AbstrakSampah organik seringkali menimbulkan bau dan penyakit. Belakangan ini, ditemukan kegiatan untuk mendaur ulang sampah organik dengan metode biokonversi. Umumnya, organisme yang berperan dalam proses biokonversi ini adalah bakteri, jamur, dan larva serangga. Larva serangga Hermetia illucens / Black Soldier Fly (BSF) ini sering digunakan sebagai agen biokonversi, dan lebih dikenal dengan istilah "maggot". Penelitian ini bertujuan untuk mengetahui pengaruh berbagai jenis media pertumbuhan maggot, dengan parameter biomassa maggot, wadah, dan kondisi media tumbuh maggot. Media yang dipakai adalah campuran dedak dengan ampas tahu, ampas kelapa, dan tulang ayam. Wadah yang digunakan yaitu ember dan keranjang. Berdasarkan hasil analisis, setiap dosis perlakuan (media) memiliki pengaruh terhadap biomassa maggot. Media campuran dedak dengan tulang ayam berpengaruh signifikan terhadap biomassa maggot, dibandingkan dengan media campuran dedak dengan ampas tahu dan campuran dedak dengan ampas kelapa. Besarnya nilai sig. berkisar 0.000 -0.002 (nilai sig. (tabel) < nilai sig. α (0.01)). Penggunaan wadah yang berbeda (ember dan keranjang) tidak berpengaruh terhadap biomassa maggot, dan kondisi media yang berminyak, serta terlalu basah (berair) tidak menghasilkan maggot. AbstractOrganic waste often causes odors and diseases. Recently, activities have been found to recycle organic waste by bioconversion methods. Generally, organisms that play a role in this bioconversion process are bacteria, fungi, and insect larvae. Insect larvae Hermetia illucens / Black Soldier Fly (BSF) is often used as a bioconversion agent, and more commonly known as "maggot". This study aims to determine the effect of various types of maggot growth media, with maggot biomass parameters, containers, and growing media conditions maggot. The medium used is a mixture of bran with tofu, coconut pulp, and chicken bone. The containers used are buckets and baskets. Based on the analysis, each treatment dose (medium) has an effect on maggot biomass. Bran-blended media with chicken bone had a significant effect on maggot biomass, compared to bran-mixed medium with tofu and bran-mixed mixture with coconut pulp. The value of sig. Ranges from 0.000 -0.002 (sig. (Table) < sig. α (0.01)). The use of different containers (buckets and baskets) has no effect on the maggot biomass, and the oily, too wet (watery) media conditions do not produce maggots.
Waste is a source of environmental pollution because it causes unpleasant odors, polluting water and soil and is seen as aesthetically reducing the beauty of the environment. This study aims to determine the effect of using vegetable waste as a nutrient addition to hydroponic media on the growth of mustard greens (Brassica juncea L.). The method used in this study was an experimental method with a randomized block design (RBD) consisting of 5 treatments with 6 repetitions, namely P0 (control), P1 (20ml POC + 40ml AB mix), P2 (30ml POC + 30ml AB mix), P3 (40 ml POC + 20 AB mix), and P4 (60 ml POC). This research was conducted at the Center for Agricultural Mechanism Development-Tangerang, Banten, and was conducted in March-July 2018. The observation variables were plant height, fresh weight, and plant dry weight. The research data were analyzed using the normality test and homogeneity test as a prerequisite. It was then tested with ANAVA test and the Leastest Significant Difference test 5% (LSD 5%). The results of this study indicated that the application of liquid organic fertilizer from vegetable waste to P2 with a dose of 30 ml POC + 30 ml AB mix gave the best results on plant height parameters with an average of 36.93 cm, fresh weight with an average of 41, 79 grams, and dry weight with an average of 2.34 grams. From this study, it can be concluded that the utilization of vegetable waste as an addition of nutrients to hydroponic media has an effect on the growth of mustard greens (Brassica juncea L.).
Lettuce is a vegetable that is easily cultivated and can be a source of essential vitamins and minerals for the body. This study aims to determine the effect of using tofu wastewater as a nutrient addition to hydroponic media on the growth of lettuce (Lactuca sativa L.). The method used in this study was an experimental method with a randomized block design (RBD) of 5 treatments and 6 repetitions. The treatments were P0 (0 ml POC + 60 ml AB mix/kontrol), P1 (20 ml POC + 40 ml AB mix), P2 (30 ml POC + 30 ml AB mix), P3 (40 ml POC + 20 ml AB mix), dan P4 (60 ml POC + 0 ml AB mix). The research data were analyzed using the normality and homogeneity tests as a prerequisite test. These were then followed by the ANAVA and LSD tests at the 5% level. The application of tofu wastewater as a nutrient addition in P2 treatment had the best results with an average plant height of 22.55 cm, wet weight of 5.73 g, and dry weight of 0.34 g. Therefore, it can be concluded that the utilization of tofu wastewater as a nutrient addition to hydroponic media affected the growth of lettuce (Lactuca sativa L.).
The 2013 curriculum requires learning materials to improve the competence of knowledge, skills, and attitudes to create valuable work. This decomposed leaf bone handicraft activity is a concrete example of fulfilling 2013 curriculum achievements. Besides helping to understand biology lessons, the activity of making leaf bone crafts can foster an entrepreneurial spirit for students. Therefore, in this community service activity, training to make handicrafts from leaf bones is given to teachers and students in SMA N 1 and SMP 2 Banyuputih, Situbondo. The training was attended by 23 students and one teacher at SMA N 1 and dam 20 students and one teacher at SMP 2 Banyuputih, Situbondo. The training is carried out by the method of delivering material and direct practice. The activity was also carried out with direct discussion with participants. The results of this training activity showed that all participants gained new knowledge and skills, namely how to make crafts made from leaf bones. Craft made of leaf bone is very attractive to students because students can know the bone structure directly. This dedication activity provides insight to both students and teachers to take advantage of local wisdom around it to be more valuable.
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