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Control Methods for Red Spider Mite Infestation in Perilla
Perilla, alternate names: Guiren, white perilla, red perilla, etc.; it is an annual herbaceous plant of the Lamiaceae family. It has a distinctive aroma. The leaves are mostly wrinkled and curled; when flattened, complete leaves are ovate, 4 to 11 cm long and 2.5 to 9 cm wide, with a long-tapered or acute apex, a rounded or broadly cuneate base, and serrate margins. Both surfaces are purple, or the upper surface is green, and the lower surface has numerous sunken glandular scales. The petiole is 2 to 5 cm long, purple or purple-green, and brittle. The young branches are purple-green, with pith in the center of the cross-section, a fresh fragrance, and a slightly pungent taste. Perilla leaf can disperse exterior cold and has a relatively strong diaphoretic effect. It is used for wind-cold exterior patterns with symptoms such as aversion to cold, fever, and absence of sweating, and is often used together with ginger; if the exterior pattern is accompanied by qi stagnation, it can also be used together with Cyperus rotundus and dried tangerine peel. In moving qi and relieving middle fullness, perilla leaf is used for spleen-stomach qi stagnation, chest oppression, and nausea. It is native to China and is mainly distributed in countries such as India, Myanmar, Japan, Korea, South Korea, Indonesia, and Russia. In China, wild and cultivated varieties are found in North China, Central China, South China, Southwest China, and Taiwan, China.</p><p></p><p>Perilla is highly adaptable and not strict about soil requirements. It grows well in well-drained sandy loam, loam, and clay loam, and when cultivated in fertile soil in front of and behind houses and along ditches and field edges. The previous crop is best as vegetables. It can also be planted under young fruit tree groves. Perilla is commonly used as a traditional Chinese medicine in China, while Japanese people mostly use it in cooking, especially as an indispensable accompaniment when eating sashimi. In a few areas of China, it is also used as a vegetable or made into tea. Perilla leaf is also called Su Ye, and has the functions of releasing the exterior and dispersing cold, moving qi, and harmonizing the stomach. It mainly treats wind-cold common cold, cough, chest and abdominal distention and fullness, nausea and vomiting, and other conditions. The seed is also called Su Zi, and has the functions of relieving cough, calming wheezing, and eliminating phlegm. The whole perilla plant can be distilled into perilla oil, and the oil obtained from the seeds is also called perilla seed oil. Long-term consumption of perilla seed oil has a clear therapeutic effect on coronary heart disease and high blood lipids.</p><p>Control of the pest red spider mite in perilla</p><p>Symptoms of red spider mite damage in perilla: red spider mites harm perilla leaves. It occurs most severely from June to August when the weather is dry, with high temperature and low humidity. Adult red spider mites are tiny, generally red, and sometimes yellow. Red spider mites gather on the back of leaves and pierce and suck the sap. At first, yellow-white small spots appear at the damaged areas, and later larger yellow-brown scorched spots can be seen on the leaf surface. After expansion, the entire leaf turns yellow and loses greenness, and leaf drop is commonly seen.</p><p>Control methods for red spider mite in perilla:</p><p>1. At harvest time, collect fallen leaves in the field and burn them in a concentrated manner; in early spring, clear weeds on field ridges, along ditches, and beside roads.</p><p>2. During the occurrence period, spray early with 40% dimethoate emulsion at 2000 times dilution. However, spraying must be stopped half a month before harvest to ensure that no residual toxin remains on the medicinal material.</p><p>(3) Silver-striped noctuid: from July to September, the larvae harm perilla, and the leaves are bitten into holes or notches. The mature larvae make thin silk cocoons on the plant and pupate. Control method: spray with 90% crystalline trichlorfon at 1000 times dilution.</p>
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Control Methods for Red Spider Mites in Cotton Cultivation
Cotton leaf mite, also known as cotton red spider, fire dragon, fire spider. It belongs to the class Arachnida, order Acariformes, family Tetranychidae. The main species causing serious damage are the red leaf mite, Jiang leaf mite, and two-spotted spider mite. The individuals are small and highly reproductive, breeding more than 10 generations per year, and harm plants by piercing and sucking with adult mites and nymphs.
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How to control Kanzawa spider mite infestation in zinnia cultivation
Kanzawa spider mite (Tetranychus kanzawai) belongs to the class Arachnida, order Acariformes (Trombidiformes), family Tetranychidae, genus Tetranychus. It is mainly distributed in the eastern and central regions. [Host plants] Zinnia, chrysanthemum, iris, snapdragon, rose, sweet pea, morning glory, cherry and other ornamental flowers and trees. [Damage characteristics] It usually
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Occurrence Patterns and Control Methods of Peanut Spider Mites
Peanut spider mites occur commonly in Zhaoyuan City, mainly the carmine spider mite (Tetranychus cinnabarinus) and the two-spotted spider mite (Tetranychus urticae), among which the carmine spider mite has the highest occurrence density and causes the most severe damage, while the two-spotted spider mite affects a smaller area, but in recent years the two-spotted spider mite has shown an upward trend in Zhaoyuan City. In recent years, peanut spider mites
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What are the symptoms of red spider mite damage? A quick identification guide
Red spider mite is a pest that threatens many plants, mainly damaging vegetable crops in the Solanaceae, Cucurbitaceae, Fabaceae and Liliaceae families, so what exactly are the symptoms of red spider mite damage? 1. Basic introduction to red spider mite. Red spider mite is an animal of the Tetranychidae family; adult mites are red, with a length of
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What specific pesticides are effective for controlling red spider mites on eggplant?
Eggplant is one of the main summer vegetables and is cultivated throughout China. During cultivation, it is prone to common pests such as red spider mites, aphids and whiteflies. So, what specific pesticides are there for treating red spider mites on eggplant? 1. Specific pesticides for red spider mites on eggplant Eggplant red
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The Most Effective Methods for Controlling Red Spider Mites on Vegetables Include Pesticides and Natural Predators
Red spider mite, also known as cotton red spider mite, commonly called big spider, big dragon, sand dragon, etc., with the scientific name spider mite, is one of the pests in crop production, and its damage is very serious. So what are the most effective methods to kill red spider mites? What pesticide is most effective? Damage characteristics: Red spider mites mainly
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What are the natural enemies of red spider mites and the most effective methods to eliminate them?
Red spider mite, also known as cotton red spider mite, commonly called big spider, big dragon, sand dragon, etc., scientific name spider mite, widely distributed, omnivorous, mainly damaging various vegetable crops, garden flowers and trees, citrus fruit trees, etc. So what are the natural enemies of red spider mites? The most effective ways to eliminate them
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Corn Red Spider Mite Control Methods and Effective Pesticide Recommendations
The corn red spider mite is one of the important outbreak pests in corn production. In different corn production areas, it occurs to varying degrees every year, especially after July in the north, when continuous high temperatures and drought will provide extremely favorable conditions for the occurrence of red spider mites.
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Control Techniques for Aphids, Red Spider Mites, Scale Insects, Damping-Off, Rust, and Powdery Mildew on Flowers
In spring the temperature turns warm then cold again, and the air humidity is high. At present the occurrence of crop pests and diseases is at a moderate to severe level, and flowers also suffer from many pests and diseases. The following are generally the more serious ones from April to May: 1. Damping-off When the temperature reaches 20°C, newly sown
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