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How to Effectively Prevent and Control Cherry Blossom Brown Spot Shot Hole Disease
I. Symptoms: Shot hole disease can be divided into fungal and bacterial types. Cherry blossom brown spot shot hole disease is caused by fungi. It mainly damages leaves and also infects new shoots. It usually starts from the lower part of the canopy and gradually spreads upward. In the early stage of the disease, needle-tip-sized purplish-brown small spots are scattered on the upper side of the leaves, later expanding into round or nearly round lesions 3-5 mm in diameter. The edges of the brown spots are purplish-brown, and grayish-brown mold spots appear on the lesions in the later stage. An abscission layer forms at the edge of the spot, and the lesion dries up and falls off, forming shot holes. II. Disease Pattern: The pathogen of cherry blossom brown spot shot hole disease overwinters in diseased leaves or shoot parts
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What are the control methods for cherry root gall disease?
The gorgeous cherry blossom is deeply loved by people, but it is prone to a deadly root gall disease. This disease mainly occurs on the roots and on the trunk and side branches of the aboveground part of the cherry tree. In the early stage of the disease, the root crown swells into spherical or hemispherical tumor-like growths; young galls are white, soft in texture, and smooth on the surface. Later the galls gradually enlarge, become hard in texture, brown or dark brown, with a rough, cracked surface, and spread gradually from the root crown to the main root, lateral roots, and even fibrous roots, with each node swelling into tumors of varying sizes, causing the cherry tree to grow slowly or even stop growing, and the whole tree dies within 3 to 5 years
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What are the control methods for cherry root cancer?
How to control cherry root cancer? The tumor at the root crown of cherry is caused by a bacterium of the genus Agrobacterium, known as cherry root cancer. The most obvious symptom of this disease is the formation of spherical or hemispherical tumors at the root crown. In the early stage, the tumors are white and soft, then gradually enlarge and become lignified. The surface of the diseased tumors is rough, brown or dark brown. Cherry root cancer often causes poor growth of the aboveground part of the plant, yellowing of leaves, and in severe cases, plant death. The pathogenic bacteria of cherry root cancer survive and overwinter in the surface layer of the tumors of diseased plants and in the soil. When the surface layer of the tumors is decomposed
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Control Methods for Spider Mite Damage on Cherry Blossoms
How to control the damage caused by spider mites to cherry blossoms? The spider mites that harm cherry blossoms are mostly hawthorn spider mites, also known as hawthorn red spider mites. Spider mites mainly damage cherry blossom leaves. In early spring, the adults and nymphs gather on the undersides of leaves, piercing their mouthparts into the leaf tissue to suck sap, causing the damaged leaves to show chlorotic spots; in severe cases, the leaves scorch and drop early. The female adult of the hawthorn spider mite is 0.5 mm long, oval in shape, with a total of 26 setae on its back. The body is red, with winter and summer forms: the winter form is bright red with a silky sheen; the summer form is red when molting, and after feeding
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How to deal with root nodule disease in cherry blossoms? Detailed explanation of prevention and control methods
Last spring, when planting cherry blossom seedlings, the author found that the roots of some plants had nodular growths. Their symptoms were varied in shape and size, brown to dark brown in color, with rough surfaces, and some showed cracked patterns. The affected areas were on the ground or near the root crown at ground level, and at the graft union between the rootstock and the scion. Affected plants showed poor growth and stunting. After identification and diagnosis, the author believes this is root nodule cancer disease, and the seedlings should be treated before planting. The methods are: 1. For suspicious seedlings, soak the roots in a 1% copper sulfate solution for 5 minutes,
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What are the medicinal effects of Japanese cherry blossom?
[Medicinal name]: Japanese cherry blossom [Source]: The bark of the dicotyledonous medicinal plant Japanese cherry blossom, of the Rosaceae family. [Efficacy]: Diffuses the lung and relieves cough. [Indications]: Used for cough and fever. [Nature, flavor and meridian tropism]: Pungent, neutral. Lung meridian. [Usage and dosage]: Oral administration: decocted in water, 3-9 grams. [Distribution of animal and plant resources]: Native to Japan, now cultivated throughout our country. [Latin name]: Japanese cherry blossom PrunusyedoensisMatsum. [Textual research]:
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Detailed Explanation of Key Points of Autumn Cultivation and Management Techniques for Cherry Blossoms
Autumn basal fertilizer application: Generally, basal fertilizer is applied in early September, when the fertilizer has enough time to decompose and can be absorbed and utilized by the tree before dormancy. At this time, the roots cut by fertilization can heal quickly and sprout a large number of absorbing roots, improving the tree's absorption and utilization rate of fertilizer. The types of fertilizer applied are mainly decomposed farmyard manure, combined with a small amount of chemical fertilizer. Generally, 50 to 75 kg of soil and miscellaneous manure is applied per young tree. Autumn basal fertilizer should not be applied too deep; 40 to 50 cm is appropriate. Young trees can use the trench application method, and vigorous trees can use the broadcast application method. If the tree is found to have
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Winter cherry blossoms are light and delicate, a brilliant sight in winter
Winter cherry blossom (Cerasus cerasoides), also known as Gaopen cherry and winter begonia, belongs to the Rosaceae family. It blooms in autumn and winter, with pink flowers; when in full bloom, the whole tree is covered in a profusion of blossoms, dazzling and eye-catching; after flowering, purple-red young leaves continue to grow, which can enrich the color changes of winter garden plants, adding a gorgeous natural landscape to the flower-scarce winter, and is of great significance to the winter landscape of cities in subtropical regions. Winter cherry blossom is a deciduous tree, reaching 3-10 m tall. Leaves alternate, ovate-lanceolate or oblong,
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Is the horse cherry blossom a rhododendron? Introduction to Rhododendron delavayi
Evergreen shrub to tree, 2-15 m tall, up to 40 cm in diameter at breast height, bark grayish brown, thick, peeling in irregular flakes. Leaves leathery, oblong-lanceolate, densely covered on the underside with grayish white to light brown spongy thin tomentum. Flowering from February to May, terminal spherical umbels with 10-20 flowers, corolla bell-shaped, 3.5-5 cm long, fleshy, deep rose red, stamens 10, ovary 10-locular. Fruit ripens from October to November. Distributed in Yunnan, Guizhou, Guangxi and other provinces and regions, and also in Myanmar.
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Timely Control of White Peach Scale on Cherry Trees
White peach scale on cherry trees is mainly found in cherry-growing areas and occurs commonly. Because the current climate is suitable and field humidity is relatively high, it has occurred quite severely in some fields. The damage has already caused leaves to basically fall off, and the pest population is extremely dense; up close and from a distance it looks completely white. It is estimated that the first-instar nymph stage of white peach scale should be around the end of September. The first-instar nymph stage is the best time to carry out spray control. Growers should strengthen field inspections and apply pesticide control immediately if infestation occurs, keeping the pest population base below the allowable economic level. Control methods
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