Article Per Year (5 Year)
p-Index From 2020 - 2025
0.408
P-Index
This Author published in this journals
All Journal Journal of Microbiology, Biotechnology and Conservation
Stella Petrunella Thei, Ruth
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Environmental Science Immunology & microbiology

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Keanekaragaman Artropoda Predator pada Tanaman Kentang (Solanum tuberosum L.) yang Diaplikasikan Pestisida Nabati Batang Tembakau dan Mimba Rizky, M. Muslihan; Sarjan, Muhammad; Stella Petrunella Thei, Ruth
Journal of Microbiology, Biotechnology and Conservation Vol. 1 No. 2 (2025): Journal of Microbiology, Biotechnology and Conservation (jMBC)
Publisher : Master’s Program in Biology, Faculty of Mathematics and Natural Sciences, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jmbc.v1i2.6111

Abstract

This study aims to determine the diversity, evenness, dominance and abundance of predatory arthropods in potato plants that have been applied with plant pesticides from tobacco stems and neem. This research was conducted in June-August 2022 on land owned by farmers in the Sembalun Bumbung area, Sembalun District. This study used an experimental method with field and laboratory experiments. The experimental design used in this study was RAK (Randomized Block Design) with 4 treatments (control, chemical pesticide abamectin, tobacco pesticide and neem pesticide) with 4 repetitions. Observations in the field were carried out 10 times with an interval of 1 time a week. The results of this study found 26 species of predatory arthropods belonging to 18 Families, 7 Orders and 2 Classes. The total number of individual predatory arthropods found was 662 individuals. The value of the diversity index (H') ranges from 1.59-1.88 which is classified as moderate. The value of the € evenness index ranges from 0.49-0.59 which is quite even. Dominance index values (D) ranged from 0.21-0.31 which indicated that no single species was too dominating. Abundance index (K) values ranged from 14,898-32,345 with the highest abundance in the neem plant pesticide treatment. The results of the ANOVA test analysis showed that all treatments had significant differences, so a BNJ (Honest Significant Difference) follow-up test was carried out with a level of 5%. Further test results showed no significant differences in diversity, evenness and dominance, but significantly different in abundance
Populasi Kutu Kebul (Bemisia sp.) dan Gejala Penyakit Virus pada Berbagai Varietas Kentang di Desa Sembalun Andalisa, Rani; Sarjan, Muhammad; Stella Petrunella Thei, Ruth
Journal of Microbiology, Biotechnology and Conservation Vol. 1 No. 3 (2025): Journal of Microbiology, Biotechnology and Conservation (jMBC)
Publisher : Master’s Program in Biology, Faculty of Mathematics and Natural Sciences, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jmbc.v1i3.7401

Abstract

This study aimed to determine the presence of whitefly pests (Bemisia sp.) and the symptoms of virus diseases caused by them on several potato varieties in Sembalun Village. The research was conducted from April to June 2021 in Sembalun Timba Gading Village, Sembalun District, East Lombok Regency, West Nusa Tenggara Province. The study used an experimental design with four potato varieties: Mc. Russet (A), Ranger Russet (B), Chitra (C), and Atlantik (D). Each treatment was replicated six times, resulting in a total of 24 experimental units. The results showed that the Mc. Russet and Ranger Russet varieties were more resistant to Bemisia sp. infestations in terms of both population and attack intensity. Whitefly populations fluctuated during the observation period, with the highest recorded at 49 days after planting (DAP) on the Chitra variety (2.08 insects/plant), and the lowest on Mc. Russet (1.33 insects/plant). The highest pest attack intensity was also observed at 49 DAP on the Chitra variety (1.0%), while the lowest was on Mc. Russet (0.4%). The highest incidence of yellow virus disease, transmitted by whiteflies, was recorded at 59 DAP on the Chitra variety (4.2%), and the lowest on the Ranger Russet variety (1.6%).
Co-Authors Andalisa, Rani Muhammad Sarjan Rizky, M. Muslihan