Potato is a very common vegetable. It tastes good and many people like it. Therefore, more and more people are growing potatoes now. Friends who have potato seeds may know that seed dressing is required before sowing. What's the reason? What are the methods of seed coating?
Reasons for potato seed dressing
1. Seed potatoes are easily infected by viruses or pathogenic bacteria during loading, unloading, transportation and storage. If not treated, it will cause cross-infection, rot and deterioration. The seeds will rot when planted in the field, and pathogenic bacteria will infect the plants and cause diseases.
2. Due to the trauma caused by potato cutting, the wound can easily breed bacteria in a moist environment, making the seed pieces sick.
3. There are soil-borne pathogens in the soil. If the seeds are not treated well, soil-borne pathogens can easily become infected when sowing in the field, causing the plants to become infected.
Potato seed dressing methods
1. Seed soaking with gibberellin and carbendazim
Potatoes are in a dormant state when sown. In order for potatoes to take root and germinate as quickly as possible, they must break the dormancy period and germinate quickly. First chop the potato seeds, put them into 0.5mg/L gibberellin solution, add 10g of 50% carbendazim powder, prepare an appropriate amount of solution according to the number of potato seeds, soak for 10-15 minutes, pick up and drain, add plant ash Mix well and then sow.
2. Soak the seeds with gibberellin and prochloraz. 3. Use various chemical substances for seed dressing. The specific operation is to mix 100 grams of methyltobin, 14 grams of streptomycin, 5 ml of sodium nitrobenzoate, and 25 pounds of water spray into every 300 pounds of potato seeds. Then mix 10-20 pounds of plant ash thoroughly.
Precautions for potato seed dressing
Fungicides are commonly used seed dressing agents to prevent and control potato seedling diseases and soil-borne diseases, such as metoprolol, metalaxyl, and chlorphenyl However, for perennial problems in potatoes, seed dressing can be targeted. For serious soil-borne diseases, such as black mole, fusarium wilt, etc., thifluramine, cresocinate, Metoprolol and other chemical agents are used for seed dressing. In the case of late blight, chemical agents such as allyl manganese zinc, metalaxyl manganese zinc, and propyl manganese zinc can be used for seed dressing. If the underground pests are serious, imidacloprid and thiothiazide can be used at the same time. Promethamin is used to control aphids, planthoppers, thrips and other pests in the seedling stage; the general formula can use metoprolol + propargyl + streptomycin, etc., for more comprehensive control.
In summary, the main reason why potato seed coating agents are needed is that untreated potato seeds can easily cause cross-infection, rot and disease. The above editor also shared some methods of potato seed coating, hoping to be helpful to everyone.