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Soybean seeds are the source of vegetable protein-based that most consumed in Indonesia, but apparently the production is unable to compensate the rate of increase in community needs. This study aims to determine the effect of Rock Phosphate (RP), zeolite and quail manure to enhance potassium (K) uptake and yield of soybean in Alfisols. A field experiment was conducted in June-October with a single factor Randomized Complete Block Design (RCBD) consisting of 9 treatments and 3 blocks (replicates). The dosage of RP, zeolite and quail manure used was 0 t ha-1, 2.5 t ha-1and 5 t ha-1. The results showed that zeolite 5 t ha-1 + quail manure 2.5 t ha-1 tended to increase K uptake. The combination of RP 2.5 t ha-1+ quail manure 5 t ha-1 significantly increases the number of filled pods and seed weight per plot. RP 5 t ha-1 + zeolite 5 t ha-1+ quail manure 5 t ha-1 also affects the number of filled pods and seed weight per plot. The treatment zeolite 2.5 t ha-1+ quail manure 2.5 t ha-1also affects the number of filled pods.