عنوان مقاله [English]
نویسنده [English]چکیده [English]
The rapid growth of the world population has induced a double burden on the agricultural lands to produce more food through more chemical fertilizers application during the last fifty years. The production of chemical fertilizers accounts for huge amounts of energy consumptions. Over application of chemical fertilizers in this regard, not only cost economical but environmental disasters especially in developing countries. These aspects of chemical fertilizers have moltivated the developed countries to pay more attention in producing and application of biological fertilizers, however, the major reason of special attention to biological fertilizer production and application in developing countries, is the less expenses involved in the production compared to chemical fertilizers. In this respect there has been a significant effort to produce and apply biological fertilizers in Iran since 1376. One of the evidences to support this argue is the number of published scientific papars within the period of 1381 to 1389 which the number of papars raised from 5 to 25 indicates 500% growth. The same trend has been observed in the number of submitted papars to the agronomy conferences during the same period of time (from 5 to 70 papars). Despite the promising progress in research about the biological fertilizers, however, the extention and practiced application of these fertilizers is not yet well known among the farmers. Also, the role of chemical fertilizer could not be ignored in agricultural practices in future, but the utilization of biological fertilizers will always remain the major part to support and quaranty the sustainability of agricultural practices in Iran.