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All Journal Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences The Journal of Experimental Life Sciences (JELS) Buletin Tanaman Tembakau, Serat & Minyak Industri Research Journal of Life Science Jurnal Pembangunan dan Alam Lestari Plantropica: Journal of Agricultural Science Journal of Tropical Plant Protection AGRIVITA, Journal of Agricultural Science JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Jurnal Penelitian Pertanian Tanaman Pangan Biosaintifika: Journal of Biology & Biology Education Jurnal Entomologi Indonesia Agro Bali: Agricultural Journal Buletin Tanaman Tembakau, Serat & Minyak Industri Jurnal HPT (Hama Penyakit Tumbuhan)
Bambang Tri Rahardjo
Departemen Hama Dan Penyakit Tumbuhan Fakultas Pertanian Universitas Brawijaya
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Environmental Science Immunology & microbiology Medicine & Pharmacology Neuroscience

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Survey of Xylosandrus compactus (Coleoptera: Curculionidae) Attack Levels in Malang: Influence of Land Management and Habitat Conditions Manurung, Jihan Salmaa Afiifah; Rahardjo, Bambang Tri; Syamsulhadi, Mochammad; Muhammad, Faiz Nashiruddin
AGRIVITA Journal of Agricultural Science Vol 47, No 3 (2025)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v47i3.4907

Abstract

Humidity at a low level reduces the growth and development of borer pests. On the contrary, coffee plants under shaded conditions grow and develop under higher humidity and lower temperatures, causing the risk of X. compactus. This research aimed to evaluate differences in twig borer attack intensity and their relationship with environmental and management factors. From August to December 2023, research was done in twelve coffee plantations in UB Forest, Dampit, Bangelan, and Ngantang. Direct observations such as infestation intensity, temperature, relative humidity, canopy cover, and the diversity and abundance of weeds and shade trees, were done. We also recorded the pruning, pesticide use, and fertilizer application. The relationships between infestation intensity and habitat management variables were analyzed using general linear models. We concluded that the twig borer infestation intensity varied widely among plantations, with the highest levels recorded in Ngantang. Temperature, canopy cover, species diversity, and weed abundance did not significantly influence infestation levels. Nevertheless, relative humidity presented a significant positive correlation with infestation intensity. Moreover, among the observed management practices, only pruning intensity significantly reduced twig borer infestation, while pesticide application and fertilization had no significant effect.
Arthropods Diversity on Eggplant (Solanum melongena L.) Between Monoculture and Intercropping Farming System Faljila, Fanisa; Rahardjo, Bambang Tri
Journal of Tropical Plant Protection Vol. 3 No. 2 (2022)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtpp.2022.003.2.1

Abstract

This research aims to assess the diversity of arthropods, the abundance of Epilachna sparsa Auctt. and the feasibility of farming on monoculture and intercropping at the Agricultural Technology Assessment Center (BPTP). The research was conducted in BPTP of Riau Islands from January to April 2021. Sampling was carried out directly on fields with a total sample of 26 plants in the absolute method and 12 yellow sticky traps and 12 blue pan traps. The value of the diversity index (H') on the two fields belonged to the medium category. The richness index (R) on monoculture field was classified as being different from intercropping field which was classified as high. The evenness (e') on both fields was high and the dominance (C) showed that there was no arthropod that dominant. The t-test results for the intensity of E. sparsa's attack no significant effect on the two fields. The R/C ratio value on monoculture field was 1,32 and the R/C ratio value on intercropping had obtained a value of 1,85. The selling price on monoculture field was said to be a return on investment if it was sold at a price of Rp 5,285/kg while on the intercropping field was sold at Rp 6,351/kg.
Arthropods Diversity on Soybean Fields with Integrated Pest Management and Conventional Systems in Gandusari District, Blitar Regency Mahendra, Niko; Rahardjo, Bambang Tri; Widjayanti, Tita
Journal of Tropical Plant Protection Vol. 4 No. 1 (2023)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtpp.2023.004.1.3

Abstract

Various negative impacts of pesticides must be avoided by applying management principles that have as little negative impact on the environment as possible using an integrated pest management (IPM) approach. This study aimed to examine the diversity of arthropods and the feasibility of farming in IPM and conventional fields on soybeans. Arthropod sampling was carried out in September–December 2021 using a yellow pan trap, yellow sticky trap, and visual methods. The arthropod population found was analyzed using the T-test, and the level of arthropod diversity was calculated based on the diversity index (H'), species richness index (R), evenness index (E), and dominance index (C). The feasibility of farming on both fields was calculated using the R/C ratio and BEP prices. The results showed that the number of arthropods in IPM and conventional fields was significantly different. In both fields, the diversity index value was in the medium category, the species richness index value and the evenness index value were in the high category, and there was no dominance in both fields. Even though it belonged to the same category, the index value of arthropod diversity in the IPM field was higher than in the conventional field. In IPM and conventional fields, the R/C ratio values were 1.01 and 1.06, respectively, while the BEP value in IPM and conventional fields was IDR 10,601.44 and IDR 10,075.14.
Influence of Phosphate Powder Application on The Biology and Demographic Statistics of Green Ladybug (Nezara viridula L.) (Hemiptera: Pentatomidae) on Soybean Pods Septiani, Rohma Wulan; Rahardjo, Bambang Tri; Widjayanti, Tita
Journal of Tropical Plant Protection Vol. 4 No. 2 (2023)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtpp.2023.004.2.1

Abstract

Green ladybug Nezara viridula (Hemiptera: Pentatomidae) is one of the harmful pests on soybeans. One of the ways to suppress attacks is by using phosphate fertilizers. The effect of applying phosphate fertilizer could be seen using biological parameters and demographic statistics. The research was conducted at the Pest and Wirehouse Laboratory, Department of Plant Pests and Diseases, Faculty of Agriculture, Brawijaya University, from January to June 2022. The experimental design in this study used Completely Randomized Design (CRD) in the laboratory and wired house. There were four treatment doses of phosphate fertilizer consisting of 0 kg/ha (control), 25  kg/ha (low), 50 kg/ha (recommendation), and 75 kg/ha (high). Observations were made on 90 individuals of N. viridula in each treatment divided into three replications. The type of phosphate fertilizer used in this study was SP36 fertilizer. The observational variables of this study were the biology and demographic statistics of N. viridula. Observations were made daily, and the data were compiled in a live table. Calculations were carried out using demographic statistics and analysis of variance to determine differences between treatments using HSD 5%. The results showed biological and demographic statistical differences in N. viridula: personality, life cycle, and gross growth rate (GRR). These findings have significant implications for pest management in soybean cultivation, suggesting that applying phosphate fertilizers can effectively suppress the attacks of N. viridula, particularly at the recommended dose.
Diversity And Abundance of Collembola in Agroforestry Land in UB Forest Simatupang, Rusdi Ali Sabar; Rahardjo, Bambang Tri
Journal of Tropical Plant Protection Vol. 4 No. 2 (2023)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtpp.2023.004.2.4

Abstract

Collembola is one of the soil arthropods from the subphylum Hexapoda, namely six-legged arthropods that live in the soil, soil surface, leaf litter, under decomposed stems, and in living fungi. This study aims to determine and examine the diversity and abundance of Collembola on agroforestry land in UB Forest. The preparation and implementation of the research consisted of the determination of plot land, determination of soil sampling points, making holes and soil sampling, extraction of Collembola with a Berlese funnel, sorting and identification of Collembola, soil chemistry analysis and data analysis using the index formula of diversity, evenness, dominance, richness, and abundance and further analyzed with the T-test. The largest population of Collembola is found in pine + coffee land, which is 242 individuals. The highest diversity index is found in pine land, which is 1.04 which is classified as moderate or quite stable. The highest percentage of Collembola species abundance in pine + coffee fields, pine lands, and coffee fields is the family Isotomidae. The lowest percentage of Collembola abundance in pine + coffee fields and pine fields is the family Hypogastruridae, while in coffee fields it is the family Sminthuridae.
Pathogenicity, Development and Reproduction of The Entomopathogenic Nematode Steinernema sp., in Mealworm Tenebrio molitor Baliadi, Yuliantoro; Sastrahidayat, Ika Rochdjatun; Djauhari, Syamsuddin; Rahardjo, Bambang Tri
AGRIVITA Journal of Agricultural Science Vol 33, No 3 (2011)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v33i3.74

Abstract

The pathogenicity, development and reproduction of Steinernema sp., isolate Skpr-20/Str, were studied using Tenebrio molitor. Results revealed that pathogenicity, development and reproduction were significantly influenced by nematode doses. Although the number of invading IJs increased with increasing dose, percentage penetration declined. The IJs reached adulthood within 3 days. Females laid eggs from day 4-7. All eggs remaining inside uterus develop inside the maternal body. The first female bearing endotokia matricida was observed on day 5. In a sand-based assay, nematode was more pathogenic at lower dose instead of higher ones, where optimum dose was 80 nematodes per larva and average number of progeny per female was 5438. Under crowded conditions, development proceeds to IJ stage instead of the J3. The average length and width decreased with increasing of nematode doses. The IJ produced in cadavers infested with 640 nematodes per larva was significantly smaller (492 ± 6.4 µm) than offspring from other doses. The number of days which nematodes first emerged from the cadavers decreased with increasing dose. IJ first emerged at the average of 10-13 days at high IJ densities. It is concluded that the wide experimental characteristic of EPNs is also true for Steinernema sp., isolate Skpr-20/Str.Keywords: development, emergence period, endotokia matricida, entomopathogenic nematode, isolation, pathogennicity, Steinernema sp., isolate Skpr- 20/Str
Populasi Elaeidobius kamerunicus Faust (Coleoptera: Curculionidae) pada beberapa umur tanaman kelapa sawit Rahardjo, Bambang Tri; Rizali, Akhmad; Utami, Ika Putri; Karindah, Sri; Puspitarini, Retno Dyah; Sahari, Bandung
Jurnal Entomologi Indonesia Vol 15 No 1 (2018): Maret
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (479.541 KB) | DOI: 10.5994/jei.15.1.31

Abstract

Elaeidobius kamerunicus Faust is an oil palm pollinator insect that lives on the male inflorescence and visits female inflorescence to pollinate due to attracted by its volatile compound. The number of fruit sets of oil palm relates to the population of E. kamerunicus on a plantation. The objective of this study was to investigate the effect of age of oil palm on the population of E. kamerunicus. Field research was conducted in oil palm plantations that located in Pangkalan Lada, Kotawaringin Barat District, in Central Kalimantan. The research method was by measurement of E. camerunicus population on male inflorescences and set up the sticky trap on female inflorescences. Plot with size 7000 m2 (100 trees) was selected on several ages of oil palm i.e. 6, 10 and 16 years. Each plot, the number of male and female inflorescences was counted and some inflorescences were chosen for measurement of E. camerunicus population that was conducted monthly for three months of observation. The results showed that the age of the oil palm affected the population of E. kamerunicus in male inflorescences but not in female inflorescences. The older age of oil palm, the population of E. kamerunicus in male flowers was increasing. The sex ratio of E. kamerunicus found in male and female inflorescences of oil palms tend to female bias. Based on the comparison of E. kamerunicus population between male and female inflorescences on each plot, it was found that visitation value of E. kamerunicus was highest in the young oil palm. In conclusion, increasing age of oil palm trees affected on increasing of E. kamerunicus population in male inflorescences, but visitation value on female inflorescences prone to decline.
Population Growth of Tribolium confusum (Coleoptera: Tenebrionidae) on Various Commercial and Non-commercial Flour Wulandari, Ratna; Astuti, Ludji Pantja; Rahardjo, Bambang Tri
Agro Bali : Agricultural Journal Vol 8, No 3 (2025)
Publisher : Universitas Panji Sakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37637/ab.v8i3.2401

Abstract

Tribolium confusum Jacquelin du Val (Coleoptera: Tenebrionidae) is a major stored product pest that can damage flour in storage. The infestation of T. confusum causes contamination of stored grain, such as flour. Research about the population growth of T. confusum in various commercial and non-commercial flours is still limited. This study aims to determine the population growth of T. confusum in various commercial and non-commercial flours. The study was conducted using the no-choice test method (NCTM). This study used a treatment jar containing 30 g of diet and infested 15 pairs of T. confusum adults for 7 days. Data obtained from this research were analyzed using analysis of variance (ANOVA) and further analyzed using the Duncan Multiple Range Test (DMRT) at a 5% significance level. The results showed that the number of larvae, pupae, and F1 progeny of T. confusum was higher in non-commercial red rice flour (80, 50 individuals; 59, 50 individuals; 57, 50 individuals) compared to other types of flour. The chemical characteristics of diets that can affect the population growth of T. confusum include fat, ash, carbohydrate, and phenol content. In conclusion, understanding the chemical characteristics of flour is crucial for developing a strategy to control T. confusum.
The Influence of Cultivation Techniques on Horticultural Cultivation on The Diversity, Abundance, and Composition of Spiders Salsabila, Shevira Satria; Rahardjo, Bambang Tri
Journal of Tropical Plant Protection Vol. 7 No. 1 (2026)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtpp.2026.007.1.5

Abstract

Organic farming is a cultivation technique that applies natural materials and does not use chemical fertilizers and pesticides in cultivation techniques. Differences in cultivation techniques can affect the diversity, abundance, as well as the composition of spiders. This study was conducted to determine the diversity, abundance, as well as composition of spiders can be influenced by different cultivation techniques. The research was conducted from September 2023 to October 2023. Observations were made on organic land and conventional land. Data collection of cultivation techniques is carried out by interviews. Population and diversity data collection is carried out every 5 days within 4 weeks. Specimen collection is carried out by passive and active methods and then identification is carried out. Tabulate data in Microsoft Excel, then analyze it using Rstudio. In the Rstudio analysis, the Shapiro-Wilk test was carried out to determine the normality of the data, further Honest Significant Difference test at the level of 5%. Data analysis carried out in the form of variety analysis or and ANOSIM using the Bray-Curtis test. The results of the study, the number of spiders on organic land was more, namely 65 individuals consisting of 5 orders and 9 morphospecies. The results showed that differences in cultivation techniques had an effect on the diversity and abundance of spiders. The composition of the land shows that there is a significant difference but there are intersecting parts that indicate a similarity in the composition of spiders. The results of data analysis show that organic land has more diversity, abundance, and spider composition than conventional land.
Induced Resistance of Rice Plants to Brown Planthoppers (Nilaparvata lugens Stål.) Through The Application of Compost SyamsulHadi, Mochammad; Taufiqurrahman, Achmad Fitriadi; Rahardjo, Bambang Tri; Tarno, Hagus
Plantropica: Journal of Agricultural Science Vol. 8 No. 2 (2023)
Publisher : Department of Agronomy, Faculty of Agriculture, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpt.2023.008.2.09

Abstract

The brown planthopper (Nilaparvata lugens Stål) poses a major threat to rice plants. Integrated Pest Management (IPM) emphasizes induced resistance as a cost-effective and sustainable strategy for protection. This research aims to investigate the impact of compost on rice plant resistance against brown planthoppers, the levels of silicate (SiO2) content and stem hardness in rice, and the mechanisms of resistance in rice plants attributed to compost. The research was conducted from June to November 2022 at the screen house of the Faculty of Agriculture, Brawijaya University and the Pest Laboratory, Department of Plant Pests and Diseases, Faculty of Agriculture, Brawijaya University. Analysis of silicate content (SiO2) was carried out at the Indonesian Sugar Plantation Research Center Laboratory. Analysis of the hardness lever of rice stem was carried out at the Food Quality and Safety Testing Laboratory, Faculty of Agricultural Technology, Brawijaya University. A randomized design featured 5 treatments and 5 replications, including varying compost doses (8, 11, 14, and 17 t ha-1) and a compost-free control. Parameters observed were brown planthopper mortality, damage intensity, silicate content, and stem hardness. Results exhibited compost is positive impact on brown planthopper mortality, reduced damage, higher silicate content, and increased stem hardness with higher compost doses. This research highlights compost is potential in enhancing rice plant resistance and protecting crops in an environmentally friendly manner.
Co-Authors A. A. Ketut Aryawan A. A. Ketut Aryawan Abdul Latief Abadi Achadian, Etik Mar`ati Achmad Faisal Akbar Adistanaya, Radika Affandi, Rohmat Sayful Ahmad Muhlisin Ahmad Muhlisin Akhmad Rizali Annike Putri Damayanti Antika Anggraini Ayu Rosmayuningsih Ayu Rosmayuningsih Ayumi, Cicik Nur BANDUNG SAHARI Bobby Polii David Soetjipto Dede Durahman Dede Durahman Devi, Mia Prastika Fadloli, Ahmad Iqbal Rijal Faljila, Fanisa Fitriani, Ima Gatot Mudjiono Guntur Respyan Guntur Respyan Hagus Tarno Hagus Terno Hidayat, Mohamad Rizkiy Husni dan Zulfanazli Pudjianto Alfian Rusdy Ika Putri Utami Ika Rochdjatun Sastrahidayat Isna Kartika Wati Isnainy Dinul Mursyalati Yus Isnainy Dinul Mursyalati Yus Jami'at Dwi Elriyono Jantje Pelealu Januarisya, Muthia Adira Karisma Aditya Wardani Kristiana Sri Wijayanti Kurnia Paramita Sari Laraswati, Nur Adinda Liza Afifah Liza Afifah Liza Afifah Ludji Pantja Astuti Ludji Pantja Astuti Ludji Pantja Astuti Mahendra, Niko Manurung, Jihan Salmaa Afiifah Marianus Marianus Marwoto . Maspupah Huzni Maspupah Huzni Mawaddah, Rabbiana Meity Nelltje Tanor Mochammad Syamsul Hadi Mufidah Afiyanti Muhammad Indar Pramudi Muhammad, Faiz Nashiruddin Ndii, Adrianto Marthinus Nur Angga Prayoga Nurlinda Nurlinda Nurul Aini Okty Ayu Lestari Praditya, Al Farriz Sandro Presti Mardiyani Purwaningtyas Presti Mardiyani Purwaningtyas, Presti Mardiyani PURNAMA HIDAYAT Putra, Satrya Adhimas Eka Putri Setya Rahmita Rahmawati, Alvina Eka Ratna Wulandari Retno Dyah Puspitarini Rina Rachmawati Rina Rachmawati Rina Rachmawati Rizki Nur Suci Rizki Puji Widiastuti Rizki Puji Widiastuti Rizky Septiyawati Ronny Pamuji Ronny Pamuji Rose Novita Sari Handoko Salsabila, Shevira Satria Senoaji, Wasis Septiani, Rohma Wulan Silvi Ikawati Simatupang, Rusdi Ali Sabar Sri Karindah Sri Karindah Sumeru Ashari Syamsuddin Djauhari Syamsuddin Djauhari Syamsulhadi, Mochammad Taufiqurrahman, Achmad Fitriadi Teguh Yulianto, Teguh Tita Widjayanti Tita Widjayanti Toto Himawan Yuliantoro Baliadi Zeni Ningrum Zeni Ningrum