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Identification and Control Methods for Common Diseases of Edible Fungi
Brown rot, also known as white rot, wet bubble disease, etc. When diseased mushrooms are infected at a young stage, they cannot further differentiate and develop, and later form deformed mushrooms, often with a layer of "white fuzz" growing on the surface, which is the mycelium of the pathogen. When the temperature is above 20°C, over 4 to 5 days, the diseased mushrooms darken in color, then rot, exuding a brown (soy-sauce-like) liquid and becoming decayed and foul-smelling; below 20°C, this process takes longer. When the fruiting body is infected at the mid stage, brown lesions appear on the cap, the stipe becomes swollen and thick, and then the mushroom body softens. Cutting open the diseased mushroom reveals that its interior changes from white to grayish-white
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Identification and control methods for several common diseases of edible fungi
I. Causes of deformed mushrooms and measures to avoid them. Deformed mushrooms lower product grade and may even lose their commercial value, affecting the economic benefits of cultivation; this problem is widespread. Common deformed mushrooms include: caps tightly clasped and not opening, appearing "fist-shaped"; stipes long, thick and fleshy with small caps, appearing "vase-shaped"; caps sunken with cracked, outward-curling edges, appearing "broken-bowl-shaped"; caps narrow and long, appearing "ox-tongue-shaped"; caps with spots on the surface, appearing "pockmarked"; caps with swollen tumor-like protrusions in the center, appearing "belly-swollen"; two caps spreading side by side with stipes tightly joined, appearing "butterfly-shaped"; caps curved and uneven, appearing "wavy-edged"
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How to prevent and treat leaf spot disease in golden privet
Diseased leaves develop nearly circular brown spots, often with concentric rings, and the outer edge is usually yellow. In the early stage the spots are relatively small; after expanding, the spots reach more than 1 cm in diameter, and sometimes the spots merge into irregular shapes. Diseased leaves drop from the branches very easily, thereby causing the phenomenon of bare branches and stems on golden privet in severely affected areas. The first occurrence period is early April, and the peak periods are July to August and October; from mid-May to mid-August and from mid-September to early November, use 47% Meike at 3000-4000 times dilution, 1% Junliting at 2
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Common Pests and Diseases of Golden Privet and Their Control Methods
Content: We have a large area of golden privet (Ligustrum vicaryi). Every year in the hot, humid season, the leaves drop in patches until the plants turn yellow and wither. What is the cause, and how can it be controlled? Reply: It may be "golden privet leaf spot" caused by a fungus. Once the plum rain season ends, it spreads everywhere, and affected golden privet quickly loses all its leaves. It is generally caused by planting density being too high, and in recent years it has appeared in large numbers in Shanghai. Control: spray with a fungicidal pesticide.
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Control Methods for Common Diseases and Pests of Golden Privet
The diseases commonly affecting golden privet (Ligustrum vicaryi) mainly include: leaf spot, ring rot, and sooty mold. The main pests include: scale insects and white grubs. Brown spot disease Brown spot disease is the most serious leaf spot disease of privet and is caused by pathogenic fungi. In the early stage of the disease, small brown spots appear on the leaves, surrounded by purplish-red halos, and black mold-like substances are visible on the spots. As the temperature rises, several spots sometimes merge together, and eventually the leaves wither and fall off. The optimum temperature range for the growth of this pathogen is 25°C to 30°C, and the optimum temperature for spore germination is 1
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How to prevent and control brown spot and defoliation disease in golden privet (Ligustrum × vicaryi)
Some years ago, because golden privet (Ligustrum × vicaryi) has advantages such as easy propagation, drought resistance, few pests and diseases, tolerance to pruning, a long golden-leaf period, and good effects in large color-block landscape grouping, it was widely planted, especially for patterned flower-bed shapes and large color blocks, where the landscape effect was particularly good. However, due to excessively high planting density and inadequate maintenance and management, brown spot and defoliation disease occurred every year during the rainy season (August to September in the Luoyang area), causing leaves to fall one after another, new leaves and tender buds to fail to emerge in time, and even entire plants to die in patches, severely damaging the landscape effect. In response to this situation, in 2003 we studied golden
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Identification and Control Methods of Common Fungal Diseases of Azaleas
Among the common azalea diseases, the main fungal diseases include azalea powdery mildew, rust, gray leaf spot, blight, and leaf gall, among others. These diseases mainly affect the leaves, young branches, buds and floral organs of azaleas, and when not controlled in time they often cause great losses. (1) The main differences among the following diseases are: 1. Azalea powdery mildew: generally occurs in the middle and late stages of growth, initially appearing as chlorotic spots, then growing a white mycelial layer and producing large amounts of powdery conidial layers, turning grayish brown in the later stage 2. Azalea rust: in the early stage, transparent golden or
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Detailed Explanation of Silkworm Disease Prevention and Control Methods and Technical Points
Silkworm diseases originally occurred mainly as midgut-type nuclear polyhedrosis and empty-headed flacherie, but at present, due to differences in rearing time and climatic conditions, silkworm diseases such as blood-type nuclear polyhedrosis and muscardine are predominant. 1. Blood-type nuclear polyhedrosis (commonly known as climbing silkworm, granny silkworm). The virus of blood-type nuclear polyhedrosis parasitizes in the blood of diseased silkworms. The blood of healthy silkworms is colorless and transparent, while the blood of diseased silkworms is milky white, so diseased silkworms are also called granny silkworms. Once a silkworm develops the disease, as the condition worsens, the diseased silkworm drags milky white purulent fluid and crawls frantically, so
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How to control the occurrence of silkworm diseases in silkworm rearing
Through practical investigation, we found that in the process of rearing silkworms, the insufficient awareness of silkworm farmers about the harm of silkworm diseases often leads to the occurrence of silkworm diseases, causing serious losses to production. Therefore, how to control the occurrence of silkworm diseases has always been the primary task in sericulture production. 1. Causes of silkworm diseases. Silkworm rearing is a high-density group rearing method, with a large number of individuals reared in a certain area. The silkworms' mulberry eating and excrement are also in the same area. Once disinfection work is neglected, or rearing management is improper, infectious silkworm diseases are prone to occur, causing spread and
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How to prevent and control bee diseases in spring? A detailed explanation of integrated control measures
The occurrence of bee diseases is directly related to beekeeping and management techniques. Once a disease breaks out, it will inevitably affect colony growth and economic returns. Especially in northern China, where the temperature difference between early and late spring is large and nectar and pollen sources are scarce, bee colonies are most prone to bee diseases. Therefore, in spring, the measure of "prevention first, treatment as a supplement" should be used to control the occurrence of bee diseases. Selection and treatment of apiary sites The basic conditions for beekeepers when choosing a site should be shelter from the wind, facing the sun, and dry terrain. In spring, choose low mountain areas or cutover land with many willow species and mainly Aceraceae plants. Only
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