ROSFIANSYAH, ROSFIANSYAH
Universitas Mulawarman

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The role of plant parasitic nematodes on productivity reduction of banana and tomato in East Kalimantan, Indonesia SUYADI, SUYADI; ROSFIANSYAH, ROSFIANSYAH
Asian Journal of Agriculture Vol 1 No 01 (2017)
Publisher : Society for Indonesian Biodiversity & Universitas Mulawarman, Samarinda, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g010108

Abstract

Suyadi, Rosfiansyah. 2017. The role of plant parasitic nematodes on productivity reduction of banana and tomato in East Kalimantan, Indonesia. Asian J Agric 1: xxxx. Plant parasitic nematode is one of the most limiting factor of agricultural ecosystem productivity in East Kalimantan, but their occurrence in agricultural field as a crop’s pest generally undistinguished, due to their microscopic size and their existence wrapped in the roots or soil particles. However, plant parasitic nematodes might cause yield loss up to 75%, without showed any disease symptom on crop morphologically. Perennial crop and annual crop under intensive cultivation usually experience high yield loss due to plant parasitic nematodes, if crop protection management was not implemented properly. This research aimed to determine the role of plant parasitic nematodes in reducing crop’s productivity in East Kalimantan, in relation to agricultural practices implemented by farmers. A descriptive research and comparative analyses were implemented to determine the role of plant parasitic nematode on yield reduction of banana and tomato as the indicator of productivity. Based on the field observation related to pest management in East Kalimantan, it was determined that plant parasitic nematode existence was neglected by farmers and no significant effort was implemented to control plant parasitic nematodes population. Therefore, low productivity of agricultural ecosystem in East Kalimantan was reported by Statistical Office, and it was not only caused by soil fertility problems, in some crops it was also the impact of population outbreak of plant parasitic nematodes. The first ranking three genera of plant parasite nematodes observed in East Kalimantan were Meloidogyne, Radhopholus, and Rotylenchulus, respectively. Meloidogyne and Rotylenchulus were major pest on vegetables, and caused yield loss >50% on tomato. While, genus of Radhopholus was the major pest on banana, and caused yield loss >75% on banana.
Dampak Sedimentasi dan Sifat Tanah terhadap Keberadaan Nematoda Entomopatogendalam Rizosfer Kelapa Sawit di Kabupaten Kutai Kartanegara, Provinsi Kalimantan Timur Suyadi Suyadi; Andi Suryadi; Rosfiansyah Rosfiansyah; Sofian Sofian
Jurnal Agroekoteknologi Tropika Lembab Vol 3, No 2 (2021): Agroekoteknologi Tropika Lembab Volume 3 Nomor 2 Februari 2021
Publisher : Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35941/jatl.3.2.2021.5243.127-136

Abstract

Nematoda Entomopatogen (NEP) umumnya hidup bebas di dalam tanah. Tujuan penelitian ini adalah untuk mengetahui pengaruh sedimentasi akibat kegiatan penambangan batubara serta sifat tanah terhadap keberadaan genera NEP pada rhizosfer kelapa sawit di Kabupaten Kutai Kartanegara. Keberadaan NEP yang diamati berdasarkan pengambilan sepuluh kelompok sampel tanah (KST) pada areal 1 yang terdampak sedimentasi sekitar 2 cm, dan areal 2 yang terdampak sedimentasi sekitar 7 cm, dengan susunan KTS sebagai berikut, yaitu 1) KST dari areal 1 dan areal 2 tanpa dampak sedimentasi sebagai kontrol (KST1, KST2, KST3, dan KST4), 2) KST dari areal terdampak sedimentasi dengan kedalaman sekitar 2 cm (KST5, KST6, dan KST7), dan 3) KST dari areal terdampak sedimentasi dengan kedalaman sekitar 7 cm (KST8, KST9, dan KST10). Variabel yang diukur dalam penelitian ini adalah populasi NEP, sifat tanah, dan keberadaan mikroba tanah. Hasil penelitian menunjukkan terjadinya penurunan populasi NEP hinggapada level tidak terdeteksi di bawah lapisan sedimentasi 7 cm. Keberadaan NEP ditemukan pada lapisan sedimen kedua area, pada tanah kedalaman 0-30 cm di bawah lapisan sedimen 2 cm, dan pada tanah kedalaman 0-30 cm di kedua areal control. Ada dua genera NEP yang ditemukan di wilayah studi, yaitu:Steinernema sp. and Heterorhabditis sp.
Microfuel Inventory And Its Potential As Biofertilizer And Agensia Biological Controller On The Land Of Coal Mine Reclamation In Samarinda Rosfiansyah, Sopialena, Surya Sila .
Agrifor : Jurnal Ilmu Pertanian dan Kehutanan Vol 16, No 2 (2017): Oktober
Publisher : Universitas 17 Agustus 1945 Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31293/af.v16i2.2909

Abstract

The fungus in the soil naturally has a role to maintain soil function, to control its productivity and play a role in the biological control of plant-disturbing organisms. This study aims to determine the diversity of micro fungi as well as their potential as biofertilizer and biological control agents in the reclamation field of coal mines in Samarinda. This research is a descriptive research. The research was conducted in the reclamation field of coal mine of PT. CEM (Cahaya Energi Mandiri) Tanah Datar Samarinda. The research results show that there are 6 genus on 9 month reclamation field ie Fusarium, Massarina, Humicola, Rhizoctonia, Blastomyces, and Pythium. 15 genus of fungi on the 24-month reclamation field ie Mortierella, Humicola, Penicillium, Pythium, Aspergillus, Trichoderma, Blastomyces, Fusarium, Anixiella Verticillium, Gliocladium, Entomophaga, Metarhizium, Mucor, Chloridium. All genera have a role in the soil biofertilizer process, except for the unknown genus Anixiella. There are 3 genera that have the role as an insect pathogen that can be utilized in plant pest control Fusarium, Entomophaga and Metarhizium. There are 2 genera that have antagonistic role in biological control of plant disease pathogen namely Gliocladium and Trichoderma.