Dewi Meidalima
College of Agricultural Sciences Sriwigama Jl. Demang IV, Demang Lebar Daun Lorok Pakjo Palembang

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Pengaruh Tumbuhan Liar Berbunga terhadap Tanaman Tebu dan Keberadaan Parasitoid di Pertanaman Tebu Lahan Kering, Cinta Manis Sumatera Selatan Meidalima, Dewi
Jurnal Lahan Suboptimal Vol 2, No 1 (2013)
Publisher : Jurnal Lahan Suboptimal

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Abstract

Sugarcane is one of commodity plants that can grow well in dry land. Sugarcane plantation area at Cinta Manis is approximately 25,000 hectares. The purposes of this study were  to determine the effect of wild flowering plants on sugarcane and the presence of parasitoids.  This study was conducted in PTPN VII Cinta Manis  South Sumatra, from February to September 2012. The results indicated that wild flowering plants in Cinta Manis sugarcane plantations consisted of 28 families and 91 species. Observation and identification of wild  flowering  plants conducted on 1 ha plot obtained as many as 23 species, 8 of which are the most dominant species, namely Borreria alata, mitracarpus hirtus, Cyperus tunuiculmis, Cyperus plavipus, Richardia brasiliensis, Cleoma rutidosperma, Ageratum conyzoides, and  Spermacoce remota. The presence of wild flowering plants had no effect on weight, length, diameter and number of segments of sugarcane. Number of egg parasitoids of sugarcane pests found on land with and without the wild flowering plants as much as 1,489 and 1,508 pieces respectively. Number of parasitoids  larvae were found on the land with and without the wild flowering plants as much as 343 pieces and 234 pieces respectively.
Kerusakan Pucuk Tebu oleh Scirpophaga nivella (F.) di Pertanaman Tebu Lahan Kering, PTPN VII Cinta Manis Meidalima, Dewi; Kawaty, Ruarita Ramadhalina
Jurnal Lahan Suboptimal Vol 3, No 2 (2014)
Publisher : Jurnal Lahan Suboptimal

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Abstract

The biggest obstacle sugarcane in Indonesia, including in South Sumatra and centers Cinta Manis sugar cane plantations that attack shoot borer (Scirpophaga nivella (F.). The study was conducted from July to December 2012 in PTPN VII Cinta Manis South Sumatera. One ha land observation area. Observation plots were divided into 5 plot diagonally into 5 plots each measuring 200 m2 with a population of approximately 1500 sugarcane stalks, performed every 2 weeks old plants of 1.5 months to 6.5 months. The research purposes were observing damage of sugarcane shoots by shoot borer (Scirpophaga nivella). Experimental research methods, data were collected purposively and directly at the affected plants. Hoist length formed by shoot borers from leaves to growing points was the 18.47 cm. Place of imago out mostly on the 3rd and 4th segment. Length of drilled stem was 8.20 cm. Damage caused by shoot borer could made totally dead or made siwilan on sugarcane.
Patogenisitas Isolat Beauveria bassiana dan Metarhizium anisopliae asal Tanah Lebak dan Pasang Surut Sumatera Selatan untuk Agens Hayati Scirpophaga incertulas Thalib, Rosdah; Fernando, Redi; Khodijah, .; Meidalima, Dewi; Herlinda, Siti
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 13, No 1 (2013): Maret, Jurnal Hama dan Penyakit Tumbuhan Tropika
Publisher : Universitas Lampung

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Pathogeicity of Beauveria bassiana and  Metarhizium anisopliae Isolates from Fresh Swamp and  Tidal Lowland, South Sumatra for Scirpophaga incertulas Biological Agents.  The objectives of the research weret o explore and to determine the pathogenicity of entomopathogenic  fungi againts the larvae of Scirpophaga incertulas, and to measure conidial viability and density of the fungi.  The method for fungi exploration used larvae of Tenebrio molitor baiting submerged in the soil.  The soil was taken from fresh swampand tidal lowland rice in South  Sumatra.  From the exploration study, we found two species of entomopathogenic fungi: Beauveria bassiana and Metarhizium anisopliae. Mortality of S. incertulas larvae that had been treated topically with fungal conidia (1x106 conidia ml-1) varied among the isolates. The highest mortality (98.33%) caused by BPlus isolate of B. Bassiana and the lowest by MtmIn  isolate of M. anisopliae (57.50%) and BTmTr  isolate of B. bassiana (57.50%).  The fungal colonies grew fast from the second day up to the fourth day after incubation but the growth became slow after the fifth day.  The highest conidial density was resulted by   BPcMs of B. bassiana isolate (63.33x106 conidia ml-1) but  this density was not significantly different from that of the BPlus  of B. bassiana isolate (63.11x106 conidia ml-1).  The lowest conidial density found in BTmTr of B. bassiana isolate (20.97x106 conidia ml-1) .   The isolate B. bassiana was more effective than M. anisopliae againt the larvae of S.incertulas.
Parasitoid Hama Penggerek Batang dan Pucuk Tebu di Cinta Manis, Ogan Ilir Sumatera Selatan Meidalima, Dewi
Biosaintifika: Journal of Biology & Biology Education Vol 6, No 1 (2014): March 2014
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

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Abstract

Serangan hama penggerek tebu siap panen sebesar 11,25% di Cinta Manis tahun 2007. Lahan pengamatan 1 ha di bagi menjadi 5 petak secara diagonal, masing-masing seluas 200 m2, populasi tanaman sebanyak 1500 batang. Tujuan penelitian mengetahui keanekaragaman, spesies parasitoid dan potensi parasitasinya. Ditemukan 3 spesies parasitoid telur (Trichogramma chilonis; Telenomus dignoides; Tetrastichus schoenobii) dan 3 spesies parasitoid larva (Rachonathus scirpophagae; Stenobracon nicevillei; Diatraeophaga striatalis). Parasitisasi parasitoid telur penggerek pucuk di lahan dengan dan tanpa tumbuhan liar oleh Telenomus dignoides, Tetrastichus schoenobii, Trichogramma chilonis sebesar 6,96% dan 80,48%; 29,13% dan 15,22%; 0% dan 0,71%. Parasitisasi parasitoid telur penggerek batang di lahan dengan dan tanpa tumbuhan liar oleh Tetrastichus schoenobii sebesar 48,88% dan 36,08%, Telenomus dignoides sebesar 29,35% dan 28,34%. Parasitisasi parasitoid larva penggerek pucuk di lahan dengan dan tanpa tumbuhan liar oleh Rachonothus scirpophagae sebesar 2,66% dan 1,59%, dan Stenobracon nicevillei sebesar 1,81% dan 0,99%. Parasitisasi parasitoid larva penggerek batang (Diatraeophaga striatalis), di lahan dengan dan tanpa tumbuhan liar sebesar 32,23% dan 19,62%. Keanekaragaman spesies parasitoid telur (H=0,627)dan larva penggerek pucuk (H=0,686) tertinggi pada lahan dengan tumbuhan liar. Keanekaragaman spesies parasitoid telur penggerek batang tertinggi pada lahan tanpa tumbuhan liar adalah H=0,686.During 2007 in Cinta Manis area, the attack of borers on readily harvested sugarcane reached 11.25%. A 1-ha observation field was divided diagonally into 5 plots, each with an area of 200 m2, and populated with 1,500 plants. The aims of this study were to know the diversity of parasitoids species and their parasitic potentials. As many as 3 species of parasitoid eggs (Trichogramma chilonis; Telenomus dignoides; Tetrastichus schoenobii) and 3 species of parasitoid larvae (Rachonathus scirpophagae; Stenobracon nicevillei; Diatraeophaga striatalis) have been found. The parasitization of shoot borer egg parasitoids (Telenomus dignoides, Tetrastichus schoenobii, Trichogramma chilonis) in the field with and without wild plants were 61.96% and 80.48%; 29.13% and 15.22%; 0% and 0.71%, respectively. The parasitization of stem borer egg parasitoids of Tetrastichus schoenobii in the field with and without wild plants were 48.88% and 36.08%, respectively, and of Telenomus dignoides were 29.35% and 28.34%, respectively. The parasitization of shoots borer larval parasitoids of Rachonothus scirpophagae in the field with and without wild plants were 2.66% and 1.59%, respectively, and of Stenobracon nicevillei were 1.81% and 0.99%, respectively. Parasitization of larvae parasitoid stem borer (Diatraeophaga striatalis) in the field with and without the wild plants were 32.23% and 19.62%, respectively. The highest diversity of eggs (H=0.627) and larvae (H=0.686) of shoot borer parasitoid species were in the field with wild plants. The highest diversity of egg stem borer parasitoid species in the field without wild plants was H=0.686.
The Diversity of Arthropods Predator on Wild Plant of Rice Field with and without Pesticides Meidalima, Dewi; Kawaty, Ruarita Ramadhalina; Gunawan, Erlan B.
Biosaintifika: Journal of Biology & Biology Education Vol 9, No 1 (2017): April 2017
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

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Contaminated- agro ecosystem influences abundance and diversity of arthropods. The aims of this study were to analyze the diversity and abundance of pre-planting arthropod predators on wild plants in rice field with and without application of pesticides. The survey and direct observation of wild plants at the rice filed were conducted from January to March 2015, at 1 ha in Pemulutan and 1 ha in Musi 2 Palembang. Sampling of arthropod predator was conducted 8 times before the rice was grown, using insect nets. On the land without pesticide application was found 14 arthropod families which consists of 28 species and 15 families of wild plant consists of 25 species. On the land with pesticide application was found 8 arthropod families consists of 16 species and 15 wild plant families with 23 species. On the land without pesticide application was found High index of diversity (H=3.121) and low dominance (D=0.095), while on the land with pesticide application low index of diversity (H=2.602) and high dominance (D=0.171). It is the indicators of arthropods predator more varieties at the land without pesticide application compare to the land with pesticide application. This finding is very important for biological pest management in South Sumatra.
Kelimpahan dan Keanekaragaman Spesies Laba-laba Predator Hama Padi Ratun di Sawah Pasang Surut Herlinda, Siti; Manalu, Hendri Candro Nauli; Aldina, Rinda Fajrin; Suwandi, .; Wijaya, Andi; Khodijah, .; Meidalima, Dewi
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 14, No 1 (2014): Maret, Jurnal Hama dan Penyakit Tumbuhan Tropika
Publisher : Universitas Lampung

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ABSTRACTAbundance and Species Diversity of Predatory Spiders for Insect Pests Inhabiting Ratoon Paddy in Tidal Lowland.  Ratoon paddy productivity is lower than the main crop.  Increasing productivity of the ratoon paddy is to protect the paddy from pests and diseases. This study aimed to analyze the abundance and species diversity of predatory spiders of rice pests on ratoon paddy in tidal lowland. Ratoon paddy field observed was from the main crop that has been harvested and cut 20 cm height. Paddy area observed was 2 ha field planted using Ciherang and Inpara varieties. Spiders inhabiting canopy were sampled using insect nets but soil dwelling spiders were trapped using pitfall traps. The result showed that spider species inhabiting canopy of ratoon paddy were Pardosa pseudoannulata, Lycosa chaperi, Araneus inustus, Cylosa insulana, Atypena adelinae, Erigone bifurca, Erigonidium graminicola, Oxyopes javanus, Argyrodes miniaceus, and Marpisa magister.  Spider species found soil dwelling were 11 species, namely Pardosa pseudoannulata, Pardosa sumatrana, Pardosa mackenziei, Pardosa oakleyi, Hogna rizali, Araneus inustus, Cylosa insulana, T. vermiformis, Runcinia albostriata, Coleosoma octomaculatum, and Marpisa magister. Abundance, species number, species diversity for soil dwelling spiders were higher than those for canopy inhabiting spiders. However, the abundance, species number, species diversity for the soil dwelling spiders  tended to be higher on the ratoon paddy 3, 4, and 5 week old than those on 1, 2, and 6 week old.  From the result, we concluded that abundance, species number, species diversity of spiders found in the ratoon paddy were higher or tended similar to those on the main crop.
Eksplorasi dan Pengamatan Intensitas Serangan Hama Penting Tanaman Tebu di PTPN VII, Cinta Manis Sumatera Selatan Meidalima, Dewi; Kawaty, Ruarita Ramadhalina
Biosaintifika: Journal of Biology & Biology Education Vol 7, No 1 (2015): March 2015
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

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Penelitian bertujunan mengamati serangga-serangga hama penting yang menyerang tanaman tebu di PTPN VII, Cinta Manis Sumatera Selatan, dilakukan dari bulan Februari sampai September 2012. Metode survei langsung ke pertanaman dengan mengikuti jadual early warning system (EWS) PTPN VII. Hasil penelitian menemukan serangga hama penting tanaman tebu ialah penggerek batang bergaris (Chilo saccharipaghus), penggerek batang berkilat (Chilo auricilius), dan penggerek pucuk (Scirpophaga nivella). Gejala serangan penggerek batang dan pucuk tebu ditemukanpada umur 2 bulan, serangan tinggi pada umur 3-5 bulan, hal ini berkaitan dengan cuaca. Pada saat penelitian dilakukan serangan tertinggi terjadi pada bulan Mei sampai Juli, dengan suhu, curah hujan, jumlah hari hujan, dan kelembaban nisbi berturut-turut adalah 26,6OC, 245,5 mm, 17 hari dan 98%. Serangan pada tanaman muda, menyebabkan kematian. Pada tanaman yang sudah membentuk ruas, gejala penggerek batang jelas terlihat dari luar jika daun tebu diklentek. Gejala serangan penggerek pucuk terlihat pada helai daun yang berlubang.Intensitas serangan penggerek batang tertinggi pada umur tebu 3 bulan (6,69%), sedangkan intensitas serangan (2,97%) dan populasi penggerek pucuk (44,60 larva) tertinggi pada umur 3,5 bulan.The research aimed to observe the important pest insects attacking sugarcane in PTPN VII, Cinta Manis,South Sumatra. Direct Survey methodto the crop by following the schedule ofearly warning system (EWS) of PTPN VII, conducted from February to September 2012. The results found that important insect pests attacking sugarcane werestriped stem borer (Chilo saccharipaghus), shiny stem borer (Chilo auricilius), and shoot borers (Scirpophaga nivella). Symptoms attack of shotand stemborer of sugarcane were found at 2 months of sugarcane age, high attack at the age of 3-5 months, it is highly related to weather.The highest attack occurred in May and July, with the temperature, precipitation, number of rainy days, and the relative humidity in were 26.6 oC, 245.5 mm, 17 days and 98% respectively. Attack on young plants, causing death. In plants that were already established segments, stem borer symptoms clearly visible from the outside ifsugarcane leaves were diklentek. Shoot borers attack symptoms seen in the perforated leaves. The highest intensity attackof stem borer was at 3 months of sugarcane age (6.69%), while the attack intensity (2.97%) and the highestpopulation of shoot borer(44.60 larvae) were at3.5 months of sugarcane age.
DIVERSITY OF ARTHROPOD PREDATOR IN SWAMP RICE FIELDS IN SOUTH SUMATERA Meidalima, Dewi; Kawaty, Ruarita Ramadhalina; B. Gunawan, Erlan
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 18, No 2 (2018): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

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Abstract

The abundance and diversity of arthropod in agro ecosystem depend on the level of synthetic pesticide contamination.  This study aimed to explore, identify and analyze the diversity and abundance of predatory arthropods in swamp rice fields treated with pesticide application (in Pemulutan) and without pesticide application (in Musi 2). The swamp rice fields in Pemulutan are bordered by village, river and forest. The methods were survey and direct observation on 3 ha and 2 ha of swamp rice fields in Pemulutan and Musi 2, Palembang. Sampling of predatory arthropods were conducted at 20, 50, 80 and 110 days after rice planting using pitfall trap.  Identification of  predatory arthropods  was conducted at Laboratory of Entomology showing that the arthropod collected consisted of 17 species of insects and 9 species of Arachnida. In Pemulutan Ogan Ilir were found 19 species (10 species of insect and 9 species of Arachnida) at the village area. In the area that was bordered by river were found 8 species (7 insect and 1 Arachnida). In the area bordered by forest were found 22 species (10 species of insects and 12 species of Arachnida). The diversity level, number of species, and arthropod specimen in the field without pesticide application at Musi 2 were higher than those in the fields with pesticide application in Pemulutan.