Judul: Dinamika Perubahan Penggunaan Lahan dan Kecukupan Usahatani di Kabupaten Subang
Abstrak: Subang regency is located adjacent to Jakarta on the north coast of West Java. This strategic location has positioned Subang for having an added value of easy access. Therefore, it is exposed to increasing regional growth and development. Approximately 11,250 ha of the area have been allocated in a spatial plan as industrial area. The allocation causes land alteration, primarily in agricultural fields. Considering its significant impact, land conversion needs to be controlled. This research aims to observe the patterns of agricultural land use change in Subang during 2007-2013, as well as to study factors affecting land conversion by using logistic regression and to identify farmer’s interest to maintain their agricultural land. Analysis of land use conversion in 2007-2013 indicates that mixed garden and built-up increased considerably. These rises consume other land use types, including plantations, rice fields, and dry land agriculture. Other land use types remained constant. Logistic regression analysis concluded that the change of agricultural fields to built-up was influenced by several factors, including soil type, spatial plan and distance to the capital city. While factors affecting the interests of farmers were net agricultural income, total production and landrent. The Markov Chain accuracy in predicting land use of 2013 in Subang regency as much as 96.4%. This method is fairly accurate in predicting the use of mangroves, ponds, and forests
Keyword: Subang, farming interest, markov chain, logistic regression, land use change

Judul: Analisis dampak alih fungsi lahan pertanian terhadap kemandirian pangan di Kabipaten Subang (studi kasus : Desa Belendung, Kecamatan Cibogo)
Abstrak: Increasing of population and economy growth in Indonesia, particularly in industrial sector, leads to the demand increasing of land. Whereas the land supply is not able to fulfill the demand. This caused the problem of decreasing in agricultural land, especially rice field which converted for public housing and industrial development. There was a fluctuative rate of land conversion in Subang district. In the periode of 2003-2012 the total rate of conversion was -0,57 percent or the average rate of conversion was -0,057 percent. There are the factors that affected land conversion on macro scale in Subang district such as public housing and number of industry. There are the factors that affected land convertion on micro scale in Subang district such as land area and farm revenue. Besides that, land price was significant affected of farmer decisions for selling or converting them land. Farmers total revenue have been decreased as to be as Rp 1.090.762/month. Besides farmer revenue, occurring of land conversion decreased rice production. Rice production lost by 231.241 ton or Rp 1.107.460.400.000. The simulation result of food reliance with assumption productivity and consumption rate are constant showed that rice production in Subang district can’t supply their needs on 2100 with the number of short coming is 2.773 ton. There was various aspect of policy implication which could overcome land conversion such as social aspects, economy aspects, and environmental aspects.
Keyword: Bogor Agricultural University, Subang District., Rice Production, Land Conversion, Food Reliance, Farmers’s Revenue

Judul: Pertahanan pada ikan terhadap infestasi ichthyophthirius multifiliis dengan tetrahymena pyriformis dan tetrahymena thermophila
Abstrak: Ichthyophthirius multifiliis adalah protozoa dari kelas Oligohymenophorea, ordo Hymenostomatida dan famili Ophryoglenidae. Protozoa ini sering menyerang ikan liar, ikan yang dibudidayakan dan ikan hias dalam akuarium. Bentuk dewasanya (trophozoit) tinggal dibawah kulit ikan yang menjadi inangnya. Mereka makan runtuhan sel dan mengelupaskan epithel. Angka mortalitas dapat mencapai 100% pada ikan yang dipelihara dalam akuarium. Penyakit ini telah dilaporkan dari semua benua. Banyak preparat kimia yang dapat dipakai untuk mengontrol parasit ini. Yang paling berhasil dari antara preparat-preparat kimia yang digunakan adalah malachite green dengan konsentrasi 0.25 ppm yang dibiarkan bekerja selama 1 jam. Namun ada masalah yang timbul dalam pengobatan, karena di dalam hampir setiap perairan terdapat parasit tersebut. Hal ini menyebabkan sewaktu-waktu atau secara kontinyu terjadi infestasi oleh parasit ini dalam populasi ikan. Untuk mengatasi masalah ini maka tindakan yang dianggap praktis dan efektif untuk mengontrol parasit ini adalah imunisasi. Disinipun timbul permasalahan pula. Karena Ichthyophthirius multifiliis adalah parasit obligat, maka sulit mengumpulkannya dalam jumlah yang cukup untuk pembu- atan vaksin. Maka dicari sumber lain untuk membuat vaksin terhadap parasit ini. Hasil penelitian menunjukan bahwa Tetrahymena pyriformis dan Tetrahymena thermophila dapat dipakai sebagai vaksin terhadap Ichthyophthirius multifiliis. Masalah yang timbul kemudian adalah bahwa perlindungan terhadap Ichthyophthirius multifiliis ternyata tergantung pada strain (galur) atau isolat dari kedua spesies Tetrahymena di atas yang digunakan. Sebagai pertahanan bentuk lain dari ikan selain imunitas dapat dikemukakan ketahanan non imunologis yang tergantung pada spesies ikan dan kenaikan kadar vitamin C didalam makanan.
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