Research ash Agung Mountain to improve the properties of soil and bean plant

Research of Mount Agung volcanic ash as a soil enhancer will be carried out in the greenhouse of the Experimental Garden of the Faculty of Agriculture. Mount Agung volcanic ash in the form of material that has not weathered, so to accelerate weathering need to add organic material. The long-term goal of this research is to know the effect of Mount Agung volcanic ash on soil properties and plant growth. The specific target of this research is to find a combination package of volcanic ash with the best organic material as a soil enhancer. The design used was factorial randomized design. The volcanic ash factor consists of 3 levels: A0 = without volcanic ash, A1 = 15% volcanic ash and A2 = 30% volcanic ash. The organic matter factor (compost) consists of 3 levels: K0 = without compost, K1 = 10 tons of compost / ha, and K2 = 20 tons of compost / ha. To determine the effect of volcanic ash as a soil enhancer will be examined several soil properties such as: soil texture, soil bulk density, total porosity, nitrogen content, phosphorus, potassium and soil pH. In addition to the nature of the soil, its effect on the growth and yield of tugak beans will also be examined. Data from observations of soil properties and plant growth will be analyzed statistically according to the design used. If the results of the statistical analysis show a real effect, it will be continued with the LSD test. Based on statistical analysis and LSD test it can be seen the combination of soil enhancers that gives the best influence on soil properties and plant growth.

Keywords: volcanic ash, compost, ameliorant, soil properties, tugak beans