The main objective of this study was to determine impact of the agricultural extension radio program, (Ardel-Mahroust), on the acquired knowledge by vegetable and fruit farmers living in each of Upper Egypt (Fayoum and Menia governorates), and the Delta (Kalioubia and Rehire governorates). The study data were collected during the period March-April as a part of a project, conducted by AERDRI, for evaluating the agri­cultural extension radio program, (Ardel-Mahrouse). The study sample encompassed 400 farmers living in four Govemorates (Kalioubia and Be­hira from the Delta, and Menia and Fayoum from Upper Egypt). The study comprised 200 fruit and vegetable farmers from Upper Egypt, and another 200 fruit and vegetable farmers from the Delta (100 respon­dents from each Governorate). Three preconditions were determined previously to be met by the study participants: (1) they work primarily in agriculture, or agriculture and additional work(s): (2) they listen regularly to the program with a minimum of one episode/month; and (3) they are willing voluntarily to participate in the study. A pre-tested written questionnaire and face-to-face, or interper­sonal interviews were used in collecting the study data. Frequency. mean, standard deviation, t-test, Zero-order correlation, and step-wise multiple regression were used in analyzing the obtained study data. Rela­tionships between farmers' knowledge related to each of vegetable and fruit crops accrued from listening to the radio program (the dependent variables), and some studied independent variables (age, education, fam­ily size, additional work(s), agricultural land ownership, wife's education, listening habits, and knowledge discussion with others) were determined. The study findings, the study limitations, and farmers' suggestions were explained.