Calla lily disease prevention and treatment methods: The common diseases of colored calla are mainly bacterial diseases, fungal diseases and insect pests, which are introduced separately below. Bacterial disease Escherichia coli: Epstein's disease is also called soft rot, which is caused by the soft-rotated disease of the carrot, soft rot, Erwinia carrot. The infected leaves and stems turn dark green, have necrotic spots and plaques, secrete mucus, and eventually the plants fall off. The tubers also began to rot and stink. When the plant grows poorly, it can cause infection through some small wounds. These bacteria also secrete enzymes to dissolve the cell wall and penetrate the plant. If the plants are dry, the infected plants and the soil they grow should be carefully removed. It should be noted that those infected tubers should be picked out early and disinfected before planting. Sensitivity to Epstein infection is also different due to differences in breeds. In general, yellow and orange varieties are more susceptible to infection than white and creamy varieties. The best control method is to provide the plant with an optimal growth environment throughout the cultivation, so that it can be developed without interference. The growth environment of colored calla should meet the following requirements: Provide sufficient moisture (not too shallow; re-water when the soil is dry); The drainage performance of the soil should be good to prevent the occurrence of over-wet conditions; Avoid excessive temperature in the greenhouse, especially when the relative humidity is high; Prevent damage to plants and tubers (prevent the damage of the wind to the plants, be careful not to let the herbicides affect the growth of the plants, and be careful when handling and handling); Prevent damage from other fungal diseases and insect pests. (For example, damage caused by Pythium or Rhizoctonia may provide a port for invasion of Escherichia); Do not use nitrogen fertilizer too much, because more than 150kg of nitrogen fertilizer per hectare can easily cause Escherichia coli infection. Tubers should be dried as soon as possible after harvest: if there is a delay in the first week after harvest, it will cause a lot of damage in the future. Fungal disease Pythium: This fungus causes root rot, which limits the absorption of water by plants. Rotation and precise irrigation (and drainage) are important factors in preventing infection. The soil is steam sterilized and treated with a bactericide before planting. Rhizoctonia: This fungus causes damage to the buds of plants near the ground. The bacteria can be treated with methyl chlorophosphorus and fluoroamide to control the bacteria. Penicillium: This bacterium can cause infection when stored in tubers, causing damage to the tubers during storage and storage, especially when the tubers are mechanically damaged, the relative humidity of the storage compartment is too high, or the air flow in the microenvironment is insufficient. Provide adequate air flow to prevent the pathogen from occurring. Tubers can also be sterilized using fungicides such as captan. Botrytis: can occur on flowers and leaves. Prevention of the combination of fungicide and insecticide is necessary every 10 days in open-air cultivation. The infection of Botrytis cinerea appears almost as small spots on the leaves. It is enough to take only one prevention at the end of August or early September. Pests thrips and mites can cause damage throughout the plant's growth. Spray with parathion twice before flowering, and prevent it with acephate or deltamethrin every 7 to 10 days during cultivation. Steel Measuring Tape,Tape Line Measure,Magnet Tape Measure,Rubber Tape Line Measure Shangqiu Hengli Measuring Tools Co.,Ltd , https://www.henglimtools.com