Seed disinfection to prevent vegetable diseases

Diseases of vegetables and vegetables seriously affect the quality and yield of vegetables, and farmers' friends often “prescribe the right medicine” when preventing various types of diseases, and thus neglect to prevent them from the source. The disinfection of seeds can effectively prevent the occurrence of diseases of vegetables and vegetables, and it is also an important measure to improve the yield and quality of vegetables.

The warm soup soaking method is suitable for simple disinfection of a variety of vegetable seeds. When disinfected, the seeds are placed in 55 degrees warm water. The amount of water used is 3-5 times the seed volume. Stir for 15-20 minutes until the water temperature drops to 35 degrees. Continue immersing for 4-6 hours before germination. This method is beneficial to sowing seed before sowing, softening the seed coat or seed shell, can increase the germination of the seed, increase the germination rate of the seed, has a good killing power to the fungus or bacteria attached to the seed epidermis, can reduce the melon The occurrence of seedling-like diseases is conducive to seedlings, seedlings, and strong yields.

Dry heat disinfection applies to tomatoes, eggplants and so on. The moisture content of the seeds was reduced to 7% or less, placed in an oven at 70-72 degrees, baked after 3 hours, and soaked with germination to kill the pathogens inside and outside the seeds. The technique required by this method is relatively high, and it is difficult to operate. It is only suitable for professional households with higher technical levels and has good bactericidal effect, especially for the seed-borne bacteria.

Hot water hot seeding method is suitable for seeds that are difficult to absorb water (such as wax gourd, watermelon, etc.), requires a water temperature of 70-75 degrees, and water consumption is 3-5 times of the seed weight. Seeds should be fully dried, and 2 containers should be used for hot seeds. Pour hot water back and forth. The first few actions are faster. When the water temperature drops to 55-60 degrees, it is changed to continuous stirring, and it is better to maintain this temperature for 7-9 minutes.

Liquid soaking Seeds soaked in 1.0% copper sulfate solution or 1.0% potassium permanganate solution, 40% formaldehyde (formalin) 100 times solution, etc. After 30 minutes, remove and rinse with water. Clean and dry to avoid phytotoxicity.

Seed dressing with dry seeds, this method can be used. The dosage of the agent is generally 0.1%-0.4% of the seed weight. The commonly used agents are 70% sodium propionate (dikeshone) or 50% procymidone (sulfacin), 50% carbendazim, 25% metalaxyl and others.

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