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Control Methods and Technical Key Points for Physiological Diseases of Button Mushrooms
Button mushrooms are relatively sensitive to their environment. A poor cultivation environment will hinder their normal growth and development, produce various abnormal phenomena, and lead to reduced yield and lower quality. Common physiological diseases of button mushrooms include excessive mycelial growth, hard opening of the caps, thin-skinned early opening, and the appearance of soil-level mushrooms and hollow-stemmed white-core mushrooms. They are described below: Symptoms of excessive mycelial growth: after the mushroom bed is cased and watered, the fluffy mycelium of the button mushroom will continuously grow toward the surface of the fine soil. In severe cases, it will form a fine, water-impermeable mycelial mat, thereby delaying the time of fruiting and reducing the mushroom
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Detailed Explanation of Key Techniques for Preventing and Controlling Mushroom Dead Button Disease
Mushroom dead button refers to the phenomenon in which small mushrooms on the mushroom bed shrink, turn yellow, and die. The appearance of withered mushrooms in patches or batches can severely affect yield. 1. Causes of dead button: ① Temperatures too high in late autumn (exceeding 23°C), or during the spring fruiting period when temperatures rise too high and too quickly (several consecutive days at 21°C), causing small mushroom buttons to shrink and die from nutrient deficiency. ② Poor ventilation in the mushroom house, insufficient o2 and excessively high co2 concentration, and the heat generated by metabolism cannot be dissipated quickly, causing small mushroom buttons to die in batches from insufficient oxygen supply or high temperature. ③
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Mushrooms can achieve increased yield with traditional fertilization methods
To achieve high mushroom yields, appropriate supplementary fertilization is essential. Based on years of practical experience by mushroom growers in many places, the following nine traditional fertilization methods have proven to have excellent yield-increasing effects. Mushroom growers are encouraged to try them in practice. Applying mushroom soup. Collect mushroom stems and broken mushrooms left over from harvesting and processing, wash them clean, cut them into thin slices, add 1--1.5 kg of water per kg of material, boil for 15 minutes, take the filtrate and dilute with water to 10--15 kg, and spray on mushroom beds of 30--40 sq m. Use during the peak fruiting period,
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What is leaf curl disease in geranium viral diseases
There are many types of geranium viral diseases. The following common ones are mainly distributed in Europe and the Americas, with a few reports also in Asia. Geranium leaf curl disease is also known as geranium crinkle leaf disease. [Pathogen] Pelargonium leaf curl virus (Pelargoniumleafcurlvirus, PLCV), thermal death point 85-90°C. [Symptoms] Chlorotic spots appear on young leaves, then develop into yellow round or star-shaped spots with a dark yellow center and a pale halo around them, along with necrotic perforation
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Detailed Explanation of Flower Break Virus Disease in Pelargonium
[Pathogen] Pelargonium flower break virus (PFBV), thermal death point 85-90°C. [Symptoms] On the flowers of certain cultivars, stripes of varying shades appear, and the flowers become deformed and smaller; the leaves of seedlings show faded spots, and sometimes necrotic spots appear on the leaves.
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A Detailed Guide to Common Geranium Diseases and Their Control Methods
The main diseases of geraniums include: ① Leaf spot disease. In the early stage, needle-tip-sized, round or irregular small brown spots appear on the leaves, which gradually expand into dark brown or reddish-brown lesions. In severe cases, the entire leaf is covered with lesions until it dries up and falls off; the stems and branches also turn black, shrink and rot, and even the leaves on the stems wither and die, leaving only a few leaves at the top. Preventive measures: a. When cultivating in a greenhouse, do not plant too densely, and pay attention to frequent ventilation and light exposure; b. When watering, avoid pouring water onto the plants and avoid splashing water droplets
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Symptoms and Control Methods of Common Leaf Spot Diseases in Geraniums
Geranium leaf spot disease is a common disease in spring and summer. It is most likely to occur in hot and rainy seasons, often causing most of the infected leaves to die and drop off. When the stem is infected, it turns black, wilts and rots; cutting open the base reveals brown or black vascular bundles. Affected cuttings fail to root, with rot starting from the stem and developing upward, causing leaves to wilt and die. Symptoms: Geranium leaf spot disease includes two types: black spot disease and brown spot disease. Black spot disease: initial water-soaked spots appear on leaves, semicircular to irregular in shape, later becoming circular, 2 to 3 mm in diameter,
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How to prevent and treat Geranium blackleg disease? Introduction to practical methods
Symptoms This disease occurs on both cuttings and mature plants, with cuttings being more severely affected. Decay begins at the base of the stem and develops upward, causing death. After mature plants are affected, they turn black, and the blackening spreads upward, the leaves drop, and the entire plant withers and dies. Pathogen Pythium splendens Braun, belonging to the Mastigomycotina. The hyphae are well developed, branched, and non-septate, appearing as white cottony fluff when growing vigorously. Sporangia are filamentous, round, or nearly round, and produce zoospores that cause infection.
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Control Methods for Geranium Mosaic Disease (CMV)
Symptoms: Leaf symptoms appear as a mosaic pattern; the leaves are smaller than normal and show an uneven, bumpy surface. On some varieties, chlorotic spots develop and the flowers become color-broken. The pathogen is Cucumber mosaic virus (CMV). Transmission routes are sap transmission and aphid transmission. Control methods: 1. During management operations, frequently wash and disinfect with soapy water. 2. Control aphids promptly and eradicate surrounding weeds.
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Symptoms and Control Methods of Geranium Ringspot Disease
[Pathogen]Tobacco ringspot virus (Tobaccoringspotvirus, TomRSV), thermal inactivation point 58°C; Pelargonium ringspot virus (prlargoniumringspotvirus, PRSV), thermal inactivation point 85°C. [Symptoms]Chlorotic yellow spots, ringspots and line patterns appear on leaves, plants grow stunted, and flowers develop abnormally. [Disease pattern and epidemic characteristics]Propagating from cuttings taken from diseased plants is the main route of virus transmission. Sap
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