Judul: Pengaruh Pemberian Asam Humat Sebagai Bahan Amelioran Tanah Terhadap Pertumbuhan Dan Serapan Timbal Tanaman Bayam (Amaranthus sp.) Pada Tanah Yang Tercemar Logam Berat Timbal (Pb)
Abstrak: The large area of peat soil in Indonesia has potensial for agricultural sector development. Humic substances from the peat is very useful because the compound has significant role in affecting soil properties. This role was controlled by humic fraction such as humic acid which has the ability to improve soil fertility and quality due to high Cation Exchange Capacity and its capability to fix certain heavy mctal that toxic for human and plant.
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Judul: Perbaikan lahan bekas tambang pasir besi dengan aplikasi bahan humat dan kapur untuk tanaman semangka (Citrullus vulgaris scard)
Abstrak: Activities in iron sand mining affects the degradation of physical and chemical properties of soils. Several soil problems of ex-mined land of iron sand mining are low nutrient availability, low available soil water, high soil temperature, porous structure and uneven topography. Improvement of the such soil needs application of appropriate soil ameliorants such as humic substance and lime. It has been known that humic substance can be obtained by extracting organic matter, therefore, application of that material may improve the chemical, physical, dan biological properties of soil. The purpose of this research is to examine the effect of humic substance and lime application on ex-mined land of iron sand mining on soil characteristics, growth, and production of watermelon. The research was conducted in ex-mined land of iron sand quarry of PT. Antam (Aneka Tambang) at Patutrejo, Grabag village, Purworejo, Central Java from March 2010 until March 2011. The field research used Split Plot of Complitely Randomized Design consisted of two factors: Humic substance (H0: 0; H1: 7.5; H2:15; and H3: 22.5 L/Ha) and Lime (K: 0 and K1:100 kg/Ha) with three replications. The parameters of growth and production (shoots length, leaf number, segment number, male flowers number and fruit weight) were measured to determine the effect of the treatments. The chemical properties of soils were analyzed for monitoring the soil properties changes. The results showed that humic substance and lime application increased the availability of P, K, Ca, and Mg. Humic substance has carboxil and fenolic clusters those have capability to bound Al and Fe ions from soil solution for forming low solubility of complex compounds. Therefore, the concentration of free Al and Fe ions in the solution will decrease causing the available of phosphate increase. Humic substance increased the shoot length, leaf number, male flowers number, and the segment number. The application of humic substance as much as 22.5 L/Ha increase the watermelon production by 28% from 6.15 ton/Ha at K0H0 to 7.88 ton/Ha at K0H3 treatment. Leaf spot disease, soft rot, and pest snails affected growth and yield of watermelon.
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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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