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All Journal JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Jurnal Entomologi Indonesia
SYAFRIDA MANUWOTO
Institut Pertanian Bogor Jl. Dramaga, Bogor
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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AKTIVITAS INSEKTISIDA BAGIAN TUMBUHAN CALOPHYLLUM SOULTTRI BURM.F. (CLU IACEAE) TERHADAP LARVA LEPIDOPTERA Syahputra, Edy; Manuwoto, Syafrida; Darusman, Latifah K; ., Dadang; Prijono, Djoko
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 4, No 1 (2004): Maret, Jurnal Hama dan Penyakit Tumbuhan Tropika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1953.917 KB) | DOI: 10.23960/j.hptt.1423-31

Abstract

 The objective of this test was evaluate the insecticidal activity of ectract of some parts of Calophyllum soulattri (Clusiaceae) against larvae of three species of Lepidoptera, i. e Crocidolomia pavonana, Plutella xylostela, and Pieris sp.. Extraction of plant materials was done by infusion method using ethanol. The bioassays were conducted by leaf-feeding method. Second-instar larvae were fed extract-treated broccoli leaves of 48 hours, then they were presented with untreated leaves until the surviving larvae larvae reached the fourth-instar stage. The number of dead larvae was recorded daily an larval mortality date were analyzed by probit method. The result showed the gummy bark exudates and bark extract of old and young C. soulattri plants were highly active against C. pavonana. The abrk extact of old C. soulattri plant was also effective against P. xilostella and Pieris sp. The gummy exudates possessed strong insecticidal activity against C. pavonana larvae with LC50 of 0.04% and prolonged the developmental time from second to fourth instar of C. soulattri 2.03-7.25 days compared with control. The bark excudate gave positive respon to alkaloid flavonoid, and tannin test. Futher studies are needed to identify insecticidal compound in those active extracts.
TEST OF BLOOD DISEASE BACTERIUM (BDB) TRANSMISSION BY POTENTIAL INSECT VECTORS Sahetapy, Betty; Maryana, Nina; Manuwoto, Syafrida; H. Mutaqin, Kikin; Latumahina, Fransina
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol. 20 No. 1 (2020): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/j.hptt.12071-77

Abstract

Blood disease bacterium (BDB) is one of the important diseases in banana and a major obstacle in developing and increasing banana production in Indonesia. The purpose of this study was to prove the ability of the Drosophilidae insect as a vector in transmitting BDB. The research was conducted at the Insect Biosystematics Laboratory and Plant Bacteriology Laboratory, Department of Plant Protection, Faculty of Agriculture, IPB University. Drosophilidae insects were taken from the field and then reared in laboratory by being fed with ripe bananas to obtain offspring that are free from diseases or pathogens. Imago of the Drosophilidae from rearing was fed by inoculum sources which was infected banana, then inoculated into healthy plants. The plants used were healthy and flowering, heliconia. The results showed that the Drosophilidae insects were able to transmit BDB to heliconia plants that showed symptoms, brownish flower colors and falling flower crowns. Detection of BDB isolated from flower parts and the inside parts of the insects used in transmission test using the PCR method showed positive results.
Siklus hidup dan parasitisasi parasitoid telur Ooencyrtus erionotae Ferriere (Hymenoptera: Encyrtidae) pada hama penggulung daun pisang Erionota thrax Linnaeus: Life cycle and parasitism of the egg parasitoid Ooencyrtus erionotae Ferriere (Hymenoptera: Encyrtidae) on the banana leaf roller pest Erionota thrax Linnaeus Puspasari, Lindung Tri; Pudjianto; Manuwoto, Syafrida
Jurnal Entomologi Indonesia Vol 22 No 3 (2025): November
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.22.3.219

Abstract

Erionota thrax Linnaeus (Lepidoptera: Hesperiidae) is an insect that actively attacks banana plants during the vegetative phase, particularly when new leaves begin to grow. Damage caused by E. thrax infestations can reach up to 63.14%, which falls into the category of severe damage. The use of the egg parasitoid Ooencyrtus erionotae Ferriere (Hymenoptera: Encyrtidae) is one of the methods to reduce the population of E. thrax in the field. This study aimed to examine the potential for parasitoid reproduction through the study of life cycle, demographic parameters, sex ratio, parasitization rate, and adult behavior. The research was conducted at the Laboratory of Parasitoid and Predator Bioecology, Department of Plant Protection, Faculty of Agriculture, IPB University, and at the Cikabayan Experimental Farm. The test insects were reared on host plants for breeding, and their life cycle and development were observed. Tests on the insects included adult longevity, parasitoid reproduction, and parasitism in the field. The data obtained were analyzed using analysis of variance (ANOVA), followed by Duncan’s multiple range test. The results showed that the life cycle of O. erionotae is relatively short, ranging from 13 to 15 days. The intrinsic rate of increase (r) for O. erionotae was 0.29 per day. The sex ratio (male:female) of O. erionotae in both laboratory and field conditions was female-biased, at 1:3.56. In the field, the parasitism rate of O. erionotae ranged from 16.5% to 48.67%. Based on its biological characteristics, demographic parameters, and field parasitism rates ranging from 16.5% to 48.67%, O. erionotae shows great potential for use as a biological control agent against the banana leaf roller pest E. thrax.
Co-Authors Dadang . Dede Maryana DJOKO PRIJONO Edy Syahputra Fransina Latumahina Husni dan Zulfanazli Pudjianto Alfian Rusdy Kikin H Mutaqin latifah K Darusman Lindung Tri Puspasari Sahetapy, Betty