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How to prevent and control white rust in water spinach, all in one article
1. Practice a 2- to 3-year crop rotation with other vegetable varieties. 2. Before sowing, mix the seed for sterilization at a ratio of 300 g of 35% metalaxyl per 100 kg of seed; 3. In the early stage of the disease, spray with 50% copper metalaxyl wettable powder at 6000 to 7000 times dilution, or with 72.2% propamocarb aqueous solution at 8000 times dilution, once every 7 to 10 days...
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What are the control methods for white rust in water spinach?
Because of the high temperature and frequent rain after early summer, water spinach is prone to white rust. Once the disease occurs, it not only reduces the yield but also affects the quality. 1. Symptoms At the early stage of the disease, spots first appear on the upper surface of the leaves as pale yellow to yellow spots, which later gradually turn brown. The spots are relatively large. On the underside of the leaves, white raised blister-like pustules form, nearly round or elliptical to irregular, sometimes coalescing into larger pustules. Later, the pustules rupture and release white sporangia. When the leaves are severely damaged, the spots are dense, the diseased leaves become deformed, and the leaves fall off.
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What to do when water spinach gets white rust? Detailed control methods
①Use disease-free seeds or treat seeds with 0.3% of seed weight of ridomil-mancozeb seed dressing. ②This disease is limited to infecting Convolvulaceae vegetables; after 2~3 years of crop rotation, the control effect is good. ③Pay attention to field drainage and thin out plants for ventilation. ④At the early stage of the disease, spray 48% metalaxyl-mancozeb wettable powder, 40% metalaxyl-copper wettable powder...
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What chemicals are used to control white rust in water spinach?
First, implement a 2- to 3-year crop rotation with other vegetable varieties. Second, before sowing, dress the seeds for sterilization at a ratio of 300 g of 35% metalaxyl per 100 kg of seeds; third, in the early stage of the disease, spray with 50% copper metalaxyl wettable powder at 6000 to 7000 times dilution, or with 72.2% propamocarb aqueous solution at 8000 times dilution, once every 7 to 10 days...
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What are the key points for pollution-free control of white rust in water spinach?
Symptoms: The lesions appear on the underside of the leaves. On the upper surface of the leaves, pale yellow to yellow spots first appear, later turning brown. The lesions expand, and on the underside of the leaves white raised blister-like spots form, nearly round or oval to irregular in shape, sometimes merging into larger blisters. In the later stage, the blisters rupture and release white, non-functional sporangia. When the leaves are severely affected, the lesions are dense and the diseased...
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What to Do When Water Spinach Gets White Rust? A Detailed Guide to Prevention and Control Methods
First, implement a 2-to-3-year crop rotation with other vegetable varieties. Second, before sowing, dress the seeds for sterilization at a ratio of 300 g of 35% metalaxyl per 100 kg of seeds; third, in the early stage of the disease, spray with 50% copper metalaxyl wettable powder at 6000 to 7000 times dilution, or with 72.2% propamocarb aqueous solution at 8000 times dilution, applying once every 7 to 10 days...
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What are the key points for pollution-free control of white rust in water spinach?
Symptoms: The lesions appear on the underside of the leaves. On the upper surface of the leaves, pale yellow to yellow spots first appear, then gradually turn brown. The lesions expand, and on the underside of the leaves white raised blister-like spots form, nearly round or oval to irregular in shape, sometimes merging into larger blisters. In the later stage, the blisters rupture and release white sporangia. When the leaves are severely affected, the lesions are dense and the diseased...
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What Does Wheat Rust Look Like? Symptoms and Identification Methods
What does wheat rust look like? Wheat rust is also called jaundice. It is divided into 3 types: stripe rust, leaf rust, and stem rust. It is the most widespread and most damaging class of disease on wheat. After wheat is infected with rust, chlorotic spots first appear on the surface of the wheat leaves or stems, and later yellow or reddish-brown powder pustules grow out, namely the pathogen's uredinia...
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Identification and Control Methods of Jujube Rust Disease Explained in Detail
(1) Symptoms: Jujube rust disease only damages the leaves. In the early stage, pale green small spots are scattered on the underside of the leaves, later gradually becoming raised and dark yellow, which are the uredinia of the pathogen. The uredinia are irregular in shape and mostly occur on both sides of the midrib, at the leaf tip and base. After the surface of the lesion ruptures, yellow urediniospores are scattered. On the upper side of the leaf, corresponding to the uredinia, green...
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What are the control measures for citrus rust mites?
Pay attention to inspecting citrus plants. When a rapidly spreading pale yellow powdery layer appears on the leaf and fruit surfaces, when individual black-skinned fruits appear on the citrus plants, or when examination with a 10x magnifying glass reveals 2~3 rust mites per field of view, timely control should be carried out. You can choose M-45 Daconil 600x solution, or 25% azocyclotin 1...
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