Judul: Pengaruh Aplikasi Sistem Peresapan Biopori Terhadap Aliran Permukaan, Erosi, Kehilangan Hara Dan Produktivitas Tanaman Jagung (Zea mays) Dan Padi (Oryza sativa) Pada Tanah Latosol Darmaga
Abstrak: New technological innovations to reduce water and soil losses from agricultural land such as application of biopore absorbtion hole is very important. Reduction of water loss from agricultural land is required to maintain and improve soil fertility to support plant growth optimaly. This research purpose to study the effect of biopore absorbtion hole to reduce surface runoff, erosion, nutrient losses and increase productivity of corn (Zea mays) and upland rice (Oryza sativa). The research was design using randomized block design with soil conservation techniques as the treatment. The treatments consist of: no soil and water conservation techniques (T0), the conventional ditch (T1), conventional ditch and vertical mulch (T2), conventional ditch and biopore absorbtion holes (T3) and conventional ditch, vertical mulch and biopore absorbtion holes (T4). Measurement of surface runoff and soil erosion was conducted on soil erosion plot (10m x 2m). The parameters were observed included surface run-off, soil erosion, sediment deposited in the ditch, the content of C, N, P, K, Ca and Mg on the surface runoff and soil eosion which are deposited on ditch, and plant growth and productivity of corn and upland rice. The treatments of T1, T2, T3 and T4 are very effective in reducing surface runoff and soil erosion which is equal up to 100% compared with no treatment (T0). There treatment were also reduce nutrients losses in to ditch so that not loss from farmland. T4 treatment is able to precipitate nutrients to ditch more than the other on corn and upland rice season. The treatments T2, T3 and T4 significantly effect to dry weight of biomass and grain production of upland rice. The highest of biomass and grain upland rice production was found in the T4 treatment, respectively 7.20 ton/ha and 9.51 ton/ha. Effect of treatments and sediment return from ditch to planting bed were positive impact on production in the next planting season.
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Judul: Aplikasi Teknologi Sistem Peresapan Biopori Untuk Mencegah Aliran Permukaan Dan Erosi Serta Peningkatan Produksi Tanaman Pada Tanah Latosol Darmaga
Abstrak: Surface runoff and erosion are the main problem causing land degradation on sloping upland agriculture. Biopore infiltration system is one of water harvesting technology developed on arid region. The experiment aimed at studying the effect of biopore infiltration system to control surface runoff and erosion on sloping upland. The research was conducted in Cikabayan experimental farm, University Farm, Bogor, and in ITSL Laboratory, Faculty of Agriculture, Bogor Agricultural University. The Research was done from January 2009 until March 2010. The objective of this research to study the effectiveness of the biopori infiltration system in preventing damage to land by surface runoff and erosion, as well as in improving agricultural production on upland. Completely randomized block experimental design was used to analyze data collected from five treatments arranged randomly in three blocks as replications. Applied treatments were: control (T0); ridge terrace with contour channel according to the size of a width of 20 cm and 15 cm deep in intervals of 2 m (T1); T1 treatment combined with vertical mulching 4 tons of rice straw/ha (T2); T1 treatment combined with 2 infiltration hole in the contour channel at intervals of 1 m, diameter 8 cm and 100 deep, filled with rice straw (T3); and combinations of treatments T2 and T3 (T4). Research results indicated that each treatment very significantly prevents runoff and erosion for corn planting season and upland rice planting season compared to treatment T0. All treatments tends to increasing plant heigh of maize and upland rice except treatment of T2 at corn planting season to treatment T0. Treatment T2, T3, and T4 very significantly increase number of produvtive tillers compared to treatment T0. All treatments tends to increasing dry seed wight compared to T0 except treatment of T4 which is real increased dry seed wight. Treatment with vertical mulch (T2, T3, and T4) had higher seed wight if it is compared to treatment without vertical mulch (T1). All treatments very significantly increase dry rice grain wight if it is compared to T0. Treatment of T3 and T4 tends to produce higher rice grain if it compared to treatment of T1 and T2. Treatment with vertical mulch (T2, T3, and T4) very significantly increased the weight of dry straw if it is compared to treatment T0.
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Judul: Leukemia pada kucing
Abstrak: Leukemia pada kucing adalah suatu penyakit yang sangat patogen, disebabkan oleh sejenis virus. Virus ini dikenal sebagai Feline Leukemia Virus atau FeLV. FeLV ini oleh beberapa ahli dikatakan hanya bersifat ganas pada hewan kucing. Penularannya bisa secara horizontal maupun congenital. Kucing pada semua tingkat umur dapat terserang oleh FeLV ini. Khusus pada bentuk "thymic leukemia", virus ini hanya menyerang anak-anak kucing berumur diba- wah 1 tahun. Kucing-kucing liar atau yang tidak terpeli- hara jarang sekali terinfeksi FeLV. Selain dari serangan virus FeLV itu sendiri, maka penyakit leukemia ini bisa disebabkan oleh beberapa fak- tor yang sudah ada dalam tubuh hewan dan sangat menunjang perkembangan penyakit ini, yaitu antara lain tumor, agen toksik, cedera oleh kecelakaan dan gangguan hemopoiesis. FeLV menyerang sel-sel darah dalam tubuh hewan se- hingga pembentukan darah berjalan tidak normal. Terlihat sel-sel darah yang belum dewasa sudah beredar dalam sir- kulasi darah. Bentuk dan jumlahnya tidak lagi seimbang dalam tubuh hewan kucing tersebut. Gejala klinis antara lain kekurusan, ikterus, anemia, lemah, anoreksia, dyspnoe, sulit menelan, batuk, dan membran mukosa pucat. Selain itu kelenjar pertahanan tubuh juga membengkak, kemudian terjadi hepatomegali, spleenomegali dan pembengkakan pada ginjal. Terbentuk massa tumor pada beberapa tempat. Secara biopsy pada sumsum tulang akan terlihat be- berapa perubahan. Sumsum tulang berwarna merah tua atau abu-abu. Konsistensinya lunak dan terdapat banyak sekali memproduksi sel darah putih. Melalui gambaran darah leukemia ini lebih mudah didiagnosa. Jumlah retikulosit rendah sekali. PCV 8-15%, hemoglobin menurun, sel darah putih (WBC) meningkat, lim- fosit meningkat, Alfaglobulin juga ada peningkatan, dan banyak eosinofil yang belum dewasa beredar dalam darah…dst
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