Judul: Pengujian formula pupuk NK Blend dan Super Nitro Potash (SNP) terhadap tanaman jagung (Zea mays L.) pada latosol Darmaga
Abstrak: The changes of land use from agricultural farm to the others utilizing pressed the number of agricultural area especially food plant. The decreasing of soil productivity as a consequence the decreace of soil element especially nitrogen and potassium aggravated the production and agricultural farm condition. To anticipate this condition, it is important to keep the the nutrient equilibrium in the soil in order to guarantee the growth and plant production. One of solution to keep to solve this problem is by using NK Blend and Super Nitro Potash (SNP) fertilizer. This research was aimed to test the formula of NK Blend and Super Nitro Potash (SNP) fertilizer concerning to the growth and maize crop production as well as to get the most effectiveness dosage which is able to result high production. The test plant used in this research was hybrid maize.
Keyword: 

Judul: Effect of NPK Compound Fertilizer on growth, Yield and Nutrient Uptake of Maize (Zea Mays. L) In Darmaga’s Latosol
Abstrak: Saat ini aktivitas pertanian sangat tergantung pada pupuk dan pemupukan khususnya pada 20 tahun terakhir. Hal ini disebabkan tanah-tanah pertanian di Indonesia memiliki tingkat kesuburan tanah relatif rendah sehingga kurang mampu mendukung pertumbuhan tanaman. Pemupukan merupakan cara terpenting dalam mendorong pertumbuhan tanaman yang lebih baik. Penelitian ini bertujuan membandingkan pengaruh pemberian pupuk majemuk dan pupuk konvensional terhadap pertumbuhan, produksi, dan serapan hara tanaman jagung pada Latosol Darmaga. Pupuk majemuk bermerk “Big Growth” (15:15:10) (yang selanjutnya disingkat BG) dibandingkan dengan pupuk konvensional yaitu Urea, SP 36 Dan KCl. Percobaan dilakukan di kebun percobaan Cikabayan, Darmaga, Bogor. Analisis tanah dan jaringan tanaman dilakukan di Laboratorium Kimia dan Kesuburan Tanah, Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, Institut Pertanian Bogor. Rancangan Kelompok Lengkap Teracak (RAK) dengan 6 perlakuan dan 3 ulangan diterapkan pada percobaan ini. Perlakuan yang diberiakan adalah: (1) Kontrol (2) Standar (3) BG 0.5 (4) BG 1.0 (5) BG 1.5 (6) BG 2.0 yang masing-masing setara dengan 0.5; 1; 1.5; dan 2 kali dosis standar. Hasil percobaan menunjukan bahwa perlakuan Standar dan BG nyata meningkatkan tinggi tanaman, bobot tongkol per petak, bobot tongkol contoh dan bobot pipilan jagung per petak dibandingkan perlakuan Kontrol. Perlakuan BG mempunyai pengaruh yang tidak berbeda nyata pada serapan hara N dan K dibandingkan standar. Bobot tongkol per petak pada perlakuan BG 0.5 relatif sama dengan Standar namun untuk bobot pipilan per petak cenderung lebih tinggi dari Standar meskipun secara statistik tidak berbeda nyata. Disamping hal tersebut perlakuan BG menimbulkan pengaruh residu pada kadar P tersedia dan K dapat ditukar yang cenderung meningkat setelah percobaan.
Keyword: 

Judul: Posisi Filogenetik Kura-Kura Carettochelys Insculpta  (Reptillia: Testudinata)
Abstrak: Carettochelys insculpta is an endemic freshwater turtle of southern Papua and northern Australia. Phylogenetic position of this turtle is remain unresolved until now. Most of the research conducted show close relationships of C. insculpta and members of Trionychidae family. However, some of the research show distance between C. insculpta and members of Trionychidae family. This research is conducted to analyze phylogenetic relationship between C. insculpta and other members of Testudinata using 12S rRNA, 16S rRNA, and both gene as markers. DNA samples were obtained from three different organisms of C. insculpta. Two species used as outgroups were Alligator mississippiensis and Iguana iguana. Phylogenetic analysis was carried out using Neighbor-Joining method with Felsenstein 1981 (F81) modeltest. A polytomy tree of Testudinata was produced by using 12S rRNA gene. However, analysis using 16S rRNA and both genes as markers confirmed that C. insculpta was located between the Chelonidae and the Trionychidae family.
Keyword: