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Methods and Technical Key Points for Pest and Disease Control in Glossy Privet (Ligustrum lucidum)
(1) Diseases. The main diseases harming glossy privet are rust disease, brown spot disease, etc. Rust disease: This disease mainly harms the leaves. In the early stage, orange-red spots appear on the leaf surface, and later brown spores appear on the underside of the leaves. Control methods: The growing medium should be disinfected in advance, environmental management should be strengthened, ventilation and light transmission should be maintained, and diseased leaves should be removed when necessary; in the early stage of disease onset in flowering plants, spray with 0.2-0.3 degrees Baume lime sulfur mixture, or 70% mancozeb wettable powder at 500 times dilution, or 70% thiophanate-methyl at 1000 times dilution, or
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What are the control methods for rose gray mold?
Gray mold mainly affects flowers and young shoots. After the flower buds are infected, at first there are small irregular water-soaked spots, and the lesions continue to expand until the entire bud becomes soft and rots. After the diseased buds wither, they hang above the diseased tissue. The pathogen also attacks the shoots from which flowers have been removed. Under warm and humid conditions, the diseased parts produce a large amount of gray mold. Control measures: 1. Remove diseased flowers promptly, remove withered old flowers, and burn them in a centralized manner. 2. For greenhouse cultivation, pay attention to ventilation and avoid excessively high humidity. 3. When disease occurs, spray 65% zineb wettable powder at 600 times dilution, 75% chlorothalonil wettable
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What are the control methods for southern blight in orchids?
Southern blight is caused by the fungus Selerotiumrolfsii, which harms the stem base and roots from seedlings to mature plants, and Cymbidium hybridum is more susceptible to this disease. When the disease occurs, white mycelium can be seen at the stem base, the stem base turns brown, the roots dry up, and a large number of small brown sclerotia form, causing the plant's stem base to soften and die. This pathogen has a very wide host range and causes more serious damage to bulbous flowers and perennial flowers. It also has strong saprophytic ability and can survive for a long time in the substrate or old pots through sclerotia. This fungus can also infect Phalaenopsis
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A Detailed Guide to the Cultivation Techniques and Propagation Methods of Camellia azalea
Camellia azalea, also called azalea camellia, or "false big-head camellia", belongs to the genus Camellia and is an evergreen small tree. It gets its name because its appearance closely resembles an azalea, while it is in fact a camellia. Camellia azalea is an extremely rare camellia species, currently found in the world only in the E'huangzhang Provincial Nature Reserve in Yangchun County, Guangdong Province. Ordinary camellias have both the proud character of plum blossoms and the gorgeousness of peonies, and since ancient times they have been a highly renowned woody flowering plant, enjoying the fine name of "world-famous flower". Yet the beauty of Camellia azalea surpasses that of ordinary camellias.
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To grow tree-stump bonsai well in winter, you need to master these methods
Based on years of experience, the author believes that as long as the following three aspects are done well, tree-stump bonsai will have no trouble overwintering safely. 1. Moderate water, no fertilizer. In winter, watering should follow the principle of preferring dry over wet; do not water until the soil turns white. Water at noon, and it is best to water thoroughly in one go; do not water in the evening, otherwise it is prone to freeze damage. For coniferous types, wax-leaf types, and landscape trees with thick, dense, lush and graceful foliage, spraying water to rinse the leaf surfaces is also very beneficial. Bonsai trees should not be fertilized in winter, but 15 days before the start of winter, along with weeding and loosening the soil and killing pests and diseases,
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Causes and Control Methods of Leaf Yellowing in Winter Red Fruit Bonsai
Winter red fruit flowers easily and has a high fruit-setting rate. Its fruits are entirely red, and the fruiting period can extend to the next year's flowering and leafing stage without dropping. It is an excellent variety for fruit-viewing bonsai and is deeply loved by the people. However, during cultivation, due to the limitation of pot capacity and other influences, the leaves often turn yellow and drop. The main causes of yellowing are as follows: Temperature. Winter red fruit prefers warm and humid conditions and likes light but not excessively strong light. Especially in hot summers, strong direct sunlight will make the air dry and raise the pot soil temperature.
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How do potted miniature chrysanthemums overwinter? Master these overwintering methods
1. Soil burial, or burying the lower part in soil while covering the upper part with dry leaves. Before the frost season arrives, potted miniature chrysanthemums can be kept in their pots or removed from them, and for the burial covering use plain wet soil. First, it is forbidden to use fertilized soil or soil mixed with firewood, grass or leaves, because plain soil will not mold or generate heat that harms the chrysanthemum roots and plants. If the lower part is buried in plain wet soil and the upper part is then covered with dry leaves, even if the leaves become wet from snow they will dry out in the wind after sunny weather, and will not cause great harm to the chrysanthemum plants. Second, it is forbidden to keep watering after burying, because they are already buried in wet soil, and the miniature chrysanthemums lie dormant under the soil, neither growing nor consuming water,
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How to choose bonsai material? A detailed guide to material selection techniques and methods
The selection of tree bonsai material mainly refers to the choice of two aspects: the tree species and the appearance of the stump material. When choosing a tree species, besides considering the factors that make it suitable for bonsai creation, one should also fully take into account the aesthetic tastes and individual preferences of the maker or the viewer (consumer). Because everyone's level of education, appreciation habits, and aesthetic views differ, some love evergreen conifer and cypress species; some prefer deciduous trees rich in seasonal changes; and some are devoted to dazzling flowering and fruiting trees. Therefore, the selection of bonsai tree species must first be people-oriented and fully
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Detailed Explanation of Podocarpus Bonsai Making Methods and Techniques
The styling methods for Podocarpus include the following: 1. Cliff style; 2. Large cliff style; 3. Semi-cliff style; 4. Slanting trunk style; 5. Curved trunk style; 6. Three-and-a-half bend style; 7. Group planting style; 8. Root-over-rock style, etc. In the process of creating the styling, artistic processing must be carried out according to the natural beauty of the seedling itself. Materials such as iron wire, steel wire, and plastic tape can be used for styling. During operation, the iron wire can be selected according to the thickness of the branches. Thicker branches are more difficult to style, so thicker iron wire can be used against the trunk and branches, and plastic
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Detailed Explanation of the Methods and Techniques for Making a Kumquat Bonsai
Kumquats can be propagated by cuttings or grafting. For grafting propagation, citron or trifoliate orange is mostly used as the rootstock, and vigorous-growing kumquat branches are selected as the scion, using approach grafting, which roots easily. Cutting propagation can be carried out from April to June, and the cutting temperature should be above 20%. Cuttings are cut into 7-10 cm lengths, retaining 1-2 leaf stalks, with most of the leaf blade left on the stalk; the upper end of the cutting must be sealed with wax, cutting and inserting as you go. The soil used for pot cuttings should preferably be sandy loam that has been boiled and sterilized. If cuttings are taken in April-May, the cuttings should be inserted 3/5 into the soil, with half shade
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