Judul: Kapasitas Konsumsi Larva dan Imago Epilachna vigintioctopunctata (Fab.) (Coleoptera: Coccinellidae) pada Inang Terung (Solanum melongena) dan Tomat (Lycopersicum esculentum).
Abstrak: The hadda beetle of Epilachna vigintioctopunctata is an important pest on Solanaceae plants. Crops devoliation are strongly influenced by food consumption pattern on each host plant. The aim of this study is to compare the consumption of E. vigintioctopunctata on eggplant and tomato leaves and its influenced on the acceleration of larval growth rate, the body size, the length of each instars periods, and standing position of the beetles during eating. Each tested leaf was taken from two-month-old host plants and fed to newly hatched instars larvae. The daily leaf areal consumed and the body lengths of insect were measured until the adult died. The changing of instars morph and the position of insect on the leaf surface were also observed. The average rate of food consumption by fourth instar larvae and adult were significantly higher on eggplants 190.5 and 190.8 mm2/days compared with tomatoes 76.40 and 127.1 mm2/days, respectively. The total areas of damaging leaf within 17.2 days during larval and adult feeding stage were 2069.1 mm2/insect on eggplants and 1067.3 mm2/insect on tomatoes. Food consumption on the eggplant shortened the length of the pupal period and increased the longevity of adult to become 4 and 9 days, respectively. Highly food consumption by the third instar larvae almost produced the same size of the next fourth instar, further consumption caused the lengthened of pupal size and the shortened of adult on the eggplant compared with tomato. The growth rate of larval body size was 0.5-0.7 mm/day on eggplants significantly higher than tomatoes was 0.1-0.3 mm/day. The adult beetles tend to stay on the upper surface, while the larvae prefer on the lower surface of both eggplant and tomato leaves. In general, E. vigintioctopunctata devastated more on the eggplant than tomato leaves.
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Judul: Siklus Hidup dan Demografi Kumbang Lembing Henosepilachna vigintioctopunctata Fabricius (Coleoptera: Coccinellidae) Pada Tanaman Inang yang Berbeda
Abstrak: Phytophagous lady beetle Henosepilachna vigintioctopunctata Fabricius is a serious pest of solanaceous crops, such as eggplants and potatoes. The beetles distributes from sub temperate of Asia to the tropics of Indonesia. The beetle feeds on several species of agricultural plants as well as wild solanaceous plants. Their life cycle has been known in a certain species of plant, however none comparing both their life cycle and demography on different host plants. It has been well known that the species of insect responds physiologically different to the different of food plants. This research aimed to study the respons of H. vigintioctopunctata to the different of given food plants of S. torvum, S. nigrum, S. melongena, and Brugmansia suaveolens. Life cycle, demography, life table, and survivorship curve of the beetle were studied. Results showed that the longest time in life-cycle of H. vigintioctopunctata fed with S.nigrum (93,8 days, male and 104,1 days, female), respectively. The shortest time in life-cycle of H.vigintioctopunctata fed with S.melongena (16,5 days,male and 16,9 days, female), respectively. Highest number of eggs per egg mass occurred in H. vigintioctopunctata fed by S. nigrum (26,20 eggs per egg mass) and the lowest number occurred ini beetle fed by B. suaveolens (19,80 eggs per egg mass). Statistic demography of H.vigintioctopunctata showed that the highest value of gross reproductive rate was in S. torvum (5,5 individu) and the lowest value was in B. suaveolens (0,3 individu). The highest value of net reproductive Rrate was in S. torvum (2,11) and the lowest value was in B.suaveolens (0,02). The shortest of generation time was in S. melongena (5,9 days) and the longest of generation time was in S.nigrum (29,33 days). The higher value of intrinsic growth rate were in S.torvum (0,04) and S.nigrum (0,04), respectively and the lower value were in S. melongena (0,01) and B.suaveolens (0,01), respectively. Life-table analysis showed that the highest value of life expectation of egg and larval stages found on treatment with foliage of S. torvum. The highest value of mortality was found on S. nigrum (32,86%) and the lowest was found in S. melongena (16,67%). Based on value of its life-table, the most suitable host for development of H. vigintioctopunctata were S. torvum and S. nigrum. Survivorship curve of H. vigintioctopunctata showed that the highest number of mortality occurred in egg and larval stage.
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Judul: Perancangan Model Bisnis Property Syariah Segmen Bisnis Real Estat di PT WIKA Realty
Abstrak: PT Wijaya Karya Realty, perusahaan properti di Indonesia yang memiliki dua segmen bisnis utama, yaitu hotel dan non hotel. Arus pendapatan real estat (non hotel) sebesar 25,24% dari total penerimaan sementara asetnya mencapai 67,59% dari total. Sementara itu bisnis properti syariah, tumbuh eksponensial selama pandemi, dimana dimungkinkan jangkauan pasar yang luas dengan menyasar Masyarakat Berpenghasilan Rendah (MBR) ataupun Nazhir (pengelola aset wakaf). Sesuai Maqashid Sharia, dalam Islam bisnis tidak hanya berfokus pada keuntungan tetapi menebar kebaikan kepada umat, maka diperlukan model bisnis properti syariah untuk dikembangkan. Analisa yang digunakan yaitu Porter’s Five Force, Business Model Canvas dan Importance Perforance Analysis. Tujuh pakar dari PT WIKA Realty menilai tingkat kepuasan kinerja perusahaan dan hasilnya yaitu 78,7%. Tiga elemen perlu ditingkatkan seperti Customer Segment, Key Resources dan Customer Relationship, maka strategi prioritas yaitu (1) Menjadikan Business to Beneficiaries sebagai segmen market baru yang akan disasar oleh perusahaan, (2) Peningkatan kompetensi pegawai di bidang ekonomi dan bisnis syariah, (3) Membuat pakta integritas atas komitmen mewujudkan penerapan prinsip syariah pada PPU Realty Syariah, (4) Menjalin kerjasama dengan Lembaga Keuangan Syariah (LKS), lembaga kemanusiaan Islam serta mengoptimalkan Sukuk Wakaf sebagai mitra sumber pendanaan, (5) Membuat PPU Realty Syariah dan proyek properti syariah, dan (6) Penerapan aplikasi Customer Relationship Management.
Keyword: BMC, IPA, Porter’s Five Force, Property Syariah, Segmen Real Estat