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INDONESIA
COCOS
Published by Universitas Sam Ratulangi
ISSN : -     EISSN : 27150070     DOI : 10.35791
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal ini memuat materi yang berkaitan dengan Pertanian. Menyangkut Tanah, Budidaya Pertanian, Proteksi Tanaman, Teknologi Pertanian dan Sosial Ekonomi Pertanian
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 831 Documents
 69   70   71   72   73 
PENGARUH MATRICONDITIONING TERHADAP VIABILITAS DAN VIGOR BENIH KEDELAI YANG DISIMPAN DI RUANG TERBUKA Youlanda M. Udi; Stanley A. F. Walingkas; Adeleyda M.W. Lumingkewas
COCOS Vol. 12 No. 4 (2020): EDISI OKTOBER-DESEMBER 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.32442

Abstract

ABSTRACKThis study aims to study the effect of matriconditioning on the viability and vigor of soybeanseeds stored in open spaces and to obtain the best type of media for the invigoration of soybean seeds,carried out in the new city sario sario in manado, for 3 (three) months from preparation to the completionof the research, namely in May to August 2020. The method used was a descriptive method, with 4 (four)treatments that were repeated 4 (four) times consisting of P1 (husk ash matriconditioning), P2 (red brickmatriconditioning that had been crushed), P3 (rubbing ash matriconditioning), P4 (fine sandmatriconditioning). The results showed that the matriconditioning treatment could increase the viability ofsoybean seeds in the parameters of germination, germination speed, sprouting height and root length. Ofall the matriconditioning treatments, the best material to increase the viability of soybean seeds is thematriconditioning treatment using mashed red bricks with a germination percentage of 84%, germinationspeed 16.8% / etmal, sprouting height of 7.5 cm and root length of 6 , 8 cm.Keywords: Soybean seed, Matriconditioning, Viability, Vigor
PENGGUNAAN PUPUK KOMPOS AKTIF Trichoderma sp DALAM MENINGKATKAN PRODUKSI TANAMAN CABAI RAWIT (Capsicum frutescens L.) Jostefin Tigahari; Bertje Sumayku; Maria Polii
COCOS Vol. 12 No. 4 (2020): EDISI OKTOBER-DESEMBER 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.32443

Abstract

ABSTRACTCayenne pepper (Capsicum frutescens L.) is a fruit vegetable, which is needed by all levels ofsociety, because apart from being a spice for cooking and medicinal plants it is also a source oflivelihood. Environmental factors that have the potential to influence the development and yield ofchili plants include the high rainfall that is unpredictable throughout the year. The results of severalstudies indicate that the active compost of Trichoderma sp. can help growth and good results forplants. Trichoderma sp. is one of the biological control agents that have been widely used to controlplant pathogenic microbes. This research aims to study the growth and production of chili plants fedwith active compost Trichoderma sp. This research has been carried out at the Kalasey Center forFood Crops and Horticulture in North Sulawesi for 3 months from March to June 2018. The tools tobe used are: hoes, shovels, ropes, sticks, scales, sacks, writing instruments and cameras. Materialsto be used are: Nirmala's cayenne pepper seeds, soil, water, polybags, active compost Trichodermasp. and label paper. The research design was arranged in a randomized block design (RBD) with 6treatments repeated 3 times. Trichoderma sp. Active compost dosage treatment are: T0 = withoutactive compost treatment Trichoderma sp. T1 = active compost of Trichoderma sp. 50 g / 10 kg ofsoil T2 = active compost of Trichoderma sp. 100 g / 10 kg soil T3 = active compost of Trichodermasp. 150 g / 10 kg soil T4 = active compost of Trichoderma sp. 200 g / 10 kg of soil T5 = activecompost Trichoderma sp. 250 g / 10 kg of soil. Each treatment used 6 polybags with each polybagcontaining one plant. So the total number of polybags is 108 polybags. Data were analyzed usingAnalysis of Variance (Anova) to see the effect of treatment. If the treatment shows a significanteffect, the analysis is continued using the 5% LSD test. Based on the results obtained in thisexperiment, it can be concluded that the application of active compost Trichoderma sp 250 gramshas the best effect on plant height, number of leaves, flowering time, number of fruits, wet fruitweight and production of cayenne pepper.
KEADAAN KESUBURAN KIMIA TANAH PADA TANAH YANG DITANAMI TANAMAN CABAI (Capsicum Annum L) DI DESA LOWIAN KECAMATAN MAESAAN KABUPATEN MINAHASA SELATAN Serliati Ch. Kawengian; Tommy D. Sondakh; Jemmy Najoan
COCOS Vol. 12 No. 4 (2020): EDISI OKTOBER-DESEMBER 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.32444

Abstract

ABSTRACKThis study was to determine the state of soil chemical fertility in the soil planted withchilies (Capsicum annum L.) in Lowian village, Maesaan District, South Minahasa Regency, aswell as to support chili farming in Lowian village. This research was conducted in Lowianvillage, Maesaan District, South Minahasa Regency. Soil sampling was carried out in twolocations, namely at the top of the village and at the bottom of the village. Furthermore, theanalysis of soil chemical properties at the Laboratory of Chemistry and Soil Fertility, Facultyof Agriculture, Sam Ratulangi University, Manado. The research period starts from Septemberto October 2020. The results of the analysis of several soil chemical properties in chilicultivation in Lowian village, Maesaaan District show that soil acidity (soil pH) is in a slightlyacidic state (6.3 - 6.4), C-organic has a low to moderate content value (1.74). - 2.22), the valueof the cation exchange capacity (CEC) is in a low to moderate state (13.82 - 18.54), Nitrogennutrient content is low (0.14 - 0.19), Phosphorus nutrient content is in a low state (11.64 -12.45), and the nutrient content of Potassium is in a low state (13.32 - 20.11) In general, basedon the results of laboratory analysis, it was stated that the soil chemical fertility in Lowianvillage, Maesaaan District, was at a low level.Key words: Soil, chemical properties, chili plants
PENGGUNAAN ZAT PENGATUR TUMBUH SITOKININ DAN EKSTRAK BAHAN ORGANIK TERHADAP PERTUMBUHAN ANGGREK DENDROBIUM SECARA In-Vitro Bryan Mokoginta; Beatrix Doodoh; Doortje. M. F. Sumampow
COCOS Vol. 12 No. 4 (2020): EDISI OKTOBER-DESEMBER 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i2.32446

Abstract

ABSTRAKDendrobium orchids are one of the favorite orchid genera for orchid lovers. This is becausethis orchid is able to adapt to various growing environmental conditions. The growth media in tissueculture has a very big influence on the growth and development of the explants and the seeds itproduces. Cytokinins that play a role in stimulating cell division and inducing shoot formation. Someextracts of organic materials that are often used in plant tissue culture are extracts of tomatoes, corn,bananas and coconut water. This study aims to determine the best results of using cytokinins andextracts of organic matter and coconut water for in-vitro growth of Dendrobium orchids. This researchis a library research, which is a series of studies that are concerned with the method of collectinglibrary data, or research where the object of research is explored through various library information(books, encyclopedias, scientific journals and documents). The data used in this research is secondarydata. The data collection method used in this research is the documentation method. . The data analysisused in this study was annotated bibliography analysis.Based on research conducted in the form of literature searches, it can be concluded that byusing growth regulators cytokinins (in this case BAP) and extracts of organic matter, banana extract,tomato extract, corn extract and coconut water, it turns out that the best results are obtained with theuse of growth regulators Cytokinins ( namely BAP) 3 ppm with tomato extract organic matter.Kata Kunci: Zat Pengatur Tumbuh, Bahan Organik, Anggrek Dendrobium
PENGARUH BOBOT UMBI PADA PERKECAMBAHAN BAWANG MERAH (ALLIUM ASCOLANICUM L) VAR. BIMA Eka Baluwo; Jelly Porong; Tommy Ogie
COCOS Vol. 13 No. 1 (2021): EDISI JANUARI-MARET 2021
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i2.32447

Abstract

ABSTRAKThe shallot plant (Allium ascalonicum L.) is one of the annual species included in the Liliaceaefamily. Onion production in North Sulawesi from 2013 to 2017, namely; 1,354 tons, 1,242tons, 1,716 tons, 2,556 tons and 2,880 tons. Production of shallots in Indonesia in 2016amounted to 1,446,869 tons and in 2017 an increase of 1,470,155 tons (Central StatisticsAgency, 2019). Consumption of shallots in Indonesia is 4.56 kg / capita per year or 0.38 kg /capita per month, so that the national consumption is estimated to reach 1,608,000 tons peryear. Vegetative shallot seeds (pseudo tubers) have a high moisture content, so they need anappropriate storage process in order to maintain viability during storage. This study aims toobtain the ideal tuber weight for the seeds of the shallot plant. To get the ideal tuber weight forseeds from onion plants. To get the ideal tuber weight for seeds from onion plants. This researchwas prepared using a randomized block design (RAK) with the treatment of seed weight on thetubers and each treatment was repeated three times A = 2-3 gr, B = 4-5 gr, C = 6-7 gr, D = 8-9 gr and E = ≥ 10 gr. Each treatment consisted of 20 plant samples and was repeated 3 times,so that a total of 300 plants were obtained. The results of the research conducted, it can beconcluded that treatment A (2-3gr) is the ideal seed weight for the germination process, boththe speed of germination and the synchronization of sprouts followed by treatment B, C, andD.Kata Kunci: Bobot Umbi Bawang Merah
KAJIAN MUTU BENIH TANAMAN JAGUNG PULUT (Zea mays ceratina L.) DI KABUPATEN BOLAANG MONGONDOW Risky Sekoh; Selvie Tumbelaka; Adeleyda M.W Lumingkewas
COCOS Vol. 13 No. 1 (2021): EDISI JANUARI-MARET 2021
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i2.32448

Abstract

ABSTRACTwaxy corn or glutinous corn is a special type of corn that has a delicious taste, is more savory, fluffier andsofter. Seed quality consists of three components, namely: physical quality, physiological quality, geneticquality. This study aims to determine and study the quality of waxy corn seeds in Bolaang MongondowRegency. The research was conducted in Manado. This research took place from September to October 2020.This experiment used a completely randomized design (CRD), with 3 (three) treatments, namely the source ofwaxy corn seeds from several villages in Bolaang Mongondow Regency consisting of treatment P1 = seedsfrom the village Treatment Threshold P2 = Seed from Pusian Village Treatment P3 = Seed from Insil Village.Each treatment was repeated 4 (four) times in order to obtain 12 experimental units. Result of the experimentshowed The waxy corn in Ambang Village has a different quality from the quality of the seeds from PusianVillage and Insil Village. The quality of seed in Desa Ambang was characterized by germination rate of 88%,vigor index of 79%, synchronous growth of 86% and germinating speed of 28.44% / etmal. The seed qualityof Pusian Village is characterized by germination rate of 99%, vigor index of 83%, synchronous growth of98% and germinating speed of 31.53% / etmal and Village of Insil which has 100% germination, vigor indexof 83%, synchronous growth of 99% and speed of germination of 31.86 % / etmal.Keywords: Seed Quality, Pulut Corn
ANALISIS TINGKAT PENCEMARAN UDARA DI KECAMATAN WANEA KOTA MANADO Rendy Sangga; Bobby Polii; Aneke Tarore
COCOS Vol. 13 No. 1 (2021): EDISI JANUARI-MARET 2021
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i2.32449

Abstract

ABSTRAKAir is a mixture of several types of gases whose ratio is not fixed, depending on the stateof air temperature, air pressure and the surrounding environment. Air pollution is the presenceof one or several contaminants in the atmospheric air, such as dust, foam, gas, fog, smells ofsmoke or vapor in large quantities with various properties or duration in the air, so that theycan cause disturbances to the life of humans, plants or animals or objects or without clearreasons can already affect the sustainability of the life of organisms and objects. This researchwas conducted for one month, from August to September 2020. The research site wasconducted at the air quality observation station in the Provincial Environmental Service. Airquality measurement results. The tools used are computers, writing instruments and a camera.The research method used is secondary data analysis (collecting data and analyzing secondarydata). The gas concentrations in ambient air in Wanea District, Manado City each have thefollowing ranges: SO2 is 10 μg / Nm3 - 18 μg / Nm3; NO2 is 1 μg / Nm3-95μg / Nm3 and COis 20-923 μg / Nm3. The maximum concentrations of SO2, NO2 and CO gases in the ambientair in Wanea District, Manado City are below the required quality standard.Kata Kunci: Pencemaran Udara Di Kota Manado
INSIDENSI PENYAKIT KERDIL (Bunchy top virus) PADA TANAMAN PISANG (Musa paradisiaca L) DI KECAMATAN AER TEMBAGA KOTA BITUNG Sasmita Mokolintad; Redsway Maramis; Henny Makal
COCOS Vol. 13 No. 1 (2021): EDISI JANUARI-MARET 2021
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i2.32450

Abstract

ABSTRACTBanana (Musa paradisiaca L) is a commodity that is quite attractive to be developed andincreased its production, if it is viewed from the aspect of International trade. Indonesia is acountry is ranked sixth out of the to ten Banana producers in the world and accounts for around30% of domestic fruit production. Banana plants can grow well in low and high areas with analtitude of not more than 1600m above sea level. Many factors can inhibit plant growth,including disease attacks. Some Banana cuktivars that have been released are infected with theBunchy Top Virus. This study aims to determine the Incidence of Bunchy Top Virus attack onBanana plants in Bitung City, Aer Tembaga District, which is located in three villages, namely inKasawari Village, Makawidey Village, and Tandurusa Village. This research was carried out forthree from October to December 2018. This research was conducted by survey method or directobservation at the research location. The results of research on the Incidence of BananaBunchyTop Virus in Bitung city, Aer Tembaga sub-district in three villages. The highest averageIncidence of dwarf disease was in Makawidey villages 11,3%, followed by Tandurusa villages at10,6% then the ;owest Incidence occurred in Kasawari villages 3,45%.
INSIDENSI PENYAKIT KARAT PUTIH (Puccinia horiana) PADA TANAMAN KRISAN (Chrysanthemum spp.) DI KELURAHAN KAKASKASEN II, KOTA TOMOHON Glowdia L. Opod; Assa Berty Herny; Robert William Tairas
COCOS Vol. 13 No. 1 (2021): EDISI JANUARI-MARET 2021
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i2.32481

Abstract

ABSTRACKThis study aims to determine the symptoms of disease and the incidence of white rust inchrysanthemum plants in Kakaskasen II, Tomohon City. This research was conducted at theGreen House of chrysanthemum farmers in Kakaskasen II Village, Tomohon City in July untilSeptember 2020. The results of observations of symptoms of attack and incidence of rust diseasePuccinia horiana on chrysanthemum plants in Kakaskasen II, Tomohon City from the firstobservation to the last observation tend to remember with an average incidence of disease attackin Green House A is 45.90% and an average incidence of white rust disease in Green House B is36.86%.Keywords: White Rust Disease, Chrysanthemum Plants
Pemanfaatan Ekstrak Daun Pepaya (Carica papaya L.) terhadap Hama Spodoptera frugiperda J.E. Smith (Lepidoptera: Noctuidae) Christian F.A. Rumende; Christina L. Salaki; James B. Kaligis
COCOS Vol. 13 No. 1 (2021): EDISI JANUARI-MARET 2021
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i2.32482

Abstract

ABSTRACTOne of the pests that are detrimental to maize farmers today is the armyworm (S.frugiperda) which attacks maize crops. In general, farmers use chemical insecticides whichare effective but very dangerous to the health of the body and the environment. Carica papayais a plant whose leaves can be used as a botanical insecticide because the secondarymetabolite compounds in these plants can be used as insecticides. The purpose of this studywas to determine the effect of papaya leaf extract on the mortality of S. frugiperda larvae.The method used is data analysis in the form of LC50. In this test using a solutionconcentration of 100 grams/L, 300 grams/L, 500 grams/L, and 700 grams/L with fourrepetitions. The results of the observation of mortality from 24 hours to 96 hours aftertreatment with a solution concentration of 700 grams/L were the solutions that had thegreatest mortality, namely 100% and from the LC50 calculation, the value was 35.457%.This is due to the content of papaya leaf extract which is gastric poison, respiratory poisonand contact poison that can kill S. frugiperda larvae. Papaya leaves can be an alternative toinsecticide for controlling the pest of S. frugiperda.Keywords: Botanical Insecticide, LC50, Mortality.

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