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Control Methods for Sweet Potato Scab, a Must-Read for Growers
Sweet potato scab, also known as sweet potato bud-shrinking disease, is commonly called leprosy disease, hard stem disease, etc. [Pathogen scientific name] Sphaceloma batatas Sawada. [Host crop] Sweet potato. [Disease diagnosis] It mainly damages young shoots, leaves and stems, and can also damage tubers. Leaves are mostly tender
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Occurrence Patterns and Control Methods of the Sweet Potato Hornworm
The sweet potato hornworm, Herse convolvuli (Linnaeus), belongs to the order Lepidoptera, family Sphingidae. It is distributed in Japan, and in China it is also found in Liaoning, Hebei, Henan, Shandong, Shanxi, Zhejiang, Taiwan, China, Guangdong and other provinces. It mainly damages plants of the Convolvulaceae, Solanaceae and Fabaceae. I. Morphology
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What are the control methods for sweet potato black star disease?
Sweet potato black star disease, also known as black spot disease. [Pathogen scientific name] Alternaria bataticola Ikata. [Host crop] Sweet potato. [Disease diagnosis] It damages leaves, petioles and stems. When leaves are affected, water-soaked brown spots first appear, and after expansion the lesions become round, ell
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Control Methods and Technical Key Points for Sweet Potato Brown Spot Disease
Sweet potato brown spot disease, also known as angular leaf spot. [Pathogen scientific name] Cercospora batatac Zimm [Host crops] Sweet potato, water spinach, morning glory, etc. [Disease diagnosis] It mainly damages leaves. When leaves are affected, water-soaked small spots first appear, then the lesions gradually expand
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How to Prevent and Control Sweet Potato Stem Nematode Disease? Detailed Technical Methods
Sweet potato stem nematode disease is a devastating disease in sweet potato production. It is highly destructive and spreads quickly. It can infect and cause damage during the seedbed stage, field stage, and storage stage, but it mainly infects the tubers. Affected sweet potatoes have brown, bluish skin with cracked patterns, and the tubers are light. Some tubers show no external abnormalities, but are hollow and pithy inside. This disease not only affects the quality of sweet potatoes, but also severely affects sweet potato yield.
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How to control weeds in pollution-free sweet potato cultivation?
Commonly used herbicides for sweet potato are as follows: (1) Caochangmie (Leikela) 70% wettable powder, 3000-3750 grams per hectare mixed with 450-600 liters of water, applied before planting sweet potato or immediately after planting. Mainly controls Alopecurus aequalis, crabgrass, barnyardgrass, foxtail, ryegrass, goosefoot, smartweed,
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Integrated Control of Diseases, Pests and Weeds in Pollution-Free Sweet Potato Cultivation
(1) Carefully select seed tubers. Choose tuber pieces free of disease, insects and injuries as seed tubers. (2) Chemical treatment of seed tubers (omitted). (3) Storage cellar management. Store the seed tubers in a sterile cellar; preferably use a new cellar. If an old cellar is used, first scrape off the cellar walls, then fumigate with 15 g of sulfur per sq m. After the tubers
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How to prevent and control rice bakanae disease? Treating seeds with chemicals is effective
Last year, rice bakanae disease occurred in quite a few places in Tongzhou District, Nantong City. The occurrence characteristics, infection pathways and control techniques of this disease are introduced below. Bakanae disease can occur from the rice seedling stage to the heading stage, with the highest occurrence at the tillering stage. Seed-borne bacteria are the main source of infection
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Rice planting requires good soil preparation and pre-transplanting weed control.
In order to better carry out agricultural technology extension work, in addition to conscientiously summarizing last year's work and arranging this year's tasks, to ensure increased crop grain production and income, on April 6, at the critical season, 3 scientific and technical personnel from the Kaiyuan City Seed Management Station went to Longtan Village and Renshou in Dazhuang Township to visit science and technology demonstration households.
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Control Methods for the Small Brown Planthopper at the Rice Heading Stage
The small brown planthopper (Laodelphax striatellus) not only transmits viruses that cause rice viral diseases such as rice stripe virus disease, but also congregates on the panicles to cause damage during the heading stage of late rice. To clarify the control efficacy of pymetrozine and other pesticides against the small brown planthopper at the heading stage of late rice and the application techniques, Cheng Qinhai and others from the Plant Protection Station of Haining City, Zhejiang Province, conducted field
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