Prevention of Leaf Spot Disease of Celery
Celery leaf spot disease, also known as early blight, spot disease, from the seedling stage can be the disease, the main damage to the leaves, petioles and stems can also be victimized. On the leaves, yellowish-green water immersed in the spots, expanded to a round or irregular shape, size 4-10 mm, central grayish brown lesions, borders slightly darker boundaries are not clear, serious lesions expand convergence synthesis, The above diseased parts grow a layer of gray and white mold
Control methods: In the initial stage of disease, 58% Saifu 600 times liquid or bacteria asepsis 10ml can be sprayed. Under protective conditions, 58% Saifu + Chunyu No. 1 can be used, or 45% chlorothalonil smoke agent can be used, 300g per mu. Apply it once every 9 days.
Another spray on the celery seedling spring rain on the 1st can prevent the occurrence of the disease, the effect is obvious.
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