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All Journal EUGENIA Jurnal Ilmu dan Teknologi Pangan
Dantje T. Sembel
Department of Pests and Plant Diseases, Faculty of Agriculture, University of Sam Ratulangi, Manado
Agriculture, Biological Sciences & Forestry

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PENYEBARAN HAMA BARU PADA TANAMAN PEPAYA DAN PAKIS HAJI DI SULAWESI UTARA DISTRIBUTION AND STATUS OF NEWLY INTRODUCED INSECT PESTS OF PAKIS HAJI IN NORTH SULAWESI Sembel, Dantje T.; Meray, Elisabeth R.M.; Kandowangko, Daisy S.; Dien, Moulwy F.; Ratulangi, Max M.
EUGENIA Vol 18, No 2 (2012)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.18.2.2012.2491

Abstract

ABSTRACTThe objective of this work was to study the distribution and state of the new and accidentally introducedinsect pests of papaya and pakis haji in North Sulawesi. Results showed that the papaya mealy bug,Paracoccus marginatus (Hemiptera: Pseudococcidae) has spread and establised in North Sulawesi butits level of infestation has been from low to medium depending on the location. The main naturalenemies found on the papaya mealy bug were Coccinelidae (Coleoptera), Hermetia illucens (Diptera:Stratiomyidae) and Acerophagus papaya (Hymenoptera: Encyrtidae). The Cycad scale, Aulacaspisyasumatsui Takagi (Hemiptera: Diaspididae) and yellow beetle, Lilioceris sp. (Coleoptera:Chrysomelidae) were first recorded on pakis haji in North Sulawesi and causing damage to pakis haji inthis region. The predator found on cycad scale was a beetle, of the famili Cybocephalidae genusCybocephalus.Keywords: Paracoccus marginatus, Aulacaspis yasumatsui, Lilioceris sp, papaya and pakis haji
CONTROL OF CACAO POD BORER, CONOPOMORPHA CRAMERELLA SNELLEN ON CACAO PLANTATIONS IN NORTH SULAWESI USING DEGRADABLE POLYMER SLEEVES Sembel, Dantje T.; Watung, J.; Shepard, Merle; Hamming, Mike; Carner, Garry R.
EUGENIA Vol 17, No 2 (2011)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.17.2.2011.3530

Abstract

ABSTRACT Research was aiming to control the cocoa pod borer, Conophomorpha cramerella using different thickness of degradable plastic and regular plastic by sleeving to protect pods. The studies were carried out in abandoned cacao plantation at Sapa, and commercial cacao plantations at Pungkol in the sub-district of South Minahasa in North Sulawesi, Indonesia. Result showed  that sleeving with plastic at different thickness can reduce markedly the infestation by CPB but there was no significant difference between thickness and type of plastic. Between 85 to 95 % of the pods sleeved with degradable and  non- degradable plastic at the commercial cacao plantation  were not damaged by CPB  but 96 % of control (unsleeved pods)  was damaged by CPB. Key words: Conopomorpha cramerella, cocoa plantations, degradable plastic bags
PENGGUNAAN Trichoderma sp. DAN PGPR UNTUK MENGENDALIKAN PENYAKIT PADA TANAMAN STRAWBERRY DI RURUKAN (MAHAWU) Rante, Caroulus S.; Meray, Elisabet R.M.; Kandowangko, Daisy S.; Ratulangi, Max M.; Dien, Moulwy F.; Sembel, Dantje T.
EUGENIA Vol 21, No 1 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.21.1.2015.11799

Abstract

ABSTRACT Study aims (a) to determine the effectiveness of Trichoderma sp., combination PGPR and Trichoderma sp., and PGPR to the development of diseases that attack strawberry plants, (b) to study the effect of application of Trichoderma sp., combination PGPR and Trichoderma sp. and PGPR for strawberry production.  The experiment was conducted in the village Rurukan (Mahawu), subdistrict Tomohon Timur.  Study lasted from March to August 2013.  Experiments using a randomized block design with 4 treatments, as follows: Treatment A = Trichoderma sp., Treatment B = PGPR, Treatment C = combination of Trichoderma sp. and PGPR, and Treatment D = Control.  The experiment was repeated 4 times.  Data were analyzed using Minitab software ver. 14.  Things that observed the symptoms of disease, number of shoots, roots and heavy weight of strawberries.  The results showed that strawberry plants are not attacked by various diseases. Fungus Verticillium sp. encountered attack strawberry plants with very low intensity.  The average number of shoots ever encountered on the 6.25 shoots PGPR treatment and lowest in the control treatment, ie 2.20 shoots .  The average weight of the heaviest roots found in the PGPR treatment and 68.75 grams of the lowest in the control treatment, which is 13.50 grams.  The average weight of the fruit of the highest found in the 731.25 grams of PGPR treatment and lowest in the control treatment fruit weighing 417.50 grams. Keywords : Trichoderma sp., Verticilium sp., PGPR, Mahawu
Co-Authors Agnes T. Watung, Agnes T. Caroulus S. Rante Daisy S. Kandowangko Elisabet R.M. Meray Erwin G. Kristanto Frans G. Ijong, Frans G. Garry R. Carner J. Watung Johannes Huijbregts, Johannes Max M. Ratulangi Merle Shepard Mike Hamming Moulwy F. Dien Sonny J.R. Kalangi Sunny Wangko