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Isolation and Identification Of Triterpenoid Saponin From Baringtonia asiatica Kurz Seeds. Meity N Tanor; Abdul Latief Abadi; Bambang Tri Rahardjo; Jantje Pelealu
Journal of Tropical Life Science Vol. 4 No. 2 (2014)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.4.2.%x

The study aimed to identify the content of the triterpenoid saponin compound from Barringtonia asiatica seeds collected from coastal of Malalayang beach, Manado, North Sulawesi. The method of extraction was the maceration with methanol solvent. The identification of the isolate was by thin layer chromatography, column chromatography, and GCMS. The phytochemistry test result of B. asiatica seed extract contained the compounds of alkaloid, saponin, and tannin. Then, the compound was separated by a thin layer chromatography method with a solvent system of methanol:chloroform:water. It produced three nodes that were spread around polar (Rf 0.24), semipolar (Rf 0.6) and non-polar (Rf 0.78) areas. Meanwhile, the process of column chromatography could only separate two chemical components namely semipolar (Rf 0.6) and polar (Rf 0.76). The identification with GCMS resulted in three compounds of Triterpenoid saponins, namely 2.4-bis-(1.1-dimethyl ethyl); 4-Dodecylphenol; and 2.6 bis-(1.1-dimethyl ethyl-4-methyl).

Inventarisasi Parasitoid Hama Tanaman Padi Sawah di Kabupaten Minahasa Utara Ariyane O.S. Siwu; Jantje Pelealu; Christina L. Salaki; Noni N. Wanta
COCOS Vol. 2 No. 3 (2013)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i3.1513

ABSTRACTInsect parasitoids are small or as large as the host to parasite and off the host. The research was conducted in lowland rice planting area in North Minahasa regency. Research purposes to determine the type and parasitoid populations on rice crop pests in sub Kauditan, Talawaan, and Dimembe. The research was done by sweeping using insect net swing of 20 times on the location of paddy rice crops, sampling is done three times at intervals of two weeks representing all phases of rice growth was identified in the laboratory and then analyzed descriptively. The results showed that the insect parasitoid found was of the Order Hymenoptera and Diptera and in different types and each sub-population, namely, District Kauditan there are 19 types, 19 types Talawaan, and Dimembe13 types. Parasitoids Telenomus spp. average of 6.5 tail in Kauditan, Dimembe 4.5 tail, while the tail Talawaan 3.6 Apanteles sp. average of 6.5 in sub Dimembe tail, Talawaan 6 tails, and tails Kauditan 3.8.Keywords :Parasitoids, Hymenoptera, Diptera, Rice plants

SERANGGA HAMA YANG BERASOSIASI PADA TANAMAN PEPAYA (Carica papaya L.) DI DESA TALAWAAN KECAMATAN TALAWAAN KABUPATEN MINAHASA UTARA Feybra S. Sigarlaki; Jantje Pelealu; James B. Kaligis; Emmy Senewe
COCOS Vol. 4 No. 6 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i6.4854

ABSTRACTFeybra S. Sigarlaki. Pest Insects Associated on Plants Papaya (Carica Papaya L.) in the Village Talawaan, District Talawaan, Regency Minahasa Utara. Under Guidence Prof. Dr. Ir. Jantje Pelealu, MS as chairman, Ir. James B. Kaligis, M.Si and Ir. Emmy Senewe, M.Si as member.The study aimed to determine the association of insect pests on crop Papaya in Village Talawaan, District Talawaan, regency Minahasa Utara. Research conducted surveys using methods purporsive sampling. At planting area observed insects found in papaya plants. Sampling was done by catching insects directly and observe the plants in the form of stems, leaves, and fruit are infested by insects. Insect samples were obtained from the direct retrieval, collected and grouped then taken to the laboratory for identification and documentation. Insect samples were taken on three varieties of papaya, the varieties of Bangkok, Thailand and California. Each set of 20 varieties of trees as a place of observation. The total number of papaya plants sampled 60 trees. Sampling was carried out four times at intervals of two weeks. Things that are observed insects collected on various varieties of papaya.The results of the study found four types of insects that are associated to the papaya plant in the Village Talawaan, District Talawaan. Types of insect pests, namely Aleurodicus sp. (Hemiptera: Aleyrodidae) and Paracoccus sp. (Hemiptera: Pseudococcidae) and their natural enemies, the Coccinellidae (Coleoptera) and Forficulidae (Dermaptera).Keywords : Carica papaya, Minahasa Utara

PARASITISASI DAN POPULASI PARASITOID Diadegma semiclausum (HYMENOPTERA: ICHNEUMONIDAE) PADA TANAMAN BRASSICACEAE DI KECAMATAN MODOINDING KABUPATEN MINAHASA SELATAN Herens A. Parera; Jantje Pelealu; Moulwy F. Dien; Caroulus S. Rante
COCOS Vol. 5 No. 2 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v5i2.5541

ABSTRACKCabbage (Brassica oleracea var. Capitata L. f. alba DC) is a vegetable that contains vitamins, minerals, proteins, carbohydrates and grese for the formation of human body and increase energy for the activity of human muscles. North Sulawesi is a region that has a large planting vegetables in the east of Indonesia. Cabbage crop harvested area of approximately 1,614 ha, with an average production of 17.25 tonnes per ha. The low production of cabbage in North Sulawesi caused by farming system which is still conventional and the presence of pests especially Plutella xylostella and Crocidolomia binotalis. The study aims to determine the percentage of the population and parasitization of the parasitoid Diadegma semiclausum in District Modoinding. The experiment was conducted in the South Minahasa Modoinding. Implementation of the study lasted for six months, start from July to December 2013, the research using survey method conducted on cabbage and other Brassicaceae plant at Modoinding District of South Minahasa Regency. Criteria for the location of the sample is the presence or type of cabbage and other Brassicaceae. Materials and tools used in this research are larvae and pupae of Plutella xylostella, Brassicaceae plants, sample bottles, bottle collection of 70% alcohol, tweezers, scissors, cutter, aqua glass, asahi cloth, rubber bands, "hand counter" and "loupe" , as well a stationery. The observation of parasitoid parasitization highest percentage found in the village of Lineleyan which reached 25.23%, then the Kakenturan Village respectively 17.40%, 1.83% Pelelon, Sinisir 1.05%, 0.93% and Mokobang Wulurmaatus 0.59%. Results sweeping using insect nets on cabbage and other Brasicaceae found that the highest population in the village of D. semiclausum Lineleyan (25, 42 individuals), and then successively Kakenturan Village (19.08 individuals), Palelon village (4.75 individuals), Sinisir village (4.50 individuals), Wulurmaatus village (4.08 individuals), and the Mokobang village (2.66 individuals).Keywords: Plant cabbage,Plutella xylostella and Diadegma semiclausum

POPULASI SERANGGA PADA TANAMAN CABAI (Capsicum annuum varlongum) DENGAN MENGGUNAKAN PUPUK ORGANIK DAN ANORGANIK DI DESA TONSEWER KECAMATAN TOMPASO DUA Natalia Samba; Jantje Pelealu; Christina Salaki; Henny V.G. Makal
COCOS Vol. 5 No. 3 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v5i3.5960

ABSTRACTThe research was conducted in the village of Subdistrict Tonsewer Tompaso Two for three months ie from July to October 2013. Laboratory studies conducted at the Laboratory of Entomology, Faculty of Agriculture and Plant Pests and field Unsrat Manado which is in District Tompaso. Land used for the observation that the land already planted chili farmers. The land area is used for observation of 15 x 3 m plots consisting of 6 which is then divided by three beds for the treatment of organic fertilizer and inorganic fertilizer plots 3 and 3 Plots for chemical fertilizers and each plot containing 22 tress chili plants. . In studies conducted at the plant chili with organic and inorganic fertilizer use are the following pests: Insects that bersosiasi on pepper plants that use organic and inorganic fertilizers, namely the Order Hymenoptera (vespidae family, Family: ichneuimonidae), Arachnida Order (family Araneidae), the Order Diptera (family Tephridae), Order Hemiptera (family: Alydidae), Order Coleopteran (family: Scarabidae) Order Homoptera (family: Aleyrodidae), Order Lepidoptera (family: Noctuidae), Aphids and Insects-Insects that dominate the area pepper plants that use organic fertilizers and inorganic fertilizers are Diptera (family Tepridae), Aphids (Family Aphididae) and Coleoptera (family Scarabidae). In this study there are enemies - namely natural enemies encountered spiders, and seranga - Insects such as Bemisia tabaci vectorKeywords : insect populations, chilli, Organic And Inorganic Fertilizers .

POPULASI HAMA KEPINDING TANAH (Scotinophara coartata F.) PADA TANAMAN PADI SAWAH DI KECAMATAN DUMOGA UTARA KABUPATEN BOLAANG MONGONDOW Jandrio H. Moonik; Jantje Pelealu; Henny V.G. Makal; Jimmy Rimbing
COCOS Vol. 6 No. 5 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i5.7588

ABSTRACTRice crops (Oryza sativa L.) is a crops that produce rice which is used as staple food of about 90% of Indonesia's population consumes rice. Pest is any organism that can interfere with the growth and development of plants so that the plants become damaged, stunted growth, and or death. Bedbug soil pest (Scotinophara coartata F.) is one of major pests that attacks rice crops and spread on planting rice in Sulawesi, Sumatra, Kalimantan and Java. This research aims to find out pest population S. coarctata in rice plants by plant age in some villages in the sub-district of North Dumoga, regency of Bolaang Mongondow. The research took place in sub-district of North Dumoga, regency of Bolaang Mongondow, which was in three villages, that is North Dondomon, South Mopuya and South Mopuya I, and the execution time was from October to Desember 2014. This research uses survey method with direct observation technique. Each village was taken three observation plot, and determined of five sub observation plot to be observed. The materials and tools used were rice crops planting, meter, plastic rope, bamboo poles, scissors, cameras and stationery. The research result shows that the population of soil bedbug (S. coartata F.) on the rice crops in sub-district of North Dumoga based on the age of the plant, the highest pest population was found in the age 42 hst is 4,15 tails, then in the age 28 hst is 2,81 tails and the lowest in the age 14 hst is 1,35 tails, and based on the location, the highest in the village of South Mopuya ie 3,07 tail, followed by the village of North Dondomon is, 2.67 tails and lowest in the village of South Mopuya I is 2,56 tail.Keyword: rice plants, soil bedbug, population

POPULASI HAMA WERENG HIJAU (Nephotettix spp.) DAN WERENG PUNGGUNG PUTIH (Sogatella furcifera Horv.) PADA TANAMAN PADI SAWAH DI KECAMATAN SONDER KABUPATEN MINAHASA Magdalena M. Kesek; Jantje Pelealu; Noni N. Wanta; Juliet M.E. Mamahit
COCOS Vol. 8 No. 1 (2016)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i1.11325

ABSTRACT Â The study aims to determine the abundance of green leafhopper (Nephotettix spp.) pest populations and white back planthopper (Sogatella furcifera Horv.) in rice in the District Sonder.Â This research was conducted in two villages of Tincep and Kauneran during the six months from November 2014 through April 2015.Â ThisÂ study used a survey method in rice crops in two villages. Every village observations determined three plots were divided into five subplots of observations for sampling. Research shows that green leafhopper populations in rice cultivation isÂ highest in the third observation, in the tincep village is 10,40 tail and village kauneran 9,33 tail. Lowest population occurred when the first observation in the Tincep village 5,06 tail and Kauneran 4,13 tail. Whereas the population of white back planthopper in rice crops in highest in the first observation that, in the village of kauneran 6,26 tail and in village Tincep 6,20 tail. Lowest population occurs on the last observation is at kauneran villages 2,20 tail and Tincep village 1,80 tail. BasidesÂ green leafhopper and white back planthopper found also other insects both as pests and natural enemies.

JENIS DAN PERSENTASE PARASITOID TELUR HAMA PENGGULUNG DAUN PISANG (Erionata thrax L) (LEPIDOPTERA: HESPERIIDAE) PADA BEBERAPA KETINGGIAN TEMPAT DI KABUPATEN MINAHASA Melisa Catrina Paath; Jantje Pelealu; R. M. Meray
COCOS Vol. 10 No. 6 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i4.23909

ABSTRACT. Melisa, Jantje Pelealu, and Elisabeth Meray. 2019. Species and Percentage of Parasitoid of Banana Leaves (Erionata thrax L) (Lepidoptera: Hesperiidae) at Several Altitude Places in Minahasa District. The aim of the study was to determine the type and percentage of Erionata thrax egg parasitoid at several altitudes in Minahasa Regency, namely the height of 0-100 meters above sea level in the Village of Kalasey, 101-200 mdpl Sea, and 201 - 300 masl Warembungan. The study lasted for four months, namely April 2016 to July 2016. The experiment used the survey method. Determination of sampling is done by drawing diagonal lines in the location. Each diagonal point is defined as five clumps of banana plants for sampling. Sampling was taken randomly in five clumps of banana plants. Data collection is done once a month. The way to take samples is to take as many eggs as E. thrax found on the lower surface of the leaves. The parasitoid that comes out of the egg is separated and included in killing bottle. The percentage of parasitic eggs is done by counting the number of parasitic eggs. The results showed that there were types of parasitoid, namely Agiommatus sumatraensi, Anastatus sp., Pediobius erionotae, and Ooencyrtus pallidipes. Total Parasitization of egg parasitoid of E. thrax pests at an altitude of 0 - 300 masl in Minahasa District reached 68.5%. The highest paritation, namely P. erionatae, reached 19.1%. Keywords : Parasitoid in the eggs, E. thrax, different altitudes

SERANGAN HAMA PENGGEREK BATANG Ostrinia furnacalis Guenee (LEPIDOPTERA: PYRALIDAE) PADA VARIETAS JAGUNG DI KABUPATEN MINAHASA SELATAN Inday Pangumpia; Jantje Pelealu; James B. Kaligis
COCOS Vol. 10 No. 7 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i5.25578

Abstract The aim of this study was to determine the difference between O. furnacalis maize borer infestation on Pioneer 27 and Bisi 16 varieties in Kapitu, Amurang Barat, Tawaang, Tenga, Tenga, South Minahasa. The time for conducting the research is five months from February to June 2018. This study uses a survey research method with direct observation in farmers' plantations. Each farm is determined by one ha of corn plantations and then divided by five observation subplots that are spread diagonally and 40 subplots are taken.Â Based on the results of the study, the percentage of O. furnacalis attacks on maize plants in Kapitu and Tawaang villages, South Minahasa regency, showed that based on varieties, the highest attack on maize variety was 27. P40, 0.40 percent, and Bisi 16 was only 0.23 percent. Percentage of attacks based on plant age shows that the corn bisi variety 16 at the age of plants 37 days after planting (HST) of 0.10%, 44 DAP of 0.25%, 51 DAP of 0.15%, 58 DAP of 0.27 % and 65 days after 0.39%. Furthermore, the percentage of attack of maize pioneer variety 27, namely 37 dap for 0.17%, 44 dap for 0.40%, 51 dap for 0.15%, 58 dap for 0.54% and 65 dap for 0.77%. The difference in O. furnacalis attack on varieties of corn plants, allegedly caused by eating and physical plants.

POPULASI DAN INTENSITAS SERANGAN HAMA WALANG SANGIT (Leptocorisaoratorius) PADA BEBERAPA VARIETAS TANAMAN PADI SAWAH DI DESA TOLOTOYON KABUPATEN BOLAANG MONGONDOW SELATAN Ayu Ningsih Paputungan; Jantje Pelealu; Daisy S. Kandowangko; Selvie Tumbelaka
COCOS Vol. 12 No. 2 (2020): EDISI APRIL-JUNI 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i6.30823

ABSTRAKThe research aims to find out: (1). The population of walang sangit pest in several rice varieties inTolotoyon village, Bolaang Mongondow Selatan Regency; (2). pest attack wit sangit on severalvarieties of rice in the village Tolotoyon Bolaang Mongondow Regency.The study was carried outin a rice-growing area owned by farmers in Tolotoyon Village, Bolaang Mongondow SelatanRegency. The duration of the study is 3 (three) months, from December 2019 to February 2020.Bandage using Random Group Design (RAK) with the treatment of rice plant varieties, namelyCiherang, Inpari 9, and Situ bagendiT and repeated three times. The research was conducted atthree locations, each measuring approximately one (1) hectare. Each location planted one variety.Sampling was conducted three (3) times. Sampling is carried out on plants that are ten weeks oldwith a retrieval interval of one (1) week. Parameter the number of nymphs and image caught.Observation of the intensity of pest attacks is carried out visually based on the symptoms ofWalang Sangit attack on the malaise of rice crops. Observations are made on generative phase riceplants. Parameter the number of malaises affected. The results showed that the highest walangsangit pest population was found in the Ciherang variety of 6.8 Walang Sangits, followed by Inpari9 which is 5.6 Walang Sangits and the lowest in Situ bagendit which is 3.1 The yield on walangsangit pest attacks on inpari varieties was 7.0 percent, followed by Ciherang 6.1 percent, whileSitu Bagendit 3.1 percent.The difference in population and intensity of Walang Sangit pest attackson some varieties of rice crops, caused by the character of rice crops, such as the number of shootsand the color of grain.Keywords : Rice varieties,Leptocorisa Oratorius, population, and intensity

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