There are many pests in the ground of spring corn, what medicine should be used?

You should know that compared with aboveground pests and diseases, the underground part of the pests and diseases will increase a certain degree of difficulty, so it is generally prevention in advance. Common underground pests of corn are: needleworm, grub, mole cricket, ground tiger, Spodoptera exigua, etc.

Let's take a look at the common pests and diseases of corn, including large and small spot diseases, seed rot, root rot, seedling blight, gray blight, round spot, corn rust, corn top rot, iron beetle, corn borer, small ground tiger, yellow ground tiger, mole cricket, needleworm, corn heartworm.

It is important to fertilize spring corn to prevent insect pests, and it is generally heat-treated (fermented) manure. If the unfermented (raw feces) love insects, you can spray pesticides such as phosphine and imidacloprid to prevent insects. The seeds are now mixed with medicine and do not need to be treated.

After the emergence of seedlings, due to the seedlings tender and sweet spring jade, when ploughing, you can put fertilizer and control of underground insects, (agricultural stores are sold, not expensive, mainly to control ground tigers, corn borer) medicine sprinkled on the ground at the same time, control underground pests, 1Seed dressing, 2Use of medicinal fertilizers, such as foresight, technology, chlorpyrifos, medicinal fertilizers, etc.

Hello, I'm glad to answer for you, my family has just finished planting corn in the spring and shares our insect control methods today, 1When we buy seeds, we call the technicians of the extension station to help us prepare the seed coating agent (the specific composition and dosage technicians are modulated according to the local soil pests, and then after a period of time, the sowing work of spring corn will begin, when planting spring corn, many farmers have to carry out some pest control work in advance, so as to improve the germination rate to a certain extent, and avoid the lack of seedlings.

Corn belongs to important food crops, divided into fresh corn and ordinary corn, with the improvement of living standards, ordinary corn is mainly used as feed for livestock and poultry, corn contains more starch, belongs to energy feed, animal husbandry to develop, can not do without corn as the support of feed needleworm larvae like moist soil, generally on the surface of about 10 cm soil temperature in 7 13 is serious, mainly eats corn inner stems and underground roots, can bite off the seedlings that have not been unearthed.

You can choose some pesticides or insecticides directly, because in this way you can eliminate all these pests, which can also improve the yield of corn fields.

You can use phosphorus sulfate, potassium sulfate and some spray pesticides can kill pests, and the effect is particularly good.

Drugs such as carbofuran, chlorpyrifos, and imidacloprid can be mixed with seeds, dichlorvos, and some other agricultural medicines.

Seed dressing with seed coatings, such as carbofuran, imidacloprid, chlorpyrifos, etc., can prevent corn seeds sown by underground pests. When sowing, evenly sprinkle diazinphos granules, or chlorpyrifos granules, or phoxanthion granules around the corn seeds.

Each pest and disease has a different medicine, you can go to a professional pesticide store to buy, communicate with the store staff, he will recommend you a very suitable pesticide.

Common corn underground pests include grubs, mole crickets, needleworms, etc. Grubs: Use 50 octathion EC, sprayer to remove the nozzle along the ridge or corn plant drip irrigation evenly.

Mole crickets: use 50% phosphine EC, mix seeds according to seed weight, and sow after 12-24 hours. Needle worm:

You can use 200 ml of 48% maggot emulsifiable concentrate, mix 10 kg of fine soil and sprinkle it in the planting ditch, or mix pesticides with farm fertilizer and apply it well.

At this time, you can use some pesticides, and you can also eat more fertilizers, such as phosphorus fertilizer, nitrogen fertilizer, compost, organic fertilizer.

At this time, pesticides should be used, and after all, there will be a lot of pests at this time, and some enemies must be used to kill, trichlorfon, these pesticides to solve, and it is very fast and effective.

The main harm of the gray planthopper is the transmission of corn crude shrinkage virus, once the corn is infected and difficult to control, the light yield is reduced by more than 30%, and the serious harvest is lost, the disease is also known as the cancer of corn, and it must be prevented and treated as soon as possible. Pharmaceutical prevention and control should grasp four key periods, choose low-toxicity and high-efficiency pesticides, and control the whole system in order to receive good results: (1) Sowing period:

Seeds are poisoned or treated with seed coatings containing systemic insecticides or corn seed dressing agents (2) Early wheat filling in mid-May: weeds are treated with pesticides such as imidacloprid or thiamethoxam; (3) Maturity period: In the early stage of gray planthopper migration, spray with thiamethoxam or 20-30 grams of imidacloprid mixed with 50 grams of virus A, once every 3-5 days, and spray 3-4 times in a row (4) Initial susceptibility:

20 ml of cypermethrin is selected, mixed with corn special liquid fertilizer, and then sprayed with thrips, corn thrips are mainly parthenogenesis, and adults will feed on corn to reduce crop yield. It will cause patches of silver-gray spots on the leaves of the plant, and the leaves will fade green and yellow, and the damage rate can be as high as 80 90. When thrips are seriously damaged, they should be sprayed with pesticides in time for control, and 10% imidacloprid wettable powder 2000 times can be used, or 22% chlorpyrifos and imidacloprid EC 2500 times liquid, or 20% fenvalerate EC 3000 times liquid spray corn borer corn borer commonly known as arrow pole worm, corn borer, etc., belongs to the lepidopteran moth family.

Corn borer is the world's largest pest, with more than 150 species of hosts, of which corn is the most harmful. It can cause a yield loss of 5-15% per year. In the 2-3 instar larval stage, the following agents can be used:

48% chlorpyrifos EC 70-90ml mu; Cyhalothrin EC 25-50ml mu; deltamethrin EC 20-30ml mu; Cyfluthrin EC 30-40ml mu; 1% emamectin benzoate EC 5-10ml mu: 8000IU ml Bacillus thuringiensis wettable powder 100-200g mu 40-50kg of water evenly sprayed. Precautions 1 Thrips are harmful in the corn heart leaf, and the liquid medicine should be sprayed into the corn heart when spraying.

2 Gray planthoppers are good at flying, it is best to spray adjacent plots together for control, and adopt the control method from the surrounding to the middle to improve the control effect.

For the control of corn borer, you can choose to spray with insecticides such as tetrachlorantraniliprole, chlorantraniliprole, cyhalothrin, emamectin benzoate, etc. Granules are applied at the end of the heart lobe phase (large flare stage). Granules can be used as finished products, such as cyhalothrin granules, with grams per plant; or 3% phosphine granules, mixed with cinder according to 1 15, apply 2 grams per plant; or phosphine granules, 1 gram per plant; or 16000IU mg of Bacillus thuringiensis wettable powder 200 300 grams Mu Mix well with 4 kg of fine soil and sprinkle it into the heart leaves.

It can also be perfused and dipped in filaments at the panicle stage. For perfusion of male and female panicles, 20 40 ml of 6% chlorantraniliprole avermectin can be used per mu, or 20 ml of cypermethrin EC, or 20 ml of 5% fipronide EC, or 200 grams of 3 5 ml of sulfantraniliprole suspension, and the above agents are mixed with 50 kg of water. When the agent is dipped in filament, cypermethrin EC can be mixed with 50 kg of water per 20 ml, poured into a discarded mineral water bottle, and the bottle mouth is capped with a straw.

At the end of the corn powder, dip the filaments and smoke the larvae that are harmful in the ears.

The drug for the control of corn pests needs to be decided according to the type of pest, which can generally be controlled by chlorantraniliprole, emamectin benzoate and other pesticides, and the method can be sprayed, poisoned bait trapping, sprinkling poisonous soil, etc.

Corn is a common crop in our country, almost every family in the countryside has planted, but during the planting period will always be infested by underground pests, and it needs to be controlled with drugs, so what medicine is used for corn underground pests?

Common underground pests in corn fields include: ground tiger, grub, mole cricket, needleworm, and in recent years, the serious local damage of the black bug, Spodoptera exigua, corn heartworm, etc. They inhabit the soil and mainly harm the seeds, roots, seedling stems and young leaves of corn, resulting in serious hazards such as seeds that cannot germinate and emerge, roots that cannot grow normally, or heart and leaf deformities, seedlings die, lack of seedlings and broken ridges.

Therefore, it is necessary to use drugs for prevention and treatment in time, so as not to cause more serious losses.

Corn underground pests can be controlled with trichlorfon, phosphine, dichloride, methamidophos, deltamethrin, fenvalerate and other agents, according to a certain amount of preparation, spraying or mixing evenly sprinkled on corn plants, can effectively control underground pests, the effect is more significant.