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CHANDRA IRSAN
Department of Plant Protection, Faculty of Agriculture, Universitas Sriwijaya. Jl. Raya Palembang-Prabumulih Km 32, Indralaya, Ogan Ilir 30662, South Sumatra, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Natural enemies of Pentalonia nigronervosa, vector of Banana Bunchy Top Virus TITI TRICAHYATI; SUPARMAN SUPARMAN; CHANDRA IRSAN
Biodiversitas Journal of Biological Diversity Vol. 23 No. 7 (2022)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d230745

Abstract

Abstract. Tricahyati T, Suparman, Irsan C. 2022. Natural enemies of Pentalonia nigronervosa, vector of Banana Bunchy Top Virus. Biodiversitas 23: 3675-3684. Pentalonia nigronervosa (Coquerel) is an important pest of banana. Instead of sucking liquid from banana phloem, P. nigronervosa also play an important role in transmitting Banana Bunchy Top Virus (BBTV) from infected banana to healthy ones. If efforts are not made to control the aphid, existence of P. nigronervosa can increase in the banana field. The objective of this research was to find out the natural enemies of P. nigronervosa which may play significant role in controlling the aphid naturally. The results showed that natural enemies were in the forms of predator, parasitoid and pathogenic fungi. A total of 22 species of predator belonged to 5 families of insect, namely Coccinellidae, Forficulidae, Chelisochidae, Reduviidae and Syrphidae, and 4 families of Arachnida i.e. Oxyopidae, Araneidae, Salticidae, and Philodromidae. The result exhibited that one parasitoid belonged to family Brachonidae, and one hyper-parasitoid belonged to family Encrytidae. Furthermore, it was also observed that 3 species of entomopathogenic fungi infected aphids. The fungi belonged to genera Aspergillus and Beauveria. Each predator had different predation capacity, the highest was that of Forficula auricularia (23.67 ± 3.05) and Scymnus sp. (23.67 ± 1.52). Parasitoid Lipolexis bengalensis could parasitize P. nigronervosa at relatively high parasitic ability of 4.67 ± 23.65. The finding of various natural enemies of P. nigronervosa in South Sumatra could be considered as an alternative way to control the aphid and reduce the transmission rate of BBTV in the province. The use of natural enemies has no residual effects on the environment and is relatively cheaper compared to other control measurements.
Species diversity and abundance of parasitoids of fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) from South Sumatra, Indonesia SITI HERLINDA; SUWANDI SUWANDI; CHANDRA IRSAN; RIAN ADRIAN; FAIRUZ FAWWAZI; FAIZ AKBAR
Biodiversitas Journal of Biological Diversity Vol. 24 No. 11 (2023)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d241140

Abstract

Abstract. Herlinda S, Suwandi S, Irsan C, Adrian R, Fawwazi F, Akbar F. 2023. Species diversity and abundance of parasitoids of fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) from South Sumatra, Indonesia. Biodiversitas 24: 6184-6190. The parasitoid species attacking Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) have never been reported from South Sumatra. The objectives of this research were to identify and analyze the species diversity of egg and larval parasitoids of S. frugiperda and to determine their abundance in corn fields from South Sumatra. Surveys were carried out in Ogan Komering Ilir District, Ogan Ilir District, Muara Enim District, and Palembang City. The results showed that fourteen species of parasitoids were found attacking eggs and larvae of S. frugiperda in South Sumatra. Two species were egg parasitoids (Telenomus remus (Nixon) and Trichogramma sp.), and 12 species of larval parasitoids (Chelonus formosanus Sonan, Chelonus oculator F., Chelonus annulipes Wesm., Chelonus cautus (Cresson), Microplitis manilae Ashmead, Microplitis marshallii Kokujev, Euplectrus corriemoreauae Hansson, Compsilura concinnata (Meigen), Sarcophaga sp., Macrocentrus sp., Exorista sp., and Megaselia sp.). The most abundant species of the parasitoids found was T. remus. The highest species diversity was found in Muara Enim District. The number of parasitoid species was greater in the dry season compared to the rainy season. Egg parasitism rates were significantly higher at the corn vegetative stage (59.03%) compared to the generative stage (53.56%).
The suppression of Ganoderma boninense on oil palm under mixed planting with taro plants SUWANDI SUWANDI; MONICA ALESIA; RUDI PUTRA MUNANDAR; RAHMAD FADLI; SUPARMAN SUPARMAN; CHANDRA IRSAN; A. MUSLIM
Biodiversitas Journal of Biological Diversity Vol. 25 No. 3 (2024)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d250329

Abstract

Abstract. Suwandi S, Alesia M, Munandar RP, Fadli R, Suparman S, Irsan C, Muslim A. 2024. The suppression of Ganoderma boninense on oil palm under mixed planting with taro plants. Biodiversitas 25: 1143-1150. Basal stem rot, caused by Ganoderma boninense, is highly destructive in monoculture oil palm plantations. This study evaluated Ganoderma boninense infections and oil palm growth in mixed plantings of oil palm seedlings and taro plants (Japanese, Bogor, and Indralaya taro). Ganoderma, colonizing rubber wood blocks, was inoculated into mixed plants, and the infection was compared to single-inoculated oil palm and taro plants. The interference of mixed planting with taro plants on the growth of oil palm seedlings was compared between inoculated and noninoculated mixed and single planting. Ganoderma inoculation caused simultaneous disease (dual-host infection) in mixed oil palm and taro plants. Ganoderma infection was less severe in taro plants compared to oil palm, whether in single or mixed planting. Over six months, oil palm root necrosis and disease index were reduced by 82% to 96% and 65% to 71%, respectively, while no significant effect was observed at nine months. The decay of Ganoderma-colonized wood improved by 44.1% to 84.0% in mixed planting, with no significant impact on mycelium viability. Taro plants did not inhibit oil palm growth, including plant height, leaf area, and relative growth rate of primary root length, in both the presence and the absence of Ganoderma infection. This study highlights the potential of mixed planting with taro to reduce Ganoderma disease in oil palm.
Insect pollinators of oil palm plantations in South Sumatra, Indonesia SITI HERLINDA; JELLY MILINIA PUSPITA SARI; WEI HONG LAU; ERISE ANGGRAINI; CHANDRA IRSAN; DELLANIA EKA RINDIANI; NOVRI NELLY; LISNAWITA LISNAWITA; RADIX SUHARJO
Biodiversitas Journal of Biological Diversity Vol. 26 No. 11 (2025)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d261120

Abstract

Abstract. Herlinda S, Sari JMP, Lau WH, Anggraini E, Irsan C, Rindiani DE, Nelly N, Lisnawati, Suharjo R. 2025. Insect pollinators of oil palm plantations in South Sumatra, Indonesia. Biodiversitas 26: 5595-5611. Information on insect pollinator species of oil palm is crucial for management strategies that support sustainable production. This study aimed to identify pollinator insect species found in South Sumatra, Indonesia, and analyze their species diversity and abundance. Pollinators were sampled from male and female inflorescences at four time intervals (08:00-09:59 a.m., 10:00-11:59 a.m., 02:00-03:59 p.m., and 04:00-05:59 p.m.) using anthesis-based collection methods. The result showed that Elaeidobius kamerunicus and Elaeidobius spp. were the most common insect pollinators in oil palm production areas, occurring from lowland to midland regions. These species were present on both male and female inflorescences but were more abundant on male inflorescences, with peak activity recorded between 8:00 a.m. and 11:59 a.m. Apis mellifera and A. dorsata were also observed on both male and female inflorescences, though their activity was generally limited to the morning and midday periods. All species (E. kamerunicus, Elaeidobius spp., A. mellifera, and A. dorsata) are potential pollinators, as their visitation of both male and female inflorescences facilitates pollen transfer to the female flowers. Considering the continuous activity of E. kamerunicus and Elaeidobius spp. throughout the day, the use of contact insecticides in oil palm plantations should be avoided to reduce adverse impacts on pollinator populations. These findings provide baseline data for designing pollinator-friendly management practices in Indonesia's oil palm sector.
Co-Authors A. MUSLIM DELLANIA EKA RINDIANI ERISE ANGGRAINI FAIRUZ FAWWAZI FAIZ AKBAR JELLY MILINIA PUSPITA SARI LISNAWITA LISNAWITA MONICA ALESIA NOVRI NELLY RADIX SUHARJO RAHMAD FADLI RIAN ADRIAN RUDI PUTRA MUNANDAR SITI HERLINDA SUPARMAN SUPARMAN SUPARMAN SUPARMAN SUWANDI SUWANDI TITI TRICAHYATI WEI HONG LAU