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Population of Lamprosema indicata and Their Parasitoid in Edamame Soybean Plant Joko Siswanto; Tita Widjayanti; Sri Karindah
Journal of Tropical Plant Protection Vol 2, No 2 (2021)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtpp.2020.002.2.4

Soybean Glycine max L. Merrill has a strategic position in food security. Soybean varieties are various, such as edamame or commonly called vegetable soybean. The important edamame pest is L. indicata. This pest has a natural enemy in the form of parasitoids that spread at several altitudes. This study aimed to investigate the L. indicata pest population and their parasitoid in edamame soybean plantations at three different altitudes. In this study conducted at three altitudes namely Purwosari (12 masl), Sebanen (814 masl), and Karangbireuh (1295 masl). At each location consist of one plot (1 Ha) and were made into 4 sub-plots exchanging 10 x10m. Also, the yellow pan trap was installed at 8–57 Day After Planting to collect L. indicata and parasitoid. The results showed that L. indicata was higher in Purwoasri than in other locations. This is due to environmental factors namely temperature. The parasitoid of L. indicata was found in all locations, namely Braconidae family (parasitoid of larvae). While the the paarasitoid were collected in yellow pan trap in all locations i.e. Pteromalidae, Diapriidae, Eulophidae, Mymaridae and Entomacis sp.

Organic Matter in the Topsoil of Soybean Field Alters Arthropod Diversity and Their Covariation Akhmad Rizali; Julia Putri Pramudita; Eva Febriyanti; Yolla Frinsiska Rama; Tita Widjayanti
AGRIVITA, Journal of Agricultural Science Vol 41, No 3 (2019)
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.v41i3.2332

The presence of organisms in soil play a pivotal role in the health of a ground ecosystem. Diversity and abundance of soil organisms are mainly influenced by soil characteristics and condition of above-ground habitat. This research aimed to study the diversity of arthropods in topsoil of soybean field and investigate factors that affect the abundance and interaction of dominant arthropods. Field research was conducted in three different locations in Malang District, Indonesia. A sampling of arthropods was focused in the topsoil of soybean fields in the soil surface and below-ground. Results found that three dominant taxa of arthropods in the topsoil of soybean field i.e. collembolan, ants, and mites. Different location of soybean field did not affect the species richness and abundance of the dominant arthropods, except the ant abundance. In contrast, soil strata was altered the abundance of collembolan and mites, but not ants. Based on the GLM (generalized linear model), organic matter had a positive relationship with the abundance of collembolan and ants. The abundance of collembolan and ants also had a relationship with mites, yet not vice versa. In conclusion, organic matter in the soybean field supports not only the abundance of arthropod but also their covariation.

UJI MORTALITAS TIGA ISOLAT Metarhizium anisopliae DAN EKSTRAK TEMBAKAU TERHADAP HAMA ULAT PERUSAK DAUN (Plutella xylostella) (LEPIDOPTERA: PLUTELLIDAE) PADA TANAMAN KUBIS: MORTALITY TEST OF THREE Metarhizium anisopliae ISOLATES AND TOBACCO EXTRACT AGAINST LEAF-DESTROYING CATERPILLAR PEST (Plutella xylostella) (LEPIDOPTERA: PLUTELLIDAE) ON CABBAGE Rosandy, Devia Fitri; Syamsulhadi, Mochammad; Widjayanti, Tita
Jurnal HPT (Hama Penyakit Tumbuhan) Vol. 12 No. 2 (2024)
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jurnalhpt.2024.012.2.1

Penelitian ini bertujuan untuk mengetahui efektivitas tiga isolat jamur M. anisopliae dan ekstrak tembakau dengan kerapatan dan konsentrasi berbeda dalam mengendalikan populasi hama P. xylostella. Penelitian ini dilaksanakan pada bulan Oktober sampai Desember 2022 di Laboratorium Agens Hayati Brenjonk dan Laboratorium BPTPH Pasuruan. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) dengan 16 perlakuan dan 4 kali ulangan. Setiap perlakuan menggunakan 15 ekor P. xylostella yang diuji untuk mengetahui mortalitas, daya hambat makan, LC50, dan LT50 dengan sidik ragam ANOVA dan analisis probit. Hasil penelitian menunjukkan bahwa mortalitas dan daya hambat tertinggi diperoleh dari isolat jamur koleksi Bojonegoro dan Jatisari dengan kerapatan 108 serta ekstrak tembakau konsentrasi 50 ml/L. Sedangkan nilai LC50 terbaik terdapat pada isolat jamur koleksi Jatisari yaitu 4,99% dan LT50 terbaik terdapat pada isolat jamur koleksi Bojonegoro yaitu 133,09 jam. Berdasarkan hasil penelitian menunjukkan bahwa ketiga isolat jamur M. anisopliae dan ekstrak tembakau memiliki kemampuan terbaik dalam menekan populasi hama P. xylostella.

Exploration of Symbiotic Bacteria with the Potential to Degrade Chlorpyrifos Insecticide in the Digestive Tract of the Beet Armyworm (Spodoptera exigua) (Lepidoptera: Noctuidae) in Shallot Fields, Probolinggo SyamsulHadi, Mochammad; Restikasari, Viera Annisa; Taufiqurrahman, Achmad Fitriadi; Widjayanti, Tita
Plantropica: Journal of Agricultural Science Vol. 9 No. 2 (2024): Agustus
Publisher : Department of Agronomy, Faculty of Agriculture, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar

The beet armyworm, Spodoptera exigua is a notorious pest that inflicts significant damage to shallot crops, especially leeks, causing leaves to wither due to brown spots and transparency. This issue often leads to excessive chemical control measures, which, in turn, promote insecticide resistance. This study hypothesized that symbiotic bacteria within S.exigua have the capacity to degrade chlorpyrifos-based insecticides. S.exigua samples were collected in Dringu, Gending, and Leces districts, Probolinggo, and subsequently examined for symbiotic bacteria with biodegradation potential. Bacterial exploration and identification were conducted from April to October 2023 at the Pesticide Toxicology Laboratory, Brawijaya University. The study analyzed the clear zone diameter produced by bacteria in media contaminated with chlorpyrifos-based insecticides as an indicator of biodegradation. Out of 41 surviving bacterial isolates, 10 demonstrated notable biodegradation capabilities. The Genus identification revealed that Erwinia sp., Pantoea sp., and Coryneform sp. were among the contributing bacteria. This research emphasizes the potential role of S.exigua-associated symbiotic bacteria in managing chlorpyrifos-resistant pest populations, offering a promising avenue for sustainable pest control methods.

Effectiveness Evaluation of Insecticides Containing Spirotetramat + Abamectin Active Ingredients Against Thrips (Thrips palmi) in Tomato Plants Fitriyah, Vebriyanti; Rachmawati, Rina; Widjayanti, Tita
Journal of Tropical Plant Protection Vol. 6 No. 1 (2025)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtpp.2025.006.1.5

The tomato plant (Lycopersicum esculentum Mill.) is one of the horticultural crops that is frequently cultivated and consumed due to its considerable nutritional value, including vitamins A and C. In the cultivation process, farmers often face problems caused by plant pests, one of which is Thrips (Thrips palmi Karny). This study aims to determine the effectiveness of insecticides containing the active ingredients spirotetramat + abamectin at several concentrations against T. palmi. Research activities were conducted in Pujon District, Malang Regency, and Junrejo District, Batu City, East Java, from April to June 2023. The research used a Randomized Complete Block Design (RCBD) with 5 treatments: spirotetramat + abamectin 1.00 ml/l; 0.75 ml/l; 0.50 ml/l; 0.25 ml/l; and a control. The results showed that the use of spirotetramat + abamectin insecticides at different concentrations affected the average T. palmi population level and yield in tomato plants. Treatment with a concentration of 1.00 ml/l was the most effective, achieving an efficacy index (EI) value of more than 70%.

Diversity of Coleopteran Insects at Horticulture Farmland in Pendem Village Batu City Hastawulan, Anastassia Wita Aryandini; Rachmawati, Rina; Widjayanti, Tita
Journal of Tropical Plant Protection Vol. 6 No. 2 (2025)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtpp.2025.006.2.4

Coleopteran has a remarkable degree of environmental adaptation, allowing it to survive and reproduce in a variety of habitats. Research was conducted to determine the distribution of Coleopteran insects and the influence of commodities on the composition of Coleopteran insects. The research was conducted in May-August 2021 in Pendem Village, Batu City. Sampling is accomplished visually and through the placement of yellow pan traps and pitfall traps on tomatoes, large chili peppers, onions and cucumbers for 9 weeks. The study revealed 15 morphospecies belonging to the families Anthicidae, Carabidae, Chrysomelidae, Coccinellidae, Scarabaeidae, Staphylinidae, and Tenebrionidae which have roles as herbivore, predator and detritivore. In tomato plants 862 individuals were found, in large chili plants 1444 individuals were found, in onions plants 519 individuals were found and in cucumber plants, 697 individuals were found.

Exploration of Symbiotic Bacteria with the Potential to Degrade Chlorpyrifos Insecticide in the Digestive Tract of the Beet Armyworm (Spodoptera exigua) (Lepidoptera: Noctuidae) in Shallot Fields, Probolinggo SyamsulHadi, Mochammad; Restikasari, Viera Annisa; Taufiqurrahman, Achmad Fitriadi; Widjayanti, Tita
Plantropica: Journal of Agricultural Science Vol. 9 No. 2 (2024): Agustus
Publisher : Department of Agronomy, Faculty of Agriculture, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar

The beet armyworm, Spodoptera exigua is a notorious pest that inflicts significant damage to shallot crops, especially leeks, causing leaves to wither due to brown spots and transparency. This issue often leads to excessive chemical control measures, which, in turn, promote insecticide resistance. This study hypothesized that symbiotic bacteria within S.exigua have the capacity to degrade chlorpyrifos-based insecticides. S.exigua samples were collected in Dringu, Gending, and Leces districts, Probolinggo, and subsequently examined for symbiotic bacteria with biodegradation potential. Bacterial exploration and identification were conducted from April to October 2023 at the Pesticide Toxicology Laboratory, Brawijaya University. The study analyzed the clear zone diameter produced by bacteria in media contaminated with chlorpyrifos-based insecticides as an indicator of biodegradation. Out of 41 surviving bacterial isolates, 10 demonstrated notable biodegradation capabilities. The Genus identification revealed that Erwinia sp., Pantoea sp., and Coryneform sp. were among the contributing bacteria. This research emphasizes the potential role of S.exigua-associated symbiotic bacteria in managing chlorpyrifos-resistant pest populations, offering a promising avenue for sustainable pest control methods.

Fluctuation Patterns Spodoptera frugiperda and Its Natural Enemies on Maize Plants With IPM and Conventional Practice in Malang Regency Prayogo, Bagas Agung; Mudjiono, Gatot; Widjayanti, Tita
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.2022.003.2.2

Spodoptera frugiperda (Lepidoptera: Noctuidae) is a pest that originated in the United States and then migrated to Indonesia. This pest reportedly attacked corn in West Pasaman, West Sumatra Province, in 2019. This study aimed to determine the effect of cultivation practice on fluctuations in natural enemies and S. frugiperda. The research was conducted in Pandan Rejo Village, Pagak, Malang Regency. Data from observations of pest populations' natural enemies were then analyzed using simple quantitative analysis. The population and intensity of Spodoptera frugiperda attacks on IPM practices were always lower than those on conventional practices. During observation, there were 2 species of natural enemies, Braconidae and Scelionidae. The parasitoid population in IPM is always higher than in conventional practice. The lower parasitoid population at conventional practice failed to suppress the S. frugiperda population. Farming business analysis calculated using the R/C ratio showed that IPM practice had a value of 1.03 while conventional was only 0.55. IPM practice is feasible and more ecologically friendly than conventional practice.

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

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

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.

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