Is the odd groundnut, instead of growing in the soil, growing in the air and absorbing nutrients from the air?

A seed falls into the soil and takes root and germinates. Green plants can not be separated from the soil layer, this old thought in everyone's heart unshakeable. But now, more and more developed technological advances, so that many surprising things into reality. Usually fruit grows on trees, but its roots are deep in the soil. But ingredients like potatoes, carrots and also groundnuts, we are eating its underground stems, and therefore consuming this part, which is all grown inside the soil layer. If groundnuts were placed in the "treetops" like Apple, it would be unthinkable, but that kind of magic does happen.

The groundnut, also called the sweet potato, grows in the soil and absorbs nutrients from the soil by its roots. If this part is exposed to the air, then it will not be able to digest and absorb the nutrients. But there is a kind of strange sweet potato, not long in the soil, and grow in mid-air, from the absorption of nutrients in the air?

But it is not a kind, but a growing method. When ordinary sweet potatoes are cultured in a cell culture solution, they can grow and develop normally without soil, provided they are rich in nutrients and water.

This method of planting sweet potatoes has many benefits, exposed to the field of view of the sweet potatoes, whether or not there is a ripe as can be seen. That convenient and quick picking, not like the traditional picking method, to dig in before knowing the groundnut growth status.

And the traditional sweet potato, after uprooting, part of the leaf is basically useless, need to replant a new crop. In the case of overhead planting, only the seedling needs to be preserved, and it can produce potatoes several times.

The overhead planting of sweet potatoes produces an interesting picture, with a huge number of sweet potatoes hanging high up, thought to be drying. But for the new planting method, everyone is most concerned about eating. As long as the nutrients provided meet the conditions, the form of overhead planting can also be cultivated with the traditional soil layer planting the same sweet potato, taste and nutrients are not easy to differ too much.