Where in the world are the good and accessible soils for agriculture, silviculture, and farming?

Good soil for agriculture, farming, and  silviculture contains appropriate amounts of nitrogen, phosphorous, and potassium.

Alfisols — form in semiarid to humid areas, typically under a hardwood forest cover.

Andisols — soils formed in volcanic ash and defined as soils containing high proportions of glass and amorphous colloidal materials, including allophane, imogolite and ferrihydrite

Aridisols — (from the Latin aridus, for “dry”) form in an arid or semi-arid climate.

Entisols — are soils that do not show any profile development other than an A horizon

Gelisols — are soils of very cold climates which are defined as containing permafrost within two meters of the soil surface.

Histosols — a soil consisting primarily of organic materials

Inceptisols — form quickly through alteration of parent material

Mollisols — form in semi-arid to semi-humid areas, typically under a grassland cover

Oxisols — are best known for their occurrence in tropical rain forest

Spodosols — are the typical soils of coniferous, or boreal forests

Ultisols — commonly known as red clay soils

Vertisols — a soil in which there is a high content of expansive clay