Judul: Karakteristik Intersepsi Radiasi Matahari dan Produksi Tanaman Jagung Manis pada Arah Baris dan Kerapatan Berbeda
Abstrak: This study was conducted to determine the effect of row planting direction and plant population density on the change of specific leaf area (SLA), leaf area index (LAI), radiation use efficiency (RUE) and growth of sweet corn. The research was conducted from March to June 2013 in Cikabayan Research Station IPB Darmaga-Bogor, West Java, at altitude of ± 240 masl. The row planting direction was TB (East-West direction) and US (North-South direction). The planting spacing was J20 (70 x 20 cm) and J40 (70 x 40 cm). The meteorology factors being observed were the intensity of radiation, air temperature and humidity. Agronomic variables factors being observed were plant height, number of leaves, dry weight and yield component. The results showed the combination treatment of row direction and planting spacing did not significantly affect plant height, leaf number and total dry weight. However, the treatment has significant affect on dry plant at harvest. The interception of solar radiation in US treatment was 11% higher than the TB, while J20 treatment has 3% higher than J40. Radiation use eficiency of treatment TBJ20, TBJ40, USJ20, USJ40 were 2.97, 2.75, 3.16, and 3.14 g MJ-1 respectively. Dry seed yield of J20 was 5.98 ton ha-1, which was 20% greater than J40 population. Harvest index for TBJ20, TBJ40, USJ20 and USJ40 are 0.23, 0.19, 0.25 and 0.20.
Keyword: planting density, row direction, harvesting product, biomass production, radiation use efficiency, sweet corn

Judul: Morphophysiological Response and Tolerance
Levels of Various Sweet Corn Hybrids (Zea mays Saccharata) under Shade
Stress
Abstrak: Intensitas cahaya matahari memiliki pengaruh yang besar pada pertumbuhan tanaman. Tanaman jagung termasuk tanaman tipe C4 yang memiliki karakteristik sangat sensitif terhadap naungan. Penurunan luas lahan berdampak pada produktivitas jagung. Produksi tanaman dapat ditingkatkan dengan mengupayakan ekstensifikasi dengan cara membudidayakan tanaman secara optimal tanpa membuka lahan-lahan baru. Luas lahan pertanian dapat ditingkatkan dengan memanfaatkan areal di bawah tegakan. Namun terdapat kendala, yaitu cekaman naungan atau intensitas cahaya rendah. Peningkatan produktivitas jagung manis pada lahan marjinal seperti cekaman naungan salah satunya dapat dilakukan dengan penggunaan varietas unggul. Penelitian ini bertujuan untuk mengetahui dan memperoleh informasi tentang pertumbuhan, daya hasil, dan tingkat toleransi beberapa genotipe jagung manis pada cekaman naungan. Percobaan disusun dengan rancangan acak kelompok lengkap (RAKL) yang terdiri dari dua faktor, faktor pertama yaitu cahaya penuh dan naungan 50% sedangkan faktor kedua adalah 16 genotipe jagung manis. Data yang diamati meliputi analisis morfologi (tinggi tanaman, jumlah daun, diameter batang, panjang daun, dan lebar daun), analisis fisiologi (laju fotosintesis, laju transpirasi, konduktansi stomata, kerapatan stomata kerapatan trikoma, klorofil a daun, klorofil b daun, total klorofil daun, antosianin daun, karotenoid daun, klorofil a biiji, klorofil b biji, total klorofil biji, antosianin biji, dan karotenoid biji), analisis komponen hasil (bobot tongkol dengan kelobot, bobot tongkol tanpa kelobot, jumlah tongkol, panjang tongkol, diameter tongkol, dan PTT), dan indeks toleransi cekaman. Hasil penelitian menunjukkan bahwa genotipe jagung manis yang diuji menunjukkan respon yang berbeda terhadap naungan. Secara umum naungan 50% menurunkan produksi tongkol jagung manis secara nyata dengan rata-rata penurunan lebih dari 50% dibandingkan dengan kontrol. Semua varietas komersial yaitu G13 (Exsotic), G14 (Talenta), G15 (Paragon), dan G16 (Golden Boy) menunjukkan nilai STI yang relatif lebih tinggi. Genotipe hasil persilangan yang memiliki nilai STI tertinggi adalah G11 (SM7-8xSM12-2) dan G12 (SM11- 6xSM12-2). Kata kunci: cekaman naungan, jagung manis, intensitas cahaya rendah, toleran, The intensity of sunlight has a great influence on plant growth. Corn plants are C4-type plants which are very sensitive to shade. The decrease in land area has an impact on corn productivity. Plant production can be increased by seeking extensification by cultivating plants optimally without opening up new lands. The area of agricultural land can be increased by utilizing the area under stands. However, there are obstacles, namely shading stress or low light intensity. Using superior varieties can increase the productivity of sweet corn on marginal lands, such as shade stress. This study aims to identify and obtain information on several sweet corn genotypes' growth, yield, and tolerance levels under shade stress. The experiment was arranged in a completely randomized block design (RBD) which consisted of two factors, the first factor was full light and 50% shade, while the second factor was 16 genotypes of sweet corn. The observed data included morphological analysis (plant height, number of leaves, stem diameter, leaf length, and leaf width), physiological analysis (photosynthesis rate, transpiration rate, stomatal conductance, stomata density, trichome density, leaf chlorophyll a, leaf chlorophyll b, total leaf chlorophyll, leaf anthocyanins, leaf carotenoids, seed chlorophyll a, seed chlorophyll b, total seed chlorophyll, seed anthocyanins, and seed carotenoids), analysis of yield components (cob weight with husk, cob weight
Keyword: cekaman naungan, jagung manis, intensitas cahaya rendah, toleran

Judul: Distemper Pada Anjing
Abstrak: Distemper merupakan penyakit infeksius pada bimbingan anjing yang menduduki tempet teratas dan penyakit ini tersebar di seluruh bagian dunia dimana terdapat anjing-anjing yang dipelihara, terutama pada anjing-anjing muda di kota-kota besar, pada kelompok-kelompok anjing atau pada situasi lain dimana banyak terdapat kontak antara anjing. Penyakit ini disebabkan oleh virus yang termasuk dalam famili Paramyxoviridae dan genus Morbilivirus. Infeksi virus ini sering disertai oleh infeksi sekunder oleh kuman Staphylococcus, streptococcus, Brucella bronchiseptica dan kuman Salmonella, inilah yang kadang-kadang sebagai penyebab kematian.
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