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All Journal AGRISAINTIFIKA Jurnal Ilmu-ilmu Pertanian Jurnal Agro Industri Perkebunan
Febrianni, Astri
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Materials Science & Nanotechnology

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Insidensi dan Keparahan Penyakit Bercak Daun Disebabkan oleh Curvularia sp. pada Pembibitan Kelapa Sawit di Kabupaten Banyuasin Sumatera Selatan Cameron, Rizky Randal; Febrianni, Astri; Yusticia, Stenia Ruski
Jurnal Agro Industri Perkebunan Vol. 12 No. 1 (2024)
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jaip.v12i1.3303

Abstract

In Indonesia, there has been a notable expansion in the area and productivity of oil palm plantations.  Oil palm is among the top seven plantation commodities prioritized for development.  High-quality seedlings are essential for optimal plant production.  However, several factors can impede oil palm productivity, including diseases that affect oil palm seedlings.  One such disease is brown spot disease caused by the fungus Curvularia sp.  The objective of this study was to determine the incidence and severity of brown spot disease in oil palm seedlings.  The research was conducted from May 2023 to June 2023 in Banyuasin Regency using a purposive sampling survey method.  Thirteen seedling locations were selected based on their adherence to good seedling criteria. Seedlings aged 6-12 months were used in this study.  At each location, five plots were surveyed, with 30-32 seedlings sampled per plot.  Supporting data, including fertilization, watering, and herbicide and fungicide application, were tabulated to supplement the research findings.  Results indicated that brown spot disease can affect plants as young as two weeks old.  Initial symptoms include brown spots that eventually widen and merge with other spots.  The average incidence of the disease was 93.29 % (± 7.89), with an average severity of 47.13% (± 13.23).
ANALYSIS OF THRESHOLD INTENSITY OF LEAF SPOT INFESTATION CAUSED BY CURVULARIA SPP. ON OIL PALM SEEDLINGS Cameron, Rizky Randal; Yusticia, Stenia Ruski; Afriani, Siti Rakhmi; Febrianni, Astri
Agrisaintifika: Jurnal Ilmu-Ilmu Pertanian Vol. 9 No. 3 (2025): Agrisaintifika
Publisher : Universitas Veteran Bangun Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32585/ags.v9i3.6657

Abstract

Oil palm is a very important crop economically for Indonesia. However, in oil palm nurseries, there is a disease that can interfere with the growth of oil palm seedlings, namely brown spot disease caused by the pathogen Curvularia sp. The purpose of this study was to determine the potential inhibition of oil palm seedling growth by Curvularia at various scoring levels of the intensity of attack of this disease. The method used in this study was a group randomized design with 6 scoring levels as treatments and 5 replicates at 3, 4, 5 and 6 months of age and 10 replicates at 7, 8, 9 and 10 months of age. The scoring levels were grouped into 1 = 0%, 2 = 1-20%, 3 = 20.1-40%, 4 = 40.1-60%, 5 = 60.1-80% and 6 = >80%. The observation parameters of this study were diameter, plant height, and number of leaves. Data were analyzed using anova and further tests using the BNJ test. The results showed the occurrence of growth inhibition at each age of oil palm seedlings both in diameter, height, and number of leaves of oil palm seedlings. However, not all levels of attack showed significant differences. The highest level of inhibition of Curvularia attack at the age of 10 months.
Co-Authors RIZKY RANDAL CAMERON, RIZKY RANDAL Siti Rakhmi Afriani Yusticia, Stenia Ruski