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Melatih Anggota Keltan Rambutan dan Keltan Sakato Kota Padang untuk Mengendalikan Wereng Batang Coklat (WBC) dengan Joint Predator Sandra Desiska; My Syahrawati; Arneti Arneti; Zurai Resti; Martinius Martinius; Haliatur Rahma; Eri Sulyanti; Tre Julia Nasral; Ryan Hidayat
Warta Pengabdian Andalas Vol 26 No 4.a (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jwa.26.4.a.222-228.2019

Abstract

The attacks of brown planthopper or BPH (Nilaparvata lugens) in West Sumatra have been recorded since 2012 and continued to increase throughout 2015-2017. Wolf spider (Pardosa pseudoannulata) and lady beetle (Verania lineata) are two predators that can be used as natural enemies. Some research reports that the wolf spider can consume the BPH as much as 5-15 individuals while lady beetles consume as much as 1-11 individuals per day. Training on the use of two predators was carried out in farmer group of Rambutan, Kelurahan Bungus Barat and farmer group of Sakato Kelurahan Lambung Bukit, Padang City. The training aimed to show to farmers the predation rate of both predators against ten individuals of BPH provided. The treatment consisted of the predation rate of both predators (1 individual of wolf spider, 1 individual of lady beetle, 1: 3 composition of the joint predator) in 3 replications. All wolf spiders, lady beetles and BPH used were collected from rice field in Pauh District, Padang City. Within one hour, joint predators in Rambutan were able to consume 53% of the BPH provided, while joint predators in Sakato were able to consume 43%. Some efforts from farmers are needed to protect and conserve the presence of two predators so that they can act as natural enemies in the field.
Antagonism of Endophytic Bacteria and the Consortium Against Culvularia oryzae Bugnic Zurai Resti; Martinius Martinius; Yenny Liswarni
Jurnal Proteksi Tanaman Vol 6 No 1 (2022): June 2022
Publisher : Plant Protection Departement, Faculty of Agriculture, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jpt.6.1.34-42.2022

Abstract

Endophytic bacteria have several advantages, including controlling plant pathogens and increasing plant growth. As a biological control, endophytic bacteria can suppress the development of plant pathogenic fungi. This study aimed to obtain endophytic bacteria and the consortium of endophytic bacteria that can inhibit the growth of C. oryzae. The study used a Completely Randomized Design (CRD) for studying the ability of endophytic bacteria using eight isolates: Bacillus sp HI, Bacillus sp SJI, B. cereus P14, B. cereus Se07, Serratia marcescens strain JB1E2, S. marces-cens strain JB3, S. marcescens strain ULG1E2 and S. marcescens strain ULG1E4, with three replications. For Studying the ability of endophytic bacteria consortium using six endophytic bacteria consortia and control with three replications. Observations were made on the inhibition growth of C. oryzae. The results showed that all endophytic bacteria and the endophytic bacteria consortium could inhibit C. oryzae, with inhibition of 58.50% – 75.00% and 38.00% – 77.00%. Endophytic bacteria which can significantly suppress the growth of C. oryzae were B. cereus Se07, Bacillus sp HI and Bacillus sp SJI with inhibition of 75.00%, 70.50%, and 70.00%. The endophytic bacteria consortium that had a high ability to suppress the growth of C. oryzae was the consortium of B (S. marcescens strain ULG1E4, S. marcescens strain JB1E3), D (Bacillus sp SJI, Bacillus sp HI, S. marcescenns JB1E3), and G (Bacillus sp SJI, S. marcescens strain ULG1E4), with inhibition of 77.00%, 72.33%, and 71.33%, respectively.
TINGKAT SERANGAN PENYAKIT KARAT DAUN PADA TANAMAN JAGUNG MANIS DI KECAMATAN KURANJI Albana, Hasan; Resti, Zurai
Agrifor : Jurnal Ilmu Pertanian dan Kehutanan Vol 23, No 2 (2024): Oktober 2024
Publisher : Universitas 17 Agustus 1945 Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31293/agrifor.v23i2.7527

Abstract

Jagung merupakan tanaman pangan penting di dunia selain gandum dan padi. Di Indonesia, jagung digunakan untuk pakan ternak, serta bahan dasar industri makanan dan minuman, tepung, minyak, dan lain-lain. Produktivitas tanaman jagung di Sumatera Barat selama 3 tahun terakhir cenderung menurun dan belum mencapai produktivitas optimalnya. Salah satu penyebab hal ini dapat terjadi adalah serangan penyakit tanaman seperti penyakit karat daun jagung yang disebabkan oleh Puccinia sp. Penelitian ini bertujuan untuk mengetahui tingkat serangan penyakit karat daun jagung di Kecamatan Kuranji, Kota Padang. Penelitian ini dilaksanakan di 2 kelurahan sentra tanaman jagung di Kecamatan Kuranji, Kota Padang dan di Laboratorium Fitopatologi, Fakultas Pertanian Universitas Andalas dari Bulan September-November 2023. Penelitian bersifat deskriptif dengan menggunakan metode survey dan penentuan lahan menggunakan metode Purposive Sampling. Parameter pengamatan penelitian ini adalah kondisi lahan tanaman, gejala penyakit karat daun jagung, identifikasi patogen, kejadian dan keparahan penyakit. Hasil penelitian menunjukkan bahwa kejadian penyakit mencapai 100% sedangkan tingkat keparahan mencapai 32,52%. Hal ini menunjukkan keparahan penyakit karat daun jagung di Kecamatan Kuranji termasuk kategori sedang.
Antagonistic Test of Endophytic Bacteria Against Fusarium oxysporum f.sp. cepae Causes of Moler Disease on Shallots Wihayyu, Afri; Resti, Zurai; Sulyanti, Eri; Darnetty, Darnetty; Khairul, Ujang
CROPSAVER Vol 7, No 1 (2024)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cropsaver.v7i1.54351

Abstract

Fusarium oxysporum f.sp. cepae (FOCe) is a pathogenic fungus causing moler disease in shallots. One method of controlling this disease is by using endophytic bacteria. Endophytic bacteria are bacteria that live in plant tissues without causing disease symptoms. This research aims to obtain the most effective endophytic bacteria in inhibiting the growth of the pathogenic fungus FOCe. The study employs a Completely Randomized Design (CRD) consisting of 8 treatments with 3 replications each. The treatments include Bacillus sp. HI, Bacillus sp. SJI, Bacillus cereus P14, Bacillus cereus Se07, Bacillus subtilis, Serratia marcescens JB1E3, Serratia marcescens ULG1E4, and control. Tests conducted include the antibiosis test of endophytic bacterial cells using the dual culture method and the secondary metabolite test using media poisoning method. The observed parameters include inhibition zone, effectiveness of secondary metabolites, fresh weight, and dry weight of the FOCe fungus. All endophytic bacteria were capable of inhibiting the growth of FOCe. The most effective endophytic bacteria in inhibiting the growth of FOCe were found to be Serratia marcescens ULG1E4 and Serratia marcescens JB1E3. In the antibiosis test of endophytic bacterial cells, Serratia marcescens ULG1E4 exhibited an inhibition zone of 64.44%, while Serratia marcescens JB1E3 showed an inhibition zone of 61.11%. In the secondary metabolite compound test, the effectiveness values for Serratia marcescens ULG1E4 and Serratia marcescens JB1E3 were 95.31% and 95.03%, respectively.
Endophytic Bacteria Consortia as Biocontrol Against Brown Spot Disease (Helminthosporium oryzae) and Growth Promotion in Rice Sulyanti, Eri; Resti, Zurai; Rahma, Haliatur; Darnetty, Darnetty; Khairul, Ujang; Nurhaliza, Nurhaliza; Oktaviani, Silvia
Jurnal Proteksi Tanaman (Journal of Plant Protection) Vol. 9 No. 1 (2025): June 2025
Publisher : Plant Protection Department, Faculty of Agriculture, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jpt.9.1.1-13.2025

Abstract

The brown spot disease (BSD) caused by Helminthosporium oryzae in rice can lead to yield losses of up to 45 %. Using endophytic bacterial consortia as a biological agent is one of the most potential control methods for resisting the disease. This study aimed to obtain an endophytic bacterial consortium with the best efficacy in controlling BSD and its ability to enhance rice plant growth. Statistical analysis in this study was made using Analysis of Variance (ANOVA) with Duncan’s Multiple Range Test (DMRT) in a randomized experimental design comprising five treatments with five replications. The treatments included: A (Serratia marcescens ULG1E4 + S. marcescens JB1E3), B (S. marcescens ULG1E4 + S. marcescens JB1E3 + Serratia marcescens JB1E2), C (Bacillus sp. SJI + Serratia marcescens ULG1E4), D (positive control), and E (negative control). Testing was conducted in planta, with the introduction of the bacterial consortium (10⁸ cells/mL) via seed and root soaking methods. Subsequently, the leaves of 30-day-old rice plants were inoculated with H. oryzae by spraying a conidial suspension of 10⁶ conidia/ml. Parameters observed included disease progression (incubation period, incidence, and severity), seedling growth metrics (height, leaf number, root length, fresh and dry biomass), and overall plant development (plant height, leaf number, and tiller count). The results demonstrated that the consortium of Serratia marcescens ULG1E4, Serratia marcescens JB1E3, and Serratia marcescens JB1E2 effectively controlled BSD, achieving a 53.69% reduction in disease severity and promoted rice plant growth, evidenced by a 30.63% increase in leaf number
The potential in consortium of endophytic bacteria for controlling sheath blight by Rhizoctonia solani Kuhn in rice plants Rahma, Haliatur; Resti, Zurai; Yusniwati, Yusniwati; Nasution, Fauzan Abid Hanif
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 25 No. 2 (2025): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLAN
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.225218-229

Abstract

Rhizoctonia solani Kühn is a pathogenic fungus that causes sheath blight disease in rice. One effective strategy for managing this disease is the use of biological control, particularly through consortia of endophytic bacteria. This study aimed to identify the most effective endophytic bacterial consortium for suppressing sheath blight severity while also enhancing rice growth and yield. A Completely Randomized Design (CRD) was aemployed with six treatments, three replications, and three experimental units per treatment. The treatments included four bacterial consortia composed of combinations of Bacillus thuringiensis LmD13, Ochrobactrum intermedium LmB1, and Stenotrophomonas maltophilia LmB35, along with positive and negative controls. The experiment involved treating rice seeds and soaking seedling roots with the bacterial consortia before transplanting. R. solani was inoculated onto the rice leaf sheaths 40 days after planting. The effectiveness of each consortium as a biocontrol agent was evaluated based on incubation period, disease incidence, disease severity, and the area under the disease progress curve (AUDPC). Their biostimulant potential was assessed through parameters related to seedling growth, plant development, and yield. Results indicated that the endophytic bacterial consortia effectively suppressed sheath blight and significantly improved rice growth and production. Notably, the consortium of B. thuringiensis LmD13, O. intermedium LmB1, and S. maltophilia LmB35 extended the incubation period to 35 days post-inoculation and reduced disease incidence, severity, and AUDPC to 22.22%, 0.29%, and 1.01, respectively. This consortium also enhanced rice yield, with fresh and dry grain weights reaching 72.78 g and 63.02 g, respectively, compared to the positive control. These findings suggest that this bacterial consortium holds strong potential as a biocontrol agent and yield enhancer in rice cultivation.
Pathogenicity of endophytic bacteria as entomopathogens against Spodoptera litura fabricius. (Lepidoptera: noctuidae) Rahman, Afdil; Hamid, Hasmiandi; Resti, Zurai
CROPSAVER Vol 6, No 1 (2023)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cropsaver.v6i1.44665

Abstract

One of the biological controls of pest and plant disease is the use of enophytic bacteria. This study aimed to obtain endophytic bacterial from the root tissue of the shallot plant, which is potential as entomopathogens against the larvae of Spodoptera litura. This research was arranged in a completely randomized design (CRD) with nine treatments consisting of eight endophytic bacteria (isolation from shallot root tissue) and one control with three replications. Parameters observed were larval mortality, percentage of normal and abnormal pupae formed, percentage of normal and abnormal imago formed. The results showed that the bacteria of Serratia marcescens JB1E3 and Bacillus cereus P.14 caused the highest mortality in the larval phase, while Serratia marcescens ULG1E4 and Bacillus sp. SJI showed a long-term (latent) effect, resulting in no formation of pupa and imago of Spodoptera litura.
Antagonism of Endophytic Bacteria and the Consortium Against Culvularia oryzae Bugnic: Kemampuan Antagonis Bakteri Endofit dan Konsorsiumnya terhadap Pertumbuhan Jamur Culvularia oryzae Bugnic Resti, Zurai; Martinius, Martinius; Liswarni, Yenny
Jurnal Proteksi Tanaman (Journal of Plant Protection) Vol. 6 No. 1 (2022): June 2022
Publisher : Plant Protection Department, Faculty of Agriculture, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jpt.6.1.34-42.2022

Abstract

Endophytic bacteria have several advantages, including controlling plant pathogens and increasing plant growth. As a biological control, endophytic bacteria can suppress the development of plant pathogenic fungi. This study aimed to obtain endophytic bacteria and the consortium of endophytic bacteria that can inhibit the growth of C. oryzae. The study used a Completely Randomized Design (CRD) for studying the ability of endophytic bacteria using eight isolates: Bacillus sp HI, Bacillus sp SJI, B. cereus P14, B. cereus Se07, Serratia marcescens strain JB1E2, S. marces-cens strain JB3, S. marcescens strain ULG1E2 and S. marcescens strain ULG1E4, with three replications. For Studying the ability of endophytic bacteria consortium using six endophytic bacteria consortia and control with three replications. Observations were made on the inhibition growth of C. oryzae. The results showed that all endophytic bacteria and the endophytic bacteria consortium could inhibit C. oryzae, with inhibition of 58.50% – 75.00% and 38.00% – 77.00%. Endophytic bacteria which can significantly suppress the growth of C. oryzae were B. cereus Se07, Bacillus sp HI and Bacillus sp SJI with inhibition of 75.00%, 70.50%, and 70.00%. The endophytic bacteria consortium that had a high ability to suppress the growth of C. oryzae was the consortium of B (S. marcescens strain ULG1E4, S. marcescens strain JB1E3), D (Bacillus sp SJI, Bacillus sp HI, S. marcescenns JB1E3), and G (Bacillus sp SJI, S. marcescens strain ULG1E4), with inhibition of 77.00%, 72.33%, and 71.33%, respectively.
English: Infeksi Jamur Pascapanen pada Biji Kopi Arabika (Coffea arabica Linnaeus) di Daerah Sentra Kopi Arabika, Provinsi Sumatera Barat, Indonesia Martinius, Martinius; Fauzi, Aziz; Resti, Zurai
Jurnal Proteksi Tanaman (Journal of Plant Protection) Vol. 6 No. 2 (2022): December 2022
Publisher : Plant Protection Department, Faculty of Agriculture, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jpt.6.2.1-10.2022

Abstract

Post-harvest fungi attacks in storage can reduce the quality of Arabica coffee. The study aimed to determine the level of infection and types of post-harvest fungi in Arabica coffee beans and their quality. The research was carried out at the Phytopathology Laboratory of Plant Pests and Diseases Department and the Seed Technology Laboratory of Agronomy Department, Agriculture Faculty, Universitas Andalas, Padang, from June to August 2021. The infection level of post-harvest fungi was detected using the blotter method. Physical quality was determined based on the percentage of defects, and the quality of the coffee beans was classified according to the Indonesian National Standard (SNI). The samples were taken from three collectors in each of the three central districts of Arabica coffee, West Sumatera province (Solok Selatan, Pesisir Selatan, Lima Puluh Kota) and one sample from Solok Radjo Cooperative as a comparison. The results showed that post-harvest fungi that attacked Arabica coffee beans in West Sumatra belong to the Aspergillus genus, namely Aspergillus niger, A. flavus, and A. ochraceus. The highest post-harvest fungi attack was from Lima Puluh Kota (63.67%), and the lowest was from Solok Radjo (27%). The fungus with the highest infection rate was A. niger (38.83%), and the lowest was A. flavus (0.53%). The best quality of Arabica coffee beans was found in Solok Radjo (quality 3), with a water content that suitable with SNI standards.