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Perbandingan keanekaragaman spesies dan kelimpahan arthropoda predator penghuni tanah di sawah lebak yang diaplikasi dan tanpa aplikasi insektisida Herlinda, Siti; Waluyo, Waluyo; Estuningsih, S. P.; Irsan, Chandra
Jurnal Entomologi Indonesia Vol 5, No 2 (2008): September
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.5.2.96

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Studies on soil-dwelling predatory arthropods were carried out in lowland areas of South Sumatra, with objectives to analyze the species diversity and abundance of the predatoryarthropods inhabiting fields applied by synthetic insecticide, bioinsecticide, and without insecticide application. The predatory arthropods were sampled using pitfall traps. Indices of diversity and community similarities were applied to analyze the data. Results indicated that the arthropods inhabiting field without insecticide application had the highest diversity and abundance compared to other treatments. Predatory community similarities between those on the field without insecticide application and applied by bioinsecticide were higher compared to the fields applied by synthetic insecticide.
Analisis kemiripan komunitas artropoda predator hama padi penghuni permukaan tanah sawah rawa lebak dengan lahan pinggir di sekitarnya Effendy, Effendy; Hety, Usna; Herlind, Siti; Irsan, Chandra; Thalib, Rosdah
Jurnal Entomologi Indonesia Vol 10, No 2 (2013): September
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.10.2.60

Abstract

There are approximately 1.4 million hectares of swampy area in South Sumatera, but only 12% of those are being used as farm and plantation.   The purpose of this research was to investigate the similarity of arthropod community inhabiting swampy rice field and its surrounding area. This research was conducted in South Sumatera Province covering regency of Musi Banyuasin and Palembang. Four types of swampy area were selected from each location, i.e. rice field, thicket, bush, and swampy land inhabited by broad-leaf weeds. Pitfall trap used to collect arthropod and it installed at five different times. i.e. 15 days before rice planting, one month, two months, and three months after planting, and 15 days after harvest time. The result showed that relative abundance of predatory arthropod dwelling soil in rice field was 95.03%, and habitat surrounding rice field was 95.12–97.21%. The level of similarity of arthropod species between rice field ecosystem and its surrounding area ranged from 0.73 to 0.84.   Thus, the surrounding area of rice field probably can be used as catchment area of predatory arthropod and other pests during planting season.
Studi keberadaan hiperparasitoid dalam mempengaruhi perilaku imago parasitoid pada kutudaun, Aphis gossypii (Hemiptera: Aphididae) Irsan, Chandra
Jurnal Entomologi Indonesia Vol 5, No 1 (2008): April
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.5.1.17

Abstract

Study Hyperparasitoid Existing Affected to Adul Parasitoid Behavior on Aphid, Aphis gossypii (Hemiptera: Aphididae). In general, hyperparasitoid is needed for establishing food and chain webs, but in contrary, it could become a limiting factor in existing biological control program. An observation to aim positive impact of hyperparasitoid existence has been carried out. Chili plant, Capsicum annuum, Aphis gossypii, Trioxys sinensis parasitoid and Aphidencyrtus sp. were used in this observation. Results showed that hyperparasitoid existence assisted parasitoid distribution. Parasitoids were placed with hyperparasitoids enhanced parasitoid distribution or dispersion two times farther compare to without hyperparasitoids. It was concluded that dispersal behaviour of hyperparasitoid adult was a parasitoid adult’s response to avoid its suppression by the hyperparasitoid and also increase parasitoid’s searching ability.
KOMBINASI LARVA LALAT BUNGA (HERMETIA ILLUCENS L.) DAN PELET UNTUK PAKAN IKAN PATIN JAMBAL (PANGASIUS DJAMBAL) Hariadi, Soikar; Irsan, Chandra; Wijayanti, Marini
Jurnal Akuakultur Rawa Indonesia Vol 2, No 2 (2014): JURNAL AKUAKULTUR RAWA INDONESIA
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (302.407 KB) | DOI: 10.36706/jari.v2i2.2091

Abstract

ABSTRACT The objective of study was to know the effect of combination of black soldier fly larva and pellet for growth and survival rate of Pangasius djambal and also to know the optimal food proportion combination of black soldier fly larva and pellet for growth and survival rate of P. djambal. The experiment was arranged has been done for 56 days in the Jambi Freshwater Aquaculture Development Center (JFADC). Fish that used were P. djambal with average weight of 10.17 g. They were placed in aquarium size 100x50x40 cm3 with the density 10 fish/aquarium. The experiment was arranged in a completly randomized design (CRD) with five treatments. Food combination tested were as follows : P1 (100% pellet), P2 (75% pellet and 25% black soldier fly larva), P3 (50% pellet and 50% black soldier fly larva), P4 (25% pellet and 75% black soldier fly larva), P5 (100% black soldier fly larva). The measured parameters were daily growth rate, food convertion ratio, protein efficiency ratio and survival rate of P. djambal. The result of this current experiment indicated that combination of black soldier fly and pellet influenced daily growth rate, food convertion ratio, protein efficiency ratio, but not influenced survival rate of P, djambal. The optimal food combination proportion wich gave the best daily growth rate, food convertion ratio, protein efficiency ratio was 97.0-82.5% pellet and 17.5-21.0% black soldier fly larva. The survival rate of P. djambal for all treatment was 100%. Keywords: Pangasius djambal, growth, survival rate, black soldier fly larva, feed
KERAGAMAN FLORA DI LAHAN REKLAMASI PASCA TAMBANG BATUBARA PT BA SUMATERA SELATAN Riswan, Riswan; Harun, Umar; Irsan, Chandra
Jurnal Manusia dan Lingkungan (Journal of People and Environment) Vol 22, No 2 (2015)
Publisher : Pusat Studi Lingkungan Hidup Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1.84 KB)

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Penelitian dilaksanakan di lahan reklamasi Air Laya, tambang batubara PT BA Tanjung Enim pada Januari sampai Maret 2013. Tujuan penelitian ini adalah untuk mengetahui struktur dan komposisi flora pada lahan reklamasi pascatambang batubara, PT BA, Tanjung Enim. Petak contoh diletakkan pada lahan reklamasi yang berumur 20, 15, 10 dan 1 tahun. Petak contoh di buat enam petak empat persegi secara net sampling, di mana untuk pohon berukuran 20 m x 20 m; tiang berukuran 10 m x 10 m; pancang berukuran 5 m x 5 m; dan semai dibuat empat persegi berukuran 2 m x 2 m. Hasil penelitian menunjukkan bahwa jenis flora yang dominan pada tingkat pohon dan sebagian pada tingkat pancang pada berbagai umur reklamasi adalah Acacia auriculiformis. Pada tingkat tiang flora jenis jati (Tectona grandis) adalah jenis flora tingkat tiang yang hanya ditemukan pada plot umur 20 tahun dan jenis A. auriculiformis dan Eucalyptus deglupta pada plot umur 15 tahun. Sengon (Paraserianthes falcataria) mendominasi pada tingkat pancang pada plot umur 1 tahun. Beberapa jenis flora indigen yang dapat ditemukan di lahan bekas tambang batubara yaitu Leban (Vitex pinnata) dan Keliat (Syzygium spp.) serta Suket kudalang (Oplismenus burmannii) pada tingkat flora bawah yang tumbuh liar. Dominansi oleh flora introduksi (A. auriculiformis) pada berbagai plot umur reklamasi menurunkan flora indigen. Hal ini bisa dilihat dari nilai INP tertinggi secara umum didominasi oleh akasia berdaun kecil (A. auriculiformis) pada umur 20, 15 dan 10 tahun setelah reklamasi tambang. 
TINGKAT PARASITISASI DAN DESKRIPSI PARASITOID YANG MEMARASIT APHIS GOSSYPII (GLOVER) (HEMIPTERA: APHIDIDAE) ASAL AGROEKOSISTEM DATARAN RENDAH DAN DATARAN TINGGI SUMATERA SELATAN Riyanto, Riyanto; Herlinda, Siti; Umayah, Abu; Irsan, Chandra
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol 3, No 1 (2014)
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (645.631 KB) | DOI: 10.33230/JLSO.3.1.2014.47

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The parasitic level research and description of the parasitoid species which were parasitic towards Aphis gossypii (Glover) (Hemiptera : Aphididae ) origin the agroecosystem of the lowland and highland of South Sumatra has not been reported, although this information is needed as a foundation of biological control of A. gossypii in South Sumatra. The purpose of this study was to determine the parasitic level and provide information about the description of the parasitoid which were parasitic towards A. gossypii origin the agroecosystem of the lowland and highland of South Sumatra. Survey and exploration the parasitoid which were parasitic towards A. gossypii conducted at 11 sites in South Sumatra vegetable center.  The identification of parasitoid species was conducted in the laboratory of Entomology Department of the Faculty of Agriculture University of Sriwijaya. The results showed the parasitic level of Aphidius sp. and Diaeretiella rapae was higher during the dry season in both lowland and highland compared to the parasitic level of Aphelinus sp. However, Aphelinus sp. could only spread in the lowland. The main characteristics of Aphidius sp. (Aphidiidae) has shaped antennae filiform and segmented 13. The front wings have a triangular pterostigma. D. rapae, (Aphidiidae) has shaped antennae filiform and segmented 14. The front wings has a triangular pterostigma. The hind wing has a perfect basal cells. Aphelinus sp. (Aphelinidae) has an shaped goblets antennae and eight segmented and the last segments three of the antennae enlarged or club. Marginal venation long wings, while the venation postmarginal and stigma reduction. In addition there are two species of hyperparasitoid which were found to be parasitic towards parasitoid A. gossypii, were Ooencyrtus sp. and Aphiidencyrtus sp. (Encyrtidae) especially in the lowland.
APLIKASI EKSTRAK KOMPOS MENINGKATKAN HASIL DAN MENEKAN PENYAKIT PADI SISTEM RATUN DI SAWAH PASANG SURUT KABUPATEN BANYUASIN Suwandi, Suwandi; Ammar, Muhammad; Irsan, Chandra
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol 1, No 2 (2012)
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (407.394 KB) | DOI: 10.33230/JLSO.1.2.2012.15

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Suwandi et al. 2012. Application of Extract Compost Increased Yield and Suppressed the Diseases of Ratoon Rice Crop in Tidal Swamp of Banyuasin Regency. JLSO 1(2):116-122.A field study was conducted to test the effects of the biofertilizer preparations on yield and diseases of ratoon rice crop in the reclaimed tidal swamp of Telang II, Banyuasin Regency of South Sumatra. The biofertilizer were prepared either as dormant inoculant in liquid formulation or active inoculant in compost extract. Both preparations contain chitinolytic, cellulolytic and phosphate solubilizing bacterial community. The result showed that the yield of ratoon crops of Ciherang rice variety in the suboptimal land increased by 67% (923 kg/Ha) in response to single spraying of the compost extract. The ratoon sprayed with the compost extract had a lower incidence of neck blast and panicle blight and produced less empty grains compared to non-sprayed control. The application of extract compost appears to be a feasible method for increasing production of ratoon rice in tidal swamps.
UJI KISARAN INANG PENYAKIT DOWNY MILDEW (PSEUDOPERONOSPORA CUBENSIS) DAN ANTRAKNOSA (COLLETOTRICHUM SP.) PADA BEBERAPA TANAMAN CUCURBITACEAE Anggraini, Erise; Muslim, A.; Zuriana, Azizah; Irsan, Chandra; Gunawan, Bambang
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol 7, No 2 (2018): JLSO
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1793.543 KB) | DOI: 10.33230/JLSO.7.2.2018.368

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Anggraini et al, 2018. Host-Range Analysis of Downy Mildew (Pseudoperonospora cubensis) and Anthracnose (Colletotrichum Sp.) on some Cucurbitaceae Plants. JLSO 7(2):213-224. Inhibiting factors of cucumber cultivation is Downy mildew disease that is caused by Pseudoperonospora cubensis and Anthracnose by Colletotrichum sp. The objective of this research was to observe pathogenicity of activity caused by Pseudoperonospora cubensis and Colletotrichum sp. isolated from cucumber towards Cucurbitaceae plants. The research was conducted at greenhouse and Phytopathology Laboratory, Department of Plant Pests and Diseases Faculty of Agriculture, University of Sriwijaya in September to December 2016. This study used Randomized Block Design (RBD), with four types of plants, 2 treatments and 4 replications. The results showed that the incubation period of the plant inoculation Downy mildew by Pseudoperonospora cubensis range between 4.5-5.0 days. Result of broadest spot area was on melon leaf 2.05 cm2 with the chlorophyll content of 0.4928 mg/g and the lowest result was on cucumber leaf 0.90 cm with the chlorophyll content of 0.7628 mg/g. While the results showed that the incubation period of the applied plant pathogen Colletotrichum sp. ranging from 3.0-4.5 days. Result of broadest spot area was on melon leaf 4.00 cm2 with the chlorophyll content of 0.3932 mg/g and the lowest result was on cucumber leaf 2.42 cm2 with the chlorophyll content of 0.7588 mg/g.
ARTROPODA PREDATOR PENGHUNI EKOSISTEM PERSAWAHAN LEBAK DAN PASANG SURUT SUMATERA SELATAN Khodijah, Khodijah; Herlinda, Siti; Irsan, Chandra; Pujiastuti, Yulia; Thalib, Rosdah
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol 1, No 1 (2012)
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (439.668 KB) | DOI: 10.33230/JLSO.1.1.2012.8

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Khodijah, S. Herlinda, C. Irsan, Y. Pujiastuti, R. Thalib. 2012. Predatory Arthropods InhabitingFresh Swamp and Tidal Lowland Ecosystem in South Sumatra. J. Lahan Suboptimal 1(1):57-63 Research of predatory arthropods inhabiting fresh swamp and tidal land ecosystem in South Sumatra used survey method. The objective of this reasearch was to identify families of the predatory arthropods found in the fresh swamp and tidal land ecosystem in South Sumatra. Survey occured in January up to March 2012. The predatory arthropods were sampled using net and pitfall trapping. The predatory arthropods found were Insecta and Arachnida. Ordo of predatory insects found were Coleoptera, Dermaptera, Diptera, Hemiptera, Orthoptera, Odonata, and Hymenoptera, while predatory spiders found were ordo Araneae. Predatory arthropods inhabiting paddy canopy were almost trapped by net traps, while soil dwelling arthropods were trapped by pitfall traps. The dominant predatory insects found were families of Carabidae and staphylinidae, while dominant family of spiders was Lycosidae. Key species of the predatory artrhopods found from the fresh and tidal land ecosystem were Pheropsophus occipitalis, Paederus fuscipes, Coccinella arcuata, Pardosa pseudoannulata, Oxyopes sp., Pardosa sumatrana, Verania lineata, Broscus sp., and Chelisoches sp.
POPULASI SERANGGA HAMA DAN ARTROPODA PREDATOR PADA PADI RAWA LEBAK SUMATERA SELATAN YANG DIAPLIKASIKAN BIOINSEKTISIDA DARI BEAUVERIA BASSIANA DAN INSEKTISIDA SINTETIK Hanif, Khoirul Ikhsanudin; Herlinda, Siti; Irsan, Chandra; Karenina, Tili; Anggraini, Erise; Suwandi, Suwandi; Susilawati, Susilawati
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol 8, No 1 (2019): JLSO
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (505.028 KB) | DOI: 10.33230/JLSO.8.1.2019.378

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Hanif et al, 2019. Population of Pest Insects and Predatory Arthropods Inhabiting Freshwater Swamp Rice of South Sumatra Treated with Bioinsectide of Beauveria bassiana and a Synthetic Insecticide. JLSO (8)1:31-38.Entomopathogenic fungi, Beauveria bassiana, could  kill various species of insect pests, but  their impact on predatory arthropods needs to be studied. The aim of this study was to compare population of pest insects and predatory arthropods inhabiting rice sprayed with bioinsecticide of B. bassiana and conventional rice field using a synthetic insecticides. Bioinsecticide was made from conidia of B. bassiana and sprayed on rice canopy. The plot of conventional farmers was sprayed with synthetic insecticides made from Abamektrin. The results showed that the application of bioinsecticide of B. bassiana was not proven to reduce the pest insect population. The abundance of natural enemies of pest insects, such as  spiders and predatory insects was also more abundant in plots sprayed with  bioinsecticide than conventional plots that used synthetic insecticide. The synthetic insecticides have been shown to reduce the abundance of predatory insects and spiders. Bioinsecticides containing carrier of  liquid compost were proven to increase the growth and development of rice, which was an increase in the number of rice tillers per clump in plots applied by bioinsecticide. Thus, B. bassiana of bioinsecticide with liquid compost carrier material was safer and could maintain the abundance of predatory arthropods and increased rice growth.