How to disinfect tomato seeds? A few practical methods to teach you
What is the purpose of disinfecting tomato seeds? How do you disinfect tomato seeds? We hope experienced readers can help explain. Generally, tomato seeds that have not been coated need to be disinfected before sowing. Zhongdiwang has compiled the benefits and methods of tomato seed disinfection, listed below for readers' reference....
What is the purpose of disinfecting tomato seeds? How do you disinfect tomato seeds? We hope experienced readers can help explainGenerally, tomato seeds that have not been coated need to be disinfected before sowing. Zhongdiwang has compiled the benefits and methods of tomato seed disinfection, listed below for readers' reference.
Benefits of disinfecting tomato seeds:
Benefit one,It can prevent and control fungal diseases, such as early blight, leaf mold, Septoria leaf spot, anthracnose, Fusarium wilt, Verticillium wilt, gray leaf spot, etc.;
Benefit two,It can effectively prevent and control bacterial diseases, such as bacterial canker, bacterial scab, bacterial spot, etc.;
Benefit three,Disinfected tomato seeds can effectively prevent and control viral diseases, such as mosaic virus;
Tomato seed disinfection methods:
Before disinfecting the seeds, sun-dry them for 2 to 3 days, remove broken seeds, shriveled seeds, moldy seeds, etc., and then carry out disinfection by referring to the following methods.
Method one, warm water soaking method:
First soak the seeds in cold water for 10 minutes so that the seed surface absorbs water thoroughly, then remove the seeds and place them in warm water at 50 to 52°C for 15 to 30 minutes. During this period, stir the seeds continuously in one direction, and add hot water as needed to keep the water temperature within the appropriate range. It is best to measure the water temperature with a thermometer. When the soaking time is up, remove the seeds and place them in cold water to cool them down, then soak them to promote germination.
This method can prevent and control pathogens carried on tomato seeds, such as early blight, leaf mold, Septoria leaf spot, bacterial canker, and other diseases.
Method two, seed soaking with trisodium phosphate water:
First soak the seeds in cold water for 3 to 4 hours, remove the seeds, then place them in a 10% trisodium phosphate solution for 20 to 30 minutes. Remove them again and rinse the seeds three times with clean water (until the seed surface no longer feels slippery), then promote germination and sow. This can make the virus on the seed surface lose its infective ability.
This method can prevent and control viral diseases carried by tomato seeds.
Method three, seed soaking with streptomycin water:
Soak the seeds in streptomycin sulfate water at a concentration of 200mg/kg for 2 hours. After 2 hours, remove the tomato seeds and rinse them three times with clean water, then promote germination and sow.
This method can prevent and control bacterial pathogens carried on the seeds.
Method four, seed soaking with potassium permanganate water:
First soak the seeds in warm water at 40°C for 3 to 4 hours, remove them, then place them in 1% potassium permanganate water for 10 to 15 minutes. Remove them again, rinse three times with clean water, then promote germination and sow.
This method can prevent and control bacterial pathogens carried on the seeds.
Method five, seed soaking with copper sulfate water:
First soak the seeds in 01% copper sulfate water for 5 minutes, remove the seeds and rinse them three times with clean water, then promote germination and sow.
This method can prevent and control the pathogens of Fusarium wilt and Verticillium wilt carried on the seeds.
Method six, dry heat sterilization method:
Spread the tomato seeds in a constant-temperature dryer at a thickness of 2 to 3cm, ventilate and dry them at 60°C for 2 to 3 hours, then raise the temperature to 75°C and dry-heat treat for 3 days. This can make the pathogens on the seed surface and inside lose their infective ability. Compared with seeds not subjected to dry heat treatment, dry-heat-treated seeds delay germination by 1 to 3 days.
After dry heat treatment, tomato seeds should be sown within one year and should not be stored too long. During dry heat treatment, the temperature must be adjusted well and must not be too high or too low.
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