Reusing of Organic Waste from Tubifex sp. Substrate in nature

This study was conducted to determine whether organic waste from the substrate of Tubifex sp. can be used as inoculants to produce them through culture.   Substrate used was the mix of mud and chicken manure by ratio of 1:1, placed on the container 80×20×15 cm, water elevation 2 cm, and water debit 300 ml/min.  Inoculants number was ranged from 57 to 60 Tubifex sp. per container. The length of Tubifex sp. body was ranged from 0.9 to 3.5 cm and an individual mean weight of 2.78 mg.   Organic waste applied was 500 g, 1000 g, and 1500 g.  Rearing was performed for 50 days.  During experiment chicken manure of 0.075 g/m2 was added into culture every day.  The results of study showed that higher population of Tubifex sp. (174,227 tails/m2; 413.7 gram wet weight) was obtained by using 1000 g of organic waste.  Thus, organic waste derived from the substrate of Tubifex sp. from the nature can be reused to culture Tubifex sp. at the controlled container. Keywords: Tubifex, organic waste, population   ABSTRAK Penelitian ini dilakukan untuk mengetahui apakah limbah organik sisa hasil penangkapan cacing sutera dari alam dapat digunakan sebagai inokulan untuk memproduksi cacing sutera melalui kegiatan budidaya.  Substrat yang digunakan berupa campuran lumpur dan kotoran ayam dengan perbandingan komposisi masing-masing 1:1, ditempatkan dalam wadah berukuran 80×20×15 cm, debit air 300 ml/menit/wadah, dan tinggi air 2 cm.   Jumlah cacing yang ditebar antara 57 - 60 ekor, panjang cacing 0,9 - 3,5 cm, dengan bobot individu rata-rata 2,78 mg. Limbah organik sebagai inokulan awal cacing sutera masing-masing seberat 500 g, 1.000 g dan 1.500 g. Pemeliharaan dilakukan selama 50 hari.  Selama pemeliharaan dilakukan pemupukan menggunakan kotoran ayam sebanyak 0,075 g/m2 setiap hari.  Hasil penelitian menunjukkan bahwa populasi cacing tertinggi diperoleh dengan menggunakan limbah organik sebanyak 1.000 gram (174.227 ekor/m2; 413,7 g).  Dengan demikian, limbah organik substrat cacing sutera dari alam dapat digunakan kembali untuk budidaya cacing di wadah terkontrol. Kata kunci: Tubifex, limbah organik, populas

Natural Resistance Of Rattan Species From Sumatra Against Subterranean Termite And Its Relation To Chemical Properties (Ketahanan Alami Rotan Asal Sumatra terhadap Rayap Tanah dan Hubungannya dengan Sifat Kimia)

The main problem of rattan utilization was the ravages of destructive organisms attack. The objective of this study was to determine the natural resistance of rattan species from Sumatra against subterranean termites and its relation with the chemical characteristics of rattan. All samples were tested for resistance to subterranean termite and its chemical characteristics according to the Indonesian National Standard. Observations, percentage weight loss, termite survival and degree of attack were determined. Results showed that Calamus insignis, C. holttumii, Daemonorps verticillaris, and D. longipes included in very resistant (Class I). Korthalsia flagellaris, C. zonatus, C. laevigatus, D. sepals, C. spectatissimus, C. rugosus, and C. oleyanus included in resistance class II. Furthermore, D. micracantha included in the class of moderate resistance (class III). The cellulose content has no significant correlation (P>0.01), and lignin has a significant negative correlation (P<0.01) to the weight loss, termite survival and the degree of attack. Rattan that has resistance class I and II can be utilized as raw material of furniture and crafts, while rattan which have resistance class III require preservation treatment to extend its service life

Membangun Sikap Optimis Remaja Yatim/Piatu melalui Pelatihan Wirausaha di Dusun Sendang Biru Kabupaten Malang

Keberadaan remaja yatim/piatu sebagai salah satu sumber daya manusia dalam membangun bangsa perlu mendapat perhatian dan dukungan dalam proses pengembangan optimisme mereka dalam menghadapi kehidupan. Kegiatan pengabdian ini bertujuan untuk membangun optimisme remaja yatim/piatu melalui pelatihan wirausaha kerajinan tangan. Subjek dampingan berjumlah 15 orang yang dipilih berdasarkan kriteria kegiatan pengabdian. Pihak yang terlibat dalam kegiatan ini diantaranya Jemaah pengajian An-nisa, staf kelurahan, karang taruna dan masyarakat sekitar. Ada beberapa kegiatan yang dilakukan secara simultan dalam proses pengabdian ini. Hasil kegiatan menunjukkan adanya peningkatan optimisme para remaja dalam menghadapi kehidupannya setelah diberi pelatihan wirausaha kerajinan tangan