Bambang Tri Rahardjo

University of Brawijaya

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Hagus Tarno

University of Brawijaya

Ludji Pantja Astuti

University of Brawijaya

Akhmad Rizali

University of Brawijaya

Sri Karindah

University of Brawijaya

Toto Himawan

University of Brawijaya

FAIZ NASHIRUDDIN MUHAMMAD

University of Brawijaya

Gatot Mudjiono

University of Brawijaya

Tita Widjayanti

University of Brawijaya

Nurdiana Nurdiana

University of Brawijaya

Siti Rasminah

University of Brawijaya

Cooperative Institutions

University of Brawijaya

147

National Research and Innovation Agency

Indonesian Agency for Agricultural Research and Development

RSUD Prof. Dr. Saiful Anwar Malang

IPB University

Pusat Penelitian dan Pengembangan Peternakan

Universitas Patria Artha

Badan Penelitian dan Pengembangan Kesehatan

Institut Bisnis dan Informatika Kesatuan

National Nuclear Energy Agency of Indonesia

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PENGARUH APLIKASI BAKTERI Pseudomonas fluorescens DAN Bacillus subtilis TERHADAP MORTALITAS NEMATODA PURU AKAR (Meloidogyne javanica) DI LABORATORIUM

DOAJ (DOAJ: Directory of Open Access Journals) (2014)

Isnainy Dinul Mursyalati Yus Bambang Tri Rahardjo Toto Himawan

ABSTRAK Nematoda puru akar ( Meloidogyne sp.) merupakan salah satu penyakit penting pada berbagai tanaman berekonomi tinggi.Serangan nematoda puru akar menyebabkan kerusakan secarakualitatif maupun kuantitatif.Pemanfaatan musuh alami nematoda yang berasal dari kelompok jamur dan bakteri dapat digunakan sebagai agen hayati.Penelitian ini dilaksanakan di Sub Laboratorium Nematologi Jurusan Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Brawijaya Malang. Penelitian ini bertujuan untuk mengetahui kemampuan isolat bakteri Pseudomonas fluorescens (UB_Pf1)dan Bacillus subtilis (UB_Bs1) dalam menyebabkan mortalitas juvenil II nematoda puru akar ( Meloidogyne sp.), dan pengaruh kerapatan koloni bakteri P. fluorescens (UB_Pf1)dan B. subtilis (UB_Bs1) dalam menyebabkan mortalitas juvenil II nematoda puru akar ( Meloidogyne sp.).Hasil penelitian menunjukkan bahwa aplikasi isolat bakteri P. fluorescens (UB_Pf1)dan B. subtilis (UB_Bs1) mampu menyebabkan mortalitas juvenil II nematoda puru akar ( M. javanica ). Selain itu, pengaruh 3 taraf kerapatan koloni bakteri P. fluorescens (UB_Pf1)dan B. subtilis (UB_Bs1) dapat mempengaruhi mortalitas juvenil II nematoda puru akar ( M. javanica ). Nilai LT 50 tertinggi pada aplikasi bakteri P. fluorescens dan B. subtilis kerapatan koloni 10 11 cfu/ml, yaitu 32,99 jam untuk bakteri P. fluorescens dan 56,78 jam untuk B. subtilis . Kata kunci : Nematoda puru akar, P. fluorescens , B. subtilis , mortalitas

Pseudomonas fluorescens

Meloidogyne javanica

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PENGARUH PENAMBAHAN BAHAN ORGANIK SERASAH DAN LIMBAH BATANG TEBU TERHADAP KEANEKARAGAMAN JENIS SEMUT (HYMENOPTERA: FORMICIDAE) PADA EKOSISTEM TANAMAN TEBU

Jurnal Hama dan Penyakit Tumbuhan (2024)

Rohmat Sayful Affandi Bambang Tri Rahardjo

Tujuan dari penelitian ini untuk mengetahui pengaruh pemberian jenis bahan organik dari serasah tebu dan limbah batang tebu terhadap kelimpahan dan keanekaragaman semut pada ekosistem tanaman tebu. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan tiga perlakuan dan enam ulangan. Pengambilan sampel dilakukan dengan metode pitfall trap dan bait trap (ikan tuna) dengan interval seminggu sekali selama delapan minggu. Hasil penelitian ditemukan empat subfamili, delapan genus dengan jumlah total 22.254 individu. Semut berpotensi berperan predator di antaranya Crematogaster sp., Dolichoderus sp., Odontomachus sp., Pheidole sp., dan Solenopsis sp. sisanya berperan sebagai foragers yaitu Camponotus sp., Calomyrmex sp., dan Tapinoma sp. Hasil analisis ragam diperoleh bahwa P2 berpengaruh nyata terhadap kelimpahan individu semut dibandingkan P0 dan P1 (F3 12 = 4,463 P > 0,0301). Hasil perhitungan indeks keanekaragaman P0 dan P1 termasuk sedang, P2 rendah, indeks Kemerataan P0, P1, dan P2 sedang, indeks Dominansi P0, P1 rendah dan P2 sedang.

10.21776/ub.jurnalhpt.2024.012.2.2

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The Effect of Insecticide Application on Plutella xylostella Linn. and its Parasitoid Diadegma sp.

Journal of Tropical Plant Protection (2021)

Bambang Tri Rahardjo Tita Widjayanti Antika Anggraini

Cabbage is one of the commodities that mostly cultivated in Indonesia, but the cabbage farmers often suffered losses because of pests' attack. The important pests on cabbage is Plutella xylostella. This study aimed to investigate the effectiveness level of an insecticide with active ingredient carbaryl 85% in controlling P. xylostella which attacks cabbage and its impact on the parasitoid of Diadegma sp. This research uses a randomized block design with six treatments and four replications. The treatments were different concentrations of the insecticide carbaryl 85%. The testing on Diadegma sp. used two methods, directly and indirectly test (residual exposure). The carbaryl 85% was not effective in controlling P. xylostella, but the population was decreasing. The carbaryl 85% with the highest effect in reducing P. xylostella population was 3.0 g/l. The carbaryl 85% did not affect on the mortality of natural enemies (Diadegma sp. parasitoid) after direct and indirect test.

Carbaryl

10.21776/ub.jtpp.2021.002.1.1

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The Effect of Inoculum Type and Mycorrhiza Dosage on Growth and Production of Mung Bean Vigna Radiata L.

Journal of Tropical Plant Protection (2021)

Syamsuddin Djauhari Jami'at Dwi Elriyono Bambang Tri Rahardjo

Mung bean (Vigna radiata L.) is the third most essential legume crop commodity after soybeans and peanuts. Mung bean production faced problems of nutrient-poor land and soil texture that does not support soybean growth. The solution to overcome these obstacles is the application of mycorrhizae in nutrient-poor soils. This study aimed to determine the effect of various inoculums and mycorrhizal doses on growth and production in mung beans. This study used a Completely Randomized Design with nine treatments and three replications. The research included mycorrhizal inoculation with various treatments, as well as observations with variable plant height, plant biomass, number of pods, wet weight and dry weight of pods, the weight of 50 wet and dry seeds, mycorrhizal infection in roots, and number of spores in 100 gr of soil. The data were analyzed by SPSS 15.0 program for ANOVA. The results indicated that granular (30 gr) had the highest plant height of (41.33 cm), crown weight (30.69 gr), number of pods, wet and dry pod weight is 13.66, 9.84 gr, and 8.86 gr, respectively, 50 kg of wet and dry weight (3.82 and 3.20) and the highest effect on the number of spores at 29.33. The 30 gr tablets treatment showed the highest results on root weight (22.98 gr), while the 30 gr mixture showed the highest results on the percentage of infection (73.33%).

Dry weight

Radiata

10.21776/ub.jtpp.2021.002.1.4

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Aromatherapy oils of lavender (Lavandula angustifolia) inhalance reduced norepinephrine levels of woman with postpartum blues based on Edinburgh postpartum depression scale

AIP conference proceedings (2020)

Erna Amin Bambang Tri Rahardjo Kusworini Kusworini

Postpartum blues are the most common mood disorder commonly found in the postpartum period. This disorder negatively impacts on the health of mothers and their babies which results in poor treatment. The pathophysiology of postpartum blues is known to be associated with the noradrenergic system. This study aimed to determine the effect of aromatherapy oils of lavender inlahance on norepinephrine levels of mothers with postpartum blues. A quasi-experimental study with a pretest-posttest control group design was conducted from April to May 2019 in three health centers. The purposive sampling method was used to obtain data from the treatment and control groupsculminated in 28 people. Furthermore, five drops of aromatherapy lavender administered on cotton was inhaled by the groups for 15 minutes twice a week for four weeks. Urine was collected to measure norepinephrine metabolites; the data were analyzed using the Wilcoxon signed-rank test. A total of 55 postpartum women were screened, out of which 33 (60%) experienced postpartum blues. Data from norepinephrine measurement results were analyzed using the Wilcoxon signed-ranks test with a p-value of 0.157 > 0.05. The analysis results showed no significant difference in the norepinephrine levels of the control group. Meanwhile, in the treatment group, p-value was 0.001 < 0.05 which indicated significant differences. Lavender aromatherapy effectively reduced the levels of norepinephrine in women with postpartum blues.

Aromatherapy

Blues

10.1063/5.0003654

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PERAN PROFITABILITAS DALAM MEMODERASI PENGARUH STRUKTUR MODAL DAN KEBIJAKAN DIVIDEN TERHADAP NILAI PERUSAHAAN

JURNAL AKUNTANSI (2020)

Mislia Ambar Sari Lela Nurlaela Wati Bambang Tri Rahardjo

This study aims to determine the effect of capital structure and dividend policy on firm value by moderating profitability in food beverages companies. Samples are Food Beverages Sub Sector manufacturing companies listed on the Indonesia Stock Exchange in the 2014-2018 period, which were taken using purposive sampling technique. The analysis technique used is a moderation regression analysis (MRA) using eviews 9. The results of hypothesis testing show that the capital structure variable (DER) has a positive and significant effect on firm value (PBV), dividend policy (EPS) has a positive and significant effect on firm value ( PBV), profitability (ROA) strengthens the effect of capital structure (DER) on firm value (PBV), but profitability (ROA) does not strengthen the effect of dividend policy (EPS) on firm value (PBV). These results indicate that the higher the capital structure financed by debt and the greater the dividends distributed to investors, the higher the firm value.Keywords: Capital Structure, Dividend Policy, Profitability, Firm Value

Leverage (statistics)

Moderation

10.37932/ja.v9i1.92

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Comparison of Arthropod Diversity in Organic and Conventional Rice Cultivation in Trawas District, Mojokerto Regency

Journal of Tropical Plant Protection (2024)

Cicik Nur Ayumi Bambang Tri Rahardjo

Different cultivation techniques for rice (Oryza sativa L.) are known to affect arthropod populations and diversity levels. This research was conducted to study how arthropod diversity can be affected by different cultivation techniques. The research was carried out from October 2022 to March 2023. Arthropod diversity observations were carried out in the organic rice field of Kampung Pertanian Organik Brenjonk and a conventional rice field belonging to a farmer in Penanggungan Village, Trawas District, Mojokerto Regency. Data were collected weekly for 12 observations. Arthropods were collected using passive methods, such as pitfall and yellow sticky traps, and active methods, such as sweep netting and handpicking. The data were analyzed to assess the diversity level. The results showed more arthropods in the organic rice field, with 1815 individuals consisting of 4 classes, 13 orders, 52 families, 70 genera, and 74 morphospecies. In contrast, in the conventional rice field, 1028 individuals were found, consisting of 3 classes, ten orders, 28 families, 32 genera, and 33 morphospecies. The calculation results of arthropod diversity levels showed that the organic field is better than the conventional field.

Arthropod

10.21776/ub.jtpp.2024.005.1.1

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Propolis ethanolic extract influenced biofilm formation and gene expression level of EFG1 in Candida albicans

AIP conference proceedings (2021)

Sumarno Reto Prawiro A. A. Santi Dewi Anggie Diniayuningrum Dinda Oktia Maghfiroh Nurdiana Nurdiana

Vulvovaginal candidiasis occurs in 70 - 75% of women. About 40 - 45% of them experience vulvovaginal candidiasis for the second time. Approximately 70 - 89% of these infections are caused by Candida albicans. Candida albicans forming biofilm are reported to have a higher resistance to most anti-fungal drugs, including fluconazole. Objective: To determine the effects of propolis ethanolic extract (PEE) on biofilm formation and genes expression level of EFG1 on C. albicans biofilm. Methods: C. albicans biofilm formation was grown on SDB + 2% glucose and added with PEE with a concentration of 0% (control group) and 2.5, 5, 7.5, 10 and 12.5% (treatment group). Then, C. albicans biofilm formation was incubated at 37 °C for 48 hours. Biofilm inhibition was tested by the crystal violet assay. Analysis of genes expression level of EFG1 was performed using Real Time-PCR and calculated by absolute quantification method. Results: The results of the PEE effect on biofilm inhibition percentage showed a decrease in biofilm formation with the increase in PEE concentration given (p = 0.001), and gene expression level analysis showed that EFG1 (p = 0.000) expression level decreased with the increase in PEE concentration given. Conclusion: Propolis ethanolic extract could reduce biofilm formation and down-regulate the expression of EFG1 in C. albicans biofilm formation.

Propolis

10.1063/5.0052928

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PENGARUH PERBEDAAN PENGELOLAAN AGROEKOSISTEM TANAMAN TERHADAP STRUKTUR KOMUNITAS SERANGGA PADA PERTANAMAN KEDELAI DI NGALE, KABUPATEN NGAWI, JAWA TIMUR

JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA (2015)

Lutfi Afifah Purnama Hidayat Damayanti Buchori Marwoto Bambang Tri Rahardjo

Effect of different agroecosystem management on community structure of insects in soybean crop in Ngale, Ngawi District, East Java. Insect community structures in agroecosystem may always change. Agroecosystem management techniques affect insect community structure. The aim of this study was to determine the diversity and composition of insects on soybean plants under different pest management systems and varieties. The experiment design was split plot with varieties (Anjasmoro and Wilis) as the main plots and pest management systems (Integrated Pest Management (IPM), Non-Chemical Management (P-NK), Chemical Management (P-K), and Control) as the sub plots. There were ten insect sampling sessions for each plot. Samplings were done in June until September 2013 using pitfall traps, sticky traps, sweep net, and yellow pan traps. Statistically the results of experiment showed that varieties and pest management had no significant differences to the insects diversity. Herbivore and beneficial insect in soybean crop had differences composition between varieties Anjasmoro and Wilis. In both soybean Anjasmoro and Wilis varieties, herbivore populations tend to be higher in the control plots compared to the IPM plots. Abundance of decomposers, parasitoids, and predators tend to be higher in the control and P-NK plots which were without the use of synthetic insecticides compared to the IPM and P-K plots which were given the treatment of synthetic pesticides. This indicates that the use of pesticides causes decrease in the beneficial insect populations such as pollinator, parasitoids, and predators.

Agroecosystem

10.23960/j.hptt.11553-64

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Impact of ripening spherical fruits on hard flat surface.

Proceedings of the International Agricultural Engineering Conference, Bangkok, Thailand, 3-6 December 2007. Cutting edge technologies and innovations on sustainable resources for world food sufficiency. (2007)

Bambang Tri Rahardjo P. Tamtomo R. Handoyo Tyas Utami V. M. Salokhe

Flat surface

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