First, the harm symptoms
Blight is not only harmful to seedlings, but also can harm large seedlings. Diseases generally come later than damping-off. They mostly occur in the middle and late stages of nursery. They are characterized by oval-shaped dark brown lesions on the stem base of the affected seedlings, with burrs. The diseased seedlings in the early stage were wilt during the day and recovered at night, and the lesions gradually became hollow. When the humidity is high, a brownish spider silk mold is produced, but it is not obvious and the diseased part does not have white cotton wool mold. This is different from damping-off disease. After gradually expanding the lesion around the stem one week, and even exposed wood, the diseased part of the final contraction dry, wilting leaves can not restore the original state, the seedlings are not plentiful, gradually dry and dead.
Second, prevention and control technology
The specific prevention and control method is like damping-off. In the event of damping-off and damping-off simultaneously, copper ammonium mixture (a ratio of 1:5.5 of copper sulfate and ammonium bicarbonate may be used, and the mixture may be finely closed for 24 hours) may be sprayed 400 times, or 70% MMX 500 times, or 75% chlorothalonil 600 times, with 25% metalaxyl 1000 times, or 64% antivirus M8500 times, also spray 40% pentachloronitrobenzene 500 times, Or D801500 times liquid, or 70% Duixon 1000 times spray. Excessive humidity can be absorbed by dry soil or ash.
KN95 Face Masks With Valve For Adult
Product Dimesnion: 6.18" x 4.13" /15.70cmx10.50cm
Mask Fabric Material: 5-ply material,100% polypropelyne
Ear Loop Material: 70% polyamide, 30% elastane
when to use: suitable for adults to use daily in a variety of settings such as home, outdoors and work
packaging: 5 pcs of mask in one sealed printed plastic bag to ensure hygiene or 10pcs per box
certification/standard: GB2626-2006(China KN95 standard) and FDA registered
about the manufacturer: Kapanou is china-based healthcare company
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