Ventilation: Ventilating the soil not only improves drainage but also makes roots and underground organisms breathe. Ventilation can be achieved with most of the methods that improve drainage.
Processability: Heavily clayed soil is hard to work on. To improve this, drainage methods can be used together with adding organic materials that the soil lacks.
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Land is so generous that it makes up for every piece of hard work. Mustafa Kemal Atatürk