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Occurrence Patterns and Control Methods of Lotus Root Brown Spot Disease
Brown spot disease is a major disease of lotus root, widely distributed, and can occur in spring, summer, and autumn. Generally, diseased plants account for 30%-50%, and in severe cases, the incidence rate can reach over 80%, significantly affecting lotus root yield and quality. 1. Symptoms This disease mainly affects the leaves and leaf stalks of lotus root. In the early stage of leaf infection, small brownish-green...
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Six Common Lotus Root Diseases and Their Control Methods
I. Main Disease Types June and July are the peak growing period for lotus roots and also the peak period for various diseases, so doing a good job of disease control is key. As an instructor in the agricultural science and technology system, I propose lotus root disease control techniques to guide demonstrators and lotus root farmers in production. 1. Lotus root rot, also known as black root disease, lotus root...
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How is integrated control of lotus root diseases carried out?
I. Lotus root brown spot disease A common disease of lotus leaves, producing light brown lesions on the leaves, causing localized drying of the affected leaves. Control: Reasonable close planting to ensure ventilation and light penetration in the lotus field; appropriately increase the application of phosphorus and potassium fertilizers to improve plant resistance, and promptly remove diseased plant residues. At the early stage of the disease, use 25% carbendazim 600x solution, or 75% chlorothalonil...
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What are the main pests and diseases of lychee in March?
1. Downy blight: also called downy mildew blight. It mainly damages the fruit, and also infects flower clusters and young leaves. When the fruit is affected, the disease usually starts at the fruit stem, with irregular lesions appearing on the fruit skin surface that gradually spread, eventually turning the entire fruit black, rotting the flesh, producing a sour, fermented, wine-like smell, and with a white frost-like substance on the outside of the diseased fruit, causing fruit drop....
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What are the key points of radish pest and disease control techniques
This disease mainly damages cruciferous vegetables such as Chinese cabbage, bok choy, cabbage, and radish. It occurs commonly across the country, and is severe in northern regions. (1) Symptoms: It mainly damages the leaves. At the early stage of the disease, small grayish-brown round spots are scattered on the leaf surface, which then gradually expand into irregular round lesions, with the center turning grayish-white, and 1 to...
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Early control methods for four onion diseases
The main onion diseases are downy mildew, gray mold, rust and soft rot, and they should be controlled early. Downy mildew and gray mold Downy mildew mainly damages the outer leaves and flower stalks of onions. The suitable temperature for the disease is 10-20°C, and it can occur from April to May or from November to December. At the beginning of the disease, affected plants show oblong or band-shaped sunken lesions on the outer leaves...
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What are the spring disease control measures for onions?
1. Fertilizing and making beds: Choose a plot that faces the sun and is warm, with loose and fertile soil that can be both irrigated and drained, to build the seedling bed. The bed surface should be 1.2-1.5 m wide, and the length varies by location. Apply 5-6 kg of decomposed farmyard manure per sq m in the bed, and at the same time add 60-80 g of compound fertilizer. Mix the soil and fertilizer in the bed evenly and break it up fine, take out the covering soil, rake it level and wait to sow. ...
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Winter Pest and Disease Control Methods for Kiwifruit Orchards
As the cultivated area and fruiting area of kiwifruit continue to expand, the occurrence and damage of pests and diseases are becoming increasingly serious. Winter pest and disease control in kiwifruit orchards can achieve twice the result with half the effort in promoting tree vigor transformation, pest and disease control in spring and summer, and the healthy growth of kiwifruit trees. According to surveys conducted by our station in recent years, the main diseases found so far...
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What are the control methods for zucchini brown spot disease?
There are mainly two diseases that can cause stalk rot in zucchini: the first is gummy stem blight. This disease mainly infects zucchini at the stem nodes; the infected area is initially dark brown, then gradually turns black, and the lesion tends to split open, exuding a white gelatinous substance; in the later stage the diseased stem shrivels and splits longitudinally, resembling tangled hemp. The second...
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What are the common methods for controlling pests and diseases in Hami melons?
Common pest and disease control methods for Hami melons
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