-
What are the common pests and diseases of licorice (Glycyrrhiza) and their control methods?
(1) Rust: in the early stage of the disease, spray with 25% triadimefon wettable powder at 1000 times dilution or 97% dinocap at 300 times dilution for control, once every 7-10 days, for a total of 2-3 sprays. (2) Brown spot: spray once with 1:1 Bordeaux mixture before the disease occurs; in the early stage of the disease, choose 70% thiophanate-methyl wettable powder at 2000 times dilution or 75% chlorothalonil at 500 times dilution for spray control, once every 7-10 days, for a total of 2 sprays. (3) Aphids: during the occurrence period, spray-kill with 40% dimethoate emulsifiable concentrate at 1500 times dilution.
-
Licorice Pest and Disease Control Methods and Key Technical Points
(1) Rust: occurs from May to June, damaging leaves. Control methods: ① Gather and burn diseased branches; ② Spray 90% nabam at 400 times dilution in the early stage of the disease. (2) Brown spot: occurs from May to June, damaging leaves. Control methods: ① Gather and burn diseased branches; ② Spray 1:1:100-160 Bordeaux mixture or 70% thiophanate-methyl wettable powder at 1500-2000 times dilution in the early stage of the disease. (3) Powdery mildew: occurs from May to June, damaging leaves. Control method: Spray 0.2-0.3 degrees Baume lime sulfur
-
Methods and Technical Key Points for the Prevention and Control of Licorice Pests and Diseases
The main diseases of licorice are rust, powdery mildew and brown spot. Licorice rust mainly damages the leaves and tender stems of the plant; the back of infected leaves produces yellow-brown blister-like lesions on one side, and after the epidermis ruptures, brown powder is released. Prevention and control method: burn the leaves of diseased plants. In the early stage of the disease, treat with a 1000-fold dilution of Fenxiuning; you can also use 0.3 degrees Baume lime sulfur mixture, or a 500-fold dilution of 65% wettable zineb, or a 200-fold dilution of dithianon sodium for spray control, spraying once every 7 to 10 days, and 2 to 3 consecutive sprays are sufficient. Licorice brown spot is also called
-
Licorice Disease Prevention and Control Methods and Key Technical Points
(1) Rust disease: When infected, yellowish-brown scar-like lesions appear on the underside of the leaves. After the epidermis ruptures, brown powder is released; this is the uredinium of the pathogen. From August to September, dark brown telia form, causing the leaves to turn yellow and wither, and in severe cases to fall off. Control methods: Apply more phosphorus and potassium fertilizer to improve the plant's disease resistance. Remove diseased plant debris and burn it in a centralized manner. At the early stage of the disease, spray with 15% triadimefon at 1000 times dilution, or 97% diniconazole at 400 times dilution. (2) Brown spot disease: It damages the leaves, and affected leaves develop round or irregular lesions. The
-
Key Technical Points for Large-Scale Cultivation of Licorice with High Quality and High Yield
Field Management 1. Intertillage and weeding: After the seedlings emerge completely, intertillage and weeding should be carried out promptly so that there are no weeds in the field. For ridge planting, three hoeings and three ridgings can be done; for bed planting, weeds on the bed surface should be pulled out. This is the key to high quality and high yield. Where conditions permit, closed weeding can be carried out after sowing and before seedling emergence, using Douhuanglong (20% chlorimuron-ethyl) wettable powder 2 bags/mu mixed with acetochlor 2-4 bottles/mu and sprayed over the field. After seedling emergence, herbicides killing monocotyledonous plants can be sprayed to eliminate weeds.
-
Detailed Explanation of Licorice Trench-Sowing Direct-Seeding Cultivation Technology
Licorice is a deep-rooted plant. Adopting trench-sowing direct-seeding cultivation technology can solve unfavorable factors such as licorice seedling raising, transplanting, low yield, and long growth cycle, greatly improving its economic benefits. **Tekes County in Ili belongs to the northern temperate continental climate type, and its natural geographical environment is very suitable for licorice growth. In 2005, we used the deep-rooted plant trench-planting machine for licorice cultivation for the first time in the whole of Xinjiang, changing the conventional licorice planting model. The trench-sowing direct-seeding cultivation technology is now introduced as follows. 1 Site selection, base fertilizer application, land preparation Select fertile
-
Detailed Guide to Herbicide Application Techniques in Licorice Fields (Part Two)
Weeds can severely affect the yield and quality of licorice, competing with licorice for sunlight, water and nutrients. Some weeds are also intermediate hosts for licorice crop pests and diseases, helping pests and diseases spread and transmit. Especially for artificially cultivated licorice at the seedling stage, if weeds are not removed in time, a large number of seedlings will die, or even the entire crop will be destroyed. Now, in addition to manual weeding, chemical herbicides are often used for weed control. In our county, the following 3 chemical herbicides are currently promoted for artificially cultivated licorice: acetochlor, pendimethalin, and doucaote. Practice has proved that using chemical herbicides for weed control is the guarantee
-
Detailed Explanation of Licorice Cultivation Techniques and Methods
Licorice is a perennial herbaceous plant of the Fabaceae family, and the medicinal parts are the root and rhizome. It contains 5-11% triterpenoid compounds, glycyrrhizin, followed by flavonoid compounds such as liquiritin, liquiritigenin, isoliquiritin, isoliquiritigenin, etc. It is neutral in nature and sweet in taste, harmonizes the middle and relieves acute conditions, moistens the lungs, removes toxins, and harmonizes all medicines, making it an indispensable herb in many traditional Chinese medicine prescriptions. (1) Site selection and land preparation. Licorice prefers arid climates and is suited to sandy loam with deep soil layers and a low groundwater table, which can achieve high starch content, less fiber, strong sweetness, and good quality.
-
What are the key technical points for licorice seedling raising and transplanting?
(1) Site selection and land preparation: Licorice has strong adaptability and can be grown in general soils, but sandy loam with deep, loose, well-drained soil is best. Combined with autumn deep plowing, apply 2000 kg of decomposed farmyard manure per mu, and 20 kg of diammonium phosphate or superphosphate, then rake level, harrow fine, and make beds. (2) Seedling raising and stand maintenance: Seedlings can be sown in early May. Before sowing, water the seedling plot thoroughly; when the soil surface is slightly dry, drill sow with a narrow-row seeder, using 8-10 kg of seed per mu, maintaining 100,000-120,000 plants. After the seedlings emerge evenly, water to preserve soil moisture, and keep the field free of weeds during the growing period. When the seedlings grow to 10-15 cm, apply 1 topdressing of urea with irrigation, at 10 kg per mu. In the later growth stage, water as appropriate depending on the weather.
-
Detailed Explanation of Key Techniques for Licorice Seedling Raising and Transplanting
Licorice is an important medicinal herb. With the strengthening of national ecological and environmental protection, the use of wild resources has become very limited, and licorice seedling raising and transplanting techniques have become very important. Licorice is a perennial herbaceous plant of the Fabaceae family and is listed by the state as a key specially controlled medicinal herb. As a sweetener, glycyrrhizic acid is 200-300 times sweeter than sucrose and is the best natural sweetener discovered to date. The state has explicitly designated licorice as a national Class II protected plant, and random digging is not permitted, which has intensified the contradiction between supply and demand of licorice. Therefore, research on artificial cultivation and high-yield, high-quality cultivation techniques is of great significance.
条件筛选