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All Journal Agrifor : Jurnal Ilmu Pertanian dan Kehutanan Jurnal Kolaboratif Sains
Sulviana
universitas Muhammadiyah Palu
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Pengaruh Interval Penyiraman dan Dosis Pupuk terhadap Persentase Hidup Semai Acacia crassicarpa: Effect of Watering Interval and Fertilizer Dosage on the Survival Rate of Acacia crassicarpa Seedlings Sulviana
Jurnal Kolaboratif Sains Vol. 8 No. 10: Oktober 2025
Publisher : Universitas Muhammadiyah Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56338/jks.v8i10.9066

Abstract

Climate change increases the risk of drought and threatens the success of forest rehabilitation by reducing seedling survival. This study aimed to determine the effects of watering interval and fertilizer dosage on the survival rate of Acacia crassicarpa seedlings under greenhouse conditions. The research was conducted at the Permanent Nursery, Faculty of Forestry, Tadulako University, using a completely randomized design arranged in a split-plot pattern. The main plot factor was watering interval (2, 4, and 6 days), and the subplot factor was NPK fertilizer dosage (0, 1.5, 3, and 4.5 g per seedling), with three replications and six seedlings per replicate (a total of 216 seedlings). Analysis of variance showed that watering interval (F = 6.30; p < 0.05) and fertilizer dosage (F = 50.65; p < 0.01) significantly affected seedling survival, whereas their interaction was not significant (F = 1.35; p > 0.05). The highest survival rate was obtained under a 4-day watering interval (81%) and a low fertilizer dosage of 1.5 g (94%), while higher fertilizer dosages (3 and 4.5 g) reduced survival to 55% and 33%, respectively. These findings indicate that A. crassicarpa seedling viability is sensitive to high fertilizer concentrations but performs optimally under moderate watering frequency, providing useful implications for silvicultural management in drought-prone tropical regions.
ANALISIS SIFAT FISIK TANAH DI BAWAH TEGAKAN EBONI (Diospyros celebica Bakh.) MURNI DAN CAMPURAN DI DESA AKO KECAMATAN PASANGKAYU Sulviana, Sulviana; Wardah, wardah; Pribadi, Hendra
Agrifor : Jurnal Ilmu Pertanian dan Kehutanan Vol 25, No 1 (2026): Maret 2026
Publisher : Universitas 17 Agustus 1945 Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31293/agrifor.v25i1.8694

Abstract

Diospyros celebica Bakh. merupakan salah satu jenis eboni yang memiliki nilai ekonomi tinggi di pasar nasional maupun internasional. Namun, eksploitasi yang berlangsung sejak tahun 1920 telah menyebabkan penurunan populasi dan kerusakan habitat alami jenis ini. Pemahaman mengenai kondisi tempat tumbuh alami, khususnya sifat fisik tanah, menjadi hal penting dalam mendukung konservasi dan pengembangan budidaya eboni. Penelitian dilakukan di Desa Ako, Kecamatan Pasangkayu, Sulawesi Barat, menggunakan metode survei. Pengambilan sampel tanah dilakukan secara purposive sampling pada dua jenis tegakan (murni dan campuran) pada dua kedalaman (0–30 cm dan 30–60 cm). Parameter yang diukur meliputi tekstur, struktur, bobot isi, porositas, dan permeabilitas. Hasil menunjukkan bahwa sifat fisik tanah pada kedua jenis tegakan berbeda. Tegakan campuran memiliki karakteristik tekstur, bobot isi, porositas, dan permeabilitas yang lebih baik dibandingkan tegakan murni. Struktur tanah pada kedua tegakan termasuk dalam kategori struktur granular. Perbedaan karakteristik sifat fisik tanah menunjukkan bahwa tipe tegakan memengaruhi kondisi tanah. Informasi ini penting dalam mendukung strategi konservasi dan pengelolaan habitat eboni di masa mendatang.
Co-Authors Hendra Pribadi Wardah Wardah