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Symptoms and Control Methods of Polygonatum Leaf Spot Disease
The disease begins in April to May. On affected leaves, elliptical or irregular lesions first appear at the leaf tip, with brownish outer edges and pale white centers; the disease spreads downward from the lesions, causing the leaves to wither and die. The disease is more severe during the rainy season. Control methods: 1) After harvest, clean the field and garden, gather the dead branches and diseased plant debris and burn them to eliminate the overwintering pathogen. 2) Before the disease occurs and in the early stages, spray 1:1:100 Bordeaux mixture, or 50% Tuzet (thiram) 1000x solution, once every 7 to 10 days, for 3 to 4 consecutive sprays.
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Methods and Technical Key Points for Pest and Disease Control in Polygonatum (Solomon's Seal)
Diseases include black spot disease, in which irregular yellowish-brown spots appear on the leaves starting from the leaf tip, with a purplish-red edge at the boundary between the diseased and healthy tissue, after which the spots spread downward and the leaves turn withered and yellow. For control, spray with a 50% Tuzet (thiophanate) 1000-fold dilution, applying the spray once every 7-10 days for 2-3 consecutive applications.
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Methods and Technical Key Points for the Prevention and Control of Pests and Diseases in Polygonatum
(1) Black spot disease occurs mostly in spring, summer and autumn, and damages the leaves. Control methods: clean the garden at harvest time to eliminate diseased plant residues; in the early stage, spray 1:1:100 Bordeaux mixture once every 7 days, for 3 consecutive times. (2) White grubs damage plants in the larval stage, attacking the roots, biting off seedlings or gnawing the seedling roots, causing broken seedlings or cavities in the roots, and the damage is severe. Control methods: seed dressing with 75% phoxim emulsifiable concentrate at 0.1% of the seed amount; or during the field occurrence period, drench with 90% trichlorfon at 1000 times dilution.
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What to Do When Pepper Tree Leaves Turn Yellow and Drop? Common Disease Identification and Control
When watering the pepper tree, you must pay attention to the amount and frequency. What are the common diseases of the pepper tree? What to do when leaves turn yellow and drop: What are the common diseases of the pepper tree: Actually, the pepper tree has relatively few diseases, and anthracnose is the common one. In the early stage of anthracnose,
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Oleander Planting Methods and Pest and Disease Control Tips
Oleander is a flowering plant that loves fertilizer and water, and prefers neutral or slightly acidic soil. So how do you grow oleander? How do you control oleander pests and diseases? How to grow oleander: Pruning. The upper branches of oleander have a characteristic of splitting from one into three. You can prune and shape it as needed. If you want a three-fork nine-top shape, you can cut off a portion from the top of the three forks.
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What diseases can cockscomb cure? What is the market price per jin of its seeds
Cockscomb (Celosia cristata) is an extremely beautiful flower, and it is extremely well suited to being grown in courtyards. So what diseases can cockscomb cure? What is the market price per jin of its seeds: What diseases can cockscomb cure: Although there is damp-heat in the body and external invasion of damp pathogens, when liver qi is stagnated, the liver wood will overcome the spleen earth
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What are the common pest and disease control methods for goldenrod?
Common pest and disease control methods for goldenrod
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Want to treat high blood pressure or restore your eyesight? Which plants can treat chronic diseases?
Plants are something many people love, and most households grow quite a few of them. So which plants can treat chronic diseases: 1. Heat-clearing and wind-dispelling types: the fragrance of chrysanthemums and cloves can dispel wind and clear heat, with fairly good effects on headaches and viral colds.
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How do rejected fruit and vegetables get a new lease of life? A visit to the UK
A visit to the UK - giving rejected fruit and vegetables a "rebirth"
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