Cracking prevention method of celery petiole
The main manifestation is that the stem base is split together with the petiole. The first cause of the disease is caused by boron deficiency; the second is due to the growth retardation caused by low temperature and drought conditions; in addition, the sudden high temperature and humidity cause the plants to absorb too much water, causing the tissue to fill water quickly and also cause cracking. Control methods: First, apply sufficient decomposed organic fertilizer, apply 1 kg of borax per 667 m2, and fully mix with organic fertilizer; second, foliar spray 0.1%-0.3% borax aqueous solution. Pay attention to uniform watering in management.
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