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All Journal Kultivasi Caraka Tani: Journal of Sustainable Agriculture Agrotechnology Research Journal AGRINULA: Jurnal Agroteknologi dan Perkebunan

Fransisca Natalia Sihombing

Magister Program Of Agribusiness, Faculty Of Agriculture, Universitas Sumatera Utara, Medan

Author-ID : 2382595

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science

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Articles

Potensi metabolit sekunder gulma sebagai pestisida nabati di Indonesia Koko Tampubolon; Fransisca Natalia Sihombing; Zavandri Purba; Sony Tri Septian Samosir; Syahibal Karim
Kultivasi Vol 17, No 3 (2018)
Publisher : Universitas Padjadjaran

Sari. Tujuan kajian ilmiah ini adalah untuk mengetahui manfaat dan mekanisme metabolit sekunder gulma, kelebihan dan kekurangan pestisida nabati gulma, identifikasi metabolit sekunder gulma, prosedur pembuatan pestisida nabati dari gulma, dan implikasi kebijakan dari pestisida nabati gulma dalam mengendalikan organisme pengganggu tanaman. Hasil kajian menunjukkan potensi senyawa metabolit sekunder dari gulma dapat berfungsi ganda sebagai pestisida nabati. Kelebihan pestisida nabati dari gulma antara lain: (1) metabolit sekunder gulma bersifat organik dan tidak bersifat racun, (2) gulma yang digunakan mudah diperoleh dari lapangan dan tidak membutuhkan biaya yang mahal, (3) beberapa mekanisme metabolit sekunder gulma tidak ditemui dalam mekanisme kerja pestisida sintetis, (4) memiliki lebih dari satu metabolit sekunder setiap spesies gulma yang manfaatnya ganda dalam mengendalikan OPT, (5) tidak menimbulkan keracunan pada tanaman budidaya, (6) dapat dikombinasi dengan pengendalian hama terpadu, (7) dapat diterapkan dalam skala perorangan maupun kelompok tani, dan (8) tidak menyebabkan hama, bakteri, nematoda, jamur dan OPT lainnya menjadi resisten. Pengujian skrining fitokimia dari gulma diperlukan agar tepat sasaran dalam mengendalikan OPT. Kebijakan yang dilakukan dalam penerapan pestisida nabati dari gulma, antara lain: petani diharapkan dapat mengekstrak dan mengaplikasikan metabolit sekunder gulma, serta Kementerian Pertanian bekerja sama dengan lembaga penelitian atau universitas dalam pengujian metabolit sekunder gulma, dan membentuk kelompok tani dalam memproduksi serta menciptakan hak paten pestisida nabati dari gulma. Kata kunci: Gulma, Metabolit Sekunder, Pestisida Nabati.Abstract. The purpose of review is to determine the benefits and mechanisms of secondary metabolites from weed, the advantages and disadvantages of natural pesticides from weed, identification of secondary metabolites from weed, procedures for making natural pesticides from weeds, and policy implications of natural pesticides from weed in controlling plant pests. The results of review showed that the potency of secondary metabolites from weeds can be multiple as natural pesticides. The advantages of natural pesticides from weeds included: (1) secondary metabolites from weeds that are organic and not toxic, (2) weeds are easily obtained from the field and do not require expensive costs, (3) several mechanisms of secondary metabolites from weed not found in the mechanism of synthetic pesticides, (4) weeds have more than one secondary metabolite of with multiple benefits in controlling pests, (5) does not cause toxication in crops, (6) can be combined with integrated pest control, (7) can be applied in an individual scale and farmer groups, and (8) do not cause pests, bacteria, nematodes, fungi, and other pests to become resistant. The weed phytochemical screening is needed to make precise pest controlling. Policies that carried out in the application of natural pesticides from weeds are: farmers are expected to extract and apply pesticides from weeds, and Ministry of Agriculture collaborates with university or research institutions in secondary metabolites from weed testing, and forming farmer groups to producing and creating patent of natural pesticides from weeds.Keywords: Natural Pesticides, Secondary Metabolite, Weeds

Identifying the Factors Contributing to the Volume of Coffee Export from North Sumatra to the United States, Malaysia and Japan Fransisca Natalia Sihombing; Tavi Supriana; Sri Fajar Ayu
Caraka Tani: Journal of Sustainable Agriculture Vol 36, No 1 (2021): April
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v36i1.43357

The fluctuation of coffee export from North Sumatra to the three primary destination countries, including the United States, Malaysia and Japan, has never been reported simultaneously. The research was aimed to analyze the factors affecting the volume of coffee export from North Sumatra to the United States, Malaysia and Japan. The research was conducted in November 2019 until March 2020. This study employed secondary data, which were obtained from the Statistics of Sumatera Utara, International Coffee Organization, Bank Indonesia and Trading Economics in the time series of 34 years (1986 until 2019). The data were analyzed using the quantitative descriptive method with the panel data regression analysis by applying the Chow and Hausman tests with the Eviews 10 software. The analysis results show that the Free on Board (FOB) value, Indonesia Coffee Prices (ICP), Rupiah Exchange Rate (RER), Gross Domestik Product (GDP) per capita and coffee yield simultaneously and significantly affected the Coffee Export Volume (CEV) from North Sumatra to the United States, Malaysia and Japan. The FOB value, ICP and coffee yield had a partially significant positive effect on the CEV from North Sumatra to the three countries. The GDP per capita had a partially significant negative effect, while the RER did not put significant effect on the CEV. The FOB value, ICP and coffee yield are necessary to be increased for maintaining and supporting a rise in the volume of coffee export from North Sumatra.

Similarity and Phylogenetic Analysis of Herbicide-Resistant Goosegrass (Eleusine indica) Biotypes Koko Tampubolon; Fransisca Natalia Sihombing; Elseria Siburian; Yustina Sri Sulastri; Zavandri Purba; Sony Tri Septian Samosir; Syahibal Karim
Caraka Tani: Journal of Sustainable Agriculture Vol 34, No 2 (2019): October
Publisher : Universitas Sebelas Maret

Molecular approach as a herbicide-resistant agent detector is an initial solution before controlling of Eleusine indica weed. This review article is aimed to obtain the basic data of similarity and phylogenetic values among herbicide-resistant E. indica biotypes. This research used a descriptive analytical method. The analysis involved 14 nucleotide sequences of herbicide-resistant E.indica biotypes obtained from the National Center for Biotechnology Information. The nucleotide alignment of herbicide-resistant E. indica biotypes was conducted with ClustaLW using the Molecular Evolutionary Genetics Analysis (MEGA) v. 5.05 software based on a method of neighbor-joining tree construct/test. The results showed that two nucleotides of 7,921 herbicide-resistant E. indica biotypes were homologous (sequence 1,231 and sequence 1,408). The similarity values among herbicide-resistant E. indica biotypes ranged from 0.00 to 1.19. The information of phylogenetic pattern is needed in the selection of the herbicides mode of action rotation in order to control herbicide-resistant E. indica biotypes.

Regresi Faktor Curah Hujan, Kelembaban Udara, dan Hari Hujan terhadap Produksi Lada serta Alternatif Kebijakan di Sumatera Utara Fransisca Natalia Sihombing; Koko Tampubolon; Triara Juniarsih
Agrinula : Jurnal Agroteknologi dan Perkebunan Vol 3 No 2 (2020): Agrinula : Jurnal Agroteknologi dan Perkebunan
Publisher : Prodi. Agroteknologi dan Perkebunan, Universitas Tjut Nyak Dhien

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36490/agri.v3i2.102

Introduction: This research was aimed to determine the relationship pattern of rainfall, humidity, and rainy day on the increase in pepper yield in North Sumatra. Materials and Methods: This research used the time-series data on factors of rainfall, humidity, rainy day, and yield of pepper for 14 years (2005 until 2018). Data analysis used the multiple linear regression analysis with the Eviews 10 software. Results: The rainfall, humidity, and rainy day simultaneous significantly increased the pepper yield of 55.767% in North Sumatra. A 1% increase in humidity can increase the pepper yield by 0.455 ton, but a 1 mm.year-1 increase in rainfall and a 1 rainy day can decrease the pepper yield in North Sumatra by 0.503 and 1.866 ton, respectively. The humidity had the value positive, meanwhile rainfall and rainy day had the value negative in pepper yield.

Skrining dan Efektivitas Metabolit Sekunder Mikania micrantha pada Gulma Jajagoan serta Dampaknya terhadap Padi Sawah Alridiwirsah Alridiwirsah; Koko Tampubolon; Fransisca Natalia Sihombing; Wan Arfiani Barus; Irna Syofia; Tengku Boumedine Hamid Zulkifli; Zavandri Purba
Agrotechnology Research Journal Vol 4, No 2 (2020): Agrotechnology Research Journal
Publisher : Perkumpulan Agroteknologi/Agroekoteknologi Indonesia

Secondary metabolites from Mikania micrantha could be expected to control barnyardgrass (Echinochloa crus-galli) characteristics and have an effect on lowland rice. This research was aimed to screening of secondary metabolites in M. micrantha extract, obtaining the greater extract concentration in suppressing the barnyardgrass growth, and determine the impact on the lowland rice characteristics. This method used was Randomized Completely Block Design in non-factorial within the concentration rates of M. micrantha extract using ethanol 96% (0%; 20%; 40%; 60%; 80%; 100%, and herbicide 2,4-D dimethylamine at the dose of 1 l ha-1 as a comparison). Lowland rice and barnyardgrass characteristics were analyzed using F-test and followed by DMRT at 5% with SPSS software. The result showed that M. micrantha had secondary metabolites include alkaloids, flavonoids, and tannins. The concentration at 20 to 100% significantly decreased the fresh- and dry-weight of barnyardgrass with the highest suppressing found in 60% concentration by 65.91% and 67.92%, respectively compared to un-sprayed. The concentrations at 20% and 60% were classified as inhibiting the growth biomass of barnyardgrass. The concentrations at 20%, 60%, and 80% can still encourage the tillers growth of lowland rice. An extract concentration of M. micrantha at 20% can be applied to inhibit the growth of barnyardgrass biomass and stimulate the lowland rice tillers.

Co-Authors Alridiwirsah Elseria Siburian Irna Syofia Koko Tampubolon Koko Tampubolon Sony Tri Septian Samosir Sony Tri Septian Samosir Sri Fajar Ayu Syahibal Karim Syahibal Karim Tavi Supriana Tengku Boumedine Hamid Zulkifli Triara Juniarsih Wan Arfiani Barus Yustina Sri Sulastri Zavandri Purba Zavandri Purba Zavandri Purba

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