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All Journal Biologica Samudra Best Journal (Biology Education, Sains and Technology) JUSTER: Jurnal Sains dan Terapan Jurnal Masyarakat Berdikari dan Berkarya (MARDIKA)
Harahap, Sriwinaty
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Physics Public Health Social Sciences Veterinary

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Journal : Biologica Samudra

 1 
Inventory of Insect Species and Populations on Arenga pinnata in Pargarutan Dolok Village, East Angkola District, South Tapanuli Regency Siti, Siti Hardianti Wahyuni; Friska, Meiliana; Handayani, Surya; Nasution, Jumaria; Harahap, Sriwinaty
JURNAL BIOLOGICA SAMUDRA Vol 7 No 1 (2025): Biologica Samudra
Publisher : Program Studi Biologi, Fakultas Teknik, Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jbs.v7i1.11816

Abstract

Palm plants (Arenga pinnata) are a type of palm plant that has high economic value in Indonesia, including in South Tapanuli Regency. All parts of the palm plant, ranging from sap, fruits, leaves, to stems have various benefits. However, in its cultivation, palm plants often face disturbances from insects, both as pests and as pollinating agents that have an important ecological role. Therefore, this study aims to inventory the types and populations of insects associated with palm plants in order to understand insect diversity and identify potential pests and natural predators. This study was conducted in Pargarutan Dolok Village, East Angkola District, South Tapanuli Regency for eight weeks using the anthracane trap method and direct observation. The results showed that insects of the order Hymenoptera, especially the family Apidae, were the group with the highest number of anthracite traps, at 23 individuals. In total, 65 individual insects were found consisting of 6 orders and 10 families. The insect population during the 1st to 4th week was 40 individuals, while in the 5th to 8th week it was 25 individuals. The role of insects found in palm plants includes pollinators, predators, and polyphages.
Pengaruh pemberian berbagai dosis hormon IAA terhadap pertumbuhan stek bunga Mawar (Rosa sp.) Fiska, Meiliana; Harahap, Sriwinaty; Pebriadi, Rahmat
JURNAL BIOLOGICA SAMUDRA Vol 6 No 2 (2024): Biologica Samudra
Publisher : Program Studi Biologi, Fakultas Teknik, Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jbs.v6i2.10813

Abstract

Peminatan tanaman mawar (Rosa sp.) masih menjadi primadona sebagai tanaman hias sehingga perlu dilakukan perbanyakan vegetative. Salah satunya adalah stek atau cutting yaitu dengan cara memotong sebagian tanaman dan langsung ditanam ke media tanam. Tujuan penelitian ini adalah untuk mengetahui pengaruh pemberian berbagai dosis hormon IA A terhadap pertumbuhan stek bunga mawar. Penelitian ini dilaksanakan pada Oktober hingga November 2023 di lahan Fakultas Pertanian Universitas Graha Nusantara, Padangsidimpuan. Metode yang digunakan adalah metode Rancang Acak Kelompok (RAK) non faktorial yang terdiri dari 6 perlakuan 4 ulangan dengan masing-masing perlakuan ZPT IAA yaitu Z0 (Kontrol atau tanpa pemberian IAA), Z1 (Dosis 2 gram / 250 L air), Z2 (Dosis 4 gram / 250 L air), Z3 (Dosis 6 gram / 250 L air), Z4 (Dosis 8 gram / 250 L air), Z5 (Dosis 10 gram / 250 L air). Hasil penelitian adalah parameter persentase tumbuh, jumlah tunas, jumlah daun menunjukkan adanya pengaruh yang nyata dan untuk panjang akar menunjukkan perbedaan tinggi yang berbeda. Perlakuan terbaik terdapat pada Z4 yaitu Dosis 8 gram / 250 L air.
Co-Authors Adelina, Rasmita Amnah, Rizky Arryannur Siregar, Deasy Budi, Rahmad Setia Erin Alawiyah Siregar, Erin Alawiyah Fernando, Ryanov Louis Fiska, Meiliana Handayani, Surya Handayanti, Surya Hardianti Wahyuni, Siti Jumaria Lubis, Erwin Syah Meiliana Friska Nasution, Jumaria Nasution, Zakia Pane, Doharni Pebriadi, Rahmat Sipahutar, Asrul Siregar, Septi Agustina siti hardianti wahyuni, siti hardianti Siti, Siti Hardianti Wahyuni Yusriani Nasution