Deep rooted vegetation such as forest trees can increase the available potassium content of surface soil horizons even though no potassium is added to the soil profile.

Question

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Deep rooted vegetation such as forest trees can increase the available potassium content of surface soil horizons through a process called weathering. As the roots grow deeper into the soil, they break down rock minerals containing potassium, releasing it into the soil. This process can gradually increase the amount of available potassium in the soil without any additional input.

Deep Rooted Vegetation Such as Forest Trees Can Increase the Available