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Identification and control methods of the licorice seed weevil
Morphological characteristics: The adult is oval, brown or dark brown, with a body length of 2.5-3mm and a width of 1.5-1.8mm; the antennae are broad and short, serrate, and do not reach the base of the elytra. The pronotum is covered with punctures and dense light brown hairs, and its posterior margin is as wide as the elytra. The elytra are covered with punctures and dense light brown hairs. The pygidium is long, slightly pointed at the tip, and the ventral surface is covered with dense light brown hairs. The inner margin of the hind femur has 1 small, indistinct tubercle near the tip; the inner margin of the hind tibia has 1 long tooth at the tip; the first segment of the hind tarsus is the longest. Damaged crop: licorice. Damage symptoms: main
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How to treat licorice seeds? A detailed guide to the warm water soaking method
Soak the seeds in warm water at 60°C, stirring constantly. Once the water temperature drops, remove the seeds and soak them in clean water until they swell, then remove and drain them before sowing. Warm water soaking can increase the germination rate of the seeds by 15%-20%. Alternatively, soak the seeds in warm water at 60°C for 4-6 hours, remove them and place them in a warm spot, cover with a damp cloth, and rinse with clean water twice a day, then sow once the seeds crack open.
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Detailed Explanation of Sand Storage Treatment for Licorice Seeds
If a large quantity of seeds is used, sand storage treatment is mostly adopted. The method is: carry out the treatment about 2 months before sowing. First, soak the licorice seeds in 60°C warm water for 4~6 hours, stirring several times during soaking. After removing them, drain them, and mix them evenly with clean fine river sand at 5 times the volume of the seeds. The humidity of the river sand should be such that when squeezed in the hand, water appears but does not drip. Then put the evenly mixed seeds into a wooden box, pack the surrounding area tightly with wet sand that has not been mixed with seeds, and cover the top with a 3~5 cm thick layer of moist fine river sand. Finally, place the seed box into a prepared pit,
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Detailed Explanation of the Botanical Morphological Characteristics of Licorice
The licorice plant is 50-150 cm tall, with a thick, cylindrical root that often grows horizontally and tastes sweet. The outer bark is reddish-brown or dark brown. The stem is upright, mostly woody in the lower part, and the whole plant is covered with short white soft hairs. The odd-pinnate compound leaves are alternate, with 7-17 pairs of leaflets that are ovate-elliptic, entire, and covered on both sides with glandular scales and white hairs. The raceme is axillary, the calyx is bell-shaped, and the corolla is papilionaceous, purplish-red or blue-purple. The pods are mostly densely clustered in a spherical arrangement; a single pod is sometimes curved into a sickle shape, brown, densely covered with prickly glandular hairs, and contains 6-8 seeds, sometimes 2,
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Detailed Guide to Licorice Cultivation: Planting Methods and Management Essentials
Licorice, also known as sweet grass or sweet root, has the effects of harmonizing medicinal properties, reducing or alleviating drug toxicity, and moistening the lungs. It also has the characteristics of cold resistance, heat tolerance, drought tolerance, sensitivity to waterlogging, and light preference, making it an excellent plant for windbreaks and sand fixation. Its cultivation techniques are as follows: For site selection and land preparation, sandy soil with deep soil layers, a deep groundwater table, and good drainage should be chosen. The soil salt content should preferably not exceed 0.2%. Areas with excessive rain or where the soil is relatively clayey and drainage is poor are not suitable for planting, because the roots tend to rot or the main root is short, with many lateral and fibrous roots, resulting in low economic value. The seedling nursery should preferably be chosen on relatively flat
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Cultivation Timing and Management Key Points for Licorice
I. Seed Germination Habits (I) Water Absorption and Germination of Licorice Seeds Licorice seeds have a low emergence rate, generally around 10%, so they must be treated before sowing. Untreated seeds absorb water very slowly, and most seeds do not imbibe; seeds treated with concentrated sulfuric acid absorb water very rapidly, reaching over 100% within 4 hours. Generally, once water absorption exceeds 100%, the seeds have a very uniform germination capacity. If water absorption differs, the germination rate differs accordingly. At 20°C, after absorbing water for more than 1.5 hours, the germination rate reaches over 80%, at which point the moisture content is about 95
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Cultivation Techniques and Field Management Methods for Licorice
Licorice is a perennial herbaceous plant of the Fabaceae family, and the medicinal parts are the roots and rhizomes. 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 urgency, moistens the lungs, detoxifies, and harmonizes various medicines, making it an indispensable herb in many traditional Chinese medicine prescriptions. (1) Site selection and land preparation. Licorice prefers arid climates and is suitable for sandy loam soil with deep soil layers and a low groundwater table, which can achieve high starch content, low fiber, strong sweetness,
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Detailed Explanation of Key Techniques for Licorice Seedling Cultivation and Transplanting
The licorice seedling cultivation base requires good irrigation conditions, level plots, and fertile soil. There is no limit on plot size; seedlings can be grown in open fields or developed in courtyards. Sowing can be done anytime from April to August each year, with 10 kg of treated seeds sown per mu. Drill sowing is used, with a row spacing of 15 cm, and 120,000 to 150,000 seedlings are maintained per mu. Licorice sown in spring is transplanted in the spring of the following year, while licorice sown in summer and autumn is transplanted in the spring of the third year. The transplanting row spacing is 35 cm, the trench depth is 8 to 10 cm, and the plant spacing is 8 to 10 cm. The flat planting method is used, with
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Detailed Explanation of Key Techniques for Licorice Seedling Raising and Transplanting
Licorice is a perennial herbaceous plant of the Fabaceae family, also known as sweet herb, and is widely used medicinally. I. Morphological Characteristics: Plant height 50-120 cm. The root is thick and large, cylindrical, reddish-brown, with horizontal rhizomes. The stem is upright, with pinnate compound leaves, alternate, 5-17 leaflets, ovate or elliptical; flowers are papilionaceous, light purplish-red. The pod is curved, sickle-shaped, with external bristles. Seeds are round, brownish-green, with a 1000-seed weight of 11.93 grams. Flowering period is July-August, and fruiting period is August-October. II. Growth Characteristics: Licorice is mainly distributed in the "Three North" regions of China, and has
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How to grow licorice seedlings? Master these key seedling cultivation techniques
Choose sandy soil and loam with a low groundwater table and deep soil layer, but it must be irrigated land. When the ground surface temperature reaches 15°C, apply 3000 kg of farmyard manure per mu, plus 40 kg of American diammonium or nitrophosphate, then deep plow 40-50 cm. Deep plowing is essential (otherwise the seedlings grown will have short roots and many branches, mostly failing to meet the specified quality standards). Make a flat seedbed and water once, with the amount of water bringing the soil to the black moisture state (that is, when you grab a handful and throw it down, it does not crumble but holds together like a cake). After three to five days, shallow plow once more, then you can open furrows and sow. Follow the drilling method for seedling cultivation, with a row spacing of 2
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