1. Symptoms: the disease mainly damages the leaves of Swiss cheese plant. When the disease occurs, yellow spots of different sizes and shapes will appear on the leaves. Old leaves and new leaves will have obvious symptoms, and the new leaves will have yellow spots as soon as they are unfolded.
2. Prevention and control method: put it in a ventilated and bright place to reduce the incidence. The plants should be sprayed with mancozeb and treated as soon as possible.
1. Symptoms: at the early stage of the disease, the pathogen invades the wound of the leaves, causing the leaves to appear gray brown spots. In the later stage, the disease spots become one after another, causing the leaves to rot and dry up.
2. Control method: once the symptom is found, the diseased leaves need to be removed and burned immediately to avoid infecting other plants. At the same time, 70% tolbutine 1000 fold solution or 50% carbendazim 1000 fold solution should be sprayed for treatment. Pay attention to insect control during the disease.
1. Symptoms: the scale insect is a common pest of the bamboo. It mainly damages its petioles and leaves. The adults of the scale insects will absorb the leaf sap and may induce leaf spot or gray spot.
2. Prevention and control method: the scale insects can be gently removed with a toothbrush during family maintenance. When the pest is serious, the plants need to be sprayed with 1000 times of 40% Omethoate emulsion for treatment.
