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: Host acceptance and food efficiency by Epilachna vigintioctopunctata on several host plants
Abstrak: Epilachna vigintioctopunctata (Fabricius) (Coleoptera: Coccinellidae) is commonly known as hadda beetle. This insect is a phytophagous and causes a serious pest and built a tremendous damage to solanaceaeous crops. The suitability of a certain host plant could affect on feeding activity and digestibility of food that support insect growth and development. Recently, food acceptance and suitability on several varieties of host plants by E. vigintioctopunctata has not been reported in Indonesia. The objective of this research was to investigate the host acceptance and food efficiency by E. vigintioctopunctata on several host plants. Both larvae and adults bite on six species of leaves Solanum melongena, S. tuberosum, Lycopersicon esculentum, Physalis angulata, Cucumis sativus, and Cucurbita pepo. The larvae and adult beetles mostly fed on S. melongena with the areal leaf consumed 6.75 and 1.771 cm2/insect/day, followed by L. esculentum, 4.416 and 1.35 cm2/insect/day. The average rate of consumption on L. esculentum by early 4th instar larvae was 1.5 x 105 μg/insect/day higher than S. melongena was 1.0 x 105 μg/insect/day. On the other hand, the average growth rate and efficiency of conversion of digested food were 3723.7 μg/insect/day and 43.17% higher than in S. melongena than L. esculentum were 2984.8 μg/insect/day and 19.94% respectively. This beetle has low consumption but high efficiency of utilization food on S. melongena.
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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