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

Published : 10 Documents
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Journal : JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (187.207 KB) | DOI: 10.23960/j.hptt.11310-18

Abstract

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.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (59.007 KB) | DOI: 10.23960/j.hptt.1141-7

Abstract

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.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (124.54 KB) | DOI: 10.23960/j.hptt.218%p

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.