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Detailed Guide to Identifying and Controlling Peach Aphids on Peach Trees
The peach aphid, also known as the peach red aphid, cabbage aphid, or greasy bug, among other names. Its main hosts include broccoli, purple cabbage, cauliflower, Chinese cabbage, radish and other cruciferous vegetables as well as other vegetables. Adults and nymphs pierce and suck sap on the leaves, causing the leaves to curl and deform, affecting head formation. They damage the tender stems, tender leaves, flower stalks and tender pods of seed-producing plants, causing the flower stalks to twist and become deformed, so they cannot bolt, flower and set seed normally. In addition, aphids also transmit a variety of viral diseases. Occurrence characteristics: generation overlap is extremely severe. In heated greenhouses, they reproduce parthenogenetically on vegetables throughout the year. In the open field: in late April of the following spring
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Ten observation points for sick pigs, so pig farmers can quickly identify swine diseases
At present, for rural farmers raising pigs, in terms of feeding and management, some people pour feed into the pig trough and turn around and leave, rarely paying attention to observing the pigs' growth and development or whether they show signs of illness. As a result, they do not know when a pig gets sick, and by the time the pig is down in the pen, it is too late and difficult to treat. To prevent disease before it occurs and treat it early when it does, symptoms must be discovered in time. Observation can be made from the following ten aspects. 1. Look at demeanor. Healthy pigs are spirited, with tails raised and swinging freely, while sick pigs are listless, slow to move, prefer lying still, and have drooping tails.
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A Detailed Guide to Identifying and Controlling the 28-Spotted Ladybird Beetle on Eggplant
The 28-spotted ladybird beetle on eggplant belongs to the order Coleoptera, family Coccinellidae, also known as the groundcherry ladybird beetle, commonly called "flowered big sister." Its host crops include solanaceous vegetables such as eggplant, tomato, green pepper and potato, as well as cucurbitaceous vegetables such as cucumber. In addition, it can also damage crops such as beans, groundcherry and Chinese cabbage, among which eggplant suffers the most serious damage. It is distributed throughout the country, but occurs in larger numbers and causes serious damage in areas south of the Yangtze River basin. 1 Field identification 1.1 Damage characteristics It damages crops as adults and larvae. Newly hatched larvae
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How to detect illness in dogs? Practical methods for identifying when a dog is sick
When dogs suffer from different diseases, they will show corresponding abnormal manifestations (symptoms) in one or certain aspects. Using the following methods of examination, sick dogs can be detected. It is necessary for dog owners to master some of the most commonly used basic knowledge in this regard, so that sick dogs can be discovered in time and some simple treatment can be carried out. Never think that the diagnosis and treatment of dog diseases is only a matter for veterinarians and that "it is none of your business and you stay aloof." (1) Look. The content of looking has two major aspects: first, under quiet conditions, look at the dog's mental state, behavioral manifestations, and reactions to external stimuli; second, look at the dog's body surface condition (coat, skin, natural orifices, etc.) and the characteristics of its excrement, etc. (2) Listen. Directly listen to whether the dog's barking and breathing sounds are normal, and whether there is panting, coughing, or sneezing, etc. A stethoscope or short tube can also be used to listen to the heartbeat, breathing, and gastrointestinal peristaltic sounds. (3) Measure. Commonly use a veterinary thermometer to measure the temperature in the rectum (37.5-38.5°C for adult dogs, 38.2-39.3°C for puppies). A dog's body temperature changes regularly within a day, lowest in the early morning and slightly higher in the afternoon, and the difference between day and night generally does not exceed 1°C; if the temperature difference is too large or there is reversed fever (high in the morning, low in the evening), then it is abnormal. You can also hold the dog's ear with your hand to sense its body temperature. (4) Touch. Use the palm or back of the hand to touch a certain part of the body surface to determine the temperature and sensitivity of the skin there, muscle tension, and whether the adjacent internal organs are normal (position, size, texture, and whether there is pain). The heartbeat or pulse condition is also very easy to feel clearly with the hand. (5) Percuss. Tap the corresponding areas on the body surface (projection areas) of organs such as the dog's stomach or intestines with the fingers to judge whether they are normal.
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How to Identify Poisonous Edible Mushrooms and Prevent Poisoning
In summer, wild edible mushrooms appear in large numbers, and many poisonous mushrooms have morphological features similar to many edible mushrooms, causing people to eat them by mistake and be poisoned. At present, there are 40 known poisonous edible mushrooms in China, 30 of which can be fatal, and fewer than 20 are common. Every year, accidents of death caused by mistakenly eating poisonous edible mushrooms occur. Methods for identifying wild edible mushrooms: First, wild edible mushrooms with strange shapes, bright colors, and spines or warts growing on the cap; those with both an annulus and a volva on the stipe are mostly poisonous; second, wild edible mushrooms with a foul odor, an extremely spicy or extremely
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What are the simple methods for identifying sick pigs?
1. Look at the movements. A healthy pig keeps its tail swinging constantly and reacts quickly and nimbly to outside stimuli. A healthy adult pig is greedy for food and fond of sleep. If food is given, it will come at the call, lie down and doze after eating its fill, and when a stranger approaches, it will stand up, raise its eyes and keep wagging its tail. If a pig is found to be listless, sluggish in movement, often lying down and unable to get up, refusing to eat or drink, with a stiff back, unsteady walking, and drooping head and tail, then it is a sick pig. 2. Look at the skin. A healthy pig has smooth, rounded skin and full muscles; if the pig
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What are the methods for identifying edible mushrooms? A detailed explanation
Methods for identifying edible mushrooms. For oyster mushrooms (Pleurotus ostreatus), white, dense, thick mycelium with a cottony appearance and wall-climbing behavior indicates superior spawn. If wood-chip spawn is used, decomposed wood chips that turn pale yellow with a small number of primordia appearing indicate superior spawn. If the mycelium is sparse or forms strands, the cottonseed-hull substrate turns dark red, the wood-chip substrate turns white, the mycelium pulls away from the bottle wall and shrivels, yellow exudate accumulates at the base of the spawn bottle, or mold spots appear on the surface of the substrate, it is inferior spawn. For wood ear (Auricularia auricula), white, uniform mycelium indicates superior spawn. If
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How to identify edible mushroom mother cultures by appearance?
Excellent purified mushroom cultures are the fundamental guarantee for successful edible mushroom cultivation. The appearance identification methods for several edible mushroom mother cultures are introduced as follows: Shiitake mushroom mycelium on potato dextrose agar (PDA) medium is pure white, thick and robust, appearing floccose or velvety; after filling the test tube it has a certain ability to climb the wall, with edges showing irregular wavy curves. At around 24°C, the mycelium generally fills the test tube slant in 12-15 days. It has a distinctive shiitake aroma. Oyster mushroom mycelium on PDA medium is snowy white, dense and thick
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What are the simple methods for identifying sick pigs?
1. Look at the eyes. A healthy pig has bright, spirited eyes; if a pig's eyes are dim, red, or have excessive eye discharge, it is a sign of illness. 2. Look at the skin. A healthy pig has smooth, rounded skin and full muscles; if the pig's skin is rough and hard, lacks elasticity, or has swelling, ulcers, red spots, or festering patches, it is a sign of illness. 3. Look at the coat color. A healthy pig has a glossy, lustrous coat; if the pig's hair is rough, hard, lacks elasticity, and is messy, it is a sign of illness. 4. Look at the snout disc. A healthy pig has a moist snout disc with beads of sweat; if the pig's snout disc
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How to Identify Mother Cultures and Spawn of Edible Fungi? A Detailed Guide to the Methods
Shiitake (Lentinula edodes) spawn: the mycelium is snow-white, thick and strong, spread out, and uniform, with even margins and a fast growth rate; on the bottle wall it develops in a fan-shaped, feather-like pattern, growing vigorously, and secretes soy-sauce-colored droplets. After the mycelium has fully covered the bottle, within 10 to 15 days an amber-colored transparent liquid is commonly seen, along with the distinctive fragrant aroma of shiitake, with no foul or musty odor. If the mycelial column inside the bottle pulls away from the bottle wall, this indicates that the substrate moisture is too high; if it has pulled away and the mycelial column also begins to shrink, with the surface mycelial skin thickening and turning dark brown, this indicates that the spawn has begun to age and cannot
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