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Symptoms and control methods of downy mildew in codonopsis (Codonopsis pilosula)
Irregular brown lesions appear on the leaf surface, and a gray mold-like growth (conidiophores and conidia) appears on the underside of the leaves, which can cause the plant to die. Control method: remove diseased plants and fallen leaves and burn them in a centralized manner; during the disease period, spray 300-fold dilution of 40% Shuangyiling or 1000-fold dilution of 70% chlorothalonil, once every 7 to 10 days, for 2 to 3 consecutive times.
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Introduction to the Chuanmai 107 wheat variety, original code 89-107
Variety source: 246/80-28-7. Characteristics: spring habit, plant height about 90 cm, medium tillering ability. Long awn, white shell, white grain, large spike, about 40 grains per spike, 1000-grain weight about 40 g. Maturity period comparable to the control Mianyang 20. Immune to stem rust, moderately resistant to powdery mildew, susceptible to leaf rust, highly susceptible to stripe rust and Fusarium head blight. Test weight 750 g/L, protein content 12%, wet gluten content 16.3%, sedimentation value 17 ml, water absorption 55.6%, dough stability time
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What are the control methods for rodent damage to codonopsis (Codonopsis pilosula)?
They begin to damage the seedlings when the seedlings emerge 5 cm above ground. Control methods: (1) Mix 1 part of 3% zinc phosphide with 95 parts of green vegetables, beans, rice, etc.; after mixing well, scatter the bait in the evening in places where rats frequently appear or at their burrows. (2) Mix 1 part of 0.5% bromadiolone evenly with 3 parts of flour, then add cut apple pieces, vegetables, and fried dough sticks (cut into 1 cm pieces) and mix them evenly to coat; this can be placed in the evening in places where rats are frequently active. Alternatively, use 2.5% phorate granules at 1500 g per 667 sq m mixed with 10 kg of fine soil and scatter it along the edges of beds and ridges to drive rats away; be careful not to scatter it on the seedlings.
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What kind of environmental conditions does Codonopsis pilosula cultivation require?
Codonopsis pilosula is also known as three-leaf vegetable, single leaf, and stinking codonopsis. It is a perennial climbing herbaceous plant of the Campanulaceae family. Codonopsis pilosula is a commonly used traditional Chinese medicine, originally from Shangdang, Shanxi; its root resembles ginseng, hence the name codonopsis. The root is used medicinally and has the functions of tonifying qi and nourishing blood, harmonizing the spleen and stomach, promoting fluid production and clearing the lungs. There are many varieties of codonopsis medicinal material, such as Western codonopsis, mainly produced in Gansu, Shanxi, Sichuan and other provinces; Eastern codonopsis, mainly produced in the northeastern provinces; Lu codonopsis, mainly produced in Shanxi, Henan and other provinces. The Tai codonopsis among the Western codonopsis is especially the best in quality. Codonopsis is a deep-rooted plant that prefers a cool and moist climate.
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Symptom Identification and Control Methods of Root Rot in Codonopsis pilosula
The pathogen is a type of imperfect fungus among the fungi, and it is divided into two types: chronic onset and acute onset. In the chronic type, the disease begins in mid to late May. In the early stage of the disease, dark purple lesions appear on the lower fibrous roots or lateral roots, which then turn black and rot. After the disease spreads to the main root, it gradually rots from bottom to top. The remaining unrotted part is mostly a "half-section ginseng," and the area near the rotted part is dark brown. The stems and leaves above ground gradually turn yellow and eventually die. In the acute type, the disease mostly begins in mid to late June. Once the ginseng root is infected, almost the entire ginseng root becomes diseased at the same time
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Detailed Explanation of High-Yield Cultivation Techniques for Codonopsis pilosula
The Chinese medicinal herb Codonopsis pilosula (poor man's ginseng) uses its root as medicine, and it grows at forest edges or in thickets. It is distributed in western Sichuan, Gansu, Shanxi, Henan, Inner Mongolia, Hebei, Shaanxi, Northeast China and other places. It is cultivated in most provinces and cities across the country. Its taste is sweet, and its nature is neutral. I. Biological Characteristics: It has strong cold resistance and prefers cool mountainous areas. It can be planted in mountainous areas at an altitude of 800-2000 m. Deep soil layers, good drainage, and sandy loam soil rich in humus are best. Continuous cropping is avoided. II. Propagation Methods: Codonopsis pilosula adopts sexual reproduction, divided into direct sowing and seedling transplanting.
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Introduction to the Gansu Codonopsis variety 92-02
Gansu Codonopsis 92-02 is a new Codonopsis variety jointly bred by the Dingxi Dryland Agriculture Research and Extension Center of Gansu Province, the Weiyuan County Science and Technology Bureau, and the Agricultural Extension Center and other units, using the mass selection method over many years according to breeding procedures. The variety passed provincial appraisal and acceptance in 2004, with the achievement level reaching domestic advanced standards, and won the second prize of the Dingxi Municipal Science and Technology Progress Award in 2006. Its variety characteristics are as follows: 1. Characteristics and traits. The variety has a full growth period of 540 d, a plant height of about 150 cm, a green main stem, pale yellow
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How to grow Codonopsis pilosula? A detailed explanation of the key points of Codonopsis pilosula cultivation techniques
1. Site selection and land preparation For the seedling bed, it is best to choose a sandy loam or humus loam close to a water source, with loose, fertile soil and good drainage, and a shady slope facing away from the sun; for the planting site, a gently sloping field or terraced field with high, dry terrain and good drainage should be chosen, and virgin wasteland as well as flat land are both acceptable, but the soil layer must be deep, relatively fertile, well structured, and easy to cultivate. After the soil is selected, in the winter of the previous year clear the shrubs and weeds from the virgin wasteland, burn them to ash for fertilizer, then deep plow the soil 30 cm, level and harrow it fine, and make raised beds 1.3 m wide
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A Detailed Guide to the Planting Methods and Key Technical Points for Codonopsis pilosula
Codonopsis pilosula: mainly produced in Shanxi, Shaanxi, Gansu, Sichuan and the Northeast region. Codonopsis pilosula var. modesta: mainly produced in western Sichuan and parts of Gansu. Codonopsis tangshen: mainly in Sichuan, Chongqing, Hubei, Hunan, Guizhou and other provinces. [Medicinal material characteristics] Codonopsis pilosula: the root is long and cylindrical, slightly curved, 10-35 cm long, 0.4-2 cm in diameter. The surface is yellow-brown to grayish-brown; the root head has numerous warty, protruding stem scars and buds, with the tip of each stem scar appearing as a sunken round dot; below the root head there are dense ring-like
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Soil preparation methods and key technical points for Codonopsis pilosula cultivation
Both spring plowing and autumn plowing are acceptable, but autumn plowing is preferable. Before plowing, spread 30,000-50,000 kg of decomposed farmyard manure or compost per hectare, then plow to a depth of 25-30 cm, harrow fine and level. Codonopsis pilosula (poor man's ginseng) is suited to bed cultivation, with a bed width of 120 cm; on high, dry terrain flat beds can be made, while on lower terrain raised beds of 10-15 cm can be made. In some places ridge cultivation is practiced; to increase the number of plants per unit area, make small ridges of 50 cm, or make wide ridges of 60 cm with double-row planting.
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