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All Journal Agrikultura Bioscientist : Jurnal Ilmiah Biologi Anjoro : International Journal of Agriculture and Business Journal Of Human And Education (JAHE)
Mendes, Johana
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Education Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Social Sciences Other

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Respon Pertumbuhan dan Tingkat Serangan Hama Pengerek Batang pada Berbagai Varietas Padi Sawah (Oryza sativa L ) yang Ditanam di Lahan Bukaan Baru Kabupaten Merauke, Provinsi Papua Sembiring, Jefri; Ofre, Oktovianus; Mendes, Johana; Rante, Novianti
Agrikultura Vol 34, No 1 (2023): April, 2023
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/agrikultura.v34i1.41614

Abstract

Tujuan penelitian ini adalah mengetahui respon pertumbuhan enam varietas tanaman padi (Oryza sativa L.) terhadap serangan pengerek batang. Penelitian ini dilaksanakan di lahan bukaan baru Kampung Bokem, Distrik Merauke, Kabupaten Merauke, Propinsi Papua Selatan pada bulan Maret Sampai Juni 2021. Penelitian dilakukan dengan menggunakan Rancangan Acak Kelompok (RAK) terdiri atas 6 varietas dengan 3 ulangan. Varietas yang digunakan, yaitu varietas Nutrizinc, Mamberamo, Inpari 42, Inpara 2, Inpari 32 dan Inpari Sidenuk.  Masing masing perlakuan diulang sebanyak 3 kali ulangan sehingga akan diperoleh 18 plot percobaan. Luas plot pengamatan 3 x 3 m2 dengan jarak tanam 20 x 20 cm sehingga dalam plot terdiri dari 50 tanaman.  Hasil penelitian menunjukkan bahwa terdapat variasi tinggi pada masing-masing varietas sebagai berikut: varietas Chidanu (78,4 cm), varietas padi Inpara (74,2 cm), varietas Nutrizinc (70,7 cm), varietas Mambramo (66,3 cm), varietas Inpari 42 (65,1 cm) dan varietas Inpari 32 (59,0 cm). Demikian pula dengan jumlah anakan yaitu varietas Inpara 2 (12 anakan), varietas Inpari Chidanu (11 anakan), varietas Inpari 32 (10 anakan), varietas Mambramo (10 anakan), dan varietas Inpari 42 (9,0 anakan).  Jumlah anakan terserang serangga pengerek batang berturut-turut adalah varietas Inpara 2 (9 anakan), varietas Inpari 42 (7,0 anakan), varietas Inpari Chidanu (5,6 anakan), varietas Inpari 32 (5,5 anakan), varietas Nutrizinc (4,4 anakan) dan varietas Mambramo (4,3 anakan). Gabah paling paling banyak terdapat pada varietas Inpara 2 (186,2 gabah) sedangkan terendah pada varietas Nitrizinc (119,4 gabah). Respons enam varietas padi yang diteliti memiliki tingkat kerentanan yang berbeda-beda terhadap serangan penggerek batang (Scirpophaga sp). Varietas Nutrizinc dan Mambramo menunjukkan rata-rata tingkat serangan terendah terhadap serangan hama pengerek batang pada lahan bukaan baru (4,3 anakan). Jenis varietas pada lahan bukaan baru menyebabkan pertumbuhan dan produksi tanaman padi berbeda. Produksi tertinggi adalah varietas Nutrizinc (6,67 ton/ha).
Effectiveness of Bacillus thuringiensis (Bt) application in controlling mortality of Spodoptera litura on rice plants (Oryza sativa L.) Sembiring, Jefri; Mendes, Johana; Kusumah, Rangga; Susanti, Diana Sri; Anwar, Anwar; Sarijan, Abdullah; Yusuf, Mani
Anjoro: International Journal of Agriculture and Business Vol 5 No 1 (2024): Anjoro
Publisher : Agribusiness Department, Agriculture and Forestry Faculty, Universitas Sulawesi Barat, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/anjoro.v5i1.3504

Abstract

Rice (Oryza sativa L.) is the primary commodity for the Indonesian people because most of the Indonesian population depends on rice. The armyworm pests Spodoptera litura causes irregular holes in the leaves, thus disrupting the photosynthesis process and reducing rice production, so it is necessary to treat the pest. Bacillus thuringiensis is a pathogenic bacterium for insects, such as S. litura. This study aimed to look at the effectiveness of B. thuringiensis on the mortality of S. litura on a laboratory and field scale. The research was conducted in the Agrotechnology Laboratory, Faculty of Agriculture, Musamus University. The research design was a complete randomized design (RAL). The research study was conducted on five treatment doses of B. thuringiensis, which were 20 g/500 ml of water; 40g/500 ml of water; 60 g/500 ml of water; 80 g/500 ml of water; 100 g/500 ml of water. Each treatment was repeated five times. The results showed that, applying B. thuringiensis can significantly decrease the population and intensity of S. litura. The highest mortality rate in laboratory trials was observed at a dose of 100 grams/500 ml of water, with 50 dead individuals. In contrast, the lowest mortality rate was recorded at a dose of 20 gram of material/500ml of water, with only 12 death S. litura larvae. In field testing, the best dose was 50 gram/14 liters of water, and it caused the death of 50 S. litura larvae. Spraying B. thuringiensis on rice plants can reduce the population and intensity of S. litura.
Aplikasi Bakteri Bacillus Thuringiensis Dan Petrogenol Pada Tanaman Buah Di Kampung Sukamaju Distrik Malind Kabupaten Merauke Papua Selatan sembiring, jefri; Pongkendek, Jesi Jecsen; Kusumah, Rangga; Mendes, Johana; Anwar, Anwar; Yusuf, Mani; Sarijan, Abdullah
Journal Of Human And Education (JAHE) Vol. 4 No. 5 (2024): Journal of Human And Education (JAHE)
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jh.v4i5.1515

Abstract

Integrated Pest Management (IPM) is a pest population control system that uses all control methods to reduce and maintain populations below the level of economic damage. Pest and disease attacks on fruit plants become obstacles, making production unstable. In addition, the increasing pest population is followed by increasing production costs, which impact decreasing farmer income. Fruit farmers who have just started cultivating fruit plants have complex problems facing pest and disease attacks, especially Fruit Flies and Spodoptera sp. The purpose of this service is to provide information on IPM technology in controlling pests and diseases in fruit plants, especially the use of Bacillus thuringiensis Microorganisms and petrogenol in the Sukamaju Village farmer group, Malind District, Merauke Regency to control pests and diseases. The community service approach involves stages of introduction/socialization, training, and technology implementation, which involves active participation from group members. The results of this service are expected to increase farmers' knowledge, attitudes, and actions regarding the use of insecticides against plant pests. The evaluation results show that knowledge about natural enemies and using biological insecticides and traps as a reference for integrated pest control (IPM) has started to improve. In addition, the community can already use environmentally friendly technology, namely Bacillus thuringiensis and petrogenol. It is hoped that increased knowledge will be followed by an increase in the attitudes and actions of farmers in controlling pests and plant diseases, including the use of pesticides that are wiser and more environmentally friendly Keywords: Bacillus thuringiensis, Fruit Fly, Merauke, Petrogenol, Spodoptera sp
Ketahanan Varietas Padi terhadap Hama Penggerek Batang (Scirpophaga sp.) di Kampung Telaga Sari Kabupaten Merauke Sembiring, Jefri; Wandikbo, Roni; Kusuma, Rangga; Mendes, Johana
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i1.11089

Abstract

The rice stem borer (Scirpophaga sp.) is a significant pest of rice plants, causing substantial yield losses. This study aimed to assess the growth response of seven rice varieties to stem borer (Scirpophaga sp.) infestation. The research was conducted in Kampung Telaga Sari, Kurik District, Merauke Regency, from October 2022 to January 2023. The experiment followed a Randomized Complete Block Design (RCBD) with seven varieties and three replications per trial. The varieties tested were Inpari 32, Inpari 42, Cakrabuana, Siam-siam, CL 220, Sertani, and Mekongga. Each treatment was replicated three times, resulting in 21 experimental plots, each measuring 3 x 3 m² with a planting distance of 20 x 20 cm, comprising 50 plants per plot. The research findings indicated significant differences in stem borer damage intensity at the 0.01 level of significance. The highest average attack intensity was observed in the Inpari 32 variety (5.44%), while the lowest average attack intensity was found in the Cakrabuana variety (2%).
Perkembangan Populasi Hama Utama pada Tanaman Padi di Kabupaten Merauke Papua Selatan Sembiring, Jefri; Mendes, Johana; Kusumah, Rangga; Anwar, Anwar; Yusuf, Mani; Susanti, Diana Sri
Agrikultura Vol 37, No 1 (2026): April, 2026
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/agrikultura.v37i1.67859

Abstract

Perkembangan populasi hama padi dipengaruhi oleh kondisi lingkungan, terutama suhu, kelembapan, dan ketersediaan tanaman inang. Penelitian ini bertujuan untuk menganalisis dinamika populasi hama utama tanaman padi berdasarkan umur tanaman dan musim tanam di Kabupaten Merauke. Penelitian dilaksanakan pada lahan sawah dataran rendah di Distrik Merauke, Semangga, Tanah Miring, dan Kurik yang secara geografis berada pada 7°–8° LS dan 140°–141° BT dengan ketinggian 0–10 m dpl. Penelitian dilakukan pada bulan Februari–September 2023 yang mencakup dua musim tanam. Metode yang digunakan adalah survei dengan pendekatan observasi lapangan menggunakan desain longitudinal (repeated measures). Pengambilan sampel dilakukan secara purposive dengan pendekatan cluster sampling pada empat Distrik. Pada setiap Distrik ditetapkan dua kampung, dan pada setiap kampung dipilih lima petak sawah (20 × 20 m) yang menggunakan varietas padi yang sama. Setiap petak dibagi menjadi lima subplot (2 × 2 m) secara diagonal sebagai unit pengamatan, sehingga total unit pengamatan sebanyak 200 subplot pada setiap waktu pengamatan. Hasil penelitian menunjukkan bahwa populasi hama berbeda nyata antar musim tanam dan umur tanaman, dengan populasi lebih tinggi pada musim tanam kedua. Hama dominan pada fase vegetatif adalah wereng batang coklat dan penggulung daun (28–42 HST), sedangkan pada fase generatif didominasi oleh penggerek batang dan walang sangit (56–70 HST). Wereng punggung putih Sogatella furcifera menunjukkan peningkatan populasi secara bertahap dari fase awal hingga generatif, dengan populasi tertinggi pada umur 56–70 HST dan lebih tinggi pada musim tanam kedua. Populasi wereng hijau cenderung menurun seiring bertambahnya umur tanaman, sedangkan populasi wereng batang coklat menunjukkan pola fluktuatif. Fase kritis tanaman terjadi pada umur 28–42 HST dan 56–70 HST pada setiap musim tanam.
Co-Authors Anwar Anwar Diana Sri Susanti Doga, Ikius Jefri Sembiring Kusuma, Rangga Kusumah, Rangga Mani Yusuf Ofre, Oktovianus Pongkendek, Jesi Jecsen Rante, Novianti Sarijan, Abdullah - Wandikbo, Roni