Effect of reactants concentration on swelling properties of cellulose-acrylic hydrogels was investigated in this study. The composite hydrogels with interpenetrated polymer networks (IPNs) comprising low amount of cellulose nanofibrils (CNFs) were synthesized through radical polymerization. Cellulose concentration was changed from 0.5 wt% to 2.5 wt% by using different amounts of water. The swelling behavior was measured in different aqueous media and fertilizers such as urea and ammonium sulfate solution. The absorption ranges of hydrogels in saline water (0.9 wt%) and ammonium sulfate (0.12 mol/L) are significantly lower than those in other absorption media (<25 g/g). The equilibrium absorption of the prepared hydrogels in urea solution, drinking water and distilled water changed from 62 g/g to 64 g/g, 54 g/g to 68 g/g, and 71 g/g to 79 g/g, respectively. Absorptions under load (AUL) data presented a slight decrease in strength at low cellulose concentration (0.5 wt%).