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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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What kind of fruit is guava? The latest introduction to guava
Guava, also known as bajia, jishiguo, bazi and other names, is a tree plant of the genus Psidium in the myrtle family, native to South America, cultivated throughout South China, commonly found as an escaped wild species, the fruit is edible, the leaves contain volatile oil and tannins used medicinally, and have astringent, hemostatic and stomachic effects
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What Is the Latest Hickory Nut? A Detailed Guide
The hickory nut, also known as Manchurian walnut, walnut catalpa, and small walnut, among other names, is a deciduous tree of the genus Carya in the family Juglandaceae. Because its fruit has extremely high nutritional value and a unique taste and flavor, it has gained consumer recognition and gradually become a widely popular premium nut. China
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What plant is wild oats? Get to know this common farmland weed
Wild oats, also known as black oat, bell oat, oat grass, etc., is an annual plant of the genus Avena in the grass family. It is usually a weed harmful to wheat and other crops, mostly growing in waste fields or farmland, widely distributed across the provinces of northern and southern China, and also found in the temperate and cold zones of Europe, Asia and Africa
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When Do Orchids Bloom? Latest Blooming Season Guide
Orchids are also known as Cymbidium goeringii, orchid grass, orchid flower, and so on. They are epiphytic or terrestrial herbaceous plants of the genus Cymbidium in the family Orchidaceae. Chinese people have always regarded them as a symbol of nobility and elegance, and they are collectively called the "Four Gentlemen" together with plum, bamboo, and chrysanthemum. Orchids are usually used to describe the beauty of poetry and prose as "orchid writing," and true friendship as "orchid friendship." They
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What to Do When Gardenia Leaves Turn Black? Causes and Solutions
Gardenia is also known as Huang Zhizi, Shan Zhi, etc. Its leaves are bright green and evergreen all year round, its flowers are large and pure white with a rich fragrance, and it also has a certain tolerance for shade and resistance to toxic gases, so it is a good material for greening, beautification and fragrance, suitable for balcony greening, potted flowers, cut flowers or bonsai, etc.
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How to grow Madeira vine in pots? The latest care methods are here
Madeira vine, also known as basella, Madeira vine potato, and doubtful luokui, is a perennial herbaceous, slightly woody twining vine of the genus Anredera in the family Basellaceae. It has now been introduced and cultivated artificially, and is grown in many regions of China, especially in the south, where it is planted more widely. It has a
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How to Grow Nymphaea 'Firecrest'? A Detailed Guide to the Latest Cultivation Methods
Nymphaea 'Firecrest' is also known as Ziwulian, watercress flower, purple water lily, etc. It is an aquatic perennial herbaceous flower of the genus Nymphaea in the family Nymphaeaceae. This flower blooms for only seven days each year. On the outside are purple petals, in the middle are some golden tendrils, and inside is a flower bud ready to burst open, which only opens at
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How to Grow Potted Cosmos? A Detailed Guide to the Latest Care Methods
Cosmos is also known as autumn english, large cosmos, etc. It is an annual or perennial herbaceous plant of the genus Cosmos in the Asteraceae family. The plant is tall, the leaf shape is elegant, and the flower colors are rich. It is suitable for arranging flower borders, and for mass planting on grassland edges, around tree clumps, and along roadsides for beautification and greening. Double-flowered varieties can
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A Complete Guide to the Latest Methods for Growing Cineraria
Cineraria is also known as wealth chrysanthemum, cucumber flower and so on. It is a perennial herbaceous plant of the genus Pericallis in the Asteraceae family, usually grown as a 1- to 2-year-old plant, and is divided into tall varieties and dwarf varieties. Its flower language is joy, delight, happiness, family joy and prosperity, making it suitable as a gift for relatives and friends during the Spring Festival
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