The featured article in this Farmer’s Almanac discusses a technique for nutrient retention in which charcoal is mixed into barren soil. Nutrients that would otherwise be washed away are bound to carbon, reducing the need for crop rotation. The almanac is printed on pulp made from plant byproduct.
Fungus may be an aid in the absorption of ionic minerals such as nitrates, phosphates, and potassium that the food crop alone may not be able to transport. Working as a secondary root system, fungus can also protect plants against toxic metal concentrations.