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All Journal BioEksakta : Jurnal Ilmiah Biologi Unsoed Jurnal Pertanian Agros
Habibah, Puan
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Veterinary

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STUDI PERBANDINGAN KEANEKARAGAMAN SOIL SEED BANK PADA LAPISAN KEDALAMAN YANG BERBEDA DI DAERAH BUDIDAYA LAHAN KERING DAN SAWAH Azzahra Gusviani, Nisa; Gian juliano; Dini Hervani; Puan Habibah; Enriski Efrata
Jurnal Pertanian Agros Vol 28 No 1 (2026): EDISI JANUARI
Publisher : Fakultas Pertanian Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v28i1.158

Abstract

Soil seed bank refers to seeds that remain dormant and are stored in the soil. One group of plants that commonly stores its seeds in the soil is weeds, which do so as a form of survival and reproduction strategy. This study aimed to analyze the diversity and density of weed soil seed banks at different soil depths in upland and paddy cultivation areas. The research was conducted in the horticultural and paddy field areas of Andalas University, Padang, from May to July 2022. Soil samples were collected using a purposive sampling method at depths of 0–10 cm, 10–20 cm, and 20–30 cm, with three replications for each land type. The data were analyzed descriptively by calculating relative density (KR), relative frequency (FR), summed dominance ratio (SDR), and importance value index (INP). The results showed that both weed species diversity and abundance decreased with increasing soil depth. In upland areas, Euphorbia hirta (patikan kebo) exhibited the highest SDR and INP values at depths of 0–10 cm and 10–20 cm, whereas in paddy fields, this species remained dominant despite a reduction in its population. No viable seeds were found at a depth of 20–30 cm in paddy soils. These findings indicate that variations in soil depth and land conditions significantly influence the composition and dominance of weed species, and such information can serve as a basis for developing effective and site-specific weed management strategies.
Uji Alelopati Ekstrak Daun Alang-Alang (Imperata cylindrica) terhadap Viabilitas dan Vigor Benih Kacang Hijau Freddy Alexander Simatupang; Puan Habibah; Ahmad Alwi Azhari; Enriski Efrata; Novi Malinda; Zafitra Zafitra
BioEksakta : Jurnal Ilmiah Biologi Unsoed Vol 8 No 1 (2026): BioEksakta
Publisher : Fakultas Biologi Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.bioe.2026.8.1.19464

Abstract

Kacang hijau termasuk salah satu tanaman pangan penting yang pertumbuhannya dapat dipengaruhi oleh senyawa alelopati dari gulma seperti alang-alang (Imperata cylindrica). Tujuan penelitian untuk mengevaluasi respons perkecambahan dan pertumbuhan awal kacang hijau terhadap berbagai konsentrasi ekstrak daun alang-alang serta menganalisis pengaruhnya terhadap viabilitas dan vigor benih kacang hijau. Penelitian dilaksanakan di Laboratorium Ekofisiologi, Fakultas Pertanian, Universitas Riau, menggunakan Rancangan Acak Lengkap (RAL) faktor tunggal dengan lima taraf konsentrasi, yaitu 0% (kontrol), 5%, 10%, 15%, dan 20% ekstrak daun alang-alang yang diulang sebanyak empat kali. Parameter yang diamati meliputi daya berkecambah, kecepatan berkecambah, panjang akar dan hipokotil, berat basah, berat kering, serta indeks vigor I dan II. Hasil analisis ragam menunjukkan bahwa aplikasi ekstrak daun alang-alang pada konsentrasi 5% hingga 20% tidak berpengaruh nyata (p > 0,05) terhadap seluruh parameter pengamatan. Daya berkecambah yang mencapai 100% pada semua variasi konsentrasi mengindikasikan bahwa ekstrak daun alang-alang tidak bersifat fitotoksik dan tidak menghambat pertumbuhan awal benih kacang hijau. Analisis korelasi Pearson menunjukkan hubungan positif dan sangat kuat antara panjang akar/hipokotil dengan indeks vigor I (r = 0,76), serta berat kering dengan indeks vigor II (r = 0,998). Kata kunci : Alelopati, Imperata cylindrica, kacang hijau, perkecambahan, vigor
Co-Authors Ahmad Alwi Azhari Dini Hervani Efrata, Enriski Freddy Alexander Simatupang Gian Juliano Nisa Azzahra Gusviani Novi Malinda Zafitra Zafitra