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HAMA PENTING TANAMAN UBI JALAR (Ipomea batatas L.(Lamb)) DI KABUPATEN MINAHASA, MINAHASA UTARA, DAN KOTA TOMOHON Pinontoan, Odi R.; Lengkong, Maxi; Makal, Henny V.G.
EUGENIA Vol 17, No 2 (2011)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.17.2.2011.3532

ABSTRACT The research aimed to identify important pests which attack sweet potato in the field. Field and laboratory research were conducted. The field research was carried out in sweet potato cropping areas in Minahasa Regency, North Minahasa regency andÂ Tomohon. The laboratory research was conducted in plant pests and disease laboratory, Faculty of Agriculture Sam Ratulangi University Manado to idedntify the important pest species which were found on sweet potato plants. The duration of the study was four months starting from December 2010 until March 2011. Survey method was applied with purposive random sampling.Â The research was used 4 period of plant growth namely 1 month, 2 months,3 months, and 4-5 months after planting. The result showed that there were five orders identified, attacking sweet potato since the age of 1-4 months in Minahasa regency, Tomohon and North Minahasa regency. The five orders were Orthoptera, Hemiptera, Homoptera, Lepidoptera, and Coleoptera. The damage on the leaves were caused by pests coreidae, Cicadelidae, Spodoptera sp (Noctuidae), Valanga sp (Acrididae), and Oxya sp. (Acrididae), whereas on the stem was Omphisa sp (Pyralidae). Damage on the tuber was caused by Gryllotalpa sp (Gryllotalpidae), Cylas formicarius (Curculionidae) and Oryctes sp (Dynastidae). Key words : Important Pest Plant Sweet Potatoes, Ipomea batatas L.

KEANEKARAGAMAN JENIS DAN KELIMPAHAN POPULASI SERANGGA AIR SEBAGAI INDIKATOR BIOLOGIS CEMARAN AIR PADA DAS DI LANGOWAN Maramis, Redsway T.D.; Makal, Henny V.G.
EUGENIA Vol 17, No 2 (2011)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.17.2.2011.3529

ABSTRACT Â Aquatic insects are one of the organisms that are used in determining water contamination. Aquatic insects are sensitive to the presence of waste dumped in the river and some are resistant to such waste. One of insect resistant waste is Chironomidae. The research objective was to determine aquatic insect species, population abundance by calculating indices diversity and biotic index. Aquatic insects in the lake watershed Tondano were collected by kicks and Hand Picking. Result showed that seven orders, theerteen families and sixteen species had been identified. The number of highest aquatic insect was found in Noogan which were 13 species, whereas in karondoran were 9 species. Aquatic insects were identified including, Heptagenia sp, sp Baetis sp, Caenis sp., Hydropsyhe, sp and Chrironomidae. The highest aquatic insect populations were collected in Karondoran followed by Winebetan and Noogan. The highest diversity index of aquatic insects was found in Winebetan whereas the lowest was in Karondoran. The lowest value of the biotic index was identified in the region Noogan suggested that water in Noogan area was clean water compared to Winebetan and Karondoran. Key word: Types and aquatic insect populations

SERANGAN HAMA Cylas formicarius F. (coleoptera : curculionidae) PADA BEBERAPA SENTRA TANAMAN UBI JALAR ( Ipomoea batatas L.) DI KABUPATEN MINAHASA SELATAN, MINAHASA, DAN KOTA TOMOHON Edi . Handoko; Odi R. Pinontoan; James B. Kaligis; Henny V.G. Makal
COCOS Vol. 2 No. 3 (2013)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i3.1487

ABSTRACTPlant sweet potato (Ipomoea batatas. L) is one of the crops that have a high nutrient, sweet potato ranks ninth among food crop in the world. This study aims to determine the percentage of the pest in some centers C.formicarius sweet potato plant, in the district of South Minahasa, Minahasa regency, and Tomohon. The benefits of this research are expected to provide information on the percentage of C.formicarius pests, so it can be used as an input in the preparation of control programs in the future. results showed that the percentage of pests C. formicarius highest in South Minahasa Regency Village District Sinisir Modoinding 36.09% at follow Tomohon Tomohon western sub Desa Woloan 10.06% and Minahasa Regency Village District Sumarayar North Langowan 8.78%. high percentage pests C. formicarius in South Minahasa Regency Village Sinisir Modoinding district because of the availability of food but to attack yams C. formicarius also attack potato plants so that pest populations C. formicarius Sinisir village increased.Keywords: Sweet potato (Ipomoea batatas), Attack Cylas formicarius F. (Coleoptera curculionidae),

INSIDENSI PENYAKIT KARAT PADA KACANG MERAH (Vigna angularis (Willd) Ohwi& H.Ohashi) DI KABUPATEN MINAHASA Wati Husain; Guntur S.J. Manengkey; Henny V.G. Makal; Johanna M. Paath
COCOS Vol. 3 No. 6 (2013)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v3i6.3001

ABSTRACTThis study aims to determine the symptoms and the incidence of rust disease on red beans in Minahasa Regency. The research was conducted in July to Oktober 2012 in the village of Tonsewer, Toured and Tumaratas. Continued research in the Laboratory of Microbiology and Plant Diseases, Faculty of Agriculture, University of Sam Ratulangi Manado, to observe microscopic rust disease symptoms on kidney beans. The method used was a survey method by making an incision on the diagonal red bean plant sample plots with a size of 2 x 2 m and subsequent rust disease incidence was observed in these plants. Based study showed that the rust disease caused by a Uromyces sp. fungus that has synctoms on the upper and bottom leaf surface of the small spot form with the color rather pale, sligthly up (stand). In general these tiny spots surrounded by a chlorotic part, although there are also the only form of brown spots. Incidence of the disease increases with age of the plant until near harvest and the fourth observation in the village of Tonsewer 47.06 %, village of Toure 46.08 % and village of Tumaratas 47.06 %.Keyword: Imcidence of rust disease on red beans, Uromyces sp.

INSIDENSI PENYAKIT AKAR GADA (Plasmodiophora brassicae Wor.) PADA TANAMAN KUBIS DI DESA RURUKAN DAN KUMELEMBUAY KECAMATAN TOMOHON TIMUR KOTA TOMOHON Frida Towaki; Max M. Ratulangi; Guntur S.J. Manengkey; Henny V.G. Makal
COCOS Vol. 4 No. 6 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i6.4855

ABSTRACTFrida Towaki. Incidence of Clubroot Disease (Plasmodiophora brassicae Wor.) Cabbage Plants in the Village of Rurukan and Kumelembuay East Tomohon District Tomohon City. Guidence Ir. Max M. Ratulangi, MS as chairman, Ir. Guntur S.J. Manengkey, MP and Ir. Henny V.G. Makal, M.Si as memberThe study aimed to determine the incidence of root diseases clubroot on cabbage in the village Rurukan and Kumelembuay, Eastern District of Tomohon, Tomohon . This research was conducted in the village of Rurukan and Kumelembuay sub district East Tomohon, Tomohon city, and continued in the laboratory for microscopic observation of the pathogen Plasmodiophora brassicae. Data retrieval clubroot disease incidence for each village determined four blocks, each block of the extent of 0.5 ha and made sliced diagonally to get five plots with a size of 2.5 x 2.5 m, spacing is 50 x 40 cm so that each plot 32 and the number of plants from the plots do root disease incidence data retrieval clubroot. Data collection was started at the age of 21 plants DAP, with an interval of one week observation period. The result showed that the cabbage plant in the village Kumelembuay and Rurukan Plasmodiophora brassicae Wor already infected. Clubroot cause of the disease with the symptoms experienced withered plant leaves and roots when plants revoked visible swelling. The level of pathogen attack in the village of Rurukan average was 52.17 % and 46.40 % in the Village Kumelembuay.Keywords : Plasmodiophora brassicae Wor, Cabbage

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

INSIDENSI PENYAKIT TUNGRO PADA TANAMAN PADI SAWAH DI KECAMATAN TOMOHON BARAT KOTA TOMOHON Livita C. Tamuntuan; Guntur S.J. Manengkey; Henny V.G. Makal; Max M. Ratulangi
COCOS Vol. 6 No. 6 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i6.8039

ABSTRACTThis research aims to study the incidence of disease in lowland rice tungro held in the District of West Tomohon, and lasted for 5 months from the month of November 2014 until March 2015. This study uses a survey or field observation purposive sampling with the object of research fields rice farmers in West Tomohon sub district, which is in the Village Taratara and Village Woloan. Each village was taken three plots groves and each plot was made sliced diagonally with five subplots with the size of each subplot that is 2 m x 2 m. At each subplot obtained 56 family of plants that was four weeks with a spacing of 15 cm x 20 cm x 40 cm (Legowo row 1: 3) of crop land, observations were made four times at intervals of one week. The results showed that characterizes the disease tungro rice paddy in the district of West Tomohon is infected plants tungro disease suffered stunted plant growth (dwarf), the color of the leaves turn yellow to yellow orange accompanied with brown spots on the leaves. Tungro disease incidence in rice crops in West Tomohon sub district amounted to 22:43%. Tungro disease vector Populations in West Tomohon sub district is 7.6 tail.Key words: Incidence, Disease Tungro, Rice

DIAGNOSIS DAN INSIDENSI PENYAKIT REBAH KECAMBAH PADA TANAMAN KACANG TANAH (Arachis hypogaea) DI KABUPATEN MINAHASA Elisca A. Bullele; Max M. Ratulangi; Guntur S.J. Manengkey; Henny V.G. Makal
COCOS Vol. 6 No. 7 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i7.8111

This study aims to determine the incidence of disease diagnosis and plant pests on crops peanut held in Minahasa District, in the district of the village Kawangkoan Kanonang, villages and rural Kiawa Tombasian. In the District of Sonder held in the village Leilem I, villages and rural Talikuran Leilem II, which took place during the months of September to December 2013. The study continued in the Laboratory of Microbiology and Plant Pathology, Faculty of Agriculture, University of Sam Ratulangi to observe microscopic plant pests that cause disease in plants peanuts. The method used is a survey method by determining the location and observation blocks. Location observation peanut farmer's crop in the district and sub-district Kawangkoan Sonder. Each village in each district specified area is used as an observation area, which is 10m x 20m which is divided into five sub-plot of the observations in the form of diagonal slices. Observations plant started in germination phase performed 4 times at intervals of one week. Plants showing symptoms of the disease-causing Aspergillus flavus which can be seen on the trunk of peanut plants were starting to rot and colored black and attack the plant until it withered and stunted. Pathogens infect the plant at the time of germination. The incidence of plant pests on crop diseases peanut in Minahasa highest average occurred in the village Kanonang with an average of 8.49%, Kiawa village with an average of 7.70% later in the village Leilem I with an average of 7.54 %, on average Tombasian villages of 7.31%, with an average Talikuran 7.21 and terenda with an average 6.73%. The incidence of plant pests diseases in the district and sub-district Kawangkoan Sonder at all observation sites every week by plant pests incidence of disease caused by the fungal pathogen is with an average of 8.49% and a low of 6.73% attack.

INSIDENSI PENYAKIT LAYU BAKTERI PADA TANAMAN KENTANG (Solanum tuberosum L) DI KECAMATAN MODOINDING Monica Wenas; Guntur S.J. Manengkey; Henny V.G. Makal
COCOS Vol. 7 No. 3 (2016)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i3.12153

ABSTRACTThis reseach aims study the wilt desease of bacterial on potato held in Mondoinding District for3 monts from January to April 2016. Laboratory studies conducted at the Laboratory ofMicrobiology and Plant Pathology, Faculty of Agriculture Unsrat Manado and in the field whichis in Modoinding District. The research in the laboratory is to determine the pathogenic bacteriathe causes wilt disease while in the field is to determine the incidence of the disease thet carriedout in the Linelean village, Makaaroyen village and Palelon village using subplots extent of 2 mx2 m and the spacing used between the plants is 40 cm x 20 cm with the number of samples ineach subplot at 22 plants, to study the incidence of the disease by the method of survey andsampling deliberate on potato experiencing symptoms of wilting. The result showed that thecharacteristic of pathogenic bacterial causing wilt disease on potatoin the Modoinding Districtthat Ralstonia solanacearum, is the symptoms of the plants become wither, the stem becomesbrown and rotten. The result of the study the incidence of wilt diseases caused by pathogenicbacteria in the field have differences with the incidence of wilt diseases caused by pathogenicbacteria at each location, with the highest incidence is Linelean village with 51.58%, followed by44.88% Palelon village and the Makaaroyen village 40.78%. The incidence of bacterial wiltdisease in Modoinding district each location of the observations is increasing every week withthe highest incidence of will disease caused by pathogenic bacteria is an average of 78.62% andthe lowest attack which is an average of 5.45%.

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