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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 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 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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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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Comprehensive Control Techniques for White Rust of Rapeseed
The pathogen of rapeseed white rust is Albugo candida, a disease commonly occurring on rapeseed and cruciferous vegetables in the Yangtze River basin, often occurring together with rapeseed downy mildew on the same flower stalk. I. Symptoms: All aboveground organs of rapeseed are susceptible throughout the entire growth period. Pale green small spots first appear on the leaf surface, later turning yellow...
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What are the control methods for white rust in water spinach?
How do you control white rust in water spinach? Please advise. First, carry out a 2- to 3-year crop rotation with other vegetable varieties. Second, before sowing, treat the seed at a ratio of 300 g of 35% metalaxyl per 100 kg of seed for sterilization; third, in the early stage of the disease, use 50% copper metalaxyl wettable powder at 6000 to 7000 times dilution, or 72.2% propamocarb aqueous solution...
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What are the control methods for white rust in water spinach?
How do you control white rust in water spinach? Please advise. 1. Implement a 2- to 3-year crop rotation with other vegetable varieties. 2. Before sowing, dress 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 8...
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What are the control methods for white rust in water spinach?
How should water spinach be cultivated? Please advise. 1. Variety selection. Suitable varieties for planting include Daji Huang, Dagu Qing, Jian Ye, Si Yong, Daji Qing, and others. 2. Cultivation season. Greenhouse cultivation can basically achieve year-round production and year-round supply. 3. Land preparation and fertilization. Water spinach grows quickly...
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How to prevent and control chrysanthemum white rust? A detailed guide to practical control techniques
Chrysanthemums are loved for their elegant, bright colors and rich fragrance. Growing flowers can cultivate people's character, enrich cultural life, and improve physical and mental health. At the same time, some varieties of chrysanthemums grown can also be eaten or used as medicine, achieving two benefits at once. However, in the process of cultivating and propagating chrysanthemums, they often suffer from a variety of diseases...
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What are the control methods for white rust in Achyranthes bidentata?
How do you control white rust in Achyranthes bidentata? Please explain the control methods. White rust in Achyranthes bidentata is mainly caused by a fungal infection of the plant. The symptoms are that all aboveground parts of the plant can be affected, and when leaves are damaged, pale yellow-green patches appear on the leaf surface, with blister-like raised spots developing on the corresponding underside, 1-2 mm in diameter. After the epidermis ruptures, a white, glossy, sticky, powdery substance is released...
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