Cauliflower, cabbage and other cabbage vegetables are in the seedling stage in autumn. At this time, serious diseases, pests and weeds occur in hot and rainy weather, and measures should be taken to prevent and control them as soon as possible.
Diseases: The main diseases occurring during the seedling stage are black rot and downy mildew. The prevention and treatment often adopts the method of soaking the seeds in the warm soup and mixing the seeds to treat the seeds, that is, soaking the seeds in warm water of 50° C. for 10 minutes, and removing them by seed dressing with 0.4% of the seed weight of 50% thiram or 75% chlorothalonil. The severe field of downy mildew at the seedling stage can be controlled by 58% metalaxyl mancozeb 600 spray.
Pests: The pests that injure cabbage vegetables during the seedling stage mainly include Spodoptera exigua, Spodoptera litura, and pupa. Where conditions permit, insect-proof nets can be used to cover nursery and prevent pests from entering. Pests were found and sprayed 2-3 times with high (8% chlorfluazuron high-fluorine emulsifiable concentrate) 1500 times or 10% divided by 2000 times. Take 1-2 days before transplanting.
Weed damage: Soil treatment before seedling after sowing is an important measure to effectively prevent grassroots damage. Generally after sowing cover soil, use 20% Napropamide 150-200 ml per acre, or 33% Shida make up 60-80 ml, or 96% Jinduer 40-50 ml, add water and spray 50 kg to control.
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