Translations:Oyas/6/en

• water consumed does not evaporate, so the soil is not washed away, and fungal diseases caused by damp foliage (e.g. mildew) are prevented.
• water spreads slowly through the soil, giving neighbouring roots time to take advantage of it
• plant (or tree) roots sink into the soil, rather than remaining on the surface
• when the soil is already wet (e.g. after a heavy rain) the water stays in the oya
• watering is quicker (just fill the oya) and simpler (you can leave it to a neighbour who doesn't garden)
• the water in the oya is brought up to temperature, so there's no thermal shock for the plant

To save time:

• producing several oyas in a single session saves a lot of time, as a large part of the work consists of preparing and cleaning the site.
• it's easy to divide up the work between several people, as many stages can be carried out in parallel

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