Recent Results on Strangeness Production from STAR

We report recent results of strangeness production in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}=54.4\text{GeV}$ and Al+Au fixed-target collisions at $\sqrt{s_{\mathrm{NN}}}=4.9\text{GeV}$ from the STAR experiment at RHIC. The collision-energy dependence of strange hadron yields is presented. The p_T dependance of nuclear modification factor (R_CP) and baryon to meson ratio ($\bar{\Lambda }/K_S^0$) are measured to study the recombination and parton energy loss mechanisms. The STAR fixed-target data are compared to the previous published data from different AGS experiments. The physics implications for collision dynamics are discussed.