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What are the control methods for powdery mildew on Japanese euonymus?
The disease damages leaves and twigs. The lesions are mostly distributed on the upper surface of the leaves
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How to prevent and control pests and diseases of Photinia × fraseri? Three major methods explained in detail
These diseases often cause large-scale death of Photinia × fraseri in a short period, bringing serious losses to seedling growers
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How to prevent and control pests and diseases on yew? A detailed guide to prevention and control methods
Greenhouse cutting seedlings of Southern Chinese yew (Taxus wallichiana var. mairei) have a total of 7 pests and diseases throughout the entire growing period
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Cherry Blossom Pest and Disease Control Methods and Key Points for Summer and Autumn Management Techniques
1. Disease control Leaf blight: (1) Remove and burn diseased leaves, spray Bordeaux mixture before bud break; (2) From May to June, spray 65% zineb wettable powder at 500 times dilution, once every 7 to 10 days, for 2 to 3 consecutive sprays. Brown spot disease: (1) Strengthen cultivation management, create good ventilation and light conditions
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Symptom Characteristics and Control Methods of Carnation Bud Rot
Identification points: Carnation bud rot affects flower buds; affected buds fail to open, part of the outer petals turns light brown, and the buds become deformed; when a bud is cut open, the interior is tea-brown, causing the flowers to lose their commercial value; most petals of affected flowers become soft and rotted. Occurrence characteristics: The pathogen is a deuteromycete fungus
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Identification and Control Methods for Diseases of Alocasia macrorrhiza
Leaf spot disease: Leaf spot disease can be treated by spraying the leaf surface with an 800-fold dilution of chlorothalonil or carbendazim, for 2-3 consecutive applications, once every 7 days. Anthracnose: Anthracnose requires spraying the leaf surface with a 500-fold dilution of 75% thiophanate-methyl, once every 7 days, for 2-3 consecutive applications, which can basically bring it under control
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What to Do When Money Tree Leaves Turn Yellow? Common Pests and Diseases and Their Control Methods
1. Leaf Spot Disease: Leaf spot disease is a fungal disease. In the early stages of infection, small brown spots appear on the leaf margins or leaf tips. In the later stages, the lesions turn gray or grayish-brown, and under humid conditions, small black dots develop on the affected areas. Control methods: 1. If the branches and leaves of the money tree are too dense,
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What are the pest and disease control methods for Alocasia macrorrhizos?
The most common pests and diseases of Alocasia macrorrhizos are red spider mites and aphids. The symptoms are yellowing leaves, white spots on the surface, a weak and spindly plant, and webbing on the leaves. For treatment, you can wipe the leaves with a cloth dipped in mild soapy water, cleaning both the underside and the top, then rinse with clean water. For large pots, you can use a spray bottle to clean them.
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What are the control methods for leaf spot disease in lucky bamboo?
Symptoms: In the early stage of the disease, brown spots appear with yellow edges; the spots gradually expand and become round, gray in the center, dark brown at the edges, and yellow around them; under humid conditions, black granular bodies appear on the spots. Control methods: Prevent plants from being planted too densely and maintain ventilation and light penetration. When growth is too dense, prune in time, and remove diseased leaves promptly when found
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Disease Prevention and Control Methods and Technical Key Points for Hamelia patens
First, the most common sooty mold on Hamelia patens is caused by aphids and scale insects, so once we find the root cause we can first carry out pest control, and then prune the plant; second, for the treatment of leaf spot disease and brown spot disease, we can spray carbendazim and chlorothalonil in the early stage of the disease
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