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Where is the origin of Japanese euonymus? Introduction to the distribution of its main producing areas
Japanese euonymus is a commonly used greening plant, seen everywhere on roads, in courtyards and gardens, so where is the origin of Japanese euonymus? 1. Basic introduction to Japanese euonymus. Japanese euonymus is a shrub or small tree of the Buxaceae family, Buxus genus, 0.6-2.2 m tall, 5 cm DBH
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What are the control methods for stem rot in Japanese euonymus?
Rot is a major disease that Japanese euonymus is prone to, and in severe cases it can cause the entire plant to die. Affected by the special climate of winter and spring, Japanese euonymus does not green up well, and some dead branches appear, weakening the growth vigor of the euonymus and thereby reducing the plant's disease resistance. Some Japanese euonymus is prone to stem rot. One- and two-year-old branches are especially the most severely affected: in the early stage the stem turns brown, the leaves lose their green color, the tender shoots droop, and the leaves do not fall off; in the later stage the affected part of the stem turns black, the cortex shrinks, the inner bark tissue rots, and many tiny black
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Control Methods and Techniques for Leaf Spot Disease in Japanese Euonymus
Japanese euonymus (Euonymus japonicus) is a commonly used evergreen ornamental small shrub in landscaping, with many advantages, but the occurrence of leaf spot disease causes premature leaf drop, resulting in bare branches and even death, seriously affecting the normal growth and ornamental effect of Japanese euonymus. 1. Symptoms: In the early stage of the disease, small yellow spots appear on the leaves, gradually turning yellow-brown, expanding into circular or irregular spots, with a lesion diameter of 2 mm to 10 mm. In the later stage, the lesions become gray-brown or gray-white with darker edges, and many small black dots form on the lesions. In severe cases, the lesions merge into one piece,
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What is the difference between Japanese euonymus (Euonymus japonicus) and Jiaodong euonymus (Euonymus kiautschovicus)?
Japanese euonymus and Jiaodong euonymus are evergreen plants of the same genus but different species, both good materials for hedges. The leaves of both are leathery, and there is no obvious difference in leaf shape, so many people lump them together. The main differences between the two are described below: 1. Plant form. Japanese euonymus has a compact form, the branches are relatively upright, and the natural branching point of the side branches is relatively high; Jiaodong euonymus has a loose form, the natural branching point of the side branches is relatively low, and the branches at the base are prostrate and can take root. 2. Leaves. Although the leaves of both are leathery, the fine serrations on the leaf margin of Japanese euonymus are more
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What are the control methods for gray leaf spot on Japanese euonymus (Euonymus japonicus)?
Control methods for gray leaf spot on Japanese euonymus: 1. Strengthen plant quarantine and use healthy seedlings. 2. Strengthen tending and management, cultivate strong seedlings, and enhance the disease resistance of the plants. 3. In autumn, winter and early spring, thoroughly remove diseased leaves and fallen diseased leaves, and burn them in a centralized manner to reduce the source of infection. 4. In the early stage of the disease, spray the plants once every 20 days with a 200-fold dilution of non-toxic high-fat film, for 3 to 4 consecutive sprays. 5. During the epidemic period of the disease, spray a 500- to 1000-fold dilution of 50% carbendazim or 75% chlorothalonil, used alternately, for 4 to 5 consecutive sprays.
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How to prevent and control leaf spot disease in Japanese euonymus?
Preventing and controlling leaf spot disease in Japanese euonymus: 1. In winter, thoroughly remove diseased fallen leaves, burn them in a centralized manner or bury them deeply, to reduce the source of the disease. 2. Select robust seedlings to create hedges or make euonymus balls. 3. During the disease season, spray 1% Bordeaux mixture, or 50% benomyl wettable powder at 1000 to 1500 times dilution, or 50% carbendazim at 500 times dilution, or 75% chlorothalonil at 500 times dilution, spraying once every 10 to 15 days, for 2 to 3 consecutive times. Alternatively, spraying 200 times diluted non-toxic high-lipid film 4 times is also effective.
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A Detailed Explanation of the Onset Patterns of Fusarium Wilt in Japanese Euonymus
Onset patterns of Fusarium wilt in Japanese euonymus: the pathogen is Fusarium existing in the soil. The fungus mostly invades through wounds on the roots, but can also directly invade the plant. It generally begins to develop in mid-May, with July and August being the peak period of onset; some plants go from onset to death in no more than a week.
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What are the methods for rapidly growing seedlings of Japanese euonymus (Euonymus japonicus)?
1. Propagation: Cuttings are the main method. (1) Cutting time. The traditional cutting time in the north is mostly from late October to early November, that is, dormant-season cuttings. Because the cutting season is late and the temperature is low, roots cannot form in the same year, and transplanting must wait until roots form the following spring. The transplanting time is accordingly delayed, resulting in a short growth period and small growth increment in the year of transplanting. The seedlings can only reach the out-planting standard in spring or autumn of the fourth year in the nursery, meaning it takes two and a half to three years from cutting propagation to out-planting. To achieve rapid seedling production and shorten the nursery cycle,
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Key Techniques for Rapid Autumn Propagation of Japanese Spindle (Euonymus japonicus)
Japanese spindle (Euonymus japonicus) is an evergreen shrub of the Celastraceae family, with dark green, glossy leaves. It is often used as a hedge in landscaping, and the demand for it in greening projects increases year by year. Because most of North China experiences drought and high temperatures in spring and summer and severe cold in winter, conditions are unfavorable for propagating and raising Japanese spindle. Over many years, the author has repeatedly experimented with rapid autumn propagation techniques, achieving autumn propagation, spring transplanting the following year, and producing marketable saplings in a single year, creating relatively good economic returns. The experience is described below: 1. Cuttings are best taken from late August to early October, preferably in mid-to-late September.
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Detailed Explanation of the Symptoms of Anthracnose in Japanese Euonymus
Symptoms of anthracnose in Japanese euonymus: The disease occurs on leaves and tender shoots. The spots on the leaves are oval or round, 3 to 12 mm in size, with a relatively narrow dark brown raised margin, and a grayish-white center. Later, rather coarse round or oval small black dots form in the grayish-white area, sparsely arranged, mostly on the upper surface of the leaves, sometimes arranged in concentric rings; these are the pathogen's acervuli. On the tender shoots, the spots are strip-shaped and grayish-white, with small black dots borne on them, and can also cause the branches to die. This disease often occurs mixed with Japanese euonymus leaf spot, and the same leaf can have two kinds of spots,
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