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Syahbudin Hasibuan
Universitas Medan Area
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Pathogenicity Efficacy of Entomopathogen Fungus Beauveria bassiana Against In Vitro Rice Stem Borer (Scirpophaga innotata) Hasibuan, Syahbudin; Simbolon, Zulfahmi; Candra, Ifan Aulia
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 2 (2024): June 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i2.441-448

Abstract

White rice stem borer (Scirpophaga innotata) is one of the dangerous pests for rice (Oryzae sativa) because it attacks rice stems that can cause 50% loss of total production. The purpose of this study was to determine the pathogenicity of Entomopathogen Fungus Beauveria bassiana at different conidia dilutions (J), namely J1 (105), J2 (106), J3 (107), J4 (108), and J5 (109). The mortality of S. innotata larvae was tested with the density of B. bassiana of 2.08 × 106 conidia/ml. The effect of B. bassiana on the success transformation of S. innotata larvae to pupae for 14 observation day was also observed at the same B. bassiana density. This research resulted in the optimal pathogenicity of B. bassiana at dilution of 107 (treatment J3) which caused 100% death and 100% successful pupation. The lowest treatment was J5 (109 dilution) with a mortality rate of 50% and a successful pupation of 20%. The results of the probit analysis showed that the fastest average lethal time (LT50) value was found in treatment of 107 (J3) which reached 11.11 h. Keywords: Beauveria bassiana, Pathogenicity, Probit analysis, Scirpophaga innotata.
KONDISI AGROEKONOMI KARET RAKYAT DI KABUPATEN MANDAILING NATAL DAN ANALISIS KEBERLANJUTAN SYAHPUTRA, Candra; LUBIS, Zulkarnain; KARDHINATA, E. Harso; Siregar, Tumpal H.S.; LUBIS, Yusniar; HASIBUAN, Syahbudin; FAUZI, Iif Rahmat
Jurnal Penelitian Karet JPK: Volume 43, Nomor 2, Tahun 2025
Publisher : Pusat Penelitian Karet - PT. Riset Perkebunan Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/ppk.jpk.v43i2.1018

Abstract

Penelitian ini mengkaji kondisi agroekonomi karet rakyat di Kabupaten Mandailing Natal dan analisis keberlanjutannya. Penelitian ini dilakukan selama satu tahun dengan menggunakan metode Multidimensional Scaling (MDS) dan Structure Equation Modeling-Partial Least Square (SEM-PLS) untuk menganalisis data. Hasil penelitian menunjukkan bahwa kategori input, on-farm, off-farm, dan penunjang berpengaruh signifikan terhadap keberlanjutan sistem agribisnis karet. Selain itu, dimensi Ekologi, Ekonomi, Sosial, dan Teknologi memainkan peran penting dalam menjaga keberlanjutan industri karet. Temuan ini memberikan wawasan bagi para pemangku kepentingan untuk meningkatkan keberlanjutan dan kelayakan ekonomi dari usaha tani karet rakyat di Mandailing Natal.
Co-Authors Abdul Rahman Abdul Rahman Afrinaldi Lubis Agung Jabar Nur Agus Ardi Agus Ardi Ahmad Rafiki AHMAD RAFIQI TANTAWI Asmah Indrawati Astuti Kuswardani, Retno Budi Sakti, Anto Dohar Damanik, Kevin Aditya Dwika Karima Wardani E. Harso Kardhinata Ebsan Marihot Sianipar Efendi, Ihsan Ellen L. Panggabean Eri Yusni Erwin Nyak Akoeb, Erwin Nyak Gusmeizal Gusmeizal Gustami Harahap` Hadi Reka Utama, Muhamad Hadi Reka Utama, Muhamad Hafiz Marasoki Hamdani Hamdani Hasan, Uswatul Hasnudi, Hasnudi Hendra Herianto Gultom Hotma Siagian Ifan Aulia Candra Iif Rahmat Fauzi, Iif Rahmat Ilvira, Rika Fitri Khairul Saleh Khoir, Fastabiqul Litna Nurjannah Ginting Lubis, Siti Asyah Maimunah Maimunah Maimunah Maimunah Maimunah, Maimunah Marleni Marleni Muhamad Hadi Reka Utama Muhammad Jusfar Simajuntak Nasution, May Sarah Novi Septiawati Pakpahan, Plawer Arimbi pane, dona syahraina Prizoise Nababan, Christolo Prizoise Nababan, Christolo Retna Astuti Kuswardani Rika Fitri Ilvira Riski Abdul Latif Rizal Aziz Rizal Hasan Harahap Saragih, Bahdan Siagian, Hotma Siagian, Hotma Simatupang, Bernat Simatupang, Bernat Simbolon, Zulfahmi Siregar, Tumpal H.S. Siregat, Akbar Siti Mardiana Siti Mardiana Siti Sabrina Salqaura Susilawati Hasibuan Suswati Suswati suswati suswati Syahputra, Candra Tarigan, Eva Elfriani Tri Martial Yusniar Lubis Zesi Mardi