Judul: Pengaruh Zat Penacu Tumbuh terhadap Serapan Hara Tanaman Kedelai (Glycine max L. Merrill) dan Kacang Tanah (Arachis hypogaea L.) Pada Beberapa Cara Perbaikan Kesuburan Tanah
Abstrak: Tujuan penelitian ini ialah mengetahui pengaruh pemberian zat pemacu tumbuh Dharmasri 5EC terhadap serapan hara tanaman kedelai dan kacang tanah pada beberapa cara perbaikan kesuburan tanah. Percobaan dilakukan di rumah kaca dengan rancangsl acak lengkap yang disusun secara faktorial dengan tiga ulangan.
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Judul: Pengaruh Pemberian Pupuk Kandang dan Penanaman Kacang Kedelai (Glycine max (L.) Merril) terhadap Erosi dan Limpasan Permukaan pada Tanah Latosol Darmaga
Abstrak: Pelestarian lahan dapat dilakukan dengan menggunakan tanaman serta pemberian bahan organik/pupuk kandang untuk mengurangi kerusakan tanah akibat erosi sehingga produktivitas lahan dapat dipertahankan dan ditingkatkan. Pelestarian serta peningkatan produktivitas lahan mempakan usaha untuk mengimbangi jumlah lahan yang semakin berkurang. Tujuan penelitian ini adalah untuk mempelajari pengaruh dan hubungan pemberian pupuk kandang pada penanman kacang kedelai (Glycine Mar (L.) Merril) terhadap limpasan dan erosi pada tanah latosol. Penelitian ini dilakukan pada tanah latosol Darmaga dengan kemiringan 9% dan menggunakan 8 petak kecil ukuran 221x1 X 2.5m. Pupuk kandang yang digunakan adalah pupuk kandang ayam, sapi dan kambing. Rancangan percobaan yang digunakan yaitu Rancangan Acak Lengkap. Pada tiap perlakuan dilakukan pengulangan sebanyak dua kali. Dosis setiap pupuk kandang yang digunakan adalah 30 todha. Penelitian ini dimulai tanggal 4 September 1996 sampai tanggal 4 Desember sesuai dengan umur tanaman kedelai.
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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