What is Pueraria Mirifica?
Kwao Krua is the amazing herb with manifold benefits for various usages such as for medicine, food supplement, and cosmetics. Currently, there are four main types of Kwao Krua which are Pueraria Mirifica (White Kwao Krua), Butea Superba (Red Kwao Krua), Mucuna Macrocarpa Wall (Black Kwao Krua) and Kwao Krua Mor (Dull Grey Kwao Krua). However, the most famous type is Pueraria Mirifica.
Pueraria Mirifica has been known for a long time and is considered the queen of Thai herb. It is also known as Pueraria candollei Grah. var. mirifica (Airy Shaw et. Suvatabandhu) Niyomdham which is classified in Leguminosae family. Formerly, this herb was used for rejuvenation in elder people. Nevertheless, the current researches reveal that Pueraria Mirifica contains natural hormone-like estrogen called Phytoestrogens, so it is now widely used such as for health improvement, appetite booster, sleeping support, pain relief, eye improvement, hair nourishment, skin improvement, and breast enhancement. Active compounds found in Pueraria Mirifica include:
- Isoflavones such as daidzein, genistein, kawakhurin, and kawakhurin hydrate
- Isoflavone Glycoside such as daidzin, genistin, puerarin, and mirificin
- Coumestans such as coumestrol and mirificomestrol
- Natural phytoestrogen
- Other compounds such as sugar, fat, protein etc.
How to Cultivate Sardi 190-Pueraria Mirifica
To plant Pueraria Mirifica, the soil must be prepared well in a specific way, while none of fertilizer is used during the cultivation. Start by turning the clay soil into loam soil. Then, add some manure to the soil for fertility. This process is important as it can affect the quantity of Pueraria Mirifica tubers. Apart from preparing the soil, water controlling is also essential. This is because at the first year, Pueraria Mirifica has to rely on a lot of water for growing. Furrow planting is recommended to allow the roots to absorb water easier. After preparing the furrow, pour some compost manure and loosen the soil with a disc harrow. Mineral licks are also needed to help store the gas for the growth of Pueraria Mirifica.
What is Sardi 190-Pueraria Mirifica?
Pueraria Mirifica is the traditional herb which is found in almost every region of Thailand, especially in the North. There are many species of forest Pueraria Mirifica. However, not all of them can be used as they can be toxic, ineffective or provide less active compounds. Also, it is found out that the harvesting of Pueraria Mirifica by local people causes land problems with huge holes left behind. So, the environment and the forest ecology are damaged. The problem that can be seen clearly is soil erosion.
Thailand National Swine Research and Training Center realized this problem and the herb’s values, so they performed various researches to cultivate the herb in a more proper way. The leader of this project is Sompoch Tubcharoen, a professor at Kasetsart University, Kamphaeng Saen Campus. At first, the productivity was very low. Though the nursed root grafting technique was created since 1999, but the propagation was too slow.
After 10 years of effort on researching, the researchers finally discovered the most proper cultivation of Pueraria Mirifica which was the cutting technique and tissue culture. This came to the discovery of the best species called Sardi 190 which provides more than three times higher active compounds than other ordinary Pueraria Mirifica. Cultivated under the proper method and safe environment, Sardi 190-Pueraria Mirificatherefore could be spread faster and provide higher productivity. The cultivar Sardi 190 is consequently considered the best Pueraria Mirifica ever.
Cultivation of Sardi 190-Pueraria Mirifica can be performed in 3 ways as below.
3. Nursed root grafting
For seeding, plant the seeds in a tray that is filled with rice husk ash. Leave for 45 days and move the sprouts to the nursery bags. After 60 days, transplant seedlings to the outdoor plot. Make sure to get the plot ready for planting by using a tractor to open the soil horizon first. The best time to start planting Pueraria Mirifica is in April.
The planting can be in the tied ridges or a plain land, depending on the plot zone whether it is in the lowland or upland. The most proper soil for planting is loam or sandy loam. Also, the watering system must be controlled well to avoid flooding problem.
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