Judul: Uji karakteristik water absorbent pati singkong serta pengaruhnya terhadap tanaman cabai pada tanah bertekstur pasir
Abstrak: Tin mine tailing in Bangka Belitung island covers significantly large area. Unfortunately, this tailing contain very high sand (>90%) but very low clay (<5%) and very low organic matter (<1%), that is has very low water retention ability. Common effort to overcome low water retention problem is by using intensive irigation. However, intensive use of irigation tends to be inefficient. To reduce the intensity of irigation, the use of water absorbent is presently began widely introduced, one of them is SWA (Super Water Absorbent) Cassava Starch. A study to examine the characteristics of SWA Cassava Starch and observe its effect to chilli plants in sand-textured soils was conducted in a greenhouse. The study consisted of two series of experiments. First, evaluation of SWA Cassava Starch (in swelling condition) degradability based on the decrease in the weight of SWA (swelling) toward the time. Second, evaluation of the effect of water absorbent on chili plant growth using Completely Randomized Design with three treatment factors namely (1) Water absorbent consisting of 8 standard; (2) sand soil consisting of 2 standard, and (3) Watering consisting of 2 standard. SWA Cassava Starch in applied in wet method before which SWA is soaked in water until it reaches equilibrium. Result of the experiments showed that SWA Cassava Starch (in swelling condition) degradability tend to be the same on the Regosol soil or sand tailings simulation soil. Second experiment indicated that in general water absorbent had no significant effect on chili plants growth, eventhough SWA Cassava Starch treatment with a dose of 0.1 g/kg in combination with chitosan tends to give a better effect. Chili plants growth at “a without watering treatment” with SWA treatment have a shorter life cycle compared to “once a week watering treatment”.
Keyword: Bogor Agricultural University (IPB), sand soil, chili plants, SWA cassava starch

Judul: Pendugaan kehilangan air melalui perhitungan neraca air serta analisis pertumbuhan tanaman kentang (Solanum tuberosum L.)
Abstrak: The growth and the production of a plant are determined by favourable environment. Soil is water reservoir and planting area for which the capability to keep the water in the soil will determine the total water that can be used for the plant. Water availability in the soil is used by the plant to fullfil plant’s water requirement such actual evapotranspiration and runoff which can be calculated by using the water balance. The objective of this research is to calculate the potato water loss during the measurement through the water balance and to analyse the effect on potato growth. The result of this research shows that the potato water loss (actual evapotranspiration and runoff) during measurement on 37 days until 73 days after planting is 148-191 mm or 4.6 mm/days, whereas the run off is 28-59 mm or 19-30 % from total water loss potato. The relations between soil water content and the growth rate in each treatment has a different disposed. When the storage of soil water content is high, the growth rate is uncertainly high, and vice versa. The growth rate is of the potato in this research not only influenced by soil water content, but also influenced by other factors that are not observed in this research.
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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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