This study examined agronomic efficiencies chemical fertilizer NPK (14-23-14) pearled urea (46% N), super granulated urea (USG)) and their splitting period on FKR84 rice variety agronomy parameters in Sindou’s irrigated perimeter. The experimental design was a split-plot with three replications using two studied factors. NPK applied as bottom fertilizer and urea as top fertilizer. Each replication was divided into three mains plots corresponding to the three doses of NPK (NPK1, NPK2 NPK3). Each one subdivided into four secondary plots represented by (U1, U2, U3, U4). The combined doses of NPK and urea gave twelve treatments where NPK2*U1 is the control. The three doses of NPK, 150 kg.ha-1, 200 kg.ha-1and 200 kg.ha-1 were applied at transplanting. The U1 and U3 plots received 50 kg.ha-1 of pearled urea 15 days after transplanting (DAT) and 100 kg.ha-1 at panicle initiation as the control received over 200 kg.ha-1 of NPK at transplanting. The U2 and U4, 72 kg.ha-1 of upper granulated urea 10 DAT. At panicle initiation, only the plots U1 and U2 got 100 kg.ha-1 of pearled urea. At heading, the second and fourth secondary plots received 50 kg.ha-1 of pearled urea against 50 kg.ha-1 of NPK applied on the first and thirst mains plots. The results shown that the application of 50 kg.ha-1 of NPK at heading stage over the control dose, allowed to harvest 5484 kg.ha-1 of paddy rice, yield with a recovery rate of 3,45 kg.kg-1 in year 2020 against 4976.6 kg.ha-1.ha-1 like paddy yield, corresponding at recovery rate of 4,71 kg.kg-1 in year 2021. This practice could be a strategy for chemical fertilizer management for rice yield increasing.