A field experiment was carried out at Ismailia Agric. Res. Station, ARC during the successive winter growing seasons of 2015 and 2016. Wheat crop (Triticum aestivum L,) was cultivated under sprinkler irrigation system to study the effect of soil amendments (bentonite and potassium humate) on soil chemical properties of sandy soil, under different nitrogen doses (100, 75 and 50% N), along with wheat productivity and nutrients uptake. Results revealed no significant effect of mean pH values of different treatments compared to control. Conversely of results indicated increases of OM and CEC under effect of either bentonite or potassium humate; no significant effect was obtained among rates of nitrogen. Results, generally, showed positive responses of available N, P and K compared to control treatments. Finally, results revealed significant positive responses of total yield (straw and grains) along with total content of nutrient elements. From the present study, soil conditioner (combination of bentonite and potassium humate) was favorable for soil parameters of chemical soil properties of sandy soil which reflects on increase soil fertility. Use of 75 or 50 % N rates instead, of 100% N, being suggested whose difference was not significant