Judul: Hubungan Rehabilitasi Lahan Dengan Hasil Air (Studi Kasus Di Blok S Cipendawa, Desa Megamendung, Kecamatan Megamendung, Kabupaten Bogor, Propinsi Jawa Barat)
Abstrak: Spring at Blok S Cipendawa was dry since 1998, and it appearing back in 2003 after land was planted by teak, mengkudu, mahagoni, african wood, bamboo, and also cover crops which grow up naturally, as an effort of scrub grass land rehabilitation. To learn more about the causes and process of appearing back of the spring necessaries the research on land rehabilitation and water yield relationship (springs) in the location. This research had been carried out at Blok S Cipendawa, Megamendung village, Megamendung district, regency of Bogor, west Java. The data was collected in January – May 2008. The tools used were GPS Garmin 60 CS; ombrometer; infiltrometer; soil rings, ArcView 3.3 GIS extension AVSWAT 2000; contour digital map; tally sheet; stopwatch; pail, oven; Tank Model – GA Optimizer; and local annual rainfall data year 1998 – 2007. The research objects were water catchment area with land cover, spring‟s discharge and soil. Simple linier regression analysis shows strong correlation between spring discharge and rainfall with coefficient of correlation is 0.67. Analysis of Tank Model resulted 76.11% of spring‟s discharge derive from intermediate flow. According to those data, the spring at Blok S Cipendawa is a spring derives from small (shallow) aquifer. Re-appearing of spring at Blok S is caused by increasing of soil‟s infiltration rate over the land which is converted from scrub grass with infiltration rate of 17.65 mm/hour into mixed vegetation with infiltration rate of 70.96 mm/hour, as well as into teak & mengkudu vegetated land with infiltration rate of 139.16 mm/hour. The increasing of infiltration rate is caused by soil properties improvement; organic matter content from 3.03%; porosity 48.4%; field capacity 49.44%, to be (respectively at mixed vegetation and teak & mengkudu) 4.79% and 3.59%; 56.19% and 50.19%; 49.44% and 52.12%. The improvement of those soil properties is the effect of vegetation which produced much more litter, so that has increased soil‟s organic matter content, porosity and field capacity. On the other hand, land terracing reduced slope length and hold water then reducing run-off velocity and enable to absorb water into soil. Using manure has also enriched soil‟s organic matter content. Rehabilitation of scrub-grass land by planting trees, bamboo, and followed also by cover crops which grew up naturally, land terracing and using manure into soil has increased infiltration rate. As infiltration rate increased, groundwater discharge will increase as well, where reaching soil surface will appear as spring which flows along year. Key words: land rehabilitation, infiltration rate, soil properties, groundwater, spring.
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Judul: Effect of Groundwater Exploitation for Irrigation Purposes to the Condition of Groundwater, Soil and Farmer's Income
Abstrak: Lahan sawah tadah hujan umumnya masih mempunyai tingkat produktivitas dan intensitas tanam yang rendah, akan tetapi potensi sumberdaya lahan dan peluang untuk peningkatan produksi cukup besar. Peningkatan produktivitas, intensitas dan diversitas tanaman pada lahan sawah tadah hujan telah dilaksanakan melalui sistem irigasi air tanah, namun hasilnya belum optimal, di lain pihak pengambilan air tanah diperkirakan menimbulkan dampak merugikan pada lingkung_an, dan eksternalitas pada masyarakat. Tujuan penelitian adalah ; 1) Mengkaji pengaruh pengambilan air tanah untuk irigasi terhadap perubahan kualitas dan kuantitas sumberdaya air tanah, serta perubahan kualitas tanah, 2) Mengkaji pengaruh pengembangan irigasi air tanah terhadap peningkatan produksi pertanian dan pendapatn petani, dan 3) Mengevaluasi pelaksanaan pengelolaan irigasi air tanah, serta membuat rekomendasi pengelolaan irigasi air tanah yang optimum. Penelitian dilaksanakan di Kecamatan Campaka, Kabupaten Purwakarta, Propinsi Jawa Barat. Penelitian dilakukan terhadap lima dari 16 sumur air tanah di Campaka yaitu TW-46 (Campaka Sari), TW-52 (Cibatu), TW-110 (Benteng), TW-79 dan SDPW-03 (Cijunti). Pemompaan air tanah menyebabkan perubahan kualitas dan kuantitas aliran air tanah dalam akuifer, hal ini juga mempengaruhi kepada kualitas air tanah. Hasil penelitian terhadap kualitas air tanah adalah sebagai berikut; 1) Semakin lama uml!.r sumur air tanah, kemasaman meningkat, saat awal pH berkisar antara 7,20 sampai 8,10, dan pada saat penelitian menjadi antara 6,20 sampai 7,20. 2) Kandungan kalium dan klorida cenderung menurun, saat awal kandungan kalium dan klorida tinggi, kemudian terjadi penurunan menjadi 0,041 mg/I untuk kalium dan antara 1,5 sampai 2,5 mg/I untuk klorida. 3) Terjadi peningkatan kandungan magnesium, natrium dan besi yang berasal dari pelarutan batuan di dalam akuifer dan aliran air tanah. 4) Perbedaan lokasi sumur air tanah tidak menyebabkan perbedaan kualitas air tanah, karena berada pada satu akuifer atau akuifer yang saling berhubungan, dan tidak ada pengaruh pengembangan irigasi air tanah terhadap kualitas air sumur penduduk. Perubahan k_uantitas air tanah terjadi apabila pengambilan air tanah dari akuifer melebihi kapasitas pengimbuhannya, disamping terjadinya perubahan tataguna lahan di daerah resapan air tanah. Dengan asumsi pengambilan air tanah setiap hari selama 10 jam, dan kapasitas pompa air tanah adalah 10 1/det untuk sumur menengah dan 20 1/det untuk sumur dalam, ternyata dengan pemompaan lebih dari 80 hari per tahun telah berada diatas kemampuan pengimbuhan., resources and farm technology availability. Various efforts to increase crop productivity, cropping intensity and crops diversity have already been done in some rainfed area; one of them is the development of ground water irrigation system. Since the most of people in rainfed area are poor farmers, and their income is mostly generated from agricultural activity, the development of ground water irrigation in this area plays an important role for the acceleration of agricultural development and poverty alleviation. However, an over exploitation of ground water for irrigation purposes might have risen some negative impacts to the environment and externalities to the people life. This research aims to observe the impact of ground water development for irrigation purposes in Campaka Sub-district, Purwakarta District of West Java Province. Results of the research conclude that ground water irrigation development rise some effects as follows; 1) increasing of water acidity, magnesium, sodium and iron contents, decreasing of chloride and
Keyword: Irrigation, Groundwater, Soil, Farmer's income

Judul: Infeksi Virus Parainfluenza Pada Anjing
Abstrak: Virus parainfluenza anjing termasuk famili Paramyxoviridae, berbentuk pleomorf dengan ukuran bervariasi (bergaris tengah antara 100-500 nm), berpembungkus peka ether, berisi genom RNA dan secara serologis mempunyai kesamaan dengan virus SV-5 kera; dikenak sebagai salah satu kausa penting dari sindrom "kennel cough". Infeksinya dapat mengenai anjing semua umur yang belum pernah terinfeksi atau mendapatkan vaksinasi mengakibatkan gejala klinis ringan yang terbatas pada traktus respirasi atu infeksi yang secara klinis tidak memperlihatkan gejala nyata. Gejala klinis yang nampak setelah masa inkubasi (1-5 hari) terlewati berupa batuk yang tidak berat selama beberapa hari, berbagai tingkat tonsilitis dan pharyngitis dan kadang-kadang ditemukan kenaikan temperatur rektal antara 1-2 derajat C dari temperatur normal rat-rata. Anjing terinfeksi mengandung virus pada traktus respirasi bagian atas dan bawah serta limfonoduli sampai hari ke 9 setelah infeksi. Penyebaran virus antar anjing terjadi secara aerogen.
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