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This chapter discusses soil fertility and soil organic matter as the foundation of sustainable agriculture

emissions are methane from ruminant animals and rice cultivation, and from nitrogen application to soils

Land degradation has resulted from population growth as well as soil erosion, salinization, pollution

Soil and agriculture are part of this equation; we tend to think of soil as dirt, but it is a living

The bottom line is integrated soil fertility management. 

Species diversity is important for soil fertility.

The impacts of extraction can be highly complex and impact air, water, and soil at different time scales

The production of fertilizer, livestock rumination, burning of fields, and anaerobic processes in the soil

We have many ways of managing the crop, the soil, and the resources along with it.

interactions between crop growth and the environment, as well as the biophysical essence of processes in the soil