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All Journal Agrifor : Jurnal Ilmu Pertanian dan Kehutanan Jurnal Ilmu-Ilmu Pertanian Indonesia Jurnal Penelitian Pertanian Terapan Jurnal Biologi Tropis Jurnal Pemberdayaan: Publikasi Hasil Pengabdian Kepada Masyarakat Agroteknika Jurnal Triton Jurnal Pengelolaan Perkebunan (JPP)
Anna Kusumawati
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Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Education Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Mechanical Engineering Social Sciences Veterinary Other

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Influence of Rainfall and Fire Caterpillar on Oil Palm Yield at Tor Gamba Yudi Fahmi; Anna Kusumawati; Sutan Borohim Siregar
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): Juli - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i3.12224

Abstract

As a strategic plantation commodity, oil palm (Elaeis guineensis Jacq.) plays a crucial role in supporting Indonesia's national economy, yet its productivity is strongly influenced by climatic variability and pest pressure, particularly fire caterpillar (Limacodidae) attacks that damage foliage and reduce photosynthetic capacity. This study aimed to analyze the relationships between annual rainfall, fire caterpillar attack intensity, and fresh fruit bunch (FFB) productivity at PT Perkebunan Nusantara III Tor Gamba I Plantation over a five-year period (2012–2016; n = 5 annual observations). A quantitative observational-correlational design was applied using secondary archival data on rainfall (mm/year), pest attack intensity (mean larvae per frond), and FFB yield (kg/ha/year). Pearson correlation and paired T-tests were conducted at a 5% significance level (df = 3; T-table = 2.78). Rainfall showed a very strong positive correlation with FFB productivity (r = 0.95; T-count = 9.34) and a very strong negative correlation with fire caterpillar attack intensity (r = 0.98; T-count = 12.96), indicating that higher rainfall suppressed pest population growth. Furthermore, pest attack intensity had a very strong negative correlation with FFB productivity (r = 0.97; T-count = 9.83). The small sample size (n = 5) constrains statistical power and limits causal inference; results should be interpreted as descriptive associations. Nevertheless, findings suggest that rainfall monitoring could support early warning systems for pest outbreaks and inform integrated pest management strategies for oil palm plantations.
Analisis Kesesuaian Lahan untuk Tanaman Tebu (Saccharum officinarum L.) di Desa Wedomartani, Kecamatan Ngemplak, Kabupaten Sleman Yogyakarta: Analysis of Land Suitability for Sugarcane (Saccharum officinarum L.) in Wedomartani Village, Ngemplak District, Sleman Regency, Yogyakarta Mia Dwi Etafiana; Anna Kusumawati; Dwi Aryani Suryangingrum; Azhari Rizal; Muhammad Mustangin; Ratna Sri Harjanti; Yunaidi Yunaidi
JURNAL TRITON Vol. 15 No. 1 (2024): JURNAL TRITON
Publisher : Politeknik Pembangunan Pertanian Manokwari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47687/jt.v15i1.623

Abstract

Pemerintah menargetkan untuk peningkatan gula nasional adalah dengan cara perluasan areal tebu di Indonesia. Pencarian lahan baru sebagai usaha perluasan areal tebu harus diteliti sumberdaya lahannya agar berproduksi secara berkelanjutan. Tujuan dari penelitian ini yaitu mengidentifikasi kelas kesesuaian lahan secara spesifik bagi tanaman tebu di Desa Wedomartani agar dapat memberikan saran sesuai dengan hasil analisis kesesuaian lahan untuk pengelolaan lahan yang tepat. Penelitian ini dilakukan di bulan Juni-Juli 2023 di Desa Wedomartani dan Laboratorium Tanah dan Nutrisi Tanaman Universitas Muhammadiyah Yogyakarta. Pengambilan sampel dilakukan pada tiga titik lokasi di desa tersebut dengan menggunakan metode random sampling. Penentuan lokasi penelitian atau SPL didasarkan pada lahan yang ditanami tebu di Desa Wedomartani. Parameter yang diamati antara lain kondisi iklim, drainase, tekstur tanah, kedalaman tanah efektif, Kapasitas Tukar Kation (KTK), pH tanah, C-Organik, N Total, P Tersedia, K Tersedia, kemiringan lereng, bahaya erosi dan banjir serta volume singkapan batuan dan batuan permukaan. Hasil penelitian menunjukkan kondisi lahan di Wedomartani untuk kesesuaian lahan tanaman tebu yaitu S3rc dan S3na yang mempunyai faktor pembatas berupa tekstur tanah dan kurangnya P Tersedia. Perbaikan yang dapat dilakukan yaitu penambahan pupuk organik dan pupuk anorganik yang mempunyai unsur hara P.
Co-Authors Adiprasetya Widyatama Agus Eka Alazis Angga Ardiansyah Azhari Rizal Benito Heru Purwanto Desra Ramadhan Putratama Dwi Aryani Suryangingrum Ekawati, Rina Eko Hanudin Lintang Pambayun Luci Paonganan Makruf Nurudin Mia Dwi Etafiana Mohammad Sujai Mualif Muhammad Fiqi Muhammad Mustangin Pantja Siwi VR Ingesti Rahmi Sabrina Hamami Ratna Sri Harjanti Rina Puji Lestari Rizky Ahmad Al Farezi Romi Dongoran Siregar Saputri, Lestari Hetalesi Sutan Borohim Siregar Wini Aswari Br Barus Yudi Fahmi Yunaidi Yunaidi