Research, Extension and Education are the most prominent components of Human Resource Development (HRD) in any sector including agriculture. Research-Findings-Transfer Plans (RFTP; including the projects and plans of Research-Adaptation, Research-Extension and Research-Findings-Transfer-Pushing) which aim at production, adaptation and transfer of new technologies to farmers, are sub-systems of Agricultural Knowledge and Information System (AKIS), while improvement in HRD in agriculture being also among the goals. This research was aimed at investigating the supporting vs inhibiting factors influencing the effectiveness of RFTP on HRD in agriculture sector, Fars Province. The research is an applie one in terms of the goals, and a descriptive one based on the way the data were gathered. Research population consisted of 54 plan organizers of those plans carried out during 1385-86 farming year. They were all studied. Data was gathered through questionnaire whose statements were developed based on the previous studies and as well on the view points of plans organizers. Face validity of the questionnaire was obtained through judgment of a panel of experts, and its reliability obtained through a pilot test, and Cronbach’s Alpha was 0.94. SPSSwin11.5 was employed to analyze the data. Data was described through appropriate statistics including frequency, percent, mean, standard deviation and coefficient of variation. Kruskal-Wallis Test was employed to find out if there were any differences found among means of the different respondents’ responses. Motivation, interest and participation of plan organizers, provision of needed budget, and supporting policies were the most prominent factors influencing the plans’ success, while their presence as effective in the plans was evaluated as inadequate (by the plan organizers). Finally, suggestions were made as based on the research findings.