Potato underground pests are more serious, which drugs are better to choose?

1. 400 to 500 grams of 50% phosphine emulsion per mu, 3% phosphine particles to 2 kg, mixed in 50 kg of fine soil or sand, applied into the furrow during autumn ploughing or before sowing, raking or sowing soil, can effectively prevent and control the occurrence of underground pests. 2. In the peak period of adults, on crops or trees where pests are concentrated. Spray 100 times of 50% octan-sulfur emulsion, or 1000 times of 90% crystal trichlorfon, or 300 times of deltamethrin (trimethrin) emulsifiable concentrate, or 3000 times of 20% fenmethrin emulsifiable concentrate.

The commonly used pesticides for the prevention and control of grubs mainly include aldicarb, carbofuran, and phosphine. The commonly used drugs for the prevention and control of ground tigers are diaziphos emulsifiable concentrate or fenvalerate emulsifiable concentrate for surface spraying.

Native potatoes often form holes after underground pests bite potato tubers, which not only directly affect the yield and quality of potatoes, but also create conditions for the invasion of pathogenic bacteria, which can easily lead to potato rot. The underground pests of potatoes mainly include grubs, grubs, pinworms and ground tigers, which can cause certain harm to the yield and quality of potatoes.

According to Liu Fang's previous control measures, it is suggested that when sowing potatoes, trichlorfon powder can be poured into fine soil to make poisonous soil, which can be sown in the ditch after stirring evenly, and can be used as fertilizer when ploughing, and can be poisoned and killed underground pests at the seedling stage; Or spray the above-mentioned pesticides directly on the roots of seedlings during the cultivation period to directly poison underground pests and prevent damage to seedlings.

Octothion EC can also be used for root irrigation and control, and the roots of each plant are watered with medicinal solution. Root irrigation has a certain control effect on underground pests, especially the first-instar larvae, which can not only reduce the harm of pests in the current year, but also effectively reduce the occurrence of pests in the next year.

Small-area control can be done by frying millet, soybean cake, and bran, or boiling and drying corn until it is semi-dry, and then dissolving trichlorfon in an appropriate amount of warm water to form a medicinal solution. It can also be dissolved in a ratio of 1:5 with dichlorvos and water, evenly sprayed on chopped grass such as gray cabbage and echinacea with a sprayer, divided into small piles at night, and placed in the potato field to trap and kill the larvae of underground pests.

Growers know that pests such as lepidopteran adults, crickets, and ground tigers are nocturnal and phototaxis, which can be used to trap and kill. Adults trap and kill at night. For pests with weak activity or suspended animation, manual killing can be carried out.

Some underground pests also have chemotaxis, and sweet and sour wine can be used to trap and kill underground pests, reduce the number of eggs laid by adults, and reduce the number of larvae. The method of booby-trapping sweet and sour liquor is pressed with wine and vinegar syrup water 1:4:

Add a little trichlorfon crystals in a ratio of 3:2, mix well, put it in a pot, place it in the field, m off the ground, add 1 2 sweet and sour solution every 5 days, and replace it with a new one every 10 days.

In the case of pests, most of them choose to spray with pesticides and choose to use chemical control methods for treatment.

For small-area control, you can use millet, soybean cake, bran fried yellow and stir-fried, or boiled and dried until semi-dry, and then put trichlorfon into an appropriate amount of warm water to dissolve into a medicinal solution. You can also use dichlorvos and water to dissolve in a ratio of 1 5, spray it evenly on chopped gray cabbage, spiny cabbage and other grasses with a sprayer, divide it into small piles at night and put it in the potato field to trap the larvae of underground pests.

Summary. 1. The main pests and diseases of potatoes.

Based on my many years of experience in potato (potato) cultivation, the pests and diseases that this crop often encounters are ground tigers, snails and grubs.

Second, the main response measures of these pests and diseases.

1) Ground Tiger.

For pests and diseases such as tigers, you can use 50% diaziphos EC 2000 times or 20% fenvalerate EC 1500 times to spray potatoes, the effect is the most obvious.

b) Grubs. For grubs, I recommend using one of the drugs of aldicarb (aldicarb, Shennongdan), carbofuran and phosphos.

c) Snails. For snails, this insect can be sprayed with phosphine or methylisosulfonate, which will be better.

What are the specific drugs for controlling underground pests in potatoes?

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1. The main pests and diseases of potatoesAccording to my many years of experience in growing potatoes (potatoes), the pests and diseases that are often encountered in this crop are ground tigers, snails and grubs. Second, the main countermeasures of these pests and diseases (1) for the ground tiger, you can use 50% diazinphos emulsifiable concentrate 2000 times or 20% fenvalerate emulsifiable concentrate 1500 times liquid to spray potatoes, the effect is the most obvious. (2) Grubs: For grubs, I recommend using one of the drugs of aldicarb (aldicarb, Shennongdan), carbofuran and phosphos.

3) Snails: For snails, insects can be sprayed with phosphine or methylisosulfonate, and the effect will be better.

How to use phosphine?

1000-2000 times solution.

Sorry, I forgot to play the proportions.

The special drugs for the prevention and control of potato underground pests include fenvalerate, phosphine and so on. The special drugs for potato underground pests include phosphine and furfur. Pesticides such as imidacloprid, methyl isosulfonate granules, phosphine granules, phosphine octathion granules, and phosphine emulsifiable concentrate can be used for underground pests.

Common underground pests include root maggots, ground tigers, mole crickets, grubs, needleworms, etc., and the pesticides used in different situations are different.

Potato underground pest control should be controlled by sprinkling chlorpyrifos granules into the ridges of the field before land preparation.

Agricultural control: intensive farming, weed elimination, irrigation, crop rotation; Physical and artificial control: artificial trapping, light trapping, sugar liquid trapping, grass trapping; Biological control:

Bacillus lactis was cultivated and inoculated in the soil to cause death to grubs; Chemical control: It can be combined with the prevention and control of sweet potato stem nematode disease to soak seedlings with pesticides, mix poisonous soil, trap poison bait, and spray pesticides.

1. Combined with spring and autumn ploughing, manually pick up insects with plows. Change the spring to autumn and winter and turn the ground as deep as possible, the overwintering larvae can be turned to the surface to dry out, freeze to death or be preyed on by natural enemies, and the control effect is obvious. 2. Clean the field to remove weeds and debris in the field, ridges, heads, edges and ditches, etc., and take them out for treatment outside the ground to reduce the number of larvae and eggs.

3. It is strictly forbidden to use organic fertilizers such as chicken manure, pig manure, duck manure, etc., to prevent adult worms from laying eggs. 4. Grubs, mole crickets, and needleworms can all be trapped, and the source of insects can be reduced. In the peak stage of adult insects, the adults are trapped, and the adults are killed intensively.

Intensive cultivation to eliminate weeds, deep ploughing in autumn and winter.

Agricultural control: intensive farming, weed elimination, irrigation, crop rotation; Physical and artificial control: artificial trapping, light trapping, sugar liquid trapping, grass trapping; Chemical control:

1. Use poisonous soil and granules: 3-4 kg of 1% trichlorfon powder per mu when sowing, add 10 kg of fine soil and mix well, or use 3% carbofuran granules, etc., sprinkle in the ditch along the ridge to poison the underground pests harmed by the seedling stage. Or sprinkle the above-mentioned pesticides on the roots of seedlings during cultivation to poison and kill insects.

2. Root irrigation: 50 kg of water with 300 ml of chlorpyrifos per mu or 1500-2000 times of 40% phosphine phosphate to irrigate roots at the seedling stage. 3. Poison bait:

Use the above pesticides to mix with fried wheat bran, corn or bran to make poisonous bait, and sprinkle it in the field at night.

Potato underground pest control should be controlled by withdrawing chlorpyrifos particles into the ridge of the field before land preparation.

4. Grubs, mole crickets, and needleworms can all be trapped, and the source of insects can be reduced. In the peak stage of adult insects, the adults are trapped, and the adults are killed intensively.

Potato early blight: Potato early blight can occur from seedling stage to adult plant stage, mainly affecting leaves, petioles and tubers. The affected leaves are left with black-brown, nearly circular necrotic lesions with obvious concentric rings, and in severe cases, the diseased leaves turn brown and die.

Petiole and stem damage Potato bacterial wilt is also one of the devastating diseases that can hit a large potato growing area and is a bacterial disease caused by Pseudomonas solanacear. Pseudomonas solanacearum generally overwinters in the soil as diseased residues.

Prevention and control methods: select disease-free seed potatoes, completely eliminate diseased potatoes before leaving seeds and cutting potatoes, and pay attention to the disinfection of knives when cutting pieces. Eliminate diseased plants in time when they are found.

Pay attention to the prevention and control of underground pests, implement crop rotation, and spray 58% methalene-manganese-zinc wettable powder 600 800 times liquid at the beginning of the disease, or 500 times liquid of 64% alum wettable powder, or 800 times liquid of Pulik water solution, sprayed once every 7 10 days, 2 3 times in a row.

Choose disease-free seed potatoes. The remaining tubers are strictly selected before germination before entering the cellar and after leaving the cellar, and the diseased tubers are eliminated. After germination, all those who do not germinate or germinate slowly, and the symptoms are all removed; When sowing in pieces or whole potatoes, strictly inspect and remove diseased potatoes and rotten potatoes.

Strengthen cultivation management, choose high-terrain, fertile and loose sandy loam land for planting, apply enough organic bottom fertilizer, increase phosphorus and potassium fertilizer, find diseased plants in the field and eliminate diseased residues in time and burn them in a centralized manner, and at the same time remove diseased potatoes and take them out of the field for deep burial.

Seed potatoes that are free of infectious diseases are carefully selected. Timely inspection in the field to find and remove infected plants. Use 1: every 5-10 days

Spray the Bordeaux liquid once at 2:40. If the prevention and control is not good, the soil-borne disease should be irrigated in time with the amount of 300-400 grams per mu of Tianlu sterilization king, and the spread of the disease can be controlled by irrigating twice at an interval of 3-5 days, and the fruit surface can be repaired.

Choose disease-resistant varieties, do not transport diseased potatoes from diseased areas, and eliminate diseased potatoes when sowing.

The medicine used for potato insect pest aphid control is the most common insecticide. For example, our most common 10% imidacloprid wettable powder 2000 times liquid, 40% dimethoate emulsion 1000 times liquid

The commonly used drugs for the control of aphids are as follows: 20 Halodimidamide, 20 Halodioxapyr pymetrozine, 50 Halodioxapyr, 40 Sulfoxapyr Ethyl spinosamad, 46 Fludimidamidine, 10 Imidacloprid, 50 Anti-aphid, Deltamethrin, 20 Deltamethrin, 50 Marathon, 1 Matrine, 25 Pymetrozine, Averrmectin, 50 Pyrazonil, Pyrethroid, 25 Cyanide Zinc EC, 50 Aphid Mist, 50 Octophthion, etc. You can choose to use it flexibly according to your needs and the type of crop.

Chlorpyrifos 48% granules carbofuran carbofuran butylthione carbofuran These are all on our **, you can go up and have a look when you have time!