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Prevention and control methods of spider plant anthracnose

来源：花匠小妙招时间：2026-02-19 13:07

Core tips: Prevention and control method of spider plant anthracnose - spider plant Chlorophytum capense (L.) 0. Kuntze, also known as sclerophylla spider plant and fishing orchid, is a perennial evergreen herb of the lily family, mainly distributed in southern provinces and regions, and is also planted indoors in the north. Anthracnose is an important disease on spider plants, which occurs widely in various places and is seriously harmful. Spider plant

Prevention and control method of spider plant anthracnose - spider plant Chlorophytum capense (L.) 0. Kuntze, also known as sclerophylla spider plant and fishing orchid, is a perennial evergreen herb of the lily family, mainly distributed in southern provinces and regions, and is also planted indoors in the north. Anthracnose is an important disease on spider plants, which occurs widely in various places and is seriously harmful.

Symptoms of anthracnose of spider plant: mainly harmful to leaves, and can also infect fruits. The affected leaves appear yellowish-brown slightly sunken spots in the early stage, and gradually expand into dark brown round or semicircular spots. If the germs invade from the leaf edge, the lesions are mostly semicircular or irregular; If the disease occurs from the tip of the leaf, the lesion extends downward to form a withered leaf tip, and the dead part can reach 1/5-3/5 of the leaf; if it is harmed from the base of the leaf, the diseased leaves dry up quickly, and the whole plant dies seriously. The later lesions are grayish-brown, the center is grayish-white, and there is a black-brown band on the edge, sometimes whorled-shaped, with small black spots on it, which is the conidia disc of the pathogen. Lesions on the fruit are irregular or long, black-brown.

Anthracnose pathogen of spider plant: Colletotrirchum orchidearum is called orchidac, which belongs to the subphylum Fungi of the semi-known fungus. conidia disc cushion-like; The bristles are dark and have several diaphragms, 50-100×3-5 μm in size; Conidia stalks are short and unbranched; Conidia are cylindrical, 12-20×4.5-5.9 μm in size. The optimal development temperature of the bacteria is 22-26 °C, and the growth stops below 15 °C or above 38 °C.

Anthracnose pathogenesis characteristics: The fungus overwinters on diseased leaves or diseased leaves of plants with mycelium and conidia discs. Spores are formed in late spring of the following year and spread by wind and rain. It mainly invades from wounds, but can also directly invade young leaves. Incubation period 14-20 days. The disease can occur from March to November every year, with the peak period from April to June, and the heat in summer and autumn will subside. High humidity and sultry, the weather is sunny and rainy, and the ventilation is poor.Flower potsFactors such as waterlogging, overcrowded plants, friction damage, and severe apricot infestations will aggravate the occurrence and spread of the disease.

Anthracnose prevention and control methods of spider plant

1. Agricultural control: reasonable and dense planting, pay attention to ventilation and ventilation; Scientific formula fertilization, increase phosphorus and potassium fertilizer, improve plant disease resistance; Timely irrigation, strictly prohibit flood irrigation, and timely drainage after rain to prevent the humidity in the field from increasing significantly; If diseased plants are found, they should be removed in time, and the pastoral area should be cleaned after harvest to reduce the source of bacteria in the coming year.

2. Chemical prevention and control: spray 1% Bordeaux liquid or 27% high-fat film emulsion 100-200 times liquid protection before the onset of the disease. During the onset of the disease, 75% chlorothalonil 1000 times liquid, 20% tricylazole 800 times liquid, and 50% anthrax Fumei 600 times liquid can be used. 1 time every 7-10 days, many times in a row. Fungicides should be used in rotation for better results.