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PENGARUH WAKTU PEMANGKASAN DAUN DIBAWAH TONGKOL TERHADAP PRODUKSI TANAMAN JAGUNG (Zea mays L) DI DESA PADANG KECAMATAN BINTAUNA BOLAANG MONGONDOW UTARA Noeng, Masshynio Ch. A.; Lumingkewas, Adeleyda M. W.; Najoan, Jemmy; Pinaria, Arthur; Tumbelaka, Selvie; Wantasen, Sofia; Pakasi, Sandra
Biofaal Journal Vol 5 No 1 (2024): Biofaal Journal
Publisher : Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/biofaal.v5i1pp019-025

Abstract

Jagung (Zea mays L) adalah salah satu tanaman pangan yang merupakan sumber karbohidrat utama kedua setelah beras. Metode modifikasi lingkungan mikro dapat meningkatkan produksi jagung. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh waktu pemangkasan daun di bawah tongkol terhadap tingkat produksi jagung. Studi ini dilakukan di Desa Padang, Kecamatan Bintauna, Kabupaten Bolaang Mongondow Utara, Sulawesi Utara, dari Desember 2023 hingga April 2024. Metode penelitian adalah rancangan acak kelompok dengan lima perlakuan dan tiga kali ulangan. Penelitian menemukan bahwa perlakuan pemangkasan daun di bawah tongkol adalah tanpa pemangkasan (P0), pemangkasan 60 hari setelah tanam (P1), pemangkasan 70 hari setelah tanam (P2), pemangkasan 80 hari setelah tanam (P3) dan pemangkasan 90 hari setelah tanam. Hasil penelitian menunjukkan bahwa komponen produksi pada panjang tongkol, yaitu ukuran tongkol 19,26 cm dengan diameter 5,00 cm, berat biji sekitar 241.92 g, dan jumlah biji sekitar pertongkol 617.42, meskipun berdasarkan hasil analisis sidik ragam, pengaruh tanaman jagung hanya terbatas pada panjang dan diameter tongkol.
Identification of Phytochemical Compounds Antioxidant Leaf Extract and Clove Flower Extract (Syzygium aromaticum) Lumingkewas, Adeleyda M. W.; Unitly, Adrien Jems Akiles
Jurnal Penelitian Pendidikan IPA Vol 9 No 10 (2023): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i10.4927

Abstract

One plant known as a flavoring spice, but also as a traditional medicinal plant that is thought to contain antioxidant phytochemical compounds, namely cloves (Syzygium aromaticum) which are widely found in Maluku, Sulawesi and surrounding areas. This study aims to identify the phytochemical compounds of antioxidants of leaf extract and clove flower extract (Syzygium aromaticum) originating from North Sulawesi using leaf methanol extract and clove flowers, where the test was carried out at the Research Center for Spice and Medicine Plant (Ballitro) Bogor included the alkaloid qualitative test , flavonoids, saponins, tannins, and triterpenoids. The results found that there were components of antioxidant phytochemicals in the form of alkaloids, flavonoids, saponins, tannins and triterpenoids in the extraran methanol leaf and clove flowers, with the frequency of existence ranging from there to many.
Moringa (Moringa oleifera L.) Seed Powder as a Bioadsorbent for Heavy Metals in Community Gold Mine Effluent: Implications for Agricultural Water Use Wantasen, Sofia; Tumbelaka, Selvie; Lumingkewas, Adeleyda M. W.; Paat, Frangky J.
Jurnal Agroekoteknologi Terapan (Applied Agroecotechnology Journal) Vol. 6 No. 2 (2025): ISSUE JULY-DECEMBER 2025
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jat.v6i2.65932

Abstract

Gold mining in rural areas can contaminate rivers and canals that are also used for irrigation, creating risks for agricultural water use. This study evaluated Moringa oleifera seed powder as a low-cost bioadsorbent to improve community gold mine wastewater in Bolaang Mongondow Timur, North Sulawesi, Indonesia. Effluent collected at the mine outlet was treated in batch with moringa seed powder at 0, 0.5, 1.0 and 1.5 g L⁻¹. Concentrations of Cd, Cr, Cu, Pb and Hg were measured by atomic absorption spectrophotometry before and after treatment, and summarized together with removal efficiencies and Indonesian effluent standards. A dose of 0.5 g L⁻¹ gave the best apparent reduction for Cd and Cu, while Pb and Hg responded best at higher doses; Cr was only weakly affected, consistent with the limited removal of anionic Cr(VI) by unmodified biosorbents. Overall, moringa seed powder reduced the levels of several cationic metals. It may help lower heavy-metal loads entering agricultural water systems. Still, the non-replicated, descriptive nature of the data means that further replicated and field-based studies are needed before routine irrigation use can be recommended. Keywords: Moringa oleifera; bioadsorbent; gold mine wastewater; heavy metals; irrigation water quality