Judul: Keanekaragaman Parasitoid Hymenoptera pada Tanaman Kelapa Sawit dengan Strata Umur yang Berbeda di Kabupaten Batanghari, Jambi
Abstrak: Serangga parasitoid merupakan salah satu agens hayati yang digunakan dalam melaksanakan pengendalian hama secara biologis. Umur tanaman berpengaruh terhadap kelimpahan serangga parasitoid Hymenoptera, tanaman muda memiliki komposisi parasitoid yang lebih kompleks dibandingkan tanaman tua. Penelitian ini bertujuan untuk menginformasikan keanekaragaman jenis serangga parasitoid Hymenoptera yang berada di tanaman kelapa sawit dan membandingkan keanekaragaman parasitoid pada umur yang berbeda. Penelitian ini dilakukan pada tanaman kelapa sawit dengan umur 2, 4, 6, dan 8 pada bulan April sampai November pada tahun 2015 di Kabupaten Batanghari. Pengambilan serangga dilakukan dengan cara koleksi langsung, perangkap kuning (yellow pan trap), dan malaise trap. Perangkap kuning diletakkan pada kanopi dan pangkal batang kelapa sawit dengan jumlah plot sebanyak 16 plot dalam satu plot terdapat 36 pohon kelapa sawit. Serangga yang telah dikoleksi kemudian dipelihara dan diidentifikasi hingga tingkat morfospesies di laboratorium. Hasil penelitian menunjukkan tanaman muda memiliki keanekaragaman parasitoid Hymenoptera lebih tinggi dibandingkan tanaman tua. Parasitoid yang dominan pada perkebunan kelapa sawit yaitu Aphelinidae, Diapriidae, Mymaridae, and Scelionidae. Hama yang ditemukan dari ordo Lepidoptera yaitu Lymantriidae, Limacodidae, Geometridae, dan Pshycidae.
Keyword: biological control, oil palm plantations, parasitic wasps

Judul: Keanekaragaman Hama dan Parasitoid pada Perkebunan Kelapa Sawit di Jambi
Abstrak: One of the most important ecosystem service is biological control since it provide natural control and prevents pest population build up. Biological control is quite widely practiced in various types of ecosystems, including in the oil palm plantations. One aspect that is important in the practice of biological control is parasitoid abundance and wealth, as natural enemies of pests of oil palm. The objective of this research was to study the diversity of pests and its parasitoids at various age levels in oil palm plantation. Field observations were conducted 4, 6, 8, and 10- years old of oil palm plantation in Jambi from February to April 2014. Insects were collected using direct observation and yellow pan trap (YPT). Traps were placed on the canopy and stem on 50x50 m plots (consisting of 36 palm trees). Pests that were collected from direct observation were reared and identified in the laboratory. Parasitoids which emerge from pests as well as from traps were all identified until morpho-species or species level. Overall, 525 individuals were collected. The most dominant pests found in the field was Lymantriidae. There was no correlation between pest abundance and age of oil palm. Nineteen species of parasitoids were found be associated with pests from the oil palm. The dominant parasitoids from the family Eulophidae and Braconidae. These parasitoids parasitized the dominant pest from Lymantriidae, Psychidae, and Limacodidae families with parasitization rate that varies from 1.61-14.29%. Pest populations affected by phenology and plant architecture cause movement and increased pest attack while parasitoid populations affected by the presence of flowering plants as food source of adult parasitoids.
Keyword: direct observation, habitat transformation, parasitoid, yellow pan trap

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