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A field experiment was carried out during 2018 and 2019 summer seasons to test the effect the interaction between two deficit irrigation treatment (DI1=100% ETo, DI2=80% ETo), plus control (FI= 120% ETo) and three planting densities (PD) of intercropped sesame (CS1=20% PD, CS2=40% PD, CS3= 60% PD) with peanut (100% PD) interplanted within orange trees on land and water productivities, as well as farmer’s profit. The results showed that the highest peanut and orange yields were obtained under application of FI-CS1 and the highest yield of sesame and its components were obtained under application of FI-CS3. Irrigation with DI1 slightly reduced the yield of the three crops, whereas irrigation with DI2 highly reduced the yield of the three crops. The highest value of land equivalent ratio (LER), water equivalent ratio (WER), farmer’s total return and monetary advantage index were obtained under application of FI-CS1, with slight reduction under DI1 and high reduction under DI2. The current study recommend orange farmers to interplant the sesame-peanut intercropping system (CS1) within the young orange trees for additive farmer profitability and increasing LER and WER under either irrigation with FI or DI1.

Keywords: Land equivalent ratio, water equivalent ratio, farmer return, monetary advantage index