Judul: Pengaruh Bahan Penahan Air Aquasorb Terhadap Pertumbuhan Jati
Abstrak: Introduction. Teak (Tectona grandis Linn.f) is one of the tree species which is widely cultivated in Java. In large scale teak plantation forest development, climate is one of the important factor influencing the success of planting. Tight schedule of planting and erratic weather condition constitute the constraint for achieving successful planting. One alternative for overcoming the constraint is by planting outside the rainy season. Planting outside the rainy season when the water supply is very limited, assisted by the use of aquasorb, has not been known, in terms of its success rate. The use of aquasorb for planting forestry planting stocks, particularly that of teak, has never been practiced in Indonesia. Therefore, there is a need for research to learn the extent that aquasorb effect could improve the survival percentage of teak planting stocks when they are planted outside the rainy season. Materials and method. The research was conducted from May 2008 through Agustus 2008, in the green house of Faculty of Forestry (IPB). The research consisted of three series of experiments. The experimental designs used were Block Randomized Design for Experiment 1, Factorial Completely Randomized Design for Experiment 2, and Completely Randomized Design for Experiment 3. In Experiment 1, there were 5 treatments with 3 replications, and each replication consisted of 4 planting stocks, so there were 60 experimental units. In Experiment 2, there were 2 factors, namely factors of leaf and aquasorb. Altogether, in Experiment 2, there were 16 treatments, and each treatment combination consisted of 3 replications. Each replication consisted of 3 planting stocks, so that altogether, there were 144 experimental units. In Experiment 3, there were 5 treatments with 3 replications, and each replication consisted of 3 planting stocks, so that altogether there were 45 experimental units. The observed variables were among other things, survival percentage; duration for reaching initial, intermediate and final wilting; percent of dry leaves, and percent of leaf shedding. Analysis of Variance was performed by using program of Minitab 14 and SAS for Duncan advanced test. Results and Conclusion. Results of Experiment 1 showed that the use of aquasorb with concentration of 600 ml, had the highest average of survival percentage (41.67 %) at 4 weeks after planting (WAP) as compared with control. In Experiment 2, application of aquasorb with concentration of 400 ml, accompanied with leaf cutting (reduction) by 70 % could increase the survival percentage of teak planting stocks, up to 100 %, and reduced the dry leaf percent to 54.91 % as compared with control. Leaf reduction by 70 and 90 % and the use of Aquasorb of 400 ml could prolong the duration to reach final wilting, up to 15 – 16 days. Results of Experiment 3 showed that application of aquasorb with different type, at the same concentration, had significant effect up to 5 WAP, and did not have significant effect at 6 WAP. The use of aquasorb of type A at concentration of 400 ml, exhibited higher percent of survival (67 %) as compared with the use of aquasorb of type B. Conclusion from this research was that
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Judul: Pengaruh Lereng terhadap Karakteristik Tanah, Pertumbuhan dan Kadar Hara Daun Tanaman Jati (Tectona grandis L.f) di Sukamakmur, Kabupaten Bogor.
Abstrak: Jati (Tectona grandis L.f) adalah salah satu jenis tanaman penghasil kayu berkualitas tinggi. Peningkatan produksi tanaman jati dapat dilakukan dengan penanaman jati varietas unggul, salah satunya adalah jati varietas solomon. Produktivitas tanaman jati harus didukung dengan karakteristik tanah yang sesuai agar ketersediaan hara tanaman dapat tercukupi sehingga tanaman dapat tumbuh dengan optimal. Pada kondisi alami (tanpa perlakuan) tanaman di kebun jati Sukamakmur menunjukkan keragaman dalam pertumbuhannya. Dari berbagai faktor pembentuk tanah, karakteristik tanah dan ketersediaan hara tanaman salah satunya dipengaruhi oleh faktor topografi atau lereng. Tujuan penelitian ini adalah untuk mempelajari pengaruh lereng terhadap karakteristik tanah dan mempelajari pengaruh lereng serta karakteristik tanah terhadap pertumbuhan dan kadar hara daun tanaman jati. Pengambilan contoh tanah dilakukan pada lereng atas (LA), lereng tengah (LT), dan lereng bawah (LB) pada lahan tanaman jati umur 15 bulan dengan kemiringan lereng LA sebesar 35%, LT 28%, dan LB 8%. Contoh tanah diambil pada kedalaman 0-20 cm dan 20-40 cm dengan metode komposit. Parameter pertumbuhan tanaman jati juga diamati, diantaranya tinggi tanaman, diameter dan keliling tanaman setinggi mata kaki, serta diameter dan keliling tanaman setinggi dada sebanyak 40 sampel pada setiap lereng. Pengambilan contoh tanaman juga dilakukan di lereng atas, lereng tengah, dan lereng bawah pada daun kedua. Hasil penelitian menunjukkan tekstur tanah pada LA, LT, dan LB didominasi oleh klei, namun pada LA di kedalaman 0-20 cm dan LB di kedalaman 20-40 cm bertekstur klei berdebu. Secara umum LB memiliki pH yang tergolong agak masam, kejenuhan Al sangat rendah, P2O5 total sangat tinggi, Ca dan Mg dapat ditukarkan tinggi hingga sangat tinggi, serta kejenuhan basa yang sangat tinggi. LB berbeda dengan LA dan LT pada beberapa parameter yaitu pH LB lebih tinggi dibanding LA dan LT, P2O5 total LB lebih besar dibanding LT, Ca dapat ditukarkan LB lebih besar dari pada LA, dan kejenuhan basa LB lebih tinggi dibanding LT. Pertumbuhan tanaman jati pada LB lebih bagus dibandingkan pada LT dan LA dan hampir seluruh parameter pertumbuhan tanaman jati berbeda sangat nyata pada tiap-tiap lereng. Banyak faktor yang mempengaruhi pertumbuhan tanaman jati diantaranya adalah bahan induk, ketersediaan hara tanah, serta retensi dan ketersediaan air.
Keyword: karakteristik tanah, lereng, pertumbuhan dan kadar hara daun jati

Judul: Penyakit Infectious Bovine Rhinotracheitis Infectious Pustular Vulvovaginitis Pada Sapi
Abstrak: Penyakit Infectious Bovine Rhinotracheitis - Infectious Pustular Vulvovaginitis adalah penyakit menular pada sapi selain juga dapat menyerang kerbau, babi, kambing, rusa, antilope dan wild beest. agen penyebabnya adalah virus famili Hervesviridae type 1, mempunyai simetri icosahadral, berinti DNA dan berserabut ganda (double stranded) serta mempunyai nucleocaspid.
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