DEDEK KRISNA, NPM 2203100039 (2026) IDENTIFIKASI SERANGAN DAN PENGENDALIAN HAMA ULAT API (Setothosea asigna) PADA TANAMAN MENGHASILKAN KELAPA SAWIT DI PT. PERKEBUNAN NUSANTARA IV REGIONAL I AFDELING III KEBUN RANTAUPRAPAT. Skripsi thesis, Universitas Labuhanbatu.
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Abstract
Kelapa sawit merupakan komoditas strategis yang produktivitasnya sering terhambat oleh serangan hama defoliator, khususnya ulat api (Setothosea asigna). Serangan hama ini merusak jaringan fotosintetik daun dan dapat menurunkan produksi tandan buah segar (TBS) hingga 25–75%. Penelitian ini difokuskan pada area Tanaman Menghasilkan (TM) tahun tanam 2021 di PT. Perkebunan Nusantara IV Regional I Afdeling III Kebun Rantauprapat yang rentan terhadap serangan tersebut. Penelitian ini bertujuan untuk (1) mengidentifikasi dan menghitung tingkat intensitas serangan ulat api, (2) mendeskripsikan siklus hidup hama tersebut, serta (3) menentukan metode pengendalian yang paling efektif dan efisien untuk menekan populasinya di lokasi penelitian. Penelitian menggunakan metode analisis deskriptif kualitatif dan pendekatan kuantitatif dengan Rancangan Acak Lengkap (RAL) faktorial. Lokasi penelitian berada di Blok H04E (1.511 pohon) dan Blok J07E (2.732 pohon) dengan pengambilan sampel pada 40 pohon per blok. Pengendalian diuji menggunakan teknik fogging (pengasapan) dengan insektisida berbahan aktif Matarin (Lamda Sihalotrin 50EC) dosis 500 cc/Ha dan Decis/Emulgator X-Ec dosis 100 cc/Ha. Parameter yang diamati meliputi jumlah hama dan tingkat penurunan intensitas serangan setelah aplikasi. Hasil awal menunjukkan keberadaan ulat api di kedua blok sampel, dengan 50 hama ditemukan di blok H04E dan 85 hama di blok J07E. Pengendalian secara kimiawi dilakukan karena populasi mencapai ambang kritis (5–10 ekor per pelepah). Teknik fogging dinilai lebih efisien dibandingkan penyemprotan manual karena mampu menjangkau area luas dengan cepat, menghemat tenaga, dan memberikan efek knockdown yang signifikan melalui penggunaan insektisida sistemik dan kontak. Identifikasi yang tepat terhadap siklus hidup dan intensitas serangan sangat krusial dalam menentukan strategi pengendalian. Metode fogging menggunakan kombinasi insektisida Matarin dan Decis terbukti menjadi solusi teknis yang efektif untuk menekan populasi ulat api serta menjaga stabilitas produksi TBS di PT. Perkebunan Nusantara IV Regional I Afdeling III Kebun Rantauprapat. Kata Kunci: Setothosea Asigna, Kelapa Sawit (Elaeis guineensis Jacq.), TM 2021, Pengendalian Kimiawi (Fogging) ================================================================== Oil palm is a strategic commodity whose productivity is often hampered by defoliator pest attacks, especially fireworms (Setothosea asigna). This pest attack damages the photosynthetic tissue of the leaves and can reduce the production of fresh fruit bunches (FFB) by 25–75%. This research is focused on the Producing Crops (TM) area for the 2021 planting year at PT. Nusantara IV Regional I Afdeling III Plantation Rantauprapat which is vulnerable to the attack. This study aims to (1) identify and calculate the intensity level of fire caterpillar attacks, (2) describe the life cycle of these pests, and (3) determine the most effective and efficient control methods to suppress their populations at the research site. The study used a qualitative descriptive analysis method and a quantitative approach with a factorial Complete Random Design (RAL). The research locations are in Block H04E (1,511 trees) and Block J07E (2,732 trees) with sampling on 40 trees per block. Control was tested using the fogging technique with an insecticide with the active ingredient Matarin (Lamda Syhalotrin 50EC) at a dose of 500 cc/Ha and Decis/Emulsifier X-Ec at a dose of 100 cc/Ha. The observed parameters included the number of pests and the rate of decrease in attack intensity after application. Preliminary results showed the presence of fireworms in both sample blocks, with 50 pests found in block H04E and 85 pests in block J07E. Chemical control is carried out because the population reaches a critical threshold (5–10 birds per frond). Fogging techniques are considered more efficient than manual spraying because they are able to reach large areas quickly, save energy, and provide a significant knockdown effect through the use of systemic and contact insecticides. Proper identification of the life cycle and intensity of the attack is crucial in determining control strategies. The fogging method using a combination of Matarin and Decis insecticides has proven to be an effective technical solution to suppress the fireworm population and maintain the stability of FFB production in PT. Nusantara IV Plantation Regional I Afdeling III Rantauprapat Plantation. Keywords: Setothosea Asigna, Palm Oil (Elaeis guineensis Jacq.), TM 2021, Chemical Control (Fogging)
| Item Type: | Thesis (Skripsi) |
|---|---|
| Uncontrolled Keywords: | Setothosea Asigna, Kelapa Sawit (Elaeis guineensis Jacq.), TM 2021, Pengendalian Kimiawi (Fogging)===============Setothosea Asigna, Palm Oil (Elaeis guineensis Jacq.), TM 2021, Chemical Control (Fogging) |
| Subjects: | Q Science > QK Botany S Agriculture > S Agriculture (General) S Agriculture > SB Plant culture |
| Divisions: | Fakultas Sains Dan Teknologi > Agroteknologi |
| Depositing User: | Unnamed user with email repository@ulb.ac.id |
| Date Deposited: | 20 Apr 2026 06:53 |
| Last Modified: | 20 Apr 2026 06:53 |
| URI: | http://repository.ulb.ac.id/id/eprint/2135 |
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