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All Journal Jambura Edu Biosfer Journal Indonesian Journal of Chemistry and Environment
Liberty Lodjo
Universitas Negeri Gorontalo
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Materials Science & Nanotechnology

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PENGARUH FILTRAT BATANG GULMA SIAM (Chromolaena odorata, L.) TERHADAP ANTIFEEDANT ULAT GRAYAK, Spodoptera litura (Lepidoptera: Noctuidae) Liberty Lodjo; Chairunnisah J Lamangantjo; Zulyanto Zakaria
Jambura Edu Biosfer Journal Vol 2, No 2 (2020): Jambura Edu Biosfer Journal (JEBJ)
Publisher : Fakultas MIPA Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (616.794 KB) | DOI: 10.34312/jebj.v2i2.2539

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh filtrat batang gulma siam (C. odorata) terhadap aktivitas antifeedant ulat grayak (S.litura) dan mengetahui konsentrasi terbaik yang dapat meningkatkan aktivitas antifeedant terhadap ulat grayak (S.litura). Penelitian ini dilaksanakan di Laboratorium Botani Juruan Biologi Universitas Negeri Gorontalo bulan Januari 2019. Metode yang digunakan adalah eksperimen dengan menggunakan desain Rancangan Acak Lengkap (RAL) yang terdiri dari 5 perlakuan dan 4 ulangan, yaitu: kontrol, konsentrasi 40%, 50%, 60% dan 70%. Analisis data menggunakan Analisis of Varians (ANOVA) dan Uji Duncan taraf 5%. Hasil penelitian menunjukkan rata-rata antifeedant larva ulat grayak pada konsentrasi 40% yaitu 39,25%, konsentrasi 50% antifeedant 44,75%, konsentrasi 60% antifeedant 46,25% serta konsentrasi 70% antifeedant 54,75%, uji Duncan menunjukkan konsentrasi terbaik yang dapat meningkatkan aktivitas antifeedant ulat grayak adalah konsentrasi 70%.
VEGETATION STRUCTURE, BIOMASS, AND CARBON STOCK OF MANGROVE FOREST IN EASTERN POHUWATO DISTRICT, MARISA SUB-DISTRICT Liberty Lodjo; Dewi Wahyuni K. Baderan; Marini Susanti Hamidun; Sukirman Rahim; Iswan Dunggio
Indonesian Journal of Chemistry and Environment Vol 6, No 2 (2023): DECEMBER 2023
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijoce.v6i2.68288

Abstract

Background: Mangrove forests are forests that have the potential to mitigate climate change from the effects of global warming, because mangroves can absorb CO2 in the atmosphere. Mangrove areas in the coastal area of East Pohuwato Regency, Marisa District are quite numerous and have the potential to absorb carbon, so that with a large enough carbon absorption can be able to reduce the levels of CO2 contained in the air. Objective: This study aims to identify vegetation structure, biomass, and carbon stocks in the coastal area of East Pohuwato Regency, Marisa District. Results: the study showed that there were 8 types of mangroves, including Soneratia alba, Rhizophora mucronata, Ceriops decandra, Ceriops tagal, Avicennia marina, Rhizophora stylosa, Sonneratia caseolaris, Rhizophora apiculata. The highest IVi value was found in the Ceriops decandra species with an IVi value of 119.21 in the tree category, then for the sapling category which had the highest IVi value found in the Rhizophora apiculata species of 98.6, for the seedling level the IVi value was found in the Rhizophora apiculata species of 80.23%. The total biomass value is 37,027.2 Kg/ha and the carbon contained in the mangrove forest of East Pohuwato Regency, Marisa District is 18,535.7 Kg C/ha with carbon dioxide absorption of 68027.5 Kg CO2/ha. Conclusion: There are 8 types of mangrove species found in the mangrove forests of the Coastal Area of East Pohuwato Regency, Marisa District at.
Co-Authors Chairunnisah J Lamangantjo Dewi Wahyuni K. Baderan Iswan Dunggio Marini Susanti Hamidun Sukirman Rahim Zulyanto Zakaria