There are more and more users of wheat seed dressing agents in recent years. Many people follow the trend of the wind. They are also following the seed dressing by others. The reason for wheat seed dressing is mainly to prevent some pests and diseases, mainly underground pests, China. The pesticide network Xiaobian briefly introduces the main control objects and methods of use of wheat seed dressings. After understanding the reasons, it is believed that the seed dressing agents can be used correctly during seed dressing:
The main control object of wheat seed dressing:
1. Soil-borne diseases
Mainly due to total erosion, sheath blight, root rot. These germs can survive for many years in the soil, and the germs can invade when the wheat seeds begin to germinate.
2, the system infects diseases
There are mainly black powdery mildew, smut and smut, and the germs invade the growth point from seed germination and systematically infect with the growth of wheat plants. The ear stage shows signs of harm.
3. Underground pests
Mainly cockroaches, cockroaches and golden worms, they bite the roots of wheat in the autumn seedling stage and after returning to green, resulting in lack of seedlings and ridges.
Wheat seed dressing method:
Underground pests: Mixing wheat with pesticides and treating soil before planting is the most effective measure to control wheat underground pests. For lighter fields, 50% phoxim or 48% chlorpyrifos 80ml can be used to seed 50 kg of seeds, which has special effects on underground pests such as cockroaches, cockroaches and golden worms. The area where the underground pests are severely affected should be controlled by combination of soil treatment and seed dressing. The soil treatment can be applied to the ground evenly with 3% phoxim granules of 2 to 2.5 kg per acre, and then turned into the soil.
Diseases: Seed dressing can not only prevent and control wheat smut, but also effectively control the occurrence and damage of wheat rust, total eclipse and powdery mildew before winter, and reduce the amount of overwintering bacteria. Scattered smut, smut, root rot, sheath blight, total eclipse, etc., can be dry mixed with 0.5% of the weight of pentachloronitroaniline of 40% of wheat. To control wheat smut, you can also choose 1 bag of 2% tebuconazole suspending agent (10g), add water 0.2-0.3 kg, mix 10~15 kg, or 15% triazolone wettable powder 20g, mix wheat 10 kg, can prevent powdery mildew and leaf rust. In the severely affected area of ​​wheat total erosion, seed treatment with 12.5% ​​silthiaxanthin suspension can be used to control the whole disease of wheat. Stir in the mixture for 6 to 12 hours, dry in a cool place and sow. In the area of ​​wheat yellow dwarf disease and plexus dwarf disease, imidacloprid can be used to treat seeds, control the transmission of insects, and control the occurrence of yellow dwarf disease and bushy dwarf disease.
In addition to chemical dressing, there are many things that can be used to seed wheat:
1. Ammonium molybdate seed dressing. 150 g of ammonium molybdate was dissolved in a small amount of hot water, and then an appropriate amount of cold water was added thereto, and the mixture was uniformly stirred and sprayed on 50 kg of wheat seeds.
2. Trace element fertilizer dressing. First, the trace element fertilizer is heated to 50 grams with warm water, then add appropriate amount of water, stir well and mix 10 kg of wheat seeds, dry and sown. Can improve the disease resistance of plants.
3. Manganese sulfate seed dressing. Before planting, dissolve 200 g of manganese sulfate in 1 kg of clean water, then mix 50 kg of wheat seeds, dry and sown. Can increase 1000-grain weight.
4. Chlorophyll seed dressing. Before sowing, use 50% chlormequat 250g, 5kg of water, spray it evenly on 50kg of wheat seeds, then pile up for 4 hours, until the liquid is fully absorbed by the wheat seeds and sow. It has the function of controlling and lodging.
5. Microbial inoculum seed dressing. Before planting, take 1000 g of powdery microbial inoculum per acre, add appropriate amount of water, mix well and mix with wheat seeds, or use 1500~2000 g of granular microbial inoculum per acre, mix with wheat seeds and sow. Seed dressing with microbial agents has the effect of promoting root development and promoting tillering.
6. Mixed planting of ash and ash: Mix 0.5 kg of grass ash per mu of wheat, and increase the yield by 5% with the mixing.
7. Borax seed dressing. Dissolve 100 g of borax in 500 g of warm water, cool and spray on 50 kg of wheat seeds, mix well, dry and sown. Seed dressing with borax solution is beneficial to plant root development and flowering and fruiting. A variety of disease and pest mixed areas, it is necessary to vigorously promote the application of fungicides and insecticide compound coating agents or seed dressings for coating or seed treatment. Appropriately formulated seed coatings or seed dressings should be selected according to the local main pests and diseases, and the dosage is generally the same as that of the single agent in the compounding agent.
Notes on wheat seed dressings :
1. Seed dressing storage: It is necessary to strictly follow the seed dressing operation rules. It is best to carry out uniform seed dressing. The seed dressing should be placed in a tightly closed container, labeled, stored away from fire and heat, and children and livestock cannot In a cool, dry place. Do not mix with food, drinks, etc. Prevent human and animal poisoning.
2. Safe operation: The staff at the time of seed dressing, wear rubber gloves and do a good job of protection. If there is poisoning, please go to the nearest hospital.
3. It can't be placed for a long time with the mix. Generally, after the wheat is mixed with the fungicide , it should be sown immediately or immediately after being dried. Seeds after seed dressing should be destroyed if they are not used, and should not be stored for a long time.
4. Accurately grasp the amount of pesticides, wheat seed dressing is for better growth of wheat. If the wheat seed dressing dose is not used properly, it is very harmful to the growth of wheat. If the dosage is too large, the wheat emergence will be postponed and the growth will be slow. In severe cases, there will be a shortage of seedlings and ridges, so special attention should be paid. Farmers should not use the “estimated†medication when dressing wheat seeds, blindly increasing the dosage. The amount of the seed dressing should be added according to the standard of use.
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