This experiment was conducted to study the effects of superabsorbent on the performance on yield, yield components and some of physiological characteristic of corn under drought stress conditions. Experimental design was split plot in form of randomize complete block design (RCBD) with three replication in Birjand Azad university farm. Irrigation treatments with three levels (100, 70 and 40 percent of plant water needs) where chosen as the main plot and the Superabsorbent with four levels (0, 35, 70 and 105 kg per hectare) where chosen subplots. Result show that the highest seed yield (579.58 g/m2) was related to the optimum irrigation treatment (100 percent plant waters need) and 105 kg Superabsorbent per hectare and the least seed yield (8.17 g/ m2) was related to intensive stress treatment (40 percent plant waters need) and the control treatment (lack of Superabsorbent). Drought stress had a positive and significant effect on the amount and efficiency of the Photosynthetic matter the remobilization and also on the portion of remobilization in seed yield, but the Superabsorbent with a positive effect on the physiological characters of corn had a negative and significant effect on the amount and efficiency of Photosynthetic matter remobilization and the portion of remobilization in seed yield.
