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All Journal AGROEKOTEKNOLOGI Sistemasi: Jurnal Sistem Informasi
Lisnawita Lisnawita
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Agriculture, Biological Sciences & Forestry Computer Science & IT Electrical & Electronics Engineering

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Potensi Bakteri Endofit dalam Meningkatkan Pertumbuhan Tanaman Tembakau yang Terinfeksi Nematoda Puru Akar (Meloidogyne spp.) R Surya Murthi; Lisnawita Lisnawita; Syahrial Oemry
Jurnal Agroekoteknologi Vol 4, No 1 (2016)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (215.6 KB) | DOI: 10.32734/jaet.v4i1.12326

Abstract

Potensi Bakteri Endofit dalam Meningkatkan Pertumbuhan Tanaman Tembakau yang Terinfeksi Nematoda  Puru Akar (Meloidogyne spp.). Nematoda puru akar (Meloidogyne spp.) pada tanaman tembakau merupakan penyakit penting yang dihadapi oleh perkebunan tembakau di Indonesia. Beberapa teknik pengendalian telah dilakukan, seperti penggunaan nematisida, kultur teknis dan penambahan bahan organik namun belum efektif mengendalikan patogen ini. Pengendalian biologi dengan bakteri endofit merupakan alternatif pengendalian Meloidogyne spp. Penelitian  ini bertujuan untuk mendapatkan bakteri endofit asal akar nilam meningkatkan pertumbuhan tanaman tembakau yang terinfeksi nematoda  puru akar (Meloidogyne spp.). Penelitian ini dilaksanakan di Laboratorium Penyakit Tumbuhan Fakultas Pertanian Universitas Sumatera Utara pada  bulan Juli – Desember 2014. Penelitian ini menggunakan Rancangan Acak Lengkap nonfaktorial dengan perlakuan pemberian beberapa jenis bakteri endofit yaitu: Kontrol (diaplikasikan nematoda 500ekor/pot), Bacillus spp.1, Pseudomonas spp. dan Bacillus spp.2. Hasil penelitian menunjukan laju pertumbuhan dan pertambahan jumlah daun terbaik terdapat pada perlakuan Pseudomonas spp. sedangkan berat basah dan kering akar tertinggi terdapat pada tanaman yang diaplikasikan Bacillus spp 1. Kata kunci : Bacillus spp., Pseudomonas spp., Meloidogyne spp., tembakau.
Analysis of Students to Follow Computer Extracurricular Activities using Fuzzy Logic Method Loneli Costaner; Guntoro Guntoro; Lisnawita Lisnawita
Sistemasi: Jurnal Sistem Informasi Vol 12, No 1 (2023): Sistemasi: Jurnal Sistem Informasi
Publisher : Program Studi Sistem Informasi Fakultas Teknik dan Ilmu Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32520/stmsi.v12i1.2211

Abstract

An educational institution will carry out activities for the development of human resources. In improving good human resources, additional lessons are needed to increase students' skills, especially in the computer field. The current obstacle is that schools have difficulty measuring students' interest in participating in computer extracurricular, as a result the development of computer hardware needs is hampered. This study aims to provide knowledge to schools to find out what percentage of students are interested in learning computers. The method used is a Likert scale and fuzzy logic by measuring four variables of student feelings, student attention, student interest and student involvement. Measurement of student interest by compiling a questionnaire filled in by students and students there are 14 questions with a choice of each question 5 answer choices, obtained an average weight on the Likert scale variable feeling 74.0%, attention 76.5%, interest 75.7% and the involvement of 78.0% of the weight was tested with fuzzy inference with a firmness value of 38, where the value is included in the output domain not interested. By measuring student interest, it is hoped that it will be useful for institutions to consider implementing computer extracurricular.
Co-Authors Guntoro Guntoro Guntoro Guntoro Loneli Costaner R Surya Murthi Syahrial Oemry