Judul: Evaluasi Keragaan Karakter Dua Lanras Kacang Bogor (Vigna subterranea (L.) Verdcourt) pada Dua Lingkungan Tumbuh Berbeda.
Abstrak: Bambara is legume carbohydrate source which can be developed into new crop. The objective of this experiment was to evaluate the characters of two landraces bambara groundnut in two different growing environments. The two landraces were obtained from farmers in Sumedang and Sukabumi. The experiments were conducted at Leuwikopo, IPB Darmaga, from June - October 2010. Each plant used as a unit of observation. Each landraces is planted on two environment with different fertilizer dosage, thus forming four different populations. The characters observed were width of canopy, stem length, number of branches, number of nodes, internode length, number of pods, weight of fresh pods/plant and weight of dry pods/plant. Result showed Sumedang landraces in the marginal environment has the potential to be developed based on width of canopy, number of branches, number of node, weight of fresh pods, and weight of dry pods. In Sukabumi landrace, crops in marginal environment has the potential to be developed based on number of pods and crops in optimal environment has the potential to be developed based on petiol length character and internodes length. Result of correlation analysis between the characters, the vegetative characters which consistent positively correlated with the crop yield are the width of canopy and number of nodes.
Keyword: canopy width, correlation, marginal, sukabumi, sumedang

Judul: Evaluasi keragaan karakter dua lanras kacang bogor (Vigna subterranea (L.) Verdcourt) pada dua lingkungan tumbuh berbeda
Abstrak: Kacang bogor merupakan legume sumber karbohidrat yang dapat dikembangkan menjadi tanaman pangan baru. Penelitian ini bertujuan untuk mengevaluasi keragaan karakter dua lanras kacang bogor yang ditanam pada dua lingkungan tumbuh berbeda. Kedua lanras tersebut didapatkan dari petani yang ada di Sumedang dan Sukabumi. Penelitian dilaksanakan di Kebun Percobaan Leuwikopo Kampus IPB Darmaga dari bulan Juni hingga Oktober 2010. Setiap tanaman dijadikan satu satuan amatan. Setiap lanras ditanam pada dua lingkungan dengan dosis pemupukan berbeda, sehingga terbentuk empat populasi berbeda. Karakter yang diamati meliputi lebar kanopi, panjang tangkai, jumlah cabang, jumlal buku, panjang ruas, jumlah polong per tanaman, bobot polong basah per tanaman dan bobot polong kering per tanaman. Hasil uji nilai tengah menunjukkan bahwa lanras Sumedang di lingkungan marjinal memiliki potensi untuk dikembangkan berdasarkan karakter lebar kanopi, jumlah cabang, jumlah buku, bobot polong basah dan bobot polong kering. Pada lanras Sukabumi, tanaman pada lingkungan marjinal memiliki potensi untuk dikembangkan berdasarkan karakter jumlah polong dan tanaman pada lingkungan optimal memiliki potensi untuk dikembangkan berdasarkan karakter panjang tangkai daun dan panjang ruas. Hasil analisis korelasi antar karakter, menunjukkan bahwa karakter vegetatif yang konsisten berkorelasi positif dengan hasil adalah lebar kanop dan jumlah buku.
Keyword: Canopy width, Correlation, Marginal, Sukabumi, Sumedang

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4