When you buy organic food you are reducing or eliminating a whole range of invisible wastes. Current chemically based agriculture consumes one calorie of energy per calorie of food produced, on average. Organically grown foods require considerably less energy to grow, since this enormous energy use is largely accounted for by the energy required to produce the chemical fertilizers that agribusiness relies upon.
Chemically based agriculture seldom takes soil culture and replenishment into account. In chemically based agriculture, soil is regarded more or less as a medium in which the plants will root, to which fertilizers will be added, and on top of which herbicides will be applied. In these agricultural systems the preservation of soil structure, and the return to the soil of organic matter and micro nutrients, and the support of soil biota, are not considered.
As a result, the soils of the Western World suffer terrible degradation. This soil degradation constitutes an invisible waste that is on-going, insidious and largely masked by the use of more of the chemicals that are helping to create the situation in the first place. This soil damage has very serious long range implications. In effect we are mining the soil that we rely upon for our very existence as living beings.
Organic farming employs practices which replenish and revitalize the soil. Organic farming attempts to restore, rebuild and retain the soil which we rely upon. By purchasing organic food you are working to prevent soil degradation and loss, a waste which we as human being simply can not afford to maintain.