Herbs & Plants

Vigna angularis

Botanical Name: Vigna angularis
Family: Fabaceae
Kingdom: Plantae
Order: Fabales
Genus: Vigna
Species: V. angularis

*Azukia angularis (Willd.) Ohwi.
*Dolichos angularis Willd.
*Phaseolus angularis (Willd.)

Common Names: Adzuki bean, Azuki, Aduki bean, Red bean, or Red mung bean

Habitat: Vigna angularis is native to E. Asia and the Himalayas, – probably originated in Japan or southern China.

Vigna angularis is an annual vine growing. It grows usually about 30-90 cm in height at a fast rate. …….CLICK & SEE THE PICTURES

The adzuki bean has a taproot type of root system that can reach a depth of 40–50 cm from the point of seed germination.

The leaves of the adzuki bean are trifoliate, pinnate and arranged alternately along the stem on a long petiole. Leaflets are ovate and about 5–10 cm long and 5–8 cm wide.

Adzuki flowers are papilionaceous and bright yellow. The inflorescence is an axillary false raceme consisting of six to ten (two to twenty) flowers.

Adzuki pods are smooth, cylindrical and thin-walled. The colour of the pods is green turning white to grey as they mature. The size is between 5–13 cm x 0.5 cm with 2 to 14 seeds per pod. Pod shatter during seed ripening and harvesting might be a difficulty under certain conditions.

The seeds are smooth and subcylindric with a length of 5.0-9.1 mm, width of 4.0-6.3 mm, thickness of 4.1-6.0 mm. The thousand kernel weight is between 50 and 200 g. There are many different seed colours from maroon to blue-black mottled with straw

Adzuki bean is a plant of the subtropics, and is widely cultivated from the temperate zone to higher elevations in the tropics, where it is can be grown at elevations from 420 – 1,500 metres. It grows best in areas where annual daytime temperatures are within the range 15 – 30°c, but can tolerate 5 – 36°c. The plant cannot tolerate frost. It prefers a mean annual rainfall in the range 900 – 1,300mm, but tolerates 530 – 1,800mm. It is generally seen as a short-day plant, requiring a day length of 12 hours or less to initiate flowering and fruiting, though cultivars can vary in their response to day length. Requires a sunny position. Succeeds in a wide range of well-drained soils. Prefers a pH in the range 5.5 – 6.5, tolerating 5 – 7.5. Some cultivars are fairly drought tolerant. The plant can commence cropping within 60 – 190 days from seed. Average seed yields range from 1 – 2.5 tonnes per hectare. In Taiwan yields of 1,450 kilos are common, in Japan 1,900 kilos, in Kenya 500 – 600 kilos and in New Zealand 1,340 – 2,240 kilos. There are many named varieties. This species has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby. When removing plant remains at the end of the growing season, it is best to only remove the aerial parts of the plant, leaving the roots in the ground to decay and release their nitrogen. Bloom Color: Bright Yellow. Spacing: 3-6 in.

Edible Uses:
Mature seed – cooked. The dried bean is boiled and used in a wide variety of dishes. The beans can also be popped in much the same way as popcorn. The dried seeds can be ground into a meal and used in soups, cakes or confections. The seeds are often sprouted and then eaten either raw or cooked. The cylindrical pods can be 6 – 12cm long, containing 6 – 14 seeds. Tender young pods are cooked as a vegetable. The seedpods are up to 10cm long. The roasted seed has been used as a coffee substitute.

Adzuki bean is commonly sweetened before eating. It is eaten sprouted or boiled. It is also used in many Chinese dishes and as a filling in Japanese sweets. Tender young pods are cooked as a vegetable. Roasted seeds are used as a substitute for coffee.

Medicinal Uses:
The beans are used to treat diseases like kidney trouble, constipation, abscesses, certain tumours, threatened miscarriage, retained placenta and non-secretion of milk. The seed sprouts are used to treat threatened abortion caused by injury. The leaves are said to lower fevers.

Other Uses: A flour made from the beans is used in making shampoos and facial creams. V. angularis is also grown as a green manure and for soil erosion control.

Disclaimer : The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplement, it is always advisable to consult with your own health care provider.


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