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All Journal Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut OrchidAgro
Sumaryono
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Agriculture, Biological Sciences & Forestry Environmental Science

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Pengaruh Sistem Tanam Jajar Legowo Terhadap Pertumbuhan Dan Hasil Tanaman Padi (Oryza sativa) Varietas Inpari 48 Aisyah, Iis; Sumaryono; Mulyana, Hudaya
OrchidAgro Vol. 4 No. 2 (2024)
Publisher : Fakultas Pertanian Universitas Winaya Mukti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35138/orchidagro.v4i2.798

Abstract

Pada bulan Februari hingga Juli 2023, penelitian dilakukan di persawahan Desa Karangjaya, Kecamatan Pedes, Kabupaten Karawang. Sawah tersebut terletak pada ketinggian rata-rata sekitar 100 meter di atas permukaan laut. Tujuan penelitian ini adalah untuk mengetahui bagaimana pengaruh strategi penanaman Jajar Legowo terhadap pertumbuhan dan produktivitas tanaman padi varietas Inpari 48. Metode penelitian menggunakan Rancangan Acak Kelompok (RAK) sederhana yang terdiri dari perlakuan 1: sistem tanam tegel, perlakuan 2: sistem tanam jajar legowo 2:1, perlakuan 3: sistem tanam jajar legowo 3:1, dan perlakuan 4: sistem tanam jajar legowo 4:1. Parameter yang diamati yaitu tinggi tanaman,jumlah anakan,jumlah anakan poduktif,panjang malai,jumlah gabah per malai dan bobot 1000 butir. Hasil penelitian menunjukan perlakuan Sistem Tanam Jajar Legowo menghasilkan pertumbuhan dan hasil tanam padi yang lebih baik. Perlakuan jajar legowo 2:1 berpengaruh nyata terhadap jumlah anakan dan jumlah gabah per malai.
DAILY OCCURRENCE OF WHALE SHARKS (Rhincodon typus) AND MIGRATION OF NEW INDIVIDUALS IN THE WATERS OF KWATISORE Maruanaya, Yan; Mirino, Manuel; Sumaryono
Marine Fisheries : Journal of Marine Fisheries Technology and Management Vol. 16 No. 1 (2025): Marine Fisheries: Journal of Marine Fisheries Technology and Management
Publisher : Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jmf.v16i1.56004

Abstract

The waters of Kwatisore are recognized as a consistent aggregation site for whale sharks (Rhincodon typus) throughout the year, with an increasing number of individuals observed. Understanding individual occurrence patterns is essential for monitoring population dynamics and conservation planning. This study aimed to analyze the daily occurrence of whale sharks based on individual identification and assess the entry of new individuals into the Kwatisore waters. Data collection was conducted from November 2023 to January 2024. A total of 27 male individuals were recorded, with a cumulative 592 sightings. Body lengths ranged from 2.5 to 5 meters, dominated by individuals approximately 3.5 meters in length. Spatial distribution of daily occurrences followed the positioning of anchored lift-net fishing gear (bagan), while temporal distribution showed a higher occurrence during morning hours. In 2023, 13 new individuals were recorded entering the area. The daily appearances were dominated by juvenile-sized individuals, and sighting frequency varied among individuals. Spatial and temporal patterns were strongly influenced by anchovy (Stolephorus spp.) catches from the bagan gear, while the entry of new individuals contributed to the growing aggregation of whale sharks in the Kwatisore waters. Keywords: whale sharks, daily occurrence, new individual migration
Co-Authors Aisyah, Iis Hudaya Mulyana Maruanaya, Yan Mirino, Manuel