Precautions after soil disinfection

Planting time after fumigation

When cold and wet, the time of open gas should be increased; when hot and dry, the time of open gas can be reduced; high organic matter soil should increase open gas time; clay requires longer open gas time than sand.

Pastoral health and management

After the soil is disinfested, it is important to avoid the reintroduction of pests and diseases. Inadvertent soils may inadvertently be present in plant wastes from former crops and insect pests in irrigation water to the treated soil. Should avoid the unsterilized soil on the plastic cloth into the disinfection of the field, to avoid disinfection and then turn cultivation.

Seed processing

In order to avoid the introduction of soil-borne diseases into the treated soil, it is necessary to start with the seeds. First of all, according to the development situation of the local vegetable diseases and insect pests, select suitable varieties that are suitable for cultivation in the region. Seed disinfection before sowing, such as soaking in hot soup, high-temperature dry heat disinfection, seed dressing, liquid soaking and other methods, can reduce or resist the occurrence of diseases.

Recommended seed disinfection technology

Soaking seeds with warm water Soak the seeds with warm water of 55°C and stir constantly. Add hot water as the temperature drops, stabilize the water temperature at 53°C-56°C, maintain for 15-30 minutes, and control the fungal diseases of the seed belt.

Acid treatment Use 1% hydrochloric acid solution or 1% citric acid solution to soak the seeds for 40-60 minutes, wash them with clean water, and control the bacterial diseases of the seeds.

Alkali treatment Use 10% trisodium phosphate solution or 2% sodium hydroxide solution to soak the seeds for 30 minutes, then wash them with clean water to prevent virus transmission from the seeds. You can also choose bright shield (metalaxyl + clotrione), Wei Fu (Wei Ling Ling + Fu Mei pairs), pyraclostrobin and other pesticides for seed dressing or soaking.

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