Solanum melongena (eggplant) is one of the diversity of the Solanum family which is grown and widely spread in Indonesia and widely used by the community. This research explored the genetic diversity of four local Indonesian eggplant species namely leuca, tekokak, gelatik and kopek by using RAPD (Random Amplified Polymorphic DNA). The samples were obtained from Agricultural Technology Assessment Institute (BPTP) Bogor, Indonesia. The result of data observation was in the form of Solanum melongena plant's DNA profile analyzed descriptively and quantitatively. 30 DNA bands (28 polymorphic and 2 monomorphic) were successfully scored by using four primers (OPF-01, OPF-02, OPF-03, and OPF-04). The Primers were used able to amplify all of the four eggplant samples. The result of PCR-RAPD visualization produces bands of 300-1500 bp. The result of cluster analysis showed the existence of three clusters (A, B, and C). Cluster A (coefficient of equal to 49%) consisted of a gelatik, cluster B (coefficient of 65% equilibrium) consisted of TPU (Kopek) and TK (Tekokak), and cluster C (55% equilibrium coefficient) consisted of LC (Leunca). These results indicated that the closest proximity is found in samples of TK (Tekokak) and TPU (Kopek).

Amphibians play an important role in the ecosystem, where they act as predators of various types of insects and are important biological indicators. However, in reality some amphibian habitats are lost and their activities are disrupted due to the construction of inns and restaurants. This study aims to determine the diversity of amphibians in the Bogor Natural Park. This research used VES (Visual Encounter Survey), in which samples were captured by hand and identified morphologically. The sample in this study was anura in the area where the natural park was located. Data were collected and analyzed using the Shannon-Wiener Index, Relative Abundance Index, and Species Richness Index (Margalef). A total of 13 species were obtained which belong to 6 families. Amphibian diversity index H’ = 0.929. The highest abundance of Chalcorana chalconota was 78.81%. Species Richness Index DMg = 1.858. This study proved that the diversity of amphibians in Bogor Natural Park is low and the level of species richness is in the low category.

Penelitian ini bertujuan untuk mengetahui keanekaragaman dan pola penyebaran insekta permukaan tanah di Taman Nasional Gunung Gede Pangrango (TNGGP). Penelitian ini dilakukan di Resort Cisarua TNGGP Jawa Barat, dilaksanakan pada bulan Februari-Maret 2015. Teknik sampling yang digunakan adalah Pit Fall Trap dari transek garis. Analisis data menggunakan pengukuran Kelimpahan Relatif (KR), Indeks Kekayaan Spesies (R), Indeks Keanekaragaman Shannon-Weaver (H'), Indeks Kemerataan Spesies (E), dan Indeks Dominansi Simpson (C), Indeks Kesamaan Sorensen (Cs) dan Indeks Morista (I). Hasil penelitian menunjukkan ordo yang ditemukan dari keempat lokasi diantaranya ordo Coleoptera, Orthoptera, Hymenoptera, Isoptera, Dermaptera Dan Diptera. Keanekaragaman insekta tertinggi dari keempat lokasi berada di daerah hutan primer dengan nilai H’= 2.20, E = 0.95, C = 0.12 R= 3.62, dan memiliki dominansi terendah yaitu C = 0.12. Sedangkan keanekaragaman insekta terendah berada di daerah ladang pertanian H’= 1.50, E = 0.65, R= 2.14, dan memiliki dominansi yang tinggi yaitu C = 0.31. Pola penyebaran yang terjadi antara keempat lokasi diantaranya ladang pertanian, hutan sekunder, tepian sungai, dan hutan primer dari masing-masing plot memiliki pola penyebaran yang berkelompok.

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.).