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All Journal Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences EUGENIA COCOS Jurnal Penelitian Teknologi Informasi dan Sains
Jantje Pelealu
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Agriculture, Biological Sciences & Forestry Computer Science & IT Environmental Science

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KETERTARIKAN HAMA Sitophilus oryzae PADA BERAS, JAGUNG PIPILAN KACANG TANAH, KACANG KEDELAI, DAN KOPRA J. Manueke; Jantje Pelealu
EUGENIA Vol. 21 No. 2 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.21.2.2015.9706

Abstract

ABSTRACT   The purpose of research is to know the preferences of Sitophilus oryzae in rice, corn, peanut, soybeans, and copra. Experiments using observational and substitutional methods with research objeck is the interest of S. oryzae in some kind of postharvest material. Parameters measured were population density of pests, feeding damage caused by pests, and the relationship between population densty of pests and postharvest material damage caused by pests feed of S. oryzae. The results showed that S. oryzae choose food according to its main host. Population density are highest at 20.8 tail in rice, corn followed by14.0 tail, 8.2 tail in peanuts, 7,0 tail in soybeans and the lowest in copra is 4.0 tail. The results of feeding test showed that S. oryzae can not live in peanut, soybeans, and copra. Damage to feed straight to the population density S.oryzae. The amount of damage depends on the amount of feed that is higher pest populations, the greater damage in flicted on feed. Key words: preferences, Sitophylusoryzae, rice, corn, peanut, peanut soya, copra
PEMANFAATAN ENTOMOPATOGEN INDIGENOUS INDONESIA SEBAGAI KANDIDAT BIOPESTISIDA RAMAH LINGKUNGAN TERHADAP HAMA PENTING TANAMAN CABAI Ch L Salaki; Jantje Pelealu
EUGENIA Vol. 24 No. 3 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.24.3.2018.28791

Abstract

The purpose of this study was to obtain potential isolates of entomopathogenic bacteria and fungi that can be formulated into superior biopesticide candidates. The research methods used were 1) exploration of entomopathogenic bacteria and fungi from isolation of soil samples and infected insect pests, 2) rearing test insects and chili plant nurseries, 3) testing the killing power of entomopathogenic bacterial and fungal isolates against key pests of chilli plants and 4) pathogenicity testing of entomopathogenic bacteria and fungi to chilli plant pests. 104 soil samples were obtained from the field, consisting of paddy soil, plantation land, yard and forest soil with 21 isolates of Bacillus thuringiensis isolates. Sampling of entomopathogenic fungi was found in 17 insects attacked by entomopathogenic fungi. From the results of testing of all B. thuringiensis isolates, there were 12 isolates that could kill test larvae (S. litura) at a success rate greater than 50% 96 hours after preparation and 8 isolates that were able to kill the test nymph (M. persicae) at a success rate greater than 50% 96 hours after treatment. The results of testing the killing power of entomopathogenic fungi isolates were found to be the highest ability to kill S. litura larvae (93.3%), followed by MMITO isolates (86.7%) and MMSAM (80.0%). These isolates were isolates from the fungus Metarhizium anisopliae. The results of the selection of B. bassiana isolates in S. litura larvae were the best isolates of BEMSAM (86.7%) followed by BEMTTO isolates (83.3%). Whereas for testing the nymph Myzus persicae, mortality above 50% occurred through 2 isolates of Metarhizium anisopliae and 3 isolates of Beauveria bassiana. The pathogenicity test of Bacillus thuringiensis isolates showed that the highest mortality of Spodoptera litura in TTM isolates with a concentration of 5.02 x 105 with the fastest death time 28.2 hours after treatment. Whereas in the test of Myzus persicae, the highest mortality was in the TYM isolate with a concentration of 6.3 x 104 with the fastest death time was 22.4 hours after treatment.
Co-Authors Abdul Latief Abadi Ariyane O.S. Siwu Ayu Ningsih Paputungan Bambang Tri Rahardjo Betsy A. N. Pinaria Caroulus S. Rante Ch L Salaki Ch. L. Salaki Christian L. Kaparang Christina Salaki Daisy S. Kandowangko Emmy Senewe Evi Paendong Evie Paendong Feybra S. Sigarlaki Frangky J. Paat Ginting, Margaretha S Henny V.G. Makal Herens A. Parera Hetsi A. Kaurow Inday Pangumpia J. MANUEKE James B. Kaligis Jandrio H. Moonik Jimmy Rimbing Juliet M.E. Mamahit Jusuf Manueke Magdalena M. Kesek Max Tulung Meity Nelltje Tanor Melisa Catrina Paath Moulwy F. Dien Natalia Samba Noni N. Wanta R. M. Meray Robert W. Tairas Selvie Tumbelaka