AbstrakSampah oraganik merupakan bahan organik buangan dari kegiatan rumah tangga, pasar, perkantoran, rumah penginapan, hotel, rumah makan, industri atau aktivitas manusia lainnya. Sampah daun kubis merupakan salah satu contoh sampah organik yang berasal dari aktivitas pasar. Pada pasar Tanjung Jember volume terbesar sampah sayur adalah sampah daun kubis. Upaya untuk mengatasi pencemaran karbon oleh sampah daun kubis adalah dengan memanfaatkan organisme detritivor cacing tanah Lumbricus rubellus Hoff. Jenis penelitian terdiri dari dua macam yaitu penelitian pertama adalah penelitian lapang yang dilakukan selama 28 hari. Penelitian kedua adalah penelitian laboratorium dilakukan selama satu minggu menggunakan teknik gravimetri dengan hasil akhir berupa nilai karbon organik pada tiap-tiap parameter. Penelitian ini bertujuan untuk mengetahui besar efektivitas degradasi karbon organik yang dilakukan cacing tanah L. rubellus terhadap sampah sayur kubis. Penelitian dilaksanakan dengan menggunakan Rancanagan Acak Lengkap (RAL) yang terdiri dari 2 taraf perlakuan pemberian sampah sayur kubis yaitu 140 g/minggu dan 280 g/minggu. Setiap perlakuan terdiri dari 20 gram cacing tanah dan 3 kali pengulangan. Pakan cacing tanah diperoleh dari hasil fermentasi sampah sayur kubis selama 7 hari. Hasil penelitian ini menunjukkan bahwa efektivitas degradasi karbon organik sampah buah dengan pemberian biomassa sampah 140 g/minggu sebesar 14,74% dan pemberian biomassa sampah 280 g/minggu sebesar 17,19%.

Earthworms can be used as an indicator of fertility or soil quality. Its ability to decompose organic waste is very high. On the other hand, the organic waste generated by various human activities is enormous and continuous, including vegetable and fruit waste. In particular, pineapple peel waste which is a tropical fruit in traditional markets continues to be abundant and often becomes an environmental problem. The purpose of this study was to evaluate the rate of decomposition of pineapple peel waste by earthworms (Lumbricus rubellus, Hoff) based on different doses and water content. The research was conducted at the Biological Conservation Laboratory, University of Jember. Pineapple peel waste was taken from traditional markets in the city of Jember. Combination treatment between pineapple peel waste water content (dry and fresh) and addition of pineapple peel waste per week as much as 140 g / week and 280 g / week. The soil medium used was 1500 g and inoculated earthworms with biomass 20 (± 0.53) grams at the beginning of the treatment. The evaluation of decomposition rate was based on soil organic C content and was evaluated weekly for 5 weeks.The results showed that the dried pineapple peel waste obtained a faster decomposition rate than the wet condition (fresh). The highest average speed in the treatment of pineapple peel waste with drying and weekly additions of 140 g / week was 86.76% per week and the lowest was in the combination treatment of wet pineapple waste (fresh) and weekly addition of 28 g / week of 63.17% per week. The decomposition rate at the beginning of incubation or the highest first week was followed by a decrease in speed based on the time of incubation.