The main diseases of geranium are: 1 Leaf spot. In the early leaves, small, round or irregular brown spots appear on the leaves, which gradually expand to dark brown or russet spots. In severe cases, the entire leaf is covered with lesions until it dies off; its stems are The branches are also black, shrinking and rot, and even the leaves on the stems are dead and dead, leaving only the top few leaves. Preventive measures: a. The density of the greenhouse cultivation should not be too large, it is necessary to pay attention to frequent ventilation; b. Watering to avoid pouring on the plants and to avoid water droplets; c. Avoid cutting in the cuttings, such as diseased leaves And diseased branches should be promptly cut off and burned; d. Spray 200 times equal amount of Bordeaux mixture every 2 weeks during the period of high temperature and high humidity for 3 consecutive times. 2 gray mold. The disease is mainly caused by excessive watering. If it is cold and wet, the disease is more central. First, the flowers are damaged, the edges of the petals are darkened and withered. If the air humidity is too high, a layer of gray mold will appear. The flowers will kink together and the damaged petals will fall on the leaves, which will also cause the onset of the leaves. A water-stained brown spot appeared on the leaf surface. After drying, it was covered with a light gray layer. Prevention and control measures: a. timely removal of diseased leaves and diseased flowers, avoid feeling water on the plants when removing water, timely removing the leaves and flowers, always pay attention to ventilation and light transmission; b. timely use 75% of chlorothalonil 500 Liquid spray, 3 times in a row. Fryer Machine,Deep Fryer,Electric Fryer,Industrial Air Fryer Guangzhou New Power Catering Equipment Manufacturing Co.,Ltd , https://www.gznewpower.com