Effect of bioremediation in soil of paddyfield contaminated by chromium (Cr) on soil fertility and chromium uptake by plant in Karanganyar, Central Java

Suntoro Wongso Atmojo, Danang Taruno, Sri Hartati, Retno Rosariastuti

Abstract: This research aimed to study the effect of bioremediation of soil contaminated by chromium on soil fertility and reviewing the growth of rami and mendong during the bioremediation process. Field experiment was conducted in Waru Village, Kebakkramat, Karanganyar on May to November 2016. This research was factorial using Completely Randomized Block Design as the based design consist of three factors: inorganic fertilizers (P), chelator (B), and plant (T). Variables observed were: N total, P available, K exchange, C organic, soil pH, total Cr, colony of bacteria, and plant biomass. Data was analyzed by statistical analysis using Anova test then continued by Duncan Multiple Range Test and Pearson’s correlation test. The results showed that bioremediaton treatment affected to several parameters. If it compared with control, the effect of bioremediation to soil fertility was an increase of N total by 40.9%, P available by 11.34%, K exchange by 2.71 %, C organic by 34.78%, and soil bacteria by 8.76% and decrease of soil Cr levels by 12.35% and soil pH by 3.03%. Rami plants uptaking of chromium was higher than that in mendong plants by 37.29%, i.e. with the average Cr uptake of rami 92.85 μg and mendong 72 μg.

Keywords: bioremediation; chromium; mendong; paddyfield; rami; soil fertility

Date published: 2019-01-04