The effect of particle size and dosage coffee leather waste compose on growth and product of edamame soybean (Glycine max L. Merill) variety Ryoko

Coffee skin’s waste has not been utilized optimally, causing the stench and fluid that pollute the environment. One effort to overcome these problems is by utilizing the waste of coffee skin to compost. Therefore, the provision of coffee skin’s waste compost is expected to increase the growth and yield of edamame soybean. This research was conducted in Kp. PasirVillage Cinta karya Samarang District Garut Regency. Conducted in October - December 2016. Using factorial randomized block design (RBD) with 2 factors. The first factor, particle size of 2 levels are (a1) coarse particle size of coffee compost (> 74 µ) and (a2) fine particle size of coffee compost (< 74 µ). The second factor, dosage consisting of 4 levels 5 t ha⁻¹ (t1) or 20 g plant⁻¹, 10 t ha⁻¹ (t2) or 40 g plant⁻¹, 15 t ha⁻¹ (t3) or 60 g Plant⁻¹, 20 t ha⁻¹ (t4) or 80 g plant⁻¹ to obtain 8 combinations of treatment level and repeated 4 times. Treatment (a2) fine particle size of coffee compost (< 74 µ) and dosage of (t4) 20 t ha⁻¹ or 80 g plant⁻¹ had an effect on the height parameters of the plant at 7 - 21 HST with the highest yield average 13.72 cm, 22.48 cm and 34.58 cm, particle size treatment and coffee skin’s compost dosage influenced independently that is plant height at 28 days after plant, the shoot root ratio, the number of seeds per crop, the number of pod per crop and pod weight. Coffee leather waste compost can be used as organic fertilizer for soybean plants. Compost size <75 µ can be done to facilitate nutrient absorption for plants.