How to control orchid stalk rot?
Stalk rot, also known as blight or blight disease, is currently believed to be the pathogen of the subphylaxis of the subphylum A. fulgidus and Erwinia carotovora. It is an orchid that has a high incidence and has caused serious losses in production in recent years. Diseases can be induced by prolonged periods of high temperature and high humidity.
Production should be mainly prevention. The orchids should be maintained in a clean and well-ventilated environment; the orchids, pots and plant materials in the upper basin must be disinfected; the planted materials must be well drained; and the blue plants should be protected from wounds, and in particular, the insects in the soil should be prevented from infecting the pseudobulbs. Insecticides can be applied to the soil; diseased seedlings and plant materials and pots used in production should be discarded and destroyed.
In the early stages of plant infections, if measures are taken to remove the lesions, the plants can still be preserved. However, because the leaf area is reduced, it is bound to affect the flowering; if it is not timely, the best period of prevention and control is missed, and the condition of the disease is developing very rapidly. Rapidly, the possibility of a diseased plant being cured is extremely low. It can be controlled by fungicides, such as 72% agricultural streptomycin sulfate soluble powder 800 times, 77% wettable powder 1000 times liquid spray (including leaf back, leaf surface, head); 45% prochloraz Emulsion 1500 times + Tetracycline powder 2000 times + 50% Dimethomorph WP 2000 times, Whole plant spray (including leaf dorsal, foliar, head); Antaisheng 500 times + Prochloraz 1500 times + 500 times streptomycin sulfate, whole plant spray (including leaves, leaves, head); research reported 80% ethyl allicin EC, 20% fine methamphetne WP, Lifukang 50% The chlorobromoisocyanuric acid soluble powder also has good antibacterial effect.
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