What do you know about the common pesticides used in wheat seed dressing?

It is mainly divided into two types, one is a coating agent and the other is a seed dressing agent. The first is made by mixing some microbiotic fertilizers with insecticidal and sterilization, and the second is insecticidal and disease control, but the effect is not as good as the first one.

There are two kinds of commonly used pesticides for wheat seed dressing, namely seed coating agent and seed seed dressing, which can effectively improve the survival rate of wheat, reduce the impact of pests and diseases, and play a very big role in increasing yield and ensuring harvest.

There are herbicides, insecticides, rodenticides, nutrient solutions, and mosquito repellents. And these agents are very effective, and many farmers will buy them.

Wheat seed dressing

The use of wheat seed dressing can improve the emergence of wheat seeds and the growth of seedlings, and have a good preventive effect on wheat soil-borne diseases (sheath blight, total erosion, root rot, stem base rot, etc.) and insect pests (grubs, mole crickets, needleworms, aphids, etc.), which can play a role in strengthening roots and seedlings, and lay the foundation for the stable and high yield of wheat in the second year.

Determine the type of medication to take

First of all, according to the local pest and disease situation to choose a good type of medicine, if the local environment in the seedling stage of the insect pest is light, but the disease is extremely important, then the seed dressing only needs fungicide, no need to add insecticides; On the contrary, only pesticides are added, no fungicides are added. But if it is the phenomenon of mixed occurrence of pests and diseases, fungicides and fungicides are needed at the same time, if the underground insect pests are more serious, the pesticide dressing can not achieve the expected effect, and the method of combining seed dressing and soil treatment can be used for comprehensive control.

Pay attention to the dosage

The application amount of pesticides is extremely serious during seed dressing, and some farmers blindly increase the dose of pesticides by feeling when dressing seeds, which may have the opposite effect. According to practice, if the amount of pesticides such as powder rust and ocanthal scale is too much during wheat seed dressing, it will cause pesticide damage to the seeds, resulting in delayed emergence of wheat seedlings, slow growth, and in serious cases, there will be a lack of seedlings and dead seedlings. Therefore, we must strictly follow the medication standards to use drugs, and we must not use drugs blindly.

Mix as you go

Generally, after sowing and mixing with seeds, the time is not too long, so as not to reduce the efficacy, generally after mixing seeds with insecticides, after simmering for 2-3 hours, the seeds can be sown after being absorbed by the seeds. After dressing seeds with fungicides, you should understand that sowing or sowing seeds after drying in the shade, if the simmering time is too long or the seeds are not sown for a long time, it is easy to produce pesticide damage.

The purpose of seed dressing should be clear

Seed dressing is only effective for soil-borne or seed-borne diseases, underground pests and some aboveground pests, and some add micro-fertilizer or regulator to supplement soil fertilization, and cannot replace fertilization. As far as wheat is concerned, seed dressing is ineffective or ineffective against rust, powdery mildew, scab, ground tiger, wheat leaf bee, etc., but it can improve resistance.

Pay attention to the situation of the seeds, choose the appropriate drug to use, pay attention to the use of the drug, pay attention to safety issues, and pay attention to the problem of treatment methods.

Be sure to pay attention to the amount of medicine, pay attention to the ratio of water to medicine, the position of spraying on the plant, pay attention to the time of spraying, and the way of spraying.

Imidacloprid for wheat dressing.

Imidacloprid is a chloronicotinoid insecticide, with strong systemic and high activity, which has special effects on some Coleopteran pests such as stabbing and sucking mouthparts pests and grubs, and can also prevent viral diseases, and is highly safe for the environment. Imidacloprid can control not only wheat aphids, but also wheat powdery mildew and fungal diseases such as rust.

Imidacloprid must be used with a content of 60% imidacloprid suspension seed coating agent in order to achieve better control of aphids, mole crickets and grubs. Before wheat sowing, 10 to 15 kg of wheat seeds per mu, 60% imidacloprid suspension seed coating agent and 6% tebuconazole suspension seed coating agent, add 100 ml of water, stir evenly, evenly wrap the seed coating agent on the seed surface with a seed dresser, dry and sow the seeds.

Wheat cultivation techniques

Wheat planting first deep ploughing the land to eliminate stubble, rotary tiller leveling after herbicide, top dressing, manual sowing or mechanical live broadcast of wheat, and then rotary tillage suppression, ditching and ridge. Generally, the seedlings will emerge 7 to 10 days after sowing, and if the seedlings do not emerge in a week, irrigate them in time.

After the emergence of wheat, the temperature in the south is still about 20, at this time the weeds are overgrown, and the wheat competes for nutrients, so it is necessary to timely chemical weeding, after herbicides, top nitrogen fertilizer. The wheat in the north is watered in winter, suppressed and topdressed. In winter, it is necessary to clear the ditch and drain the water, control aphids and red spiders once, and if the temperature is warm, the soil is moist and the root rot should be controlled once.

For every 100 kg of wheat seeds, you can use 100 130 ml of 40% phosphine EC and add an appropriate amount of water to mix seeds, mix well and stuff for 4 6 hours, dry and sow seeds. According to Wu Renhai et al., Henan Academy of Agricultural Sciences, the plant protection institute of Henan Academy of Agricultural Sciences reported that phosphine seed dressing has an inhibitory effect on the growth of wheat seedlings, accompanied by leaf twisting, leaf tip yellowing necrosis, weak seedlings and other abnormal growth conditions, and its 6-day inhibition medium concentration is gram kg. Growth inhibition and growth deformity can affect the soil topping capacity of wheat seedlings, which can lead to the decline of wheat emergence rate in the field as well as the decrease of germination rate.

Field experiments showed that the dose of phoxanthion seed dressing was gram kg when the inhibition of wheat seedling emergence reached 15%. When using phosphine and its mixture to control underground pests, it is necessary to strictly control the dosage of seed dressing, and the dosage can not be increased at will, otherwise it will not only fail to protect the seedling, but also reduce the seedling emergence rate and cause losses.

Do you need to mix wheat seeds? What medicine to mix and how to mix.

When mixing wheat, we must understand the dosage of pesticides, accurately grasp the dosage of pesticides, and the performance of pesticides. The weight, dosage and amount of seeds should be symmetrical when dressing seeds. If wheat is mixed with phosphine, the pesticide should be diluted with water first, and then the wheat seed should be mixed with cloud cover and sown after sowing.

And try to follow the waves, not for too long, and not in the sun.