Soil quality assessment in organic and non organic paddy fields in Susukan, Indonesia

Paddy is the main food crops in Indonesia. Organic farming system especially paddy, is starting to developed because the decreasing of soil quality with non organic farming system. This study aims to find out the comparison of soil quality of organic and non organic paddy fields with conventional irrigation system in Susukan, Central Java, Indonesia. This research uses descriptive explorative method with survey approach on 10 points of organic paddy field and 2 points of non organic paddy field. Statistical analysis was performed by correlation analysis and Principal Component Analysis (PCA) to determined the indicators affecting soil quality, which are called minimum data set (MDS). Indicators was selected MDS include SOC, total N, C/N ratio, qCO(2), CEC, Eh, available P, EC and permeability. The results showed that there were differences between the SQI of organic and non organic paddy fields, there are 4.2 and 3.9. Both of them are class 3 (medium), but SQI value showed that organic soil is higher than non organic soil.