First, seeds need to be soaked with warm water (2 boiling: 3 cold) for about 12 hours. After that, you take it out to dry and then incubate it in a towel / cloth for about 9-12 days for the seeds to crack. Next, you bring seeds into pot or plant them directly into the nursery soil.
If incubating in pots, you should choose a polyethylene bag with size 7x12 cm and pre-punched drainage holes in the bottom. Put in pot with clean soil, rice husk ash and decayed manure (3 soil: 1 manure), then use a stick to poke a hole 0.5 - 1cm deep to let seeds in and gently fill it up.
At this stage, every 12 to 15 hours, you need to water warm with a sprinkler or sprinkler system to prevent seeds from moving. In addition, you should use a canopy to limit the impact of sun and rain. Plants will germinate and grow after about 7 days of sowing.
Above are the step-by-step instructions for growing beans that have been tested and proven successfully. So, feel free to apply.