprayed 2 or 3 times in a row, and the drug should be stopped 3 days before collection; 4. Prevention and control of sclerotinia sclerotinia with missing agents. At the beginning of the disease, 50% Suclin or Promethine or 50% Nonglilin wettable powder can be sprayed 1000 times, once every 7 days, sprayed 3 or 4 times.

The shed can be smoked for 12 hours per square meter with 15% Pythium smoke agent or 45% chlorothalonil smoke agent; 5. Pharmaceutical prevention and control of black rot. At the initial stage of the disease, 400 times of 36% thiophanate-methyl suspension or 250 times of 10% double-effect aqueous agent were sprayed, once every 7 10 days, and even prevented.

2 3 times; 6. Pharmaceutical prevention and control of powdery mildew. At the beginning of the disease, it was sprayed with 3000 times of 10% Shigao water-dispersible granules, or 200 times of 200 times of Wuyi Wuyi Shuipeng reverterant water, or 3000 times of 25% dilito.