Disease control of Fortune Tree
As a star player in family green planting, Fortune Tree is deeply loved for its tall and straight plant type and beautiful meaning. However, many flower friends have found that carefully maintained Fortune trees often have diseases such as yellowing of leaves and rotting of roots. Only by mastering scientific prevention and control methods can your treasure tree remain green forever. Analysis of the key points of root rot prevention and control disease identification characteristics The root rot is known as the number one killer of Fortune Tree. It is initially characterized by soft roots and brown patches on stems. When the condition worsens, mucous-like rot will appear at the base of the plant, accompanied by a pungent sour smell. If not handled in time at this time, the entire plant will wilting and die within 3-5 days. Graded treatment plan For the initial symptoms of slight yellow leaves, it is recommended to immediately spray Sukeling (concentration 1:800) for surface disinfection. Moderate infections need to be removed from the pot: After cutting off the black roots, soak them in potassium permanganate solution (0.5%) for 30 minutes, and dry them in the shade for 24 hours to replace new soil for re-planting. For severely rotted plants, it is recommended to intercept healthy branches for cuttage propagation. Soil management regulations New soil needs to be disinfected by high temperature steam. A three-step sterilization method is implemented after planting: the roots are irrigated with Prick (20ml/plant) in the first week, zinc-manganese meodal (1:1000) in the second week, and chlorothalonil smoking agent is used in the third week. Fumigation. Daily maintenance keeps the basin soil in a slightly dry state, and monthly supplementation of Bacillus subtilis to enhance disease resistance. The disease identification guidelines for the systematic prevention and control strategy of leaf blight are different from ordinary yellow leaves. Leaf blight will form irregular disease spots on the leaves. They are yellow-white translucent at the beginning, and turn grayish brown in the later stage and produce black conidial piles. The disease spreads at times faster when humidity is>75%, and temperatures are 25-28℃. Environmental control measures keep the temperature difference between day and night less than 8℃, and use ceramsite paving to reduce the humidity of the substrate. Install a circulating fan to ensure air circulation and allow the moisture trapped on the leaves to evaporate within 2 hours. When using humidifiers in the northern heating season, ensure that the leaves are free of condensed water at night. Drug prevention and control calendar Implement preventive spraying in the southern plum season: alternating use of carbendazim (1:1000) and mancozeb (1:1200) every week. The diseased leaves were removed immediately when the diseased spots were found, and difenoconazole (1:1500) was sprayed for 3 consecutive days. When used with foliar fertilizer, the combination of iron chelate + brassinolide is recommended to increase the thickness of leaf cuticle.
By establishing a disease early warning mechanism, combining environmental regulation and scientific medication, the chain of disease transmission can be effectively blocked. It is recommended to conduct a monthly root health check, use bamboo sticks to detect the humidity of the pot soil, and maintain a watering rhythm of "seeing dry, seeing wet". Remember that prevention is better than treatment, and a healthy fortune tree is the best feng shui tree!