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All Journal INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni Biospecies Berkala Ilmiah Pertanian Pelita Perkebunan Jurnal Agroindustri Mimbar Agribisnis: Jurnal Pemikiran Masyarakat Ilmiah Berwawasan Agribisnis JMM (Jurnal Masyarakat Mandiri) SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Jurnal Pengabdian Magister Pendidikan IPA PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Ilmiah Agribios International Journal on Food, Agriculture and Natural Resources (IJFANRES) Journal of Agriculture and Applied Biology Journal La Lifesci Journal of Agriculture and Applied Biology ( JAAB) Proceedings Series on Physical & Formal Sciences Batara Wisnu : Indonesian Journal of Community Services Journal of Applied Agricultural Science and Technology Journal of Soilscape and Agriculture atech-i
Arum, Ayu Puspita
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Journal : Biospecies

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Pengaruh Jenis Ekstrak Dan Beberapa Variasi Konsentrasi Zat Alelopati Alami Dalam Menghambat Perkecambahan Benih Dan Pertumbuhan Bibit Kakao (Theobroma cacao L.) Widiono, Fajar Kurnia Maulid; Kusbianto, Dwi Erwin; Arum, Ayu Puspita; Setiyono
Biospecies Vol. 19 No. 1 (2026): Januari 2026 (In press)
Publisher : Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/biospecies.v19i1.41173

Abstract

Cocoa is a strategic plantation commodity that contributes significantly to export-import activities, increasing the country's foreign exchange. However, the distribution of cocoa seeds is faced with the problem of recalcitrant seeds, which can be overcome by using natural allelopathic substances. Natural allelopathic plant extracts contain toxic compounds such as alkaloids, phenolics, and terpenoids which are effective in inhibiting germination. The purpose of this study was to determine the effect of the type of extract and the concentration of natural allelopathic substances in inhibiting the process of seed germination and growth of cocoa seedlings. This study used a factorial Completely Randomized Design (CRD). The first factor was the type of extract, namely cogongrass roots and tomato leaves. The second factor was the concentration of natural allelopathic substances, namely control, 4%, 6%, and 8%. Data were analyzed using the ANOVA (Analysis of Variance) test. If there was a significant difference between treatments, further testing was carried out using Duncan's multiple range test at the 5% level. The results of the study showed (1) the interaction between the type of extract and the concentration of natural allelopathic substances had a significant effect on the observed variables of germination power, vigor index, lethal concentration (LC50), plant growth rate, and number of leaves, with the best treatment being the cogongrass root extract at a concentration of 4%. (2) The effect of the type of natural allelopathic extract had a significant effect on the parameters of vigor index, plant growth rate, number of leaves, and stem diameter. (3) The effect of the concentration of natural allelopathic substances had no significant effect on any of the observed variables.  
Co-Authors . Usmadi Ahmad Ilham Tanzil Amam, Amam Amany, Alfiyyah Nur Anggraini, Febri Anggriawan, Rendy Ayuningtyas, Putri Larasati Bulqis, Malika Dewi, Lara Putri Kartika Dewi, Nilasari Dinata, Ferry Djoko Soejono Dwi Erwin Kusbianto Dyah Ayu Savitri Fanata, Wahyu Indra Duwi Fandri, Ferdi Zul Farisi, Oria Alit Fauziah, Fithriyatul Febridayanti, Fika Gatot Subroto Herliani, Canserlita Puteri Hidayah, Satria Nurul Hidayah Ika Purnamasari Innaya, Lutfika Revi Irwanto Sucipto, Irwanto Izah, Ika Lailatul Kusmanadhi, Bambang Ma'rufi, Isa Maharani, Ariq Dewi Mandala, Marga Maulana, Juraisyki Iqbal Maulidana, Ach. Ariful Meliala, Susan Barbara Patricia Sembiring Munandar, Denna Eriani Nisak, Fauziatun Noer Novijanto Novendra, Dimas Ihza Noviana, Sulfi Nurcharisma, Adinda Nurrahmi, Tyas Putri Yulia nurul latifah Okti, Reski Dwi Patricia Sembiring, Susan Barbara Patricia SM, Susan Barbara Patricia SM., Susan Barbara Patricia, Susan Barbara Pradana, Rieski Ega Ramadani, Prayogo Gilang Ramadhan, Mohamad Aji Rizki Ramadhanti, Choirul Lisa Ratih Apri Utami Ratnasari, Tri Ristiyana, Suci Romdhon, Mochammad Syihab Rony, Zahara Tussoleha Rosania, Shela Rosyadi, Muhammad Ghufron Rosyady, Muhammad Ghufron Sari, Andini Permata Saroh, Cindy Nur May setiyono Setiyono Setiyono Slameto Slameto Soetriono Soetriono Sugeng Winarso Sukron Romadhona Suud, Hasbi Mubarak TRI HANDOYO Tri Wahyu Saputra Ummah, Anisatul Ummi Sholikhah Widiono, Fajar Kurnia Maulid Wildan Muhlison, Wildan Wulanjari, Distiana Zahrosa, Dimas Bastara