Judul: Sistem Produksi Benih Gandum (Triticum Durum) Kelas Penjenis Di Inra, Maroko
Abstrak: Kegiatan magang ini bertujuan untuk melatih mahasiswa bekerja secara profesional di bidang pengadaan dan distribusi gandum dengan menerapkan dan menyesuaikan ilmu yang telah diperoleh di perguruan tinggi pada dunia nyata, mengadakan observasi dan analisis terhadap beberapa masalah yang ditemui di lapang dan mencoba untuk mencari alternatif pemecahan masalah dengan membandingkan pada ketentuan sistem produksi dan distribusi benih gandum, serta menumbuhkan sikap profesionalisme dan jiwa kewirausahaan dalam hidang perbenihan.
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Judul: Pengadaan benih jagung (produksi, pengolahan, dan pengujian) : studi kasus di PT Benih Prima, Ciawi Bogor dab di Pusat Pendidikan benih IPB, Leuwikopo, Darmaga, Bogor
Abstrak: Praktek Lapang ini bertujuan selain untuk memperoleh pengelaman lapang, juga untuk mempelajari teknik pengadaan benih jagung dimulai dari kegiatan produksi sampai benih siap ditanam/disalurkan kepada petani, serta untuk mempelajari pegelolaan perusahaan. Dalam proses pengadaan be- nih jagung mencakup tiga tahap kegiatan yaitu kegiatan produksi calon benih, pengolahan benih, dan pengujian mutu benih jagung. Kegiatan produksi calon benih jagung meliputi kegiatan pengolahan lahan, penanaman, pemupukan, pengairan, penyiangan, dan pengendalian hama dan penyakit serta pemungutan hasıl panen. Kegiatan pengolahan benih jagung meliputi pengeringan benih, pemipilan, pembersihan benih dari kotoran-kotoran fisik, pemilahan, memberi perlakuan tertentu, serta penge masan dan penyimpanan. Kegiatan pengujian mutu benih jagung meliputi pengukuran kadar air dan pengujian viabilitas benih yang terdiri dari pengujian daya berkecambah dan uji kekuatan tumbuh…dst
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Judul: Phylogeography and Species Limits in the Papuan White Snake (Micropechis ikaheka) (Reptilia: Serpentes: Elapidae)
Abstrak: Papua white snake, Micropechis ikaheka, has been distingushed into two subspecies M.i. ikaheka and M.i. fasciatus. However, due to lack of data on their morphology, distribution and ecology, both subspecies often ignored in scintific discussions and refers only byas , Micropechis ikaheka. This study was designed to document the differences between M.i. ikaheka and M.i fasciatus by using scales characteristics and reproductive organ or hemipenes. The study also examine, zoogeography, habitat, diet and cannibalism of both subspecies to better understanding the the ecology of one of the most venomous snakes in the world. This study consists of three topics with method and also different in the size samples, respectively. The first study is the histology and microtopography of the skin were studied using paraffin method and Scanning Electron Microscope (SEM). The second is the hemipenis were examined by following Myers and Cadle (2003), and Zaher and Prudente (2003). The third is the abdominal surgery was carried out to document diet type and the investigate phenomenon of cannibalism in the snake. Specimens for this study came from the collection from Museum Zoologicum Bogoriense (MZB) and Universitas Negeri Papua’s Laboratory (LZU). The research result also indicated that the markers of skin and hemipenis described the same structure and microornamentation in all M. ikaheka groups being compared. Based specimens examined morphological descriptions do not s support the further differentiation in Micropechis. In short, two markers that used in this study could not sufficiently indicate the differences in the level of species and subspecies of M. ikaheka. The study, however, were able to delineate zoogeography and skin color patterns, which fall into four groups: M. i. ikaheka; M. i. fasciatus. M. i. ssp. “intermediate”; and M. i. ssp “black”. This study also revealed that color variations did not overlap in their geographic distribution. It is therefore, it suggested that environmental factors may contribute to the skin color variations. It also assumed that habitat discontinuous and biogeography factors may also cause the loss of the connection between the original populations (vicarians) or follow colonization events (dispersal). The examined of 22 stomach contents of M. ikaheka shows this species is carnivorous, and prey on vertebrates such as amphibians, fish, reptiles, and Mammals. These snakes are opportunistic predators since they prey on all that can be captured, but mainly reptiles (61.5%), followed by mammals and fish (both 15.4%), and amphibians (7.7%). Although categorized as terrestrial animal, the diet study showed that M. ikaheka snakes often go into the water to hunt for fish (the sample from Yapen island), including eel (the sample from Aru island). Based on prey items indentified, there is evidence that M. ikaheka is cannibal. At this time, there still no record on reason for cannibalism, but it is assumed that cannibalism was due to competition between populations and means to control population.
Keyword: geographic variation, white snake, papua