The number of the radio base stations (RBS) has increased in recent years in Italy, due to the rapid spread of mobile telephone technology. The analysis of the electromagnetic fields generated by RBS situated on rural-agricultural lands allows to evaluate the farm workers exposure in the surrounding area. These workers are generally unaware of their exposure and the potential risks, and are not trained to take appropriate precautions. The E-fields generated by some RBS operating in the GSM, UMTS and LTE bands and situated on agricultural land in the rural areas of Apulia (Italy) were measured.