-
Control Methods and Technical Key Points for Angelica Root Rot
Angelica root rot, also known as root decay disease, is one of the main diseases during the growth and development period of angelica (Angelica sinensis), greatly affecting its yield and quality. 1. Damage symptoms: It harms roots and stems. The root tissue of affected plants initially turns brown, then rots into a water-soaked state, leaving only a fibrous hollow shell. The stem becomes brown and water-soaked, aboveground growth stops, and the plant becomes stunted. Elliptical brown patches appear on the leaves; in severe cases, the leaves wither, turn yellow, droop, and even the entire plant dies. 2. Pathogen: (Fusarium avenaceum (
-
Detailed Explanation of Key Points for Standardized Cultivation Techniques of Angelica sinensis
1 Site Selection and Land Preparation 1.1 Site selection. Choose sandy loam soil that is deep, loose, well-drained, fertile, and rich in organic matter. For seedling raising, it is best to choose a north-facing gentle slope with half shade and half sun; for transplanting, a wind-sheltered, sunny location is suitable, and continuous cropping should be avoided. 1.2 Land preparation. For the cultivation site, choose a field with deep soil. Before sowing, plow deeply 2~3 times, with a deep plowing depth of more than 25 cm, and accelerate soil maturation through sun exposure. Then, before planting, apply 2~3 tons/mu of decomposed farmyard manure and 30~50 kg/mu of compound fertilizer during land preparation, plow them into the soil as base fertilizer, and then shallow plow once more before sowing, make high beds 1~1.3 m wide, and open drainage ditches around them.
-
The Harm and Control Methods of Angelica Leaf Spot Disease
The pathogen of Angelica leaf spot disease (Septoria SP.) is a fungus of the genus Septoria in the subphylum Deuteromycotina. The pycnidia are round, and the conidia are filiform to needle-shaped, colorless and transparent, straight or slightly curved, mostly with slightly pointed tips, with 1-3 septa. 1. Harmful symptoms: it damages the leaves. In the early stage of the disease, brown spots appear on the leaf surface, and the lesions gradually expand, with a chlorotic halo appearing around them, the edges appearing reddish-brown, and the center grayish-white. In the later stage, small black particles appear within the lesions. When the disease is severe, most of the leaf becomes reddish-brown, and finally gradually withers
-
Identification and Control of the Angelica Swallowtail Caterpillar Pest
The angelica swallowtail, also known as the fennel swallowtail, belongs to the order Lepidoptera, family Papilionidae. 1. Damage situation: The larvae cause damage, feeding on leaves at night, creating notches, and in severe cases eating all the leaves so that only the petioles and veins remain; they also feed on flowers and fruits. This insect has a large appetite, seriously affecting the growth of angelica and reducing yield. 2. Morphological characteristics. Adult: A large butterfly, with spring and summer forms. The summer form has a body length of about 25 mm and a wingspan of 90 mm; the spring form is slightly smaller. The body is yellow, with black stripes running longitudinally along the back. Both forewings and hindwings are yellow,
-
A Detailed Explanation of the Harm and Control Methods of Angelica Sclerotinia Rot
The pathogen of Angelica sclerotinia rot (Sclerotinia SP) is a fungus of the genus Sclerotinia in the subphylum Ascomycotina. The sclerotia are borne on the plant surface or on aerial hyphae in the internal cavities of plant organs, resembling mouse droppings, irregular in shape, and composed of hyphae. 1. Harmful symptoms: It mainly harms roots and leaves. In the early stage of the disease, the leaves turn yellow; in the later stage, the plant wilts, and the root tissue rots to form cavities containing multiple black, mouse-dropping-shaped sclerotia. 2. Disease occurrence pattern: The pathogen overwinters as sclerotia in seeds, diseased seedlings, diseased residues, or soil, and in 1
-
What varieties and types of Angelica sinensis are there? This article explains in detail
The whole Angelica sinensis root is roughly cylindrical. The upper end of the root is called the "gui tou" (head), the main root is called the "gui shen" (body) or "cun shen," the branch roots are called the "gui wei" (tail) or "gui tui" (leg), and the whole is called "quan gui" (whole root). The whole root is 15-25 cm long, with a fine, dense outer skin, yellow-brown to dark brown, with longitudinal wrinkles and transversely elongated lenticels; the upper end of the root is swollen, 1.5-4 cm in diameter, bluntly rounded, with residual leaf sheaths and stem bases; the main root is thick and short, l-3 cm long, l.5-3 cm in diameter, with 3-5 or more branch roots below, thick at the top and thin at the bottom, mostly twisted, with a few fibrous root scars. The texture is flexible and tough, and the cut surface is yellow-white
-
What kind of growing environment suits Angelica sinensis? Detailed planting conditions
Angelica sinensis is an alpine plant that requires cool, humid climate conditions. It is fond of fertilizer and afraid of waterlogging and high temperatures. When cultivated in low-altitude areas, it struggles to survive the summer, and dies easily when temperatures are too high. Seeds germinate well within the range of 10-25°C, with seedlings emerging in 10-15 days. Angelica sinensis exhibits early bolting, which should be prevented in production; generally, seedlings are raised and then transplanted, and the roots can be harvested in the third year.
-
How to cultivate green-haired turtles? Cultivation method with Angelica and Pine Needle Solution
When using the yellow-margined box turtle (Mauremys mutica) or other aquatic turtles to cultivate green-haired turtles, whether using the green water method, direct method, grafting method, or spore water method, it takes at least 40-50 days before the sprouting tips of Basicladia chelonum (turtle-shell basicladia algae) can be seen emerging on the turtle shell. Only the Angelica and Pine Needle Solution method achieves the fastest sprouting of Basicladia chelonum and the best results. The formula for Angelica and Pine Needle Solution (calculated for cultivating 100 green-haired turtles): Angelica 200 g, fresh pine needles 200 g, brown sugar 100 g, calcium tablets 40 tablets, vitamin B12 20 vials. First
-
What are the control methods for premature bolting in Angelica sinensis?
Based on the causes of premature bolting in Angelica sinensis, targeted measures can be taken to control it. The main measures are: starting from phase development, which is the primary condition for controlling qualitative phase changes. Starting from phase development, as long as the normal progress of qualitative change at either the vernalization stage or the photoperiod stage is controlled, premature bolting can be prevented. In production, controlling the vernalization stage is far easier than controlling the photoperiod stage. Since the vernalization stage can be controlled during winter seedling storage, when seedlings are relatively concentrated, it is convenient to carry out. That is, during seedling storage, first sterilize, control storage humidity at 6
-
How should cutworms be controlled in Angelica sinensis
Cutworms, also known as "ground silkworms" and "black ground silkworms." They belong to the order Lepidoptera, family Noctuidae. The cutworms affecting Angelica sinensis are mainly the black cutworm and the yellow cutworm, and their damage and control measures are the same. 1. Damage: The larvae damage Angelica sinensis seedlings, hiding by day and emerging at night; at the young instar stage they mostly damage tender leaves and tender growing tips, biting through the root crown and causing missing plants and broken rows. 2. Morphological characteristics: The adult black cutworm has a body length of 16-23 mm and a wingspan of 42-54 mm. The female moth's antennae are filiform, and the male moth's are bipectinate. The forewing is dark brown between the costal margin and the outer transverse line. Between the inner transverse line and the outer transverse line there are distinct kidney-shaped markings, ring-shaped markings and rod-shaped markings. The hindwing is grayish white, with the veins and margins dark brown. The abdomen is gray. The egg is hemispherical, initially milky white, later turning yellow, and grayish purple just before hatching. Mature larva: body length 37-47 mm. The head is yellowish brown, the body is yellowish brown to dark brown, with pale longitudinal bands on the back. The body surface is rough, covered with small round black granules. The anal plate is yellowish brown, with two dark brown longitudinal bands. Pupa: body length 18-24 mm. Reddish brown and glossy.
条件筛选