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Differences Between the Brown Marmorated Stink Bug and the Yellow-Spotted Stink Bug and Their Identification
The brown marmorated stink bug and the yellow-spotted stink bug both belong to the order Hemiptera, superfamily Pentatomoidea, family Pentatomidae, and both are pests that cause relatively serious damage to ornamental garden plants. The brown marmorated stink bug, scientific name Halyomorpha picus, is also known as the stinkwood stink bug, the stink bug, and the tea-colored stink bug. Host: this species has a wide diet and harms many garden plants such as black locust, elm, fig, lilac, pomegranate, paulownia, peach, and crabapple. Damage symptoms: adults and nymphs suck the sap of tender leaves, tender stems, and fruits, and in severe cases cause leaves to turn yellow and dry, and to fall
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Identification and Control Methods for the Wolfberry Psyllid
Also known as jaundice, it belongs to the order Homoptera, family Psyllidae. The pest's scientific name is PoratriozasinicaYangetLi. It damages crops such as wolfberry (goji) and black nightshade. Pest identification: adults and nymphs pierce and suck sap on the undersides of leaves, tender shoots and buds, causing the plant to decline in vigor and the leaves to turn yellow. The secreted honeydew causes sooty mold on the leaf surfaces below. The adult is about 3.8 mm long, yellow-brown to dark brown in body color, with orange-yellow markings. There is one pair of milky protrusions on the front of the frons; the basal segment and terminal segment of the antennae are black, while the rest are yellow. The femora of the front and middle legs are the same color as the body, while the hind femora are slightly black.
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Symptom Identification and Control Methods of Rust Disease in Codonopsis pilosula
It damages the leaves. The diseased area on the underside of the leaf is slightly raised, forming the uredinium, which later ruptures and releases orange-yellow urediniospores. The disease is most severe from June to July. Control methods: (1) Clear away withered branches and fallen leaves in winter. (2) During the disease period, spray with a 200-fold dilution of 50% dinitro compound or a 400-fold dilution of 97% sodium dithiocarbamate, once every 7 days, for 2 to 3 consecutive applications.
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Symptom Identification and Control Methods for Peach Fungal Shot Hole Disease
[Symptoms] When leaves are infected, circular or nearly circular lesions initially appear, with purple edges and slight concentric rings, measuring 1-4 mm in size; later, grayish-brown mold-like growth develops on the lesions, the center dries up and falls out, forming shot holes with neat edges, and when there are many holes, the leaves drop off. When new shoots and fruit are infected, the symptoms are similar to those on leaves. [Disease Development Pattern] [Regional Damage Severity] [Integrated Control] (1) Eliminate the source of inoculum. Promptly prune diseased branches, thoroughly remove diseased leaves, and burn or bury them deeply. Before peach trees bud, spray
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Identification and Control Measures of the Calospilos suspecta on Euonymus bungeanus
The Calospilos suspecta, commonly known as the "hanging ghost," belongs to the family Geometridae of the order Lepidoptera. The larva has only one pair of legs on the 6th abdominal segment and one pair on the terminal segment; when moving, its head and tail come together and it arches its back as it walks. Just like measuring objects with the fingers, it is also called a looper. It mainly damages boxwood, euonymus, elm, poplar, willow, and so on, and is a polyphagous pest. I. Morphological characteristics and habits Adult: a medium-sized moth. Wingspan 33 to 52 mm, body yellow. The mesothoracic scutum has two black spots. The abdominal pleura and terga are both yellow. The wing ground is white, with
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How do you identify poisonous wild mushrooms? Master these identification methods
So far, more than 10,000 species of wild mushrooms (fungi) have been discovered and recorded nationwide, among which there are as many as 192 species of poisonous mushrooms (fungi), and in the Jiangsu-Zhejiang area there are more than 30 species of poisonous mushrooms. Wild mushrooms (fungi) generally grow during the plum rain season and under high-temperature, high-humidity conditions in summer and autumn, so incidents of poisoning from eating them also mostly occur during this period. Poisonous wild mushrooms (fungi) often have the following characteristics: (1) High brightness of color. (2) The surface of umbrella-shaped and other mushrooms (fungi) is fish-scale-like. (3) There are ring-shaped protrusions on the mushroom stem. (4) The mushroom
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Symptom Identification and Control Methods of Black Locust Mosaic Virus Disease
[Distribution and Damage] Quite common in Beijing and Shandong. It affects the growth of young trees, causing dwarfism. [Symptoms] Irregular line patterns appear on the leaf surface, distributed without fixed positions, with beautiful patterns. Some leaves become smaller and lighter in color. If not carefully observed, it is easily overlooked. When adventitious buds in the leaf axils sprout, weak branches and small clustered branches and leaves are produced. In Eastern Europe, Central Europe or the United States, leaves become smaller, veins become transparent, petioles are short, plants are prone to cold damage, and there are often multiple branches and yellowing. The mosaic occurring in the United Kingdom appears mottled, with twisted leaves and curved wood.
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Identification and Control Methods for the Onion Fly
The onion fly Delia antigua (Meigen) belongs to the order Diptera, family Anthomyiidae. Commonly known as the onion fly, onion maggot, or garlic maggot. It is a worldwide pest, distributed throughout China. It is an omnivorous pest, capable of damaging almost all crops. In vegetable-growing areas, besides damaging spinach, onions, garlic, and cruciferous vegetables, it can also damage cucurbits, legumes, corn, tuber crops, cotton, and hemp crops. The larvae bore into the bulbs of onions, garlic, and similar plants, causing rot, yellowing and wilting of leaves, and even death of entire patches. After Chinese chives are damaged, it often causes missing plants and broken rows, and can even destroy an entire field.
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Several Key Control Points for Large-Specification Hairy Crab Culture in the Yellow River Estuary
In order to build up the "Yellow River Estuary" aquatic product brand and enhance the market competitiveness of "Yellow River Estuary" hairy crab, in 2005 Kenli County, Shandong Province, carried out a large-specification "Yellow River Estuary" hairy crab culture trial in a ten-thousand-mu river crab demonstration park, achieving good economic and social benefits. We now discuss several key technical issues in the culture process with fellow practitioners. 1. Pond ecology. Influenced by traditional concepts, many units follow fish-culture methods when building ponds and rearing crabs, with poor results, low survival rates of "Yellow River Estuary" hairy crab,
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Fish species quality identification methods, teaching you to accurately select high-quality fish species
1. Check whether the size is uniform. For the same species of fish, those with uniform size when harvested from the pond generally have a relatively robust constitution. 2. Check whether the fish body is glossy. Robust fish species have a layer of mucus on the body surface to protect the scales and skin from pathogen invasion, so the body surface shows a certain gloss. However, diseased, weak, or injured fish species lack mucus on the body surface and have no gloss, or some diseased fish have excessive mucus on the body surface and also lose their gloss. 3. Check the body color of the fish species. The body color of the fish species reflects their quality. The body surfaces of high-quality fish species are respectively:
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