How to control potato grubs? If you want to control potato grub pests, what measures should be taken

It is necessary to clean up the weeds in time, turn the ground in autumn and winter to expose the eggs to the surface and freeze to death or eat, and you can also spray or dress seeds with pesticides, which will effectively prevent the growth and reproduction of pests.

1.Do a good job of forecasting to prevent the occurrence of grubs.

2.Agricultural prevention and control, the implementation of water and drought rotation.

3.Treatment of soil with chemicals, 4With the drug along with the seeds.

5.Use poisonous bait to trap and kill insects.

In the way of planting potatoes, it is necessary to take "ridge formation" and "laying mulch" planting on new varieties as much as possible, so as to achieve "intensive cultivation", and the weeds in the field before and after potato planting must be eradicated in time, and the environment for grubs can not be created.

Sister Huada's damage to potatoes is mainly larvae and adults. In the corner of our mountain, Hua Dajie is spending the winter in the crevices, bark, and weeds of the rocks, and the next spring is warm, and if it blooms, the first generation of young adults will first damage the potatoes. When observing in the field, you will find that the leaves of the potatoes have been bitten by Sister Hua, indicating a lot of deficiencies.

When there are many insects, the leaves of the potatoes are completely destroyed, and only the skin of the leaves remains, and the leaf flesh is eaten away. If you're lucky, Sister Hua can find a lot of parallel and transparent tooth marks on the leftover potatoes. When the damage is severe, the potato leaves turn brown and wilt and die.

The second is the harm of silkworms. Silkworms used to be a relatively light insect. In recent years, the degree of damage has increased and it has risen to become a major pest, which deserves the attention of friends and family.

The harm of silkworms is mainly manifested in the seedling period of potatoes unearthed at present. The larvae cut open the stem of the potato root, killing the entire plant. As a result, there is a shortage of monopoly seedlings, which seriously affects potato production.

Finally, there is the harm of aphids. Aphids are the host and vector transmitter of the potato virus. The control of aphids is another level of green control of potato viruses.

Chemoprevention**: To prevent plague, ring rot and black stem disease, spray 1000 times of zinc of ginseng and 1000 times of zinc of Lydoxin. Sprayed once every 7 10 days, 2 3 times, can be sprayed with 600 times the liquid of Crowe, Redomir, and Kinredomir.

In the early stage of the onset of green horse disease, agricultural streptomycin sulfate 4000 times solution 77%, or 77%, sprayed 500 times wet fine particulate powder, or 600 times 12% green flow oil, respectively, 250 500 grams of solution, once every 10 days, 2 40% prevention of mites underground pest control can be sprayed with trichlorfon, zinc yellow phosphorus preparation poison ivy field. Before germination, the soil should be kept moist frequently, and in case of drought, water should be filled in time, do not pour water into the ditch, do not fill it with water, do not plant sweet potatoes in the car, do not be flooded by water, and drain and dry in time.

In summer, it is sterilized and insecticidal by deep turning and sunlight. In addition, deep rakes are made after harvest to transfer pests to the soil surface and freeze overwintering larvae, pupae and adults to reduce the number of overwintering and the number of pests. Timely remove weeds and debris such as ground, ground change, ditch, etc., carry out extraterrestrial treatment, reduce larvae and eggs, and send live organisms.

Eradicate bugs through Chongqing. It's like removing weeds from a ridge and killing pests that live on the weeds.

Chemical prophylaxis**. Use pesticides such as mite hall, hypertonic mite, neoxathin, crystal trichlorfon, brominated polyurethane emulsifiable concentrate, ethylamine human milk, etc., dilute according to the instructions, and spray on the stems, leaves and furrows. This is the most effective pest control method, and it is forbidden to use any pesticides 20 days before harvest, causing pesticide residues to potato pieces, and special care should be taken not to affect food safety.

The measures to control potato grub pests are as follows: Do a good job of forecasting; do a good job in agricultural prevention and control; carry out soil treatment; Seed dressing; Fishing with poison bait. Physical methods.

Where conditions permit, black light can be installed to trap and kill adult potato grubs to reduce the number of larvae. 7.Biocontrol.

Use brown carnivorous flies, black scarab beetles, bumblebees, beautiful bulb bass, etc.

Harmfulness: The roots of the potato can be bitten into a mess, eat most of the young tubers, and bite into holes on the old tubers, causing dead seedlings in the field and devastating disasters in serious cases.

Pesticide control: When applying farmhouse fertilizer, it should be fermented at high temperature to make the fertilizer fully rotten to kill larvae and eggs. Seed dressing with pesticides, mixed with seed coating.

Use 50 200 250 grams of phoxanthion emulsifiable concentrate per mu, add 10 times of water and spray on 25 30 kg of fine soil to mix well to make poisonous soil, apply along the ridges, and then hoe shallowly, or withdraw the poisonous soil from the seed ditch or ground, and then plough or mix into manure and apply; 2 3 kg of 2 methyl isosulfonate powder per mu mixed with 25 30 kg of fine soil to make poisonous soil; Soil was treated with 3 methylisosulfonate granules, 3 vepardan, 5 octathion granules or 5 diaanon granules, kilograms per mu.

Control of hatchling larvae in summer. Can be diluted every 667 m2 with 100 grams of 50% phosphine emulsion with an appropriate amount of water, mix with 15 20 kg of crushed slag and phosphine emulsion, and then evenly sprinkle on the ground. It is necessary to plough the land while sprinkling the medicine, turn the medicinal soil into the soil 1 10 cm deep, strictly prevent the pesticide from becoming ineffective due to sun exposure, and the general validity period is about 1 month.

Autumn control of older larvae. Because the grub has only three instars in its life, the vast majority of grubs enter the third instar after August, and this is the most serious period when grubs harm autumn vegetables, and at this time they can be used to control the poisonous bait of phosphine when sowing autumn vegetables. The method is to fry the crushed soybean cake or cottonseed, spray the appropriate amount of water with 100 grams of 50% phosphine emulsion on the soybean cake or cottonseed, mix well and sprinkle it in the sowing ditch or hole, and the dosage is 1 000 1 500 grams per 667 meters.

Control measures include removing weeds in the field and on the edge of the ground, so that the adult eggs are laid away from the Honda and reduce larval damage. Artificial hunting and killing should be carried out in a timely manner to find the edge of the field and the head, destroy its wintering place, and eliminate the source of insects. Proper water and fertilizer management and the selection of high-quality seeds are also required.

Causes and prevention of yellowing of potato leaves.

1. Late blight.

One of the most common potato diseases, there are many water-stained dark spots on the surface of the diseased leaves, which then gradually expand and form spots of different sizes. Then the leaf edge of the plaque begins to turn yellow, and it will start to develop towards **, causing the leaf to turn yellow.

Control methods: 1) The selection of disease-resistant varieties is the most direct and effective way to prevent and control late blight.

2) Spraying frosturea cyanide + mancozeb, mancozeb and matrine in the early stage of late blight can be effectively controlled, but attention should be paid to avoid the emergence of drug resistance, and systemic agents should be sprayed alternately 1 2 times.

3) In the later stage of late blight, it is recommended to use downy mildewcarb + fluopyramide and di-noymide, which can effectively control the development of the disease.

2. Early blight.

As with the late blight, the main damage is to the leaves of the plant, which will appear in various dark spots, which will gradually expand into patches. Plaqued leaves begin to turn green and yellow, and eventually the entire leaf turns green, dehydrated and dies.

Prevention and control methods: 1) Select early-maturing and disease-resistant varieties and harvest them early.

2) Increase the application of foliar fertilizer, organic fertilizer, phosphorus and potassium fertilizer to improve the disease resistance of plants.

3) The prevention and control of early blight must be used in conjunction with the prevention and control of late blight, and complement each other. Pharmaceutical recommendation: Yihu (difenoconazole + 20% azoxystrobin) 50ml mu + epidemic shield (10% methalene + 48% mancozeb) 100g mu.

3. Verticillium wilt.

Verticillium wilt is a *transmissible disease that mainly attacks the roots of the plant and then slowly spreads upwards. When the roots are infected, the pathogen will destroy the vascular bundles in the plant, resulting in a great hindrance to the absorption and transport of nutrients. The plant lacks nutrients, and the leaves gradually turn yellow from the veins and finally form a yellowish-brown color.

Prevention and control methods: 1) Pay attention to the use of biological organic fertilizer, and apply Bedofeng carbon energy fertilizer (microbial agent) per mu to improve the soil, which can effectively reduce the occurrence of disease.

2) Implement crop rotation with non-solanaceae crops for more than 4 years to reduce the breeding of *transmitting bacteria.

3) Strengthen fertilizer and water management, control the amount of nitrogen fertilizer, and use trace element water-soluble fertilizer for flushing application during the potato expansion stage to supplement the nutrients needed by the plant and enhance the disease resistance of the plant.

4. Potassium deficiency. Potassium deficiency during the growth of potatoes will cause rot of the leaf tips and leaf margins, which will gradually turn from green to yellow. When potassium deficiency is severe, the leaves will curl together and the phenomenon of defoliation will increase, which will have a great impact on the growth of the plant.

Prevention and control methods: 1) Mix 200kg of plant ash with base fertilizer, and apply 150-200kg of plant ash or 10kg of potassium sulfate with water when applying long potato fertilizer 40 days after planting.

2) 40-50 days before harvest, spray potassium sulfate, once every 10-15 days, 2-3 times.

In general, there are many causes of yellowing of potato leaves, but most of them are the result of diseases and nutrient deficiencies. Therefore, during the cultivation and management of potatoes, it is best for growers to choose local disease-resistant varieties with good performance for cultivation, and at the same time strengthen various disease prevention and daily management measures, so as to greatly reduce the probability of potato leaf yellowing.

The phenomenon of yellow leaves drying up in potatoes is caused by nitrogen deficiency, and some nitrogen fertilizer can be supplemented, and then some thiophanate-methyl can be sprayed.

Potatoes, if they are yellow and crying, it may be that one is too much phone bill, and the second one may be too dry.

Potatoes may have been eaten by insects and have a kind of borer, and it is recommended that you apply pesticides to control them.

What diseases do potatoes have, and how to prevent them, you can go to your local fruit and vegetable farmers. Inquire about the name that should be in your local area.

If you ask an agronomist about potatoes, they may be more professional.

There are many types of potato diseases, and scab disease is a disease with a high incidence, and prevention is more important than cure, so early prevention of disease is the key. This plan is what I found, and I wrote it down little by little, and it should be useful to you.

Preventive medication: use 30ml of fine cuts, mix with 15 kg of water, and spray once every 7-10 days.

There are always diseased plants, in the early stage of the disease, use 50ml of fine cut plus 30ml of R. solanacearum Rick, mixed with 15 kg of water, and use the medicine once every 5-7 days;

In the middle and late stages of the disease, the same medicine is mixed with 15 kg of water, and the medicine is used once every 3-5 days.

To prevent and control the disease, we should first choose potato tubers with intact surface and disease-free seeds. Plots with long-term onset disease, even if the onset is mild, should be stopped for several years. Potato mealy crust is similar to scab in that the symptoms of buffet are brown bumps on tubers that later break the epidermis, but the bulges do not grow spores.

This is potato late blight.

Agricultural control. 1. Crop rotation and stubble: prevent continuous cropping, prevent continuous cropping with Solanaceae crops, or planting nearby. It should be rotated with cruciferous vegetables for more than 3 years, and avoid planting adjacent to potatoes;

2. Cultivating disease-free and strong seedlings: pathogens mainly overwinter in the soil or diseased residues, therefore, the seedling soil must be strictly selected from the soil that has not been planted with Solanaceae crops, and it is recommended to use nutrient bowls, nutrient bags, hole trays, etc. to cultivate disease-free strong seedlings;

3. Strengthen field management: apply sufficient base fertilizer, implement formula fertilization, avoid partial application of nitrogen fertilizer, and increase phosphorus and potassium fertilizer. After planting, weeds should be controlled in time, and according to the fruiting habits of different varieties, reasonable pruning, topping, and pruning should be carried out to reduce nutrient consumption and promote the growth of the main stem;

4. Reasonable dense planting: according to the length of the growth period and fruiting habits of different varieties, different dense planting methods are adopted, such as: about 2000 plants per mu of double stalk pruning, 2500 3500 plants per mu of single stalk pruning, reasonable dense planting can improve the ventilation and light transmission conditions in the field, reduce the humidity in the field, and reduce the occurrence of diseases;

Biocontrol. Prevention: 8-10 days before flowering and after flowering, use 30ml of "Frost Bell" mixed with 30 kg of water for spraying.

**: "Frost Bell" 50ml + "Garlic Oil" 15-20ml, sprayed with 30 kg of water, 1 time in 5-7 days, 2 times in a row, after the situation is controlled, it is turned to prevention. After the disease is controlled, it is switched to a prophylactic regimen.

Chemistry**. The types of agents include Bordeaux liquid, zecze, ammonium and other protective agents and systemic fungicides fluoromyceticides, downy mildew, silver farry, Kelu, 38% oxazoxystrobin, chlorothalonil, frostbell, Ruifutica and other pyrimidine nucleoside antibiotics, Bacillus subtilis, etc.

Potato black mole disease.

1.Select disease-free seed potatoes, cultivate disease-free strong seedlings, and establish disease-free farmland; In areas with severe disease, especially in high-altitude cold and cool mountainous areas, special attention should be paid to sowing at the appropriate time and avoiding early sowing; Once diseased plants are found in the field, they should be pulled out in time, buried deep away from the planting plot, and disinfected with lime in the diseased hole.

2.Seed potato treatment: 35% Fumei double wettable powder 1000 times liquid soaking for 10 minutes, or soaking seeds with 50% heterobacterial vein solution for 5 minutes.

3.In the early stage of the disease, the following agents can be used for prevention and treatment: benzopropiconazole; Oxazalin, thiflumimid, 14 20ml per mu to spray 40 60L of water on stems and leaves.

FYI! Thank you for your great review!