Prevention and cure of watermelon seedlings in greenhouse

Symptoms of squatting disease: Watermelon seedlings that were just unearthed were first stained with water-stained lesions near the ground, and the lesions quickly turned around the stem for a week, turning brown, and the diseased part softened and collapsed into a linear shape. So that the cotyledons have not withered, the seedlings will fall. The diseased plants after lodging are still green, and the diseased plants are not significantly different from the healthy plants except for the diseased parts. When the disease is serious, the seedlings are not unearthed, and the germ and cotyledons become brown and rot and die. When the humidity is high, a layer of white floc appears in the seedlings and the surrounding soil. When the soil temperature is 10-15 °C, the humidity is high or the night temperature is very low, and the daylight is insufficient, the incidence is heavier; when the temperature is above 30 °C, the incidence is mild or not. Linyi Fertilizer Network Copyright

Linyi Fertilizer Network Copyright

Control method: generally use 72.2% Plex water agent 600-700 times liquid or 75% dikesone soluble powder 1000 times liquid or 64% anti-virus 矾 500-600 times liquid or 68.75% easy to protect 1000-1200 times Liquid or 50% carbendazim 500 times solution or 58% nail cream manganese zinc 600-800 times liquid and other chemicals are sprayed alternately, spray once every 6-7 days, even spray 2-3 times. Linyi Fertilizer Network Copyright

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