| dc.description.abstract | Mining activities cause various effects such as reduced agricultural land, fertile land, and decreased function of environment. One of mine waste material is sand tailings. Utilization of sand tailings as growing media faces physical, chemical, and biological problems due to its very high sand fraction and very low organic matter content. This study aims to evaluate the effect of chicken manure and watering frequency to improve physical of soil simulation sand mine tailings and their effect on spinach growth. The design used was a completely randomized design with 2 factors and 3 replications. The first factor was the chicken manure doses of 0, 10, and 20 tons/ha. The second factor was the watering frequency of 2, 4, and 6 days with a volume of 750 ml / pot for each watering. The results show that chicken manure significantly increase the available pore water, but does not significantly affect the bulk density, total pore space, as well as pore drainage of the soil. Watering frequency treatment has no significant influence on the physical properties of the soil. Spinach as indicator plants can grow and adapt to the media of simulated mine tailings with and without chicken manure, watered either 2, 4, or 6 days. Chicken manure significantly affects plant height at 40 HST, but does not on the number of leaves and the weight of the plant. Spinach responses better to the application chicken manure of 10 ton/ha and 20 ton/ha than control. Treatment frequency of watering significantly affects all plant growth parameters observed. Frequency of watering two (2) days provide worse spinach production compare to the frequency of watering four (4) and six (6) days due to waterlogging and translocation of particles. | id |
