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All Journal Jurnal Agrotek Tropika Jurnal Ilmiah RESPATI Open Global Scietific Journal
Salmiyati Salmiyati
Institut Teknologi Perkebunan Pelalawan Indonesia
Agriculture, Biological Sciences & Forestry Environmental Science

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Daya Hambat In Vitro Ekstrak Buah Bintaro (Cerbera manghas L.) terhadap Jamur Penyebab Busuk Akar (Ganoderma sp.) pada Kelapa Sawit Fradilla Swandi; Febrianti Febrianti; Salmiyati Salmiyati; Dewi Andri Yani
JURNAL PERTANIAN Vol 16, No 3 (2025): Jurnal Ilmiah Respati
Publisher : Universitas Respati Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52643/jir.v16i3.5404

Abstract

Ganoderma sp. is a fungal pathogen that causes basal stem rot in oil palm, leading to production losses of up to 80%. One potential method to inhibit fungal growth is the use of plant-based fungicides derived from bintaro fruit (Cerbera manghas L.) extract. This study aims to determine the effective concentration of C. manghas fruit extract for controlling Ganoderma sp., the causal agent of basal stem rot disease in oil palm, under in vitro conditions. The extract was tested at concentrations of 0%, 4%, 6%, 8%, and 10% using a Completely Randomized Design with five treatments and five replications. The extract was prepared using distilled water (simple extraction) and incorporated into PDA medium. Observed parameters included fungal colony area, mycelial dry weight, and mycelial fresh weight. Data were analyzed using analysis of variance (ANOVA), followed by the Least Significant Difference (LSD) test at the 5% significance level. The results indicated that C. manghas fruit extract inhibited the growth of Ganoderma sp. The 6% extract concentration exhibited the highest inhibitory effect, reducing colony area by 15.49%, dry weight by 31.30%, and fresh weight by 30.77%.
Evaluation of the Viability and Vigor of Karya Pelalawan Rice Seeds (Oryza sativa L.) Under Salt Stress Conditions Mardiani Putri; Yudia Azmi; Salmiyati Salmiyati
Open Global Scientific Journal Vol. 5 No. 1 (2026): Open Global Scientific Journal
Publisher : Research and Social Study Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70110/ogsj.v5i1.84

Abstract

Background: One of the well-known rice varieties from Pelalawan is the Karya Pelalawan rice, which can be developed in tidal swamp lands in Riau Province. The tidal lands of Pelalawan Regency frequently experience variable salinity levels, yet the salinity tolerance of the Karya Pelalawan rice variety remains poorly defined. Consequently, it is necessary to conduct tests across diverse salinity concentrations. Aims: This research aims to identify the tolerant concentration of NaCl in the salinity test on the viability and vigor of rice seeds (Oryza sativa L.) of the Karya Pelalawan variety.Methods: The study employed a non-factorial Completely Randomized Design (CRD) consisting of 5 treatments with 5 replications. The treatments were as follows: P0 (0 ppm), P1 (2500 ppm), P2 (5000 ppm), P3 (7500 ppm), and P4 (10000 ppm). The observed parameters included germination percentage, first count test (FCT) percentage, germination rate, radicle and plumule growth of seedlings, and seed vigor test. Data were analyzed using Excel and ANOVA, followed by the DMRT at 5% significance level.Results: The results showed that NaCl application affected the germination percentage, FCT percentage, germination rate, radicle and plumule growth, and seed vigor. The tolerant NaCl concentration for germination was P1 (2,500 ppm) as seen from the germination percentage, FCT percentage, germination rate, and seed vigor.Conclusion: The application of salinity stress can affect germination characteristics. However, at 2500 ppm, it can improve the germination quality of Karya Pelalawan rice seeds.
RESPON PERTUMBUHAN BIBIT KELAPA SAWIT (Elaeis guineensis Jacq.) DI PEMBIBITAN TERHADAP DOSIS DAN INTERVAL WAKTU PEMANFAATAN PUPUK ORGANIK CAIR DARI LIMBAH PASAR Salmiyati Salmiyati
Jurnal Agrotek Tropika Vol. 14 No. 2 (2026): JURNAL AGROTEK TROPIKA VOL. 14, MEI 2026
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v14i2.9942

Abstract

Ketersediaan limbah organik pasar seperti sisa buah, sayuran, ikan, dan unggas sangatmelimpah, namun pemanfaatannya sebagai pupuk cair masih terbatas. Penggunaan limbahpasar sebagai pupuk organik cair (POC) dapat mengurangi volume sampah sekaligusmeningkatkan sirkulasi hara dalam pertanian berkelanjutan. Pemanfaatan limbah organikpasar sebagai sumber pupuk berkontribusi pada pengurangan limbah dan mendorong daurulang nutrisi berkelanjutan di bidang pertanian. Penelitian ini bertujuan untuk mengevaluasiperbaikan dan peningkatan pertumbuhan bibit kelapa sawit melalui aplikasi POC berbahanlimbah pasar dengan dosis dan interval berbeda. Penelitian menggunakan Rancangan AcakKelompok Lengkap, yaitu dosis POC (0; 5; 10; 15 ml/l) dan interval aplikasi (6; 8; 10 hari).Parameter yang diamati meliputi pertambahan tinggi, diameter batang, jumlah daun, panjangdaun, dan lebar daun yang diukur secara berkala. Analisis data dilakukan menggunakanANOVA dan dilanjutkan dengan uji Tukey 5%. Hasil penelitian menunjukkan bahwa interaksidosis dan interval aplikasi POC memberikan pengaruh nyata terhadap seluruh parameterpertumbuhan bibit kelapa sawit pada fase pre-nursery. Setiap parameter memiliki perlakuanterbaik yang konsisten diperoleh pada kombinasi dosis 15 ml/l dengan interval aplikasi 10hari. Pada perlakuan ini, tinggi bibit mencapai 18,50 cm, diameter batang 2,45 cm, jumlah daun4,50 helai, lebar daun 3,70 cm, dan panjang daun 14,20 cm. Dosis POC 15 ml/l dengan intervalaplikasi 10 hari merupakan kombinasi perlakuan paling efektif dalam meningkatkan seluruhparameter pertumbuhan bibit kelapa sawit di pre-nursery.
Co-Authors Azmi, Yudia Dewi Andri Yani Febrianti Febrianti Fradilla Swandi Mardiani Putri