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Identification and control methods for the copper-green chafer
[Control methods] (1) Controlling adults The adults of the above several species of chafers all have the habit of supplementary feeding, mainly feeding on the leaves of trees, fruit trees, legumes and other crops. On young fruit trees, manual control can be used to capture adults to reduce damage. (2) Chemical control 2.5% trichlorfon powder can be used, broadcast at 30 kg per hectare on field crops. 40% dimethoate or omethoate emulsifiable concentrate at 1000 times dilution, or 20% fenvalerate 300
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How to prevent porcine epidemic diarrhea? A detailed guide to practical prevention and control methods
To prevent porcine epidemic diarrhea, vaccinate in advance with the attenuated porcine epidemic diarrhea vaccine or the inactivated vaccine; to prevent transmissible gastroenteritis, inject 1 ml of the attenuated transmissible gastroenteritis vaccine intramuscularly and intranasally in sows 45 days and 15 days before farrowing; there is no vaccine for rotavirus disease, so once sick pigs are found, isolate them early, inject 5%-10% glucose saline intravenously with 3%-5% sodium bicarbonate added, stop suckling the piglets, and prepare a glucose-glycine solution for the piglets to drink, with the formula: glucose 43.2
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Prevention and Control Methods and Technical Key Points for Porcine High Fever Syndrome
"Porcine unknown high fever," also known as porcine high fever syndrome, is a disease with high morbidity and mortality rates, occurring mainly in growing-finishing pigs and some sows. The main clinical manifestations in affected pigs are elevated body temperature, depression, loss of appetite or complete anorexia, difficulty breathing, panting, with some pigs showing symptoms such as reddened to purplish skin, and a few having hemorrhagic spots at the hair follicles. The pathogens are mainly mixed infections and secondary infections involving multiple viruses, bacteria, and parasites, including classical swine fever virus (HCV), porcine reproductive and respiratory syndrome virus (PRRSV)
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What to do when sawtooth mushrooms appear? Causes and control methods
The young mushroom fruiting bodies develop normally, but the edges of the caps look like sawteeth, uneven and jagged. The main cause of this disease is stimulation by strong wind. When the wind is strong, humidity drops, and the young tender oyster mushroom fruiting bodies are affected by these adverse environmental conditions, which disrupts their metabolism, damages the tissue cells at the edge of the caps, and produces sawtooth-shaped oyster mushrooms. Control methods: In windy weather, do not open ventilation openings or open fewer of them. If ventilation is urgently needed, when the wind is from the north open only the vents on the south side, and when the wind is from the south open only the vents on the north side. At the same time, increase the amount of water sprayed to raise the humidity in the mushroom shed.
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A Detailed Explanation of the Common Causes of Deformed Mushrooms and Their Prevention and Control Methods
The manifestations of deformed mushrooms are diverse, and the main ones commonly seen in production are: landmine mushrooms, hollow mushrooms, big-butt mushrooms, hard opening and early opening, red roots, and water rust spots. Landmine mushrooms. The main cause of their formation is that the casing soil material is too coarse, the soil texture is somewhat hard, the casing soil is relatively thick, the surface layer of the casing soil contains relatively little water, while the temperature and humidity conditions of its lower part and the substrate are suitable for the occurrence and growth of fruiting bodies, so fruiting bodies are easily differentiated and formed on the surface of the substrate or in the middle and lower layers of the casing soil, and then emerge through the soil surface. Solution: select high-quality humus soil, and according to a certain ratio
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Identification and Control Methods of Southern Blight in Japanese Euonymus
Southern blight in Japanese euonymus is caused by a fungus and is characterized by being highly destructive and spreading rapidly. If not controlled properly, it can cause the death of all seedlings. Based on past work, we have summarized the characteristics and control methods of southern blight in Japanese euonymus. Symptoms: In the early stage of the disease, the stem or leaf base near the soil turns brown and rots. After a few days of sun exposure, white silky mycelium appears on the diseased parts and soil surface, spreading radially through the rhizosphere soil. Later, brown, rapeseed-shaped small sclerotia grow on the stem near the soil surface, often causing the death of the entire plant.
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Identification and Control Methods of the Pryeria sinica Moth on Japanese Euonymus
Scientific name: Pryeria sinica Moore. Morphological characteristics: The adult moth has a body length of about 12 mm and a wingspan of about 30 mm. The head, thorax and antennae are dark brown. The male moth's antennae are feathery, while the female's are pectinate. There are long orange-yellow hairs on the thorax dorsum and both sides of the abdomen. The forewings are semi-transparent, but the basal 1/3 of the wing is yellow, the rest is dark gray, and the veins are dark brown. The hindwings are yellow at the base. The eggs are oval and flat, initially yellowish-white, gradually turning light brown. The larva is about 20 mm long, with a small dark brown head and a yellow-green body, with sparse white fine hairs on the sides and back.
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Occurrence Patterns and Control Methods of the Euonymus Leafroller Moth
The Euonymus leafroller moth belongs to the order Lepidoptera, family Zygaenidae. Its larvae damage the tender leaves and shoots of host plants, feeding on the foliage; in severe cases they strip the branches bare, or even cause entire stands to wither and die. In the Jining region, the Euonymus leafroller moth has one generation per year and overwinters as eggs on the host's branches and shoot tips. The overwintering eggs mostly hatch in mid-to-late March; in sheltered, sunny spots they can hatch 5-7 days earlier, and the hatching peak generally occurs around March 20. A single egg mass can finish hatching in 2-3 days, which coincides with the emergence of new leaves on the Euonymus. From late April to early May, the mature lar
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What are the control methods for the Euonymus looper (large-leaf Euonymus inchworm)?
Occurrence pattern: The large-leaf Euonymus looper damages plants by the larvae feeding on leaves. It has three generations in Hunan. The overwintering generation adults emerge and lay eggs in mid-April, damage begins in late April, they successively enter the soil to pupate in late May, emerge in mid-June, the second generation causes damage in late June, enters the soil to pupate in early August, emerges in mid-August, and the third generation causes damage in late August. The most severe damage is caused by the first and second generations. Damage is most severe in seasons with mild climate and abundant rainfall. During the peak damage period, 2 to 3 days can strip all the leaves from the whole plant, leaving the plant bare. In
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Symptoms and Control Methods of Brown Spot Disease in Japanese Euonymus (Euonymus japonicus)
Symptoms: Yellow or brown small spots appear on new leaves, gradually expanding into nearly circular irregular patches, with a diameter of up to 3-10 mm. Later the diseased spots turn grayish-brown or grayish-white, with a darker edge, and the spots bear concentric rings and many small black mold dots. Pathogen and disease pattern: Fungus. It is the imperfect fungus Cercospora destructiva Rav. The disease begins to occur in mid to late May, with the peak period in August, and basically stops after November. Cr
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