The productivity per hectare of fruit growing is higher on large farms in the Khenchela region (Algeria). This positive relationship goes against the prevailing observation stamped in the economic literature as the «inverse relationship between size and productivity» or the positive relationship between them. In particular, this article examines the relationship between farm size and tree production of different fruit species in the Khenchela region; the methodological approach is based on statistical data from a survey of administrative staff of the Directorate of Agricultural Services (DSA), the results of analysis of these data indicate that the relationship between size of holding and productivity differs according to moderating factors and land factor, in addition, productivity appears to be higher for small and large farms than for medium-sized ones, therefore it reveals potential for tree productivity in the Khenchela region by exploiting the land factor and the location of farms near wetlands which are the main factors for increasing tree productivity.