Feeding is a basic human need. The way which food is been produced has changed more in the last 50 years than in the previous 10,000 (Food Inc). Therefore, during the last decades questions and arguments have come out to predict what the future of agriculture will be. Nowadays, because of increasing population pressure, alternatives are needed. On the one hand, traditional practices do not conserve the quality of soils: stocks of organic matter are rapidly depleted and erosion pulls fine particles out of the surface horizons. On the other hand, advances in technology have contributed to improvements in agriculture and food production since the mid-twentieth century (FAO). Nevertheless, these modern agricultural practices that are being used