Judul: Pengaruh media tanam dan pupuk daun terhadap pertumbuhan dan perkembangan tanaman hias "aglanema var. donna carmen"
Abstrak: Penelitian ini menggunakan rancangan perlakuan faktorial disusun dalam rancangan lingkungan acak kelompok. Perlakuan yang diberikan berupa komposisi media tanam (M) dan konsentrasi pupuk daun (P). Perlakuan media tanam (M) menggunakan empat taraf perlakuan yaitu perbandingan tanah : bahan organik : pasir 3 : 3 : 2 (v/v/v), bahan organik tersebut adalah kompos (M1), lasting (M2), pukan ayam (M3) dan serbuk kelapa (M4).
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Judul: Pengaruh jenis pupuk organik terhadap pertumbuhan beberapa jenis tanaman hias dalam pot
Abstrak: Penelitian ini bertujuan untuk mempelajari pengaruh pemberian beberapa jenis pupuk organik (Agro King 2000, Algafer LPF Plus, dan Supermes) terhadap pertumbuhan beberapa jenis tanaman hias dalam pot (melati, bogenfil, dan gardenia). Penelitian dilaksanakan di rumah plastik kebun citra Cipaku, Palasari, Cijeruk, Bogor yang terletak pada ke- tinggian ± 425 m di atas permukaan laut, dimulai pada bulan November 1993 sampai dengan Februari 1994. Bahan tanaman yang digunakan yaitu melati asal cang- kok, bogenfil asal stek batang, dan gardenia asal stek batang. Jenis pupuk organik yang digunakan yaitu Agro King 2000, Algafer LPF Plus, dan Supermes. Rancangan percobaan yang digunakan yaitu Rancangan Acak Kelompok dengan satu faktor yaitu jenis pupuk orga- nik, yang terdiri dari Agro King 2000 (P1), Algafer LPF Plus (P2), dan Supermes (P3). Sebagai kontrol (PO) digu- nakan media dan tanaman yang sama hanya tanpa perlakuan pupuk organik cair. Setiap perlakuan pada satu tanaman diulang tiga kali sehingga penelitian ini terdiri dari 12 satuan percobaan untuk satu jenis tanaman. Peubah yang diamati meliputi saat muncul tunas perta- ma, pertambahan panjang cabang, pertambahan jumlah cabang, pertambahan jumlah daun, pertambahan luas daun, diameter batang, saat muncul bunga, jumlah ruas, dan bobot kering akar, batang, daun, serta bunga. Pupuk organik cair Supermes memberikan hasil terbaik terhadap peubah pertambahan panjang cabang, pertambahan jumlah cabang, pertambahan jumlah daun, pertambahan luas daun, pertambahan diameter batang, bobot kering akar, dan bobot kering daun pada tanaman melati. Hasil terbaik pada tanaman bogenfil terlihat pada ta- naman yang tidak mendapat perlakuan pupuk organik cair yaitu terhadap peubah saat muncul tunas, pertambahan panjang cabang, pertambahan jumlah cabang, pertambahan jumlah daun, dan jumlah ruas. Perlakuan pupuk organik cair Agro King 2000 memperli- hatkan hasil terbaik terhadap pertambahan panjang cabang dan pertambahan jumlah daun. Selain itu penggunaan pupuk organik cair Supermes pada gardenia memberikan hasil terbaik terhadap peubah saat muncul tunas dan jumlah ruas….
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Judul: Characteristic of Overshooting Top (OT) Based on  Himawari  8  Satellite  as  a  Convective  Cloud  Feature  that  Generates  Extreme Weather in the Java Island Region
Abstrak: Overshooting Top (OT) is a feature at the top of a convective cloud that is associated with extreme weather. Research on OT in tropical Indonesia is still very limited. The existence of geostationary satellites with wide area coverage and fast frequency observations is useful for observing the fast dynamics of the OT life cycle. Therefore, this study intends to analyze the relationship between OT and extreme weather, updraft and thermodynamic conditions of OT when extreme weather occurs, the best objective method for detecting OT in the day time and night time, and the spatiotemporal distribution of OT in the tropical region of Java Island during the 2018-2021 period. Based on visual analysis using visible channel and Himawari 8 sandwich products, 87% of extreme weather events in Java were accompanied by the appearance of OT. It indicates that the presence of the OT pattern is a convection cloud pattern or feature that is closely related to extreme weather events for the Java Island region. The existence of a time lag between the appearance of OT and extreme weather events on Java Island indicates that the OT of convection cloud can be used as a precursor or nowcasting for the appearance of extreme weather. Most of the convective cloud OT features during extreme weather events on Java Island have altitude that were only able to exceed the altitude of the equilibrium level and few were able to exceed the tropopause level of 9 km – 16 km. The difference in atmospheric conditions during extreme weather events on Java Island, which is in the tropics and subtropics, is a strong and unstable convective energy condition characterized by a larger CAPE, as well as unstable KI, LI, SI and TTI values. It is offset by kinematic factors in the form of a weak vertical wind shear (bulk wind shear 0-6 km) and a higher freezing point height. The difference between extreme weather events in the Java Island region and other tropical regions compared to subtropical regions is the strong updraft speed of convection clouds. The IRW Texture COMB algorithm based on the IRW-Texture Gradient modification and the COMB algorithm shows a significant increase in quality for detecting OT and non-OT pixels in Java. Rainy days with rainfall > 50 mm/day are very common in areas with an altitude of > 500 m. On the other hand, the level of convection activity which is indicated by the presence of OT and lightning is significantly reduced in this area. OT of convective clouds appear more frequently during the DJF season and less frequently during the JJA season. OT often appears during the day time and rarely at night time. Most OTs appear in the central part, away from the south and north coasts of Java Island during the day, while OTs that appear near the south and north coasts of Java Island can appear in the morning or afternoon.
Keyword: convective clouds, extreme weather, Overshooting Tops, Himawari 8 Satellite