HE EFFECT OF BIOGAS WASTE ON NUTRIENT CONTENTS ANDMUSTARD PLANTS (BRASSICA JU NCEA L.) PERFORMANCES

The aim of research to determine the effect of sludge that mixed with plantwaste and livestock waste on soil nutrient content and Brassica juncea L. per-formances . The research method used was the experiment of adding localmicroorganism solution (LMS) of banana weevil, coconut βiber ash and eggshellβlour into sludge of quail and octopus waste as organic fertilizer with a com-pletely randomized design (CRD) method with 6 treatments and 4 replications. The treatments used consisted of P0: sludge 100%; P1 : sludge 50% + LMS20% + Ash 10% + Eggshell Flour 20%; P2: sludge 50% + LMS 20% + Ash 12.5%+ Eggshell Flour 17.5%; P3: sludge 50% + LMS 20% + Ash 15% + EggshellFlour 15%; P4: sludge 50% + LMS 20% + Ash 17.5% + Eggshell Flour 12.5%and P5: sludge 50% + LM S 20% + Ash 20% + Eggshell Flour 10%. The resultshowed that the treatment given had a very signiβicant effect (P <0.01) on thetotal N content, elements P and K, but the highest average was obtained fromP0 (100% sludge), so it can be concluded that substit ution had no effect onnutrient content. The average of total N values ranged from 1.150.10 to 2.390.40 percent, element P ranges from 2.650.19 to 5.280.19 percent andelement K ranges from 1.080.05 to 4.280.21 percent. And for Brassicajuncea L. pe rformance this treatment give a real effect (P <0.01) to the heightand weight of a mustard plant wet and did not give an effect (P <0.05) to thenumber of leaves of mustard plants. The conclusion of this study are the mixedsludge waste had a signiβicant effect on soil nutrient content and on Brassicajuncea L. performance.