The effect of organic paddy field system to soil properties

Abstract

This study aims to compare the soil properties among organic paddy field and other cultivation systems. Soil profile description was done to determine the soil horizons. The characteristics of organic paddy soil were better than others as it has C-organic in horizons I and II which were 2.09% and 2.00%, respectively; black soil color in horizon I (10 YR 2/1); microbial biomass C in horizon I and II which were 98.39 μg C/g soil and 418.01 μg C/g soil respectively; and microbial biomass N in horizon I and II which were 72.59 μg N/g soil and 59.11 μg N/g soil respectively. However, the unfavorable qualities of organic paddy soil including the clay leaching from horizon I (clay 24.56%) to horizon II (clay 40.16%) and high production potential of methane (CH4) (1.81 μg CH4/kg soil/day and 1.67 μg CH4/kg soil/day, respectively in horizon I and II) need to be anticipated. The high amount of C-organic in organic paddy field affects the soil color was darker, and the increasing of clay leaching, microbial biomass C and N, and potential of CH4 production.