Deep Roots for Dynamic Accumulation?

The article focuses on the effect of the deepness of the plant's roots from the soil to the nutrients it obtained. Topics discussed include the impact the ratios between the roots' depth and width on the amount of nutrients obtained by the plants, the amount of the water needed by the plants considering the moisture it absorb, citing that moisture is absorb from the upper soil horizons, and the humus which obtained by the plants which is contained by the near upper surface of the soil.