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All Journal Biodiversitas Journal of Biological Diversity
DADANG DADANG
Department of Plant Protection, Faculty of Agriculture, Institut Pertanian Bogor. Jl. Meranti, Kampus IPB Dramaga, Bogor 16680, West Java, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Soil arthropods and natural enemies' abundances in broccoli crops treated with insecticides MARIA HEVIYANTI; DADANG DADANG; DEWI SARTIAMI; R. YAYI MUNARA KUSUMAH; PURWANTININGSIH PURWANTININGSIH
Biodiversitas Journal of Biological Diversity Vol. 26 No. 4 (2025)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d260420

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Abstract. Heviyanti M, Dadang, Sartiami D, Kusumah RYM, Purwantiningsih. 2025. Soil arthropods and natural enemies' abundances in broccoli crops treated with insecticides. Biodiversitas 26: 1698-1705. Indonesia is known as one of the countries with the highest biodiversity in the world, consisting of a rich variety of flora and fauna across terrestrial and marine ecosystems. However, the excessive and inappropriate use of synthetic insecticides has led to a significant decline in biodiversity, including the death of natural enemies and the disruption of soil microorganisms. An environmentally sustainable alternative for pest control is the application of botanical insecticides. Therefore, this research aimed to assess the effect of the application of 50EC botanical insecticide, a mixture of spike pepper (Piper aduncum) and Chinese perfume (Aglaia odorata) (2:1 w/w) extracts on Plutella xylostella population and the abundance of soil arthropods and natural enemies in broccoli (Brassica oleracea var. italica) crops. Observations of the P. xylostella population were carried out by direct observation on sample plants from the second to the ninth Week After Planting (WAP). The diversity and abundance of soil arthropods and natural enemies were assessed using pitfall traps. The results showed that the 50EC botanical insecticide demonstrated a level of effectiveness comparable to that of synthetic insecticides containing the active ingredient emamectin benzoate and microbial insecticide with an active ingredient of Bacillus thuringiensis in controlling P. xylostella. The number of arthropod individuals obtained was 6,441, belonging to 3 classes, 12 orders, 32 families, and 62 morphospecies. The order Entomobryomorpha was the most abundant, accounting for 37.96% of the total arthropod population. In terms of species richness, the order Hymenoptera was predominant, contributing 25.00% and being largely represented by the Formicidae family. The highest number of arthropod individuals (1748) was recorded in the treatment involving the 50EC botanical insecticide. These findings support the use of botanical insecticides as an eco-friendly pest control solution that can reduce pesticide residues and promote sustainable farming practices.
Application of Gaultheria essential oil attractant to increase abundance zigzag ladybird beetle (Cheilomenes sexmaculata) and other coccinellids SISKA EFENDI; DADANG DADANG; I WAYAN WINASA; ALI NURMANSYAH
Biodiversitas Journal of Biological Diversity Vol. 26 No. 6 (2025)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d260612

Abstract

Abstract. Efendi S, Dadang, Winasa IW, Nurmansyah A. 2025. Application of Gaultheria essential oil attractant to increase abundance zigzag ladybird beetle (Cheilomenes sexmaculata) and other coccinellids. Biodiversitas 26: 2674-2683. Gaultheria essential Oil (GeO) has the potential to be used as an attractant for Cheilomenes sexmaculata because of its high Methyl Salicylate (MeSA) content. The research aimed to evaluate the effectiveness of GeO attractant against C. sexmaculata and its effect on other coccinellids. The tested GeO attractant doses were 0.25 mL, 0.5 mL, 1 mL, and 2 mL/dispenser. The data was analyzed with the Kruskal-Wallis non-parametric median test, with a Mann-Whitney post-test corrected Holm test. The analysis uses the ggstatsplot package version 0.13.0 in R Studio software version 4.4.2. The causal relationship between attractants, abundance, coccinellid richness, and chili (Capsicum annuum) yield was analyzed using a Structural Equation Model (SEM). The results showed that GeO attractant affects the abundance of C. sexmaculata. The attractant GeO also accelerates the presence of C. sexmaculata in chili crops. In addition, GeO attractants also affect the abundance of other predatory coccinellids, namely Micraspis lineata, Harmonia decussata, Coelophora maculata, Coleophora inaequalis, Scymnus sp., Curinus coeruleus, Coccinella transversalis, and Cryptolaemus montrouzieri. The application of GeO attractants, abundance of C. Sexmaculata and Aphis gossypii are directly and significantly related to chili yield. GeO attractant can be a new component of Integrated Pest Management (IPM) to control A. gossypii in chili cultivation.
Field evaluation of botanical and synthetic insecticides against fall armyworm in maize HAMDAN MARULI SIREGAR; DADANG DADANG; DEWI SARTIAMI; I WAYAN WINASA; ELI ZULKATRI
Biodiversitas Journal of Biological Diversity Vol. 26 No. 10 (2025)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d261027

Abstract

Abstract. Siregar HM, Dadang, Sartiami D, Winasa IW, Zulkatri E. 2025. Field evaluation of botanical and synthetic insecticides against fall armyworm in maize. Biodiversitas 26: 5125-5131. Fall armyworm (Spodoptera frugiperda) has emerged as a significant threat to maize production in Indonesia, leading to significant yield losses and ecological risks in control practices due to the overreliance on synthetic insecticides. This study aimed to evaluate the effects of botanical and synthetic insecticide applications on the population abundance and attack intensity of S. frugiperda, as well as their impact on parasitoid parasitism rate. The field experiment was conducted at the Sawah Baru Experimental Farm, IPB University, during the vegetative stage using a Randomized Block Design (RBD) with seven blocks and three treatments. These treatments include a botanical insecticide formulated as a 50 Emulsifiable Concentrate (EC) from a hexane extract mixture of Piper retrofractum fruits and Annona squamosa seeds (2:1 w/w), a synthetic insecticide (emamectin benzoate 30 EC), and a control. The data was analyzed using the Kruskal-Wallis test and Structural Equation Modeling (SEM) in R Studio version 4.4.2. The results showed that both insecticides effectively reduced the population abundance and attack intensity of S. frugiperda, with the synthetic insecticide exhibiting higher efficacy. However,  the botanical insecticide was found to be relatively safer for parasitoids. These findings emphasize the potential of botanical insecticides as a promising and ecologically safer alternative for pest control, suitable for integration into Integrated Pest Management (IPM) strategies, thereby supporting a more sustainable approach to maize production.
Co-Authors ALI NURMANSYAH DEWI SARTIAMI ELI ZULKATRI HAMDAN MARULI SIREGAR I WAYAN WINASA MARIA HEVIYANTI PURWANTININGSIH PURWANTININGSIH R. YAYI MUNARA KUSUMAH SISKA EFENDI