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What to Do When Impatiens Gets Mosaic Disease? A Detailed Guide to Prevention and Control Methods
Symptoms The disease occurs at the root crown. At first the root crown turns brown and constricts, later causing damping-off symptoms. Generally, in flower beds during the plum rain season, and when potted flowers are too wet, the disease occurs more frequently. Pathogen PhytophthoranicotianaevanBredadeHaanvar.parasitica(Dastur)Waterhouse Transmission routes and disease conditions The pathogen overwinters in seeds or as mycelium and oospores with diseased plant debris in the soil, and spreads through wind
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Symptom Identification and Control Methods of Impatiens Green Petal Disease
Also known as balsam green-change disease, it is sporadically distributed in Jiangsu, Anhui, Hebei, Beijing and other places. It mainly damages the floral organs of Impatiens balsamina (garden balsam), causing them to lose their normal ornamental value. Symptoms: affected plants mainly show flowers turning into leaves, that is, the petals change from normal pink to green, slender like leaves; some petals become leaf-like, retaining only a small amount of red. New plants of the current year show symptoms after blooming. In the high-temperature summer season, the flowering period is shorter than normal, and the inner petals of the corolla quickly turn brown, die and fall off. Under the same cultivation and management conditions, diseased plants are shorter than healthy plants, and the leaves often curl upward from the edges, not
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How to prevent and control garden balsam ring spot disease? A detailed guide to practical methods
Symptoms The disease occurs on leaves. Large round lesions with dark brown edges form. The surface of the lesions shows distinct concentric rings. In the later stage, the center of the lesion turns grayish brown, with scattered small black dots. Pathogen: Ascochyta phaseolorum Saccardo, belonging to the genus Ascochyta, subphylum Deuteromycotina. Transmission route: The pathogen overwinters and oversummers on diseased plant debris as pycnidia and perithecia. Conidia can spread via wind and rain. Conidia produced on later lesions continue to spread and cause secondary infections.
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Control Methods for Japanese Wax Scale Infestation on Boxwood
One generation occurs per year, with fertilized female adults overwintering on twigs and shoots. Morphological characteristics: female adult, wax shell grayish white or slightly flesh-red, oval. Male adult, body dark brown or brown, head and thoracic dorsal plate darker. Nymph, wax shell ovate to elliptical, dorsum slightly raised. Control methods: (1) Quarantine measures: when purchasing seedlings from other locations, plant quarantine procedures must be strictly implemented to prevent artificial spread of the pest. (2) Strengthen garden maintenance and management: through maintenance and management, create environmental conditions unsuitable for scale insect survival. Implement crop rotation, clean up the garden promptly
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Detailed Explanation of the Methods and Techniques for Creating Boxwood Bonsai
(I) Botanical Knowledge Belongs to the family Buxaceae, genus Buxus. Evergreen shrub or small tree, with densely growing branches, four-angled twigs, and foliage clustered and rising upward. Leaves opposite, leathery, elliptical or obovate, apex rounded or slightly notched, base cuneate, surface bright green, underside yellow-green. Flowers clustered in leaf axils or at branch tips, opening in April, yellow-green. Capsule ovoid. Main species and varieties 1. Buxus bodinieri, also known as sparrow-tongue boxwood. Evergreen dwarf shrub, branches densely clustered. Leaves opposite, leathery, spatulate or oblanceolate, surface
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What are the control methods for the box tree moth (Glyphodes perspectalis)?
Lepidoptera, Pyralidae (snout moths). It is one of the leaf-eating pests on hedge plants such as Japanese boxwood (Buxus microphylla) and Chinese boxwood (Buxus sinica). It mainly damages the top shoots and leaves of hedge plants, causing bare branches and leaves, greatly reducing their greening and ornamental value. In recent years, the damage has been increasing year by year across the country. Distribution and damage: distributed in Sichuan, Guizhou, Hubei, Hunan, Guangdong, Fujian, Jiangxi, Zhejiang, Shanghai, Jiangsu, Shandong, Hebei, Shaanxi, Qinghai, and Xizang; it damages boxwood (Buxus), Chinese boxwood, box-leaf euonymus (Buxus bodinieri), holly (Ilex), and winged euonymus (Euonymus). The larvae spin silk to bind leaves together into nests and feed on
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Identification and Control Methods of the Box Tree Moth
The box tree moth Diaphania perspectalis (Walker), also known as the box tree black-margined pyralid moth, belongs to the order Lepidoptera, family Pyralidae. [Distribution and damage]: It is distributed in Shaanxi, Hebei, Jiangsu, Zhejiang, Shandong, Shanghai, Hubei, Hunan, Guangdong, Fujian, Jiangxi, Sichuan, Guizhou, Xizang and other places. It damages boxwood, littleleaf boxwood, Lushan boxwood, Korean boxwood, etc. The larvae often connect surrounding leaves with silk to form a temporary nest, in which they feed; when the infestation is severe,
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What are the control methods for the box tree webworm (Glyphodes perspectalis)?
It damages boxwood, boxwood (Buxus sinica), large-leaved boxwood, small-leaved boxwood, Japanese boxwood, spoon-leaved boxwood, Korean boxwood, holly and others. The larvae spin silk to bind leaves together and make nests, damaging the host plants. The damaged leaves first show yellow dead spots, and later the entire leaf falls off. They spin silk to bind the leaves and the damaged fallen leaves together, so that the leaves cannot spread out and growth and development are severely affected; when the damage is severe, the whole plant dies. In Shanghai it has 3 to 4 generations a year, with serious overlapping of generations; it becomes active in March of the following year, begins pupating in mid-April, begins emerging in late April, and the first generation
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Boxwood Ball Shaping and Pruning Methods and Techniques
The following content guides nursery growers on how to prune a potted boxwood into a ball about 30 cm tall. Boxwood planted in the ground can also be pruned using the same method. Materials needed: 1 unpruned potted common boxwood (Buxus sempervirens), about 45 cm in height and circumference, growing densely and evenly. Sharp pruning shears. Pruning method: 1. In early summer, place the potted boxwood in a spot with plenty of light. 2. Carefully observe and estimate how many times you need to prune to get a boxwood about 30 cm
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How to grow azaleas at home? A detailed guide to home care methods
Azaleas are widely distributed in China, from the Changbai Mountains in the northeast to the Yunnan-Guizhou Plateau and the Tibet Plateau in the southwest. There are more than 800 species of plants in the genus Rhododendron worldwide, and China has more than 600 of them. Their general ecological habit is to grow in shaded places in high mountains, with their root systems growing in acidic soil formed from the remains of dead branches and fallen leaves; because the altitude of their places of origin is relatively high, summers are cool, the air humidity is also quite high, and they are not exposed to dry winds. To grow azaleas well at home, the main method is to artificially create conditions close to
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