Judul: Management of Plant Pest Organisms in the Hydroponic Cultivation System at PT Lumina Agro Madania Bogor
Abstrak: Hidroponik sebagai sistem budi daya pertanian modern dapat menjadi alternatif cara bercocok tanam yang cukup ideal. Namun, terlepas dari berbagai keunggulan yang dimilikinya, hidroponik juga masih tidak luput dari serangan OPT, begitupun yang terjadi di PT Lumina Agro Madania. Penelitian ini bertujuan mempelajari sistem budi daya, gangguan, dan cara pengelolaan OPT di PT Lumina Agro Madania Bogor. Data lapang diperoleh dengan melakukan skoring penyakit dan memasang yellow-sticky trap di 2 petak rumah kaca yang ditanami selada Green romaine dan Lollorossa. Setiap petak diambil 20 tanaman contoh per varietas secara acak sistematis dengan 5 interval. Pengamatan lapang meliputi: aspek budi daya, keragaman jenis serangga, insidensi dan severitas penyakit, serta cara pengelolaan OPT. Sedangkan, pengujian laboratorium meliputi: menguji sampel benih dengan teknik blotter test, mengisolasi dan melakukan karakterisasi cendawan patogen dari daun bergejala, dan mengidentifikasi OPT. Data-data yang diperoleh ditabulasi dengan Microsoft Office Excel 2013 dan dianalisis secara deskriptif. Data tingkat infeksi cendawan benih dianalisis ragam menggunakan SAS 9.0 dengan uji lanjut Tukey pada α=0.05. Hasil pengamatan menunjukkan tanaman terserang penyakit bercak daun Cercospora longissima dengan tingkat insidensi 100% dan severitas ≥ 25%. Keragaman jenis serangga yang pada hasil trap didominasi oleh ordo Diptera, diikuti ordo Coleoptera, Hemiptera, dan Hymenoptera. Hasil pengujian benih dan isolasi daun bergejala menunjukkan keragaman morfologi karakter cendawan yang cukup beragam. Pengelolaan OPT yang dilakukan oleh perusahaan menggunakan yellow-bottle trap dan pestisida nabati komersial., Hydroponics is a modern agricultural cultivation system that can be an ideal alternative way of farming. However, apart from the various advantages it offers, hydroponics can still be attacked by pests and disease, as happened at PT Lumina Agro Madania. This study aims to study the cultivation system, disturbance, and how to manage the pest and disease in PT Lumina Agro Madania Bogor. Field data was obtained by scoring the disease and installing yellow-sticky traps on 2 greenhouse plots planted with Green romaine and Lollorossa lettuce. For each plot, 20 sample plants per variety were taken systematically randomly with 5 intervals. Field observations include aspects of cultivation, diversity of insects, disease incidence and severity, as well as pest and disease management methods. Meanwhile, laboratory tests include tested seed samples using the blotter test technique, isolated and characterized pathogenic fungi from symptomatic leaves, and identified pests and diseases. The data obtained were tabulated with Microsoft Office Excel 2013 software and analyzed descriptively. The fungal infection rate data obtained from the blotter test were analyzed for variance using the SAS 9.0 program with Tukey's further test at α=0.05. The results showed that the plant was attacked by Cercospora longissima leaf spot disease with an incidence rate of 100% and a severity of ≥ 25%. The diversity of insect species in the trap results was dominated by the Diptera order, followed by the Coleoptera, Hemiptera, and Hymenoptera orders. The results of seed testing and symptomatic leaf isolation showed quite diverse morphological characteristics of the fungi. The pest and disease management carried out by the company uses yellow-bottle traps and commercial botanical pesticides.
Keyword: greenhouse, horticulture, IPM (integrated pest management), pest and disease, sticky trap

Judul: Preparation of Integrated Pest Management Design on Organic Farming Land at Rosy's Veggies Farm Sukabumi
Abstrak: Pertanian organik merupakan salah satu cara budidaya yang dapat mendukung pelestarian lingkungan dan tidak terlepas dari serangan hama. Pengendalian hama terpadu merupakan salah satu upaya untuk mengatasi hama yang menyerang pertanian organik. Rosy's Veggies Farm merupakan salah satu pertanian organik yang belum sepenuhnya menerapkan prinsip pengendalian hama terpadu dalam memantau dan mengendalikan hama. Kegiatan ini bertujuan mengembangkan desain pengendalian hama terpadu yang sesuai dengan pertanian organik di Rosy's Veggies Farm Sukabumi.Kegiatan ini meliputi pemantauan serangga menggunakan 3 jenis perangkap yaitu yellow sticky trap, pitfall trap dan light trap, pengamatan tanaman bergejala pada tanaman brokoli, buncis, dan sawi pahit, dan pengembangan desain pengendalian hama terpadu yang spesifik. Dari hasil perangkap, hama banyak ditemukan pada yellow sticky trap. Hama utama pada brokoli adalah Crocidolomia pavonana dan Myzus persicae, hama pada sawi pahit adalah Bradybaena similaris, Phyllotreta striolata dan Crocidolomia pavonana, hama pada buncis adalah Liriomyza sp. dan Henosepilachna sp. Berdasarkan hasil pengamatan, wawancara dan keterlibatan langsung dalam proses pengendalian hama, maka dapat diusulkan rancangan yang mengikuti pengendalianhama terpadu yaitu pemanfaatan PGPR, musuh alami, agens hayati, pestida nabati, tumpang sari dan biofumigasi., Organic farming has been championed as an environmental friendly farming methods and is align with conservation issues, however, the crops are still not immune from pest attacks. Integrated pest management is one of the efforts to overcome pests that attack organic farming. Rosy's Veggies Farm, an organic farm in Sukabumi, Jawa Barat has not fully implemented the principle of integrated pest management in their pest monitoring and pest management practices. This activity aimsto develop an integrated pest control design that issuitable for organic farming at Rosy's Veggies Farm Sukabumi. This activity includes insect monitoring using 3 types of traps, yellow sticky trap, pitfall trap and light trap, observation of symptomatic plants in broccoli, chickpea and bitter mustard plants, and development of specific integrated pest management designs. From the trap results, many pests were found in the yellow sticky trap. The main pests on broccoli were Crocidolomia pavonana and Myzus persicae, pests on bitter mustard were Bradybaena similaris, Phyllotreta striolata and Crocidolomia pavonana, pests on chickpeas were Liriomyza sp. and Henosepilachna sp. Based on the results of observations, interviews and direct involvement in the pest management process, a design that follows integrated pest control can be proposed, use of PGPR, natural enemies, biological agents, vegetable pesticides, intercropping and biofumigation.
Keyword: Insect monitoring, integrated pest control, organic farming

Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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