Manchurian Walnut Tree
Why in news?
Researchers at Kyushu University in Japan identified a compound called 2Z-decaprenol in Manchurian walnut tree leaves that naturally suppresses weed growth without harming crops. This breakthrough, offers an eco-friendly alternative to chemical herbicides by inhibiting weed germination and improving soil conditions.​
Key facts and characteristics
- Large tree with round crown, 20-30 m tall with edible nuts with thick shells, difficult to crack
- Imparipinnate leaves 45-90 cm long with 11-19 segments
- Tolerant to cold (down to -45°C)
- Durable and aesthetically prized wood
- Contains allelopathic compounds with herbicidal properties
- Used in traditional medicine for various health benefits
- Lifespan up to 200-300 years
- Fruiting starts at 7-10 years of age​
- Medicinal applications: Used in pharmaceuticals and folk medicine for analgesic, antifungal, and antiparasitic effects; treats cancer, gastric ulcers, diarrhea, dysentery, dermatosis, uterine prolapse, leukopenia, urinary stones, chronic bronchitis, and skin conditions.​
- Timber and woodworking: Hard, durable wood used for furniture, flooring, carving, indoor decoration, vehicles, sports equipment, and military applications.​
- Other traditional uses: Bark and hulls in medicine; serves as grafting rootstock for other walnut species; provides antiseptic effects for wounds and inflammation.​
