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Be Alert to the Harm of a New Watermelon Virus, Growers Should Pay Attention to Early Prevention and Control
A quarantine viral disease, Cucumber green mottle mosaic virus, has been detected. Taking precautions is warranted, but pulling up plants and replanting without any reason is unnecessary. Here, we introduce this newly emerging viral disease. Cucumber green mottle mosaic virus has a relatively narrow host range, occurring mainly on cucurbits...
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How to prevent and control garlic soft rot? The key is to act early
Garlic soft rot is a bacterial infection disease, and the pathogen is Erwinia carotovora, which mainly reinfects through the pathogen on diseased residues in the soil. Autumn-sown garlic begins to develop the disease from November. The disease is severe in fields with low-lying terrain, heavy rainfall and watering, poor drainage, and high field humidity, and in cultivation using the shaded ditch and sunny bed method...
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How to Control Onion Maggots in Garlic in Winter? A Full Breakdown of Practical Methods
Thoroughly remove plant residues. Onion maggots have a strong attraction to diseased and dead plant residues, especially rotting garlic plants, so at garlic harvest the garlic residues in the field, at the field edges and along roadsides should be completely removed and destroyed, to reduce the food source for the maggots and at the same time reduce the number of insects remaining in the field. Regulate water and fertilizer and the sowing schedule to disrupt...
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Control Methods and Technical Key Points for Gray Mold in Greenhouse Chinese Chives
When humidity inside a greenhouse for Chinese chives is high, gray mold is likely to occur. After the disease develops, pale grayish-brown to white spots gradually appear on the leaves from the tip downward, on both the upper and lower surfaces; after expanding, they become elliptical or spindle-shaped lesions and merge with each other into large dead patches. When air humidity is above 85% and the temperature is 15°C~20°C, warm and humid conditions favor the occurrence of this disease.
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Occurrence Patterns and Control Methods of Kiwifruit Gray Mold
Kiwifruit gray mold mainly occurs during the flowering stage, young fruit stage and storage period of kiwifruit. In severe years, the incidence rate in orchards and during storage can reach more than 50%. Kiwifruit gray mold has become one of the main diseases affecting the healthy development of the kiwifruit industry. 1. Symptoms When young fruit (late May to early June) is affected, residual stamens and petals are densely covered with gray spores. At the initial stage, the fuzz on young fruit turns brown, the skin is infected, and in severe cases it can cause fruit drop. Contaminated stamens and petals attach to leaves and form concentric ring lesions centered on them; the lesions expand and leaves drop. If rain occurs, the disease develops more severely. After fruit is affected, gray-brown mycelium and spores form on the surface, followed by black sclerotia. During storage, fruit is easily infected by diseased fruit.
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Diagnosis, Identification and Control Methods of Gray Mold in Chinese Chives
How to control gray mold in greenhouse Chinese chives. Gray mold in Chinese chives, also known as "white spot leaf blight" and "white spot rot", is the main disease of greenhouse Chinese chives. It should be controlled early to reduce losses and increase profits. The occurrence conditions and control methods of gray mold in Chinese chives are briefly summarized as follows: 1. Occurrence conditions 1. Chi...
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What are the control methods for gray mold in Chinese chives?
In protected cultivation, fumigate with 10% Procymidone smoke agent at 250 g per mu; for foliar spraying, use 50% Procymidone wettable powder at 1000 times dilution, 2% Wuyimycin (BO-10) at 150 times dilution, 40% Huimeiwang at 500 to 800 times dilution, 10% Polyoxin at 500 to 700 times dilution, and 50% Vinclozolin at 1200 to 1400 times dilution.
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How to treat gray mold in Chinese chives? Key points of pollution-free control techniques
(1) Symptoms and epidemic patterns The disease mainly affects the leaves and shows 3 types: the white-spot type, in which water-soaked grayish-white spots form on both the front and back of the leaves, oval or spindle-shaped, with pale yellow margins; later the lesions enlarge into large dead patches, causing half a leaf or the whole leaf to die. In humid conditions, a sparse gray mold layer forms. The dry-tip type occurs...
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What are the control methods for wireworms in Chinese chives?
Apply a root drench with 50% phoxim at 1000x dilution, 80% trichlorfon at 1000x dilution, 50% phoxim-cypermethrin emulsifiable concentrate at 4000x dilution, 20% fenvalerate at 300x dilution, or 2.5% deltamethrin at 3000x dilution. Alternatively, before sowing or transplanting, mix the above agents with poisoned bait and broadcast it, or use a seed dressing agent for coating.
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How to identify and control kiwifruit branch blight
Kiwifruit branch blight, also called water-loss branch blight, is a physiological disease caused by climatic factors. It refers to the sudden wilting and death of fruiting canes or vegetative canes when the fruit tree has not suffered artificial fertilizer damage or pesticide damage, nor pathological root rot, branch rot, canker, and other such conditions. 1. Disease symptoms...
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