Seleksi Efektivitas Bakteri Dekomposer terhadap Limbah Tanaman Jagung Selection for Effectiveness of Decomposer for Maize Stover Faesal, Nurasiah Dj, dan Soenartiningsih

Balai Penelitian, Tanaman Serealia, Jl Ratulangi, No Maros, Sulawesi Selatan, Indonesia
Maize stover is difficult to decompose naturally, therefore special treatment is needed to accelerate the decomposition process. Research was aimed to evaluate the effectiveness of decomposer bacteria for maize stover to be used as organic fertilizer. The research was conducted in South Sulawesi Indonesia from June to Desember 2013, consisted of collecting soil samples taken from the bacterial natural habitats ie: maize planting site, soil under the heap of stalk and maize cob, soil under the
more » ... ap of rice straw and husk, and soil under the heap of sorghum stalk. The soil samples were brought to the Pest and Diseases Laboratory for the isolation of bacteria. A total of 119 isolates were collected, and were screened under 50o C temperature, where 29 isolates were found as decomposer bacteria. The 29 isolates were tested in vitro using stalk plus leaf of maize, and 16 strains were found as effective bacteria. The green houses experiment tested 16 strains for effectiveness using 0.5 kg of stalk plus leaf of maize. There were 6 strains of effective decomposer bacteria, which were more effective compared to the commercial EM4 bacteria as control. Those effective isolate decomposer bacteria were: E7.1, E7.3, B7.1 (Bacillus sp.), E7.7 (Pseudomonas sp.), H7.1 (Escherichia sp.), and C4.1 (Micrococcus sp.).