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What are the pest and disease control methods for the Chinese medicinal herb Panax notoginseng?
1. Diseases 1.1 Black spot disease occurs mostly in the high-temperature, high-humidity season from June to July, causing plants to twist and break and die. The control method is to adjust the shade shed's light transmittance to below 20%, and spray with 1.5% polyoxin 150-fold solution or 70% chlorothalonil wettable powder 600-800-fold solution. 1.2 Phytophthora blight is a devastating disease of Panax notoginseng at the seedling stage. It occurs mostly from June to July, damaging leaves and petioles. The control method is to strengthen field management, reduce temperature and humidity; promptly remove residues and burn them in a centralized manner, and spray with 65% zineb wettable powder 500-fold solution for treatment.
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What to do when the medicinal plant Panax notoginseng gets root-knot nematode disease
Symptoms After the roots of Panax notoginseng are invaded by nematodes, the root cells are stimulated by the nematodes and produce tumor-like galls of varying sizes. Both the main root and lateral roots can become deformed and form galls. The small ones are 1-2 mm, and the large ones can turn the entire root system into a single tumor-like mass. After being infected for a longer time, the plant's branches and leaves turn yellow or fall off. Pathogen Meloidogyne incognita (Kofoid et White) Chitwood, called the southern root-knot nematode. The pathogenic nematode is sexually dimorphic, and the larvae
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Symptoms and Control Methods of Brown Spot Disease in the Medicinal Plant Licorice
Licorice, scientific name Glycyrrhiza uralensis Fisch., also known as meicao and micao, is a perennial herbaceous plant in the Fabaceae family. Its roots and rhizomes are used as medicine. It has the effects of harmonizing the middle and relieving urgency, moistening the lungs and detoxifying, and harmonizing various medicines. It is produced in Inner Mongolia, Gansu, Shanxi, Shaanxi, Liaoning, Jilin, Heilongjiang, Hebei and other provinces. The symptoms mainly damage the leaves. The lesions on the leaves are round or irregular, 1-3 mm in size, with a grayish-brown center and brown edges, and grayish-black mold-like substances, namely the pathogen's conidia, grow on both sides.
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It is the right time for honeysuckle pest and disease control, and Xiushan County, Chongqing Municipality is strictly implementing it
Honeysuckle, formerly known as Japanese honeysuckle, also called silver flower, honeysuckle flower, or double flower, is a twining vine of the Caprifoliaceae family. The county has developed a honeysuckle base of 60,000 mu. Because the base farmers manage extensively and supporting technologies have not kept up, especially pest and disease control management, the yield of honeysuckle is low and the quality is poor. According to a survey by the county plant protection station, honeysuckle pests and diseases occur relatively commonly in our county, among which honeysuckle powdery mildew, brown spot disease, aphids and red spiders are relatively serious in occurrence and damage. At present, it is the best period for controlling honeysuckle powdery mildew, brown spot disease, aphids and red spiders and other pests and diseases
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Identification and Control Methods for Goji Berry Pests and Diseases
(1) Black fruit disease. The pathogen is a species of ascomycete fungus (scientific name Glomerella cingulata (Stonem) Sch. et Spauld). It is mainly prevalent in Hebei, Shandong, Shaanxi and other places, and mostly occurs during the rainy season. Affected fruits, flowers and buds turn black, and under humid conditions the diseased parts produce orange-red slime, which is the conidial mass of the pathogen. Control methods: ① Strengthen water and fertilizer management in winter and spring, prune lightly in autumn and winter to promote early ripening and higher yield of spring fruits; control
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Cultivation Techniques and Pest and Disease Control Methods for Leafy Goji (Vegetable Goji)
When people think of goji, they picture the bright red goji berries, and few know there is also a leafy goji whose tender leaves can be eaten. Leafy goji is a deciduous shrub in the Solanaceae family, with a plant height of 1 m. The branches are slender, long, curved or drooping; young branches are angular, gray on the outside, hairless, usually with short thorns borne in the leaf axils. Leaves are alternate or clustered on short shoots, with leaf blades ovate, ovate-rhombic or ovate-lanceolate, and entire. Flowers are usually 1-4 clustered in the leaf axils; the calyx is bell-shaped; the corolla is funnel-shaped, pale purple, with ciliate margins, and deeply 5-cleft
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What are the control methods for round spot disease of Panax notoginseng?
It can damage all parts of the plant. In the early stage of leaf disease, yellow spots appear on the underside of the leaves. In humid weather or during continuous rainy days, they rapidly expand into transparent round spots. When the weather is dry after the disease occurs, the lesions are relatively large, round and brown, with obvious concentric rings. When the stems are affected, the damaged parts are chestnut-colored, and the diseased area has a grayish-white mold layer, which can cause bud rot and stem base rot. Control methods: First, during the epidemic season of round spot disease, open the ventilation doors of the Panax notoginseng garden to increase air flow and reduce humidity inside the garden. Second, adjust the light intensity for Panax notoginseng to avoid excessively strong light, which is conducive to the spread of the disease.
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Control Methods for Green Mold Disease in Lingzhi (Reishi Mushroom)
Green mold (Trichoderma viride Pers. ex Fr.) belongs to the class Hyphomycetes, order Moniliales, family Moniliaceae, genus Trichoderma, under the subdivision Deuteromycotina. 1. Morphological characteristics: The hyphae are slender, colorless, septate, and much branched. Conidiophores arise from lateral branches of the hyphae, opposite or alternate, generally with 2-3 branchings; the sterigmata bearing conidia are flask-shaped or cone-shaped. Conidia are mostly spherical, with the spore wall bearing small warty protuberances, green or blue-green. On PDA medium, the colony is initially white and cottony, later becoming dark
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Key Technical Points for Pest and Disease Control During the Cultivation Period of Gastrodia elata
Gastrodia elata is a commonly used traditional Chinese medicinal herb. It is a special seed plant with no roots and no green leaves; it cannot nourish itself and must rely on symbiosis with Armillaria mellea to obtain nutrients for reproduction and growth. Therefore, cultivating Gastrodia elata differs from growing green plants, and three key steps must be managed according to its growth patterns. First, the cultivation of Armillaria mellea-infected wood; second, the selection and cultivation of Gastrodia elata seed tubers; third, the symbiotic cultivation of Gastrodia elata with Armillaria mellea. In all three production steps there is a chance of contamination by miscellaneous fungi, and if any step is done poorly, especially under unfavorable conditions, it will lead to failure in Gastrodia elata cultivation.
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What are the methods for controlling diseases and pests of Gastrodia elata?
I. Diseases and their control 1. Causes of the disease. The primary pathogens of Gastrodia elata diseases are mainly other basidiomycetes among the fungi besides Armillaria mellea, which infect the fresh wood and fungal wood symbiotic with Gastrodia elata's Armillaria mellea, competing with Armillaria mellea for nutrients. In severe cases, they not only inhibit the growth of Armillaria mellea and reduce the yield of Gastrodia elata, but also directly infect the tubers of Gastrodia elata, causing soft rot of Gastrodia elata (called tuber soft rot) or rotting death (called tuber rot). This disease mostly attacks and causes damage when the environment is poor, such as high temperature and high humidity, poor aeration and other conditions unfavorable to the growth of Gastrodia elata, causing the skin of the Gastrodia elata tuber to turn yellow and wither,
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