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Guntur S.J. Manengkey
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Agriculture, Biological Sciences & Forestry

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INTENSITAS DAN LAJU INFEKSI PENYAKIT KARAT DAUN Uromyces phaseoli PADA TANAMAN KACANG MERAH Manengkey, Guntur S.J.; Senewe, Emmy
EUGENIA Vol 17, No 3 (2011)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.17.3.2011.3546

Abstract

ABSTRACT   Rust leaf on red bean is major desease in the area of Tonsewer, Toure dan Tumaratas village. The aim of the study was to determine the intensity and infection rate of rust disease on red bean at  Tonsewer, Toure and Tumaratas village, The method used was survey by drawing a diagonal line at four points and one point in the center of each farm. Hence,  there were five points that  were used for sampling area for calculating the intensity and the infection  rate caused by  leaf rust Uromyces phaseoli. The result showed that red bean farm  in the village of Tonsewer, Toure and Tumaratas had been infected by rust disease caused by the fungus Uromyces phaseoli . The average of attacking intensity was 62.29% in Tonsewer. Whereas,  Toure and Tumaratas were 61.71% and 62.29 respectively. The average of  infection rate was 0.239 per unit per day in the Tonsewe. While in the Toure and Tumaratas were  0.189  and 0.208 per unit per day respectively . Keyword : Intensity and infection rate,Red Bean
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

Abstract

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 DAN SEVERITAS PENYAKIT BERCAK DAUN PADA TANAMAN KACANG TANAH DI DESA LOWIAN DAN LOWIAN SATU KECAMATAN MAESAAN KABUPATEN MINAHASA SELATAN Sammy S.N. Rori; Guntur S.J. Manengkey; Christina L. Salaki; Caroulus S. Rante
COCOS Vol. 4 No. 6 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i6.4843

Abstract

ABSTRACTSammy Sem Niclas Rori. Incidence and Severity of Leaf Spot Disease on Peanut Plants in the Lowian and Lowian One Village, Subdistrict Maesaan, District of South Minahasa. Under Guidence Ir Guntur S.J. Manengkey, MP as chaiman, Prof. Dr. Ir Christina L. Salaki, MS and Ir. Caroulus S. Rante, MS as member.This study aimed to determine the incidence and severity of leaf spot diseases on peanut plants. The experiment was conducted in the Lowian and Lowian One, Maesaan the District of South Minahasa Regency. The duration of the study which lasted for four months from September to December 2013. Research field using survey methods that further observation and communication with the peanut farmer. Furthermore, the distribution plots five sample plots in two different villages to be observed regarding the incidence and severity of disease caused by the cause of the peanut plant. In the laboratory microscopic observation of the shape of conidiophores of the fungus causes leaf spot disease. Things were observed in this study are: (i) symptoms of infected plants leaf spot disease-causing pathogens, (ii) the incidence and severity of disease. Observations in the field showed that the symptoms appear on peanut plants after infection by a disease that causes patches of chlorosis appear later developed into necrosis with an irregular round shape up. This phenomenon is located on the lower surface of the leaves and the leaves, leaf spot color ranging from light brown to brown or yellow halo blackish necrosis.Keywords: incidence, severity, leaf spot disease
JENIS DAN POPULASI SERANGGA DI AREAL TANAMAN NENAS (Ananas Comosus (L.) Merr.) KECAMATAN PASSI BARAT KABUPATEN BOLAANG MONGONDOW Slamet Pulukadang; Juliet M.E. Mamahit; Moulwy F. Dien; Guntur S.J. Manengkey
COCOS Vol. 4 No. 6 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i6.4844

Abstract

ABSTRACTThis study aims to determine the insect types and populations at the areas of Pineapple plants near housing ecosystems and near forest ecosystems. The experiment was conducted in centers of Pineapple plantation in the Mongkonai and Lobong village District of Bolaang Mongondow and at the Laboratory of Entomology and Plant Pests UNSRAT Faculty of Agriculture for five months from July to December. insect Observation on pineapple plants is done by using the method of trapping wells (pithfall) on generative plant and samples insects taken three times. The results showed that there are four associated insect Order on the areas of Pineapple plants near housing ecosystems are: Order Orthoptera (Family Acrididae, Gryllidae); Order Coleoptera (Family Scolytidae, Scarabaiedae); Order Diptera (Family Drosophilidae, Bombyliidae); and the Order Hymenoptera (Family Formicidae), while on the area of Pineapple planting near the forest ecosystem there are five insects Order are :: Order Orthoptera (Family Gryllidae, Acrididae, and Blattidae); Order Coleoptera (Family Scarabaeidae, Scolytidae, Cicindelidae, Crysomelidae, and Alleculidae); Order Diptera (Family Drosophilidae, Bombyliidae, and Tachinidae); Order Hymenoptera (Family Formicidae); and the Order Lepidoptera (Family Pyralidae). The results also obtain the number of insects found in varying amounts each Family. The number of insects found on average ranges from 2-423 insect.Key words : the insect types and populations, Pineapple plants
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

Abstract

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
INSIDENSI PENYAKIT LAYU FUSARIUM PADA TANAMAN TOMAT (Lycopersicum esculentum Mill) DI KECAMATAN LANGOWAN BARAT Muhammad Fadly Syam; Max M. Ratulangi; Guntur S.J. Manengkey; Max Tulung
COCOS Vol. 5 No. 1 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v5i1.5348

Abstract

ABSTRACKTomato (Lycopersicum esculentum Mill) is no stranger to the community as a tomato vegetable crops play an important role in the nutrition community. This study aims to determine the cause of Fusarium wilt disease and the incidence of disease. This study was conducted in farmers' fields in the village of Tumaratas, Raringis, and Kopiwangker from February to April 2014 This study used a survey method or field observation purposive sampling. Materials and tools used in this study is the tomato crop land, plants Fusarium wilt disease, PDA, CLA media, antibiotics, distilled water, 95% alcohol, petridish, parafilm, test tube, needles ose, spirit lamp, analytical scales, tweezers, cutter, masking tape, autoclave, laminar air flow, rack culture, cover glass, glass objects, microscope, digital cameras, and stationery. The results showed the fungus that causes Fusarium wilt disease infecting tomato plants in the District of West Langowan is Fusarium sp. The incidence of Fusarium wilt disease on tomato plants in the District of West Langowan is Tumaratas village average of 6.16%, the village Raringis average of 8.66%, and the average village Kopiwangker 9.61%. The highest incidence of the disease an average of 13.66% while the lowest incidence of tomato plants with an average of 4.33%.Keywords : Tomato plant, Fusarium sp.
GEJALA DAN INTENSITAS SERANGAN HAMA KUTU DAUN (Chaetosiphon sp) PADA TANAMANSTROBERIDI KELURAHAN RURUKAN KOTA TOMOHON Zainudin Limbanadi; Juliet M.E. Mamahit; Christina L. Salaki; Guntur S.J. Manengkey
COCOS Vol. 6 No. 3 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i3.6934

Abstract

ABSTRACTStudy aims to determine the symptoms and the intensity of aphids the strawberry (Chaetosiphon sp) were held in the Village Rurukan Tomohon. This study was conducted over four months from February to May 2014. Study uses survey and observations of aphids and deliberate sampling on strawberry plants were observed.Field research was conducted in the area of planting strawberries and laboratory observations carried out at the Laboratory of Entomology and Plant Pests Faculty of Agriculture, University of Sam Ratulangi. Subplot observation intensity of the attacks on strawberry crop land has a length of 2 m and a width of 1 m to 12 m long beds. In each of the beds made two subplots, each subplot were taken 20 plants.The results showed that the strawberry aphids (Chaetosiphon sp) affects plant growth both in the vegetative and generative phase of the insect in the vegetative phase of the plants become stunted, and attacks on the generative phase led to the formation of flowers and fruit inhibited. Average intensity of the attacks in of strawberry aphidsRurukan Tomohon increased every week with the highest intensity in the sixth week, namely 46.0% plants affected in the first observation and 55.0% plants affected in the second observation.Keywords: Symptoms, attack intensity, Chaetosiphon sp.
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

Abstract

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

Abstract

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.
EFEKTIVITAS MIKROORGANISME ANTAGONIS TERHADAP PENYAKIT KARAT PUTIH PADA TANAMAN KRISAN (Chrysanthemum morifolium Ramat) DI KOTA TOMOHON Aprilia N. Rares; Emmy Senewe; Guntur S.J. Manengkey; Max M. Ratulangi
COCOS Vol. 6 No. 10 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i10.8217

Abstract

ABSTRACT Chrysanthemum or Chrysanthemum marifolium Ramat is one of the types of cut flowers have bright market prospects. As one of the types of ornamental plants, dubbed "King of Cut Flowers" besides having a shape and color which is very interesting, this plant has already started a lot of fans. Diseases that attack chrysanthemum eg rust disease caused by the fungus Puccinia sp. Damage results because this rust disease attacks especially on susceptible plants can reach 100% or crop failure. Rust diseases Puccinia sp. This allegedly carried on planting material (seeds) that has spread to many locations planting chrysanthemums. Tomohon is a center for the production of ornamental plants, especially chrysanthemum in North Sulawesi. Preliminary observations in planting chrysanthemums in Tomohon showed white rust disease. The purpose of this study was to look at and examine the effectiveness of microorganisms antagonistic Trichoderma sp., Pseudomonas fluorescens and Paenibacillus polymyxa to disease chrysanthemum white rust on research was conducted by using the method of randomized block design with four treatments namely A control treatment without application of antagonistic microorganisms, treatment B the application of microorganisms antagonistic Trichoderma sp., the treatment C with application of microorganisms antagonistic P. fluorescens and treatment D with application of microorganisms P. polymyxa. This treatment was repeated 5 times. Rating affected leaves using index calculation disease (severity). The variables measured are severity of affected leaves, leaf number and plant height. The results showed that of some microorganisms are used, equally effective in controlling the disease chrysanthemum white rust is antagonistic microorganism Trichoderma sp. with the value of the average severity of the last observation was 17.71%, followed by P. polymyxa with the average value of 26.78% last severity. Furthermore, the third treatment antagonistic microorganisms do not give effect to the number of leaves and plant height.  Keyword: Chrysanthemum, P. horiana, Trichoderma sp., P. fluorescens, P. polymyxa
Co-Authors Aneta, Ridwan Aprilia N. Rares Aprilia N. Rares, Aprilia N. Berty H. Assa Berty H. Assa, Berty H. Caroulus S. Rante Christina L. Salaki Christina L. Salaki Elisca A. Bullele Elisca A. Bullele, Elisca A. Emmy Senewe Fei Sie Lumoly Fei Sie Lumoly, Fei Sie Frida Towaki Henny V.G. Makal Johanna M. Paath Juliana O. Runtukahu Juliana O. Runtukahu, Juliana O. Juliet M.E. Mamahit Juliet M.E. Mamahit Jusuf Manueke Livita C. Tamuntuan Livita C. Tamuntuan, Livita C. Max M Ratulangi Max M. Ratulangi Max Tulung Monica Wenas Monica Wenas, Monica Moulwy F. Dien Muhammad Fadly Syam Paut Gwijangge Ratulangi, Max M Ridwan Aneta Sammy S.N. Rori Slamet Pulukadang Wati Husain Zainudin Limbanadi