Nutrient management through fertilization enhances the capacity of the soil to deliver nutrients, and thereby increases crop production and residual crop biomass returned to the soil. However, fertilization commonly increases environmental impacts through leaching and the emission of nitrous oxide (N2O). The fertilization source (inorganic vs organic) has a large effect on the nutrient delivering capacity, soil carbon sequestration and emissions. Fertilization indirectly enhances also the water delivery capacity of the soil, because a more vigorous crop explores a larger volume of soil. The production of synthetic fertilizers is energy intensive and is associated with CO2 emissions.