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All Journal Agrifor : Jurnal Ilmu Pertanian dan Kehutanan Jurnal Perlindungan Tanaman Indonesia Jurnal Penelitian Pertanian Terapan Jurnal AGROSAINS dan TEKNOLOGI Jurnal Agro Industri Perkebunan
Albertus Sudirman
Politeknik Negeri Lampung
Agriculture, Biological Sciences & Forestry

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Pengendalian Ulatgrayak (Spodoptera litura F.) dengan Ekstrak Ubi Gadung dan Ekstrak Buah Maja I Wayan Darmanto; Dedi Supriyatdi; Albertus Sudirman
Jurnal Agro Industri Perkebunan Volume 7 No. 1, Mei 2019
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jaip.v7i1.1052

Abstract

Armyworm (Spodoptera litura F.) is one of the important polyphag leaf pests that attacks almost all crops. The objective of this study was to determine the effect of various concentrations of bioinsecticide made of dioscorea tuber and aegle fruit extract on larval mortality. The research was conducted at the crop laboratory, Lampung State Polytechnic since October 2017 until December 2017. The experimental design is a completely randomized design with six treatments and four and replications. The parameters observed is mortality of armyworm larvae, which would then be analyzed using fingerprint of different varieties. That result showed that dioscorea tuber and aegle fruit extract has affected on larval mortality armyworm. Pure (100%) dioscorin tuber extract exhibited the highest larval mortality.
Uji Efektivitas Ekstrak Kulit Manggis (Garcinia mangostana L.) terhadap Fusarium oxysporum pada Kecambah Kelapa Sawit Tyas Dwi Chintya; Albertus Sudirman; Ersan Ersan
Jurnal Agro Industri Perkebunan Volume 8 No. 1, Mei 2020
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jaip.v8i1.1390

Abstract

Fusarium oxysporum is a pathogen that causes wilt in oil palm and can cause oil palm sprout decay. The study aimed to determine the effectivity of mangosteen peel extract (Garcinia mangostana L.) in inhibiting the growth of Fusarium oxysporum in vitro and in vivo. The research was conducted in November 2017 to June 2018 at the Politeknik Negeri Lampung. The method used was a completely randomized design (CRD) consisting of 5 treatments, namely the concentration of mangosteen peel extract 0% (control), 15%, 30%, 45%,and 60%. Data were analyzed using analysis of variance (ANOVA) and further tests of mean values using the LSD test. The results showed that mangosteen peel extract affected the percentage of inhibitory zone extract in Fusarium oxysporum in vitro at concentrations of 15%, 30%, and 45% respectively at 25,92%, 29,06% and 35,95%. The treatment of mangosteen peel extract also affected the percentage of disease incidence and number of leaves in in vivo testing.
Pengendalian Hayati Penyakit Layu Fusarium Pisang (Fusarium oxysporum f.sp. cubense) dengan Trichoderma sp. Albertus Sudirman; Christanti Sumardiyono; Siti Muslimah Widyastuti
Jurnal Perlindungan Tanaman Indonesia Vol 17, No 1 (2011)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (125.883 KB) | DOI: 10.22146/jpti.9396

Abstract

The aim of this research was to study the inhibiting ability of Trichoderma sp. to control fusarium wilt of banana in greenhouse condition. The experiments consisted of the antagonism test between Trichoderma sp. and Fusarium oxysporum f.sp. cubense (Foc) in vitro using dual culture method and glass house experiment which was arranged in 3×3 Factorial Complete Randomized Design. First factor of the latter experiment was the dose of Trichoderma sp. culture (0, 25, and 50 g per polybag), second factor was time of Trichoderma culture application (2 weeks before Foc inoculation, at same time with Foc inoculation and 2 weeks after Foc inoculation). Trichoderma sp. was cultured in mixed rice brand and chaff medium. The disease intensity was observed with scoring system of wilting leaves (0–4). The results showed that Trichoderma sp. was antagonistic against Foc in vitro and inhibited 86% of Foc colony development. Mechanism of antagonism between Trichoderma sp. and Foc was hyperparasitism. Trichoderma hyphae coiled around Foc hyphae. Lysis of Foc hyphae was occurred at the attached site of Trichoderma hyphae on Foc hyphae. Added banana seedling with Trichoderma sp. Culture reduced disease intensity of Fusarium wilt. Suggested dose of Trichoderma culture application in glass house was 25 g/polybag, given at the same time with Foc inoculation.
Pengaruh Ekstrak Buah Mengkudu Terhadap Mortalitas Ulatgrayak (Spodoptera litura F.) endhy Nura Prassetia Mega; Dedi Supriyatdi; Albertus Sudirman
Jurnal AGROSAINS dan TEKNOLOGI Vol 4, No 2 (2019)
Publisher : Fakultas Pertanian - UMJ

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (175.616 KB) | DOI: 10.24853/jat.4.2.95-101

Abstract

Ulatgrayak (Spodoptera litura F., Lepidoptera, Noctuidae) adalah hama daun yang menghambat tanaman karena mengandung polifag. Kisaran tanaman yang menyebabkan S. litura sebagai hama utama di berbagai jenis tanaman seperti perkebunan, buah, sayuran, tanaman pangan. Rentang tembakau, kol, ubi jalar, kentang, kedelai, dan lainnya. Serangan S. litura dengan menempelkan daun sampai epidermis tipis keluar pada permukaan daun dan tulang daun. Tumbuhan yang dapat dijadikan bahan baku insektisida nabati adalah buah noni matang (Morinda citrifolia L.). Insektisida adalah campuran kimia atau kimia yang digunakan untuk mengendalikan hama tanaman (OPT). Insektisida digunakan sebagai cara untuk mengendalikan hama dan menyelamatkan tanaman. Untuk mengatasinya, diperlukan alternatif lain untuk menggunakan insektisida sintetis, dengan mempertimbangkan beberapa efek negatif lingkungan. Salah satu efek negatif lain dari insektisida sintetik adalah bahwa akan ada resistensi terhadap hama S. litura terhadap insektisida. Tujuan dari penelitian ini adalah untuk mempelajari potensi besar buah noni sebagai insektisida tanaman dalam pergerakan hama S. litura dan alat ukur terbaik dari insektisida nabati ini. Penelitian dilakukan di Laboratorium Tumbuhan, Departemen Budidaya Tanaman, Politeknik Negeri Lampung, pada Oktober 2018 hingga Desember 2018. Desain penelitian menggunakan Rancangan Acak Lengkap (RAL) dengan 4 ulangan. Bahan baku yang digunakan adalah buah noni matang. Insektisida nabati dibuat dari ekstrak buah mengkudu dalam mengendalikan hama S. litura dan konsentrasi terbaik terjadi pada P1 dengan konsentrasi ekstrak 100%.
Aplikasi Pupuk KNO3 dan NPK Pada Pertumbuhan Bibit Kelapa Sawit (Elaeis Guineensis Jacq.) Double Tone Di Main-Nursery. Bambang Utoyo; Kresna Shifa Usodri; Yan Sukmawan; Ridho Esa Putra Arahman; Hamdani Hamdani; Albertus Sudirman
Jurnal Penelitian Pertanian Terapan Vol 22 No 3 (2022)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v22i3.2600

Abstract

One of the efforts that can be made to optimize the growth of double tone oil palm seedlings is to apply an appropriate combination of fertilization. The purpose of this study was to obtain the best KNO3 concentration and dose of NPK fertilizer in optimizing the growth of double tone oil palm seedlings in the main nursery. The research was carried out from December to July 2021. The research location was in the Oil Palm Seedling Business Unit of the Lampung State Polytechnic, Rajabasa, Bandar Lampung. This research was conducted using a factorial randomized block design (RAK) which was repeated 5 times. The first factor is the concentration of KNO3 fertilizer which consists of 3 levels, namely 0%, 2%, and 4%. The second factor is the dose of Compound NPK fertilizer which consists of 2 levels, namely 2.5 g and 5 g. Observations were made on the variables of seedling height, seedling diameter, leaf greenness, number of midribs and leaf area. Observational data were analyzed by F test at level =5%. If the results of the analysis of variance are significant, then it is continued with the smallest significant difference test (BNT) at the level of =5%. The results showed that the application of 4% KNO3 with a dose of 5 g compound NPK fertilizer showed the best results in optimizing the growth of double tone oil palm seedlings in the main nursery on all observation variables.
IDENTIFIKASI GULMA DI PERKEBUNAN KELAPA SAWIT RAKYAT TANAMAN BELUM MENGHASILKAN (TBM) Resti Puspa Kartika Sari; Hidayat Pujisiswanto; Albertus Sudirman
Agrifor : Jurnal Ilmu Pertanian dan Kehutanan Vol 22, No 2 (2023): Oktober 2023
Publisher : Universitas 17 Agustus 1945 Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31293/agrifor.v22i2.6628

Abstract

Identifikasi Gulma Di Perkebunan Kelapa Sawit Rakyat Tanaman Belum Menghasilkan. Tumbuhnya gulma di perkebunan kelapa sawit dapat menurunkan produktivitas kelapa sawit. Gulma bersaing dengan tanaman kelapa sawit dalam memperebutkan sarana tumbuh. Pengendalian gulma harus dilakukan berdasarkan rekomendasi yang tepat sesuai dengan gulma sasaran. Penelitian ini bertujuan untuk mengidentifikasi jenis-jenis gulma yang ditemukan di kebun kelapa sawit tanaman belum menghasilkan. Penelitian dilakukan pada bulan Juni tahun 2022, di kebun kelapa sawit rakyat, Desa Karang Anyar, Kabupaten Lampung Selatan. Penelitian menggunakan metode deskriptif secara purposive sampling pada piringan tanaman kelapa sawit. Hasil identifikasi gulma diperoleh 4 famili yang terdiri dari 10 spesies yaitu Asystasia gangetica, Praxelis clematidea, Mikania micrantha, Synedrella nodiflora, Borreria alata, Axonopus compressus, Paspalum conjugatum, Cyperus iria, dan Cyperus esculentus. Namun, jumlah gulma yang paling banyak ditemukan yaitu A. gangetica.
Co-Authors Bambang Utoyo Christanti Sumardiyono Dedi Supriyatdi endhy Nura Prassetia Mega Ersan Ersan Hamdani Hamdani Hidayat Pujisiswanto I Wayan Darmanto Kresna Shifa Usodri RESTI PUSPA KARTIKA SARI Ridho Esa Putra Arahman Siti Muslimah Widyastuti Tyas Dwi Chintya Yan Sukmawan