Improving Physical and Chemical Soil Characteristic on Potatoes (Solanum tuberosum L.) Cultivation by Implementation of Leisa System

The use of compost and N, P, K as fertilizer in LEISA system as an effort to increase the productivity of potato in Bali so that up to 30 tones / ha performed in this study. Compost from chicken and cow dung is used at a dose of 10 to 25 tones / ha. Application of LEISA systems can improve the physical and chemical characteristics of the soil so as to achieve ideal conditions for the cultivation of potatoes. By 2015, the land has the characteristics: porosity of 47 ± 5.1%, the water holding capacity of 40.9 ± 4% w.b, organic matter content of 6.2 ± 1.2%, the cation exchange capacity 25-29 me / 100 g and pH 6.7 to 6.9. Productivity potatoes applied for land LEISA systems over 3 years is 28-34 tones / ha with tuber super quality as much as 11 to 22.2 tones / ha.