MULUWERK ADDISU2026-04-222024https://etd.hu.edu.et/handle/123456789/1424Cabbage is one of the most popular and widely grown vegetable crops in the world. Among the factors responsible for low yields in cabbage, unbalanced use of N and NPS fertilizer was considered the major problem causing a high reduction in the potential yield of cabbage. Hence, a field experiment was conducted in 2023 main cropping season to investigate the effect of N and NPS fertilizer on growth, yield, and yield components of cabbage in Kofale district. The experiment consisted of a factorial combination of three rates of NPS (0, 100, and 200 kg ha -1 ) and four rates of nitrogen (0, 100, 200, and 300 kg ha-1). The interaction effects of N and NPS fertilizer were found to have a significant impact on days to 50% head initiation, days to 90% head maturity, plant height, leaf length, leaf width, head length, head width, folded number of leaf head diameter, fresh and dry head weight, and marketable head yield. The highest head dry weight (0.174 kg plant -1 ) and marketable 118.34 t ha -1 ) head yields were obtained by 200 kg ha -1 NPS and 300kg ha -1 N rate of fertilizer, which were significantly on par with 100 kg ha -1 NPS and 300 kg ha -1 N rate of fertilizer that recorded 118.01 t ha -1 marketable head yields of cabbage. Therefore, the use of 200 kg ha -1 NPS and 300 kg ha-1 N can tentatively be recommended for cabbage producers in the study area.en-USCabbageFertilizerhead yieldNitrogenNPSThesis