Peran Kalium Dan Paclobutrazol Dalam Pertumbuhan Dan Produksi Kentang (Solanum tuberosum L.)
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The objective of the research was to know the role of potassium fertilizer and paclobutrazol treatment on potato production. Research was conducted in Tanah Karo, North Sumatera about 250 m sea level rise. The research was done by using Randomized Complete Block Design factorial with two treatment factors. The first factor was potassium fertilizer namely 0 ; 50 ; 100 and 150 kg K2O/ha. The second factor was dose of paclobutrazol namely 0 ; 0.25 ; 0.50 and 0.75 paclobutrazol/l water. The result of the research showed that potassium fertilizer increase tuber weight/sample, but not significant response to plat height and shoot/root ratio. The paclobutrazol treatment showed to increase tuber weight/sample but decrease the shoot/root ratio. There is not significant interaction response between potassium fertilizer and paclobutrazol for all parameters.