Nitrogen (N) fertilizer management is a challenge in potato production. Also Potassium(K) ertilizer often required for optimum potato yields Therefore, a study was carried out on the effect of different nitrogen and Solupotasse fertilizer levels on vegetative characteristics and yield in 2014. It was a split plot experiment based on a Randomized Complete Block Design with three replications. The main plot was four N fertilizer levels (0, 125, 250 and 375 kg N/ha) and the sub -plot as four K fertilizer levels (0, 2,4 and 6 kg K/ha). The results showed that the main effect of N fertilizer was significant on mean leaf number, mean plant height, mean tuber number and fresh tuber yield at 1% probability level and the main effect of N fertilizer was significant on Mean branch number at 5% probability level. Also, the main effect of K fertilizer was significant on mean tuber number, and fresh tuber yield at 1% probability level. The interaction effect was significant on mean tuber number, and fresh tuber yield at 1% probability level. Means comparison showed that the application of 375 kg N/ha had a significant effect on measured traits and ranked in the superior group. Also application of 0 kg/ha solupotasse was ranked in the superior group. In terms of tuber number per plant, application of N fertilizer 375 kg/ha and K fertilizer 4 kg/ha ranked in the superior group. In terms of fresh tuber yield, app lication of N fertilizer 375 kg/ha and K fertilizer 0 kg/ha ranked in the superior group.

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