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All Journal HAYATI Journal of Biosciences Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian JURNAL PENDIDIKAN TAMBUSAI Jurnal Darma Agung Journal of Agriculture (JoA) Jurnal Pengabdian Pada Masyarakat METHABDI International Journal of Multidisciplinary Approach Research and Science Botani: Publikasi Ilmu Tanaman dan Agribisnis
Agnes Imelda Manurung
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PEMBERIAN PUPUK NITROGEN DAN PUPUK ORGANIK GRANUL TERHADAP PERTUMBUHAN DAN PRODUKSI BAWANG MERAH (ALLIUM CEPA L.) Manurung, Agnes Imelda; Sirait, Bilter A; Hulu, Tonasokhi; Marpaung, Robbert G
Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian Vol 4, No 1 (2019): Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian, Desember
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (441.143 KB) | DOI: 10.31289/agr.v4i1.2750

Abstract

This study aims to determine the response of growth and  production  of  shallot  (Allium cepa L.) to the Nitrogen fertilizer and Granule Organic fertilizer. The design used was a Factorial Completely Randomized Design consisting with two (2) treatment factors. The first factor is Nitrogen (N) from Urea which consists of three levels, namely: N1 = 2 g / plot, N2 = 4 g / plot and N3 = 6 g / plot. The second factor of Organic Granule fertilizer consisted of three levels, namely: G1 = 5 kg / plot, G2 = 10 kg / plot, G3 = 15 kg / plot. The results showed that interaction of Nitrogen fertilizer  and Granul Organic fertilizer significantly affected plant height, number of leaves, number of tillers and tubers wet weight per plot, but not significant for the number of flower stalks. The highest growth and production of shallots produced a combination of treatment N3 = 6 g / plot and G3 = 15 kg / plot.
PEMBERIAN PUPUK NITROGEN DAN PUPUK ORGANIK GRANUL TERHADAP PERTUMBUHAN DAN PRODUKSI BAWANG MERAH (Allium cepa L.) Manurung, Agnes Imelda; Sirait, Bilter A; Hulu, Tonasokhi; Marpaung, Robbert G
Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian Vol 4, No 1 (2019): Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian, Desember
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/agr.v4i1.2750

Abstract

This study aims to determine the response of growth and  production  of  shallot  (Allium cepa L.) to the Nitrogen fertilizer and Granule Organic fertilizer. The design used was a Factorial Completely Randomized Design consisting with two (2) treatment factors. The first factor is Nitrogen (N) from Urea which consists of three levels, namely: N1 = 2 g / plot, N2 = 4 g / plot and N3 = 6 g / plot. The second factor of Organic Granule fertilizer consisted of three levels, namely: G1 = 5 kg / plot, G2 = 10 kg / plot, G3 = 15 kg / plot. The results showed that interaction of Nitrogen fertilizer  and Granul Organic fertilizer significantly affected plant height, number of leaves, number of tillers and tubers wet weight per plot, but not significant for the number of flower stalks. The highest growth and production of shallots produced a combination of treatment N3 = 6 g / plot and G3 = 15 kg / plot.
Isolation and Characterization of Silaffin that Catalyze Biosilica Formation from Marine Diatom Chaetoceros gracilis AGNES IMELDA MANURUNG; ALBERTA RIKA PRATIWI; DAHRUL SYAH; MAGGY THENAWIDJAJA SUHARTONO
HAYATI Journal of Biosciences Vol. 14 No. 3 (2007): September 2007
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (292.311 KB) | DOI: 10.4308/hjb.14.3.119

Abstract

The method of making silica in industries requires extreme conditions. The finding of proteins involved in the formation of biosilica from diatoms, has opened up an alternative way of production. Chaetoceros gracilis is one of the diatoms, which is potential in producing silaffin protein. This study aimed to isolate and to characterize the protein. We also analyzed the protein activity toward tetraethoxyorthosilicate (TEOS) substrate in in vitro reaction. Diatom biomass was harvested and further kept in 2% SDS/100 mM EDTA solution. Protein isolation was conducted by dissolving the silica and separating the protein by soaking in 2 M HF/8 M NH4F. Protein concentration was analyzed using Bradford method and the molecular weight was estimated through SDS-PAGE. Protein activity was observed by reacting it with TEOS substrate to form silica polymer and measured by colorimetric molibdate assay. Protein concentration was 1.20 mg/ml and appeared filamentous. The apparent molecular weights consisted of 12, 23, 42, 44 kDa. These protein was able to polymerize the silica at room temperature within 10 min. As much as 85.65 umol TEOS was polymerized per 1.4 x 106 silaffin protein per min. SEM analysis showed the formation of spherical, aggregate biosilica. Key words: Chaetoceros gracilis, silaffin protein, biosilica, polymerization
PENGARUH PEMBERIAN PUPUK KANDANG AYAM DAN STRESS AIR TERHADAP PERTUMBUHAN BIBIT KELAPA SAWIT (ELAEIS GUINEENSIS JACQ.) VARIETAS TENERA DI PRE-NURSERY Culina Siringo-ringo; Agnes Imelda Manurung; Bilter A. Sirait
Jurnal Darma Agung Vol 29 No 2 (2021): AGUSTUS
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Darma Agung (LPPM_UDA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46930/ojsuda.v29i2.1058

Abstract

Penelitian ini bertujuan untuk menganalisa pengaruh pemberian pupuk kandang ayam dan stress air terhadap pertumbuhan bibit kelapa sawit (Elaeis guineensis Jacq.) varietas tenera di pre-nursery. Penelitian dilaksanakan di Jln.Bunga Ncole Raya XXX No.4, Kelurahan Kemenangan Tani, Kecamatan Medan Tuntungan dengan ketinggian tempat ± 12 mdpl, yang dimulai pada bulan Mei hingga bulan Agustus 2020. Metode Penelitian menggunakan Rancangan Acak Kelompok (RAK) faktorial terdiri dari dua factor, faktor pertama adalah perlakuan dosis pupuk kandang ayam terdiri atas 3 taraf: A0 = kontrol, A1= 25% Pupuk kandang ayam dan A2 = 50% pupuk kandang ayam. Faktor kedua adalah pemberian stress air terdiri atas 3 taraf: R1 = 0.3 l/polybag/hari, R2 = 0.3 l/polybag/2hari, dan R3 = 0.3 l/polybag/4hari. Hasil penelitian menunjukkan bahwa, perlakuan dosis pupuk kandang ayam berpengaruh nyata terhadap tinggi tanaman, panjang daun, lebar daun dan bobot basah tanaman bibit kelapa sawit. Perlakuan pemberian stress air berpengaruh nyata terhadap tinggi tanaman, panjang daun, lebar daun bibit kelapa sawit. Kombinasi perlakuan antara pemberian pupuk kandang ayam dan stress air tidak nyata terhadap seluruh peubah amatan.
PRELIMINARY RESEARCH THE EFFECT OF NAA AND BAP ON CALLUS OF BANANA (Musa acuminata L) WITH ADDITION OF FUSARIUM WILT DISEASE FROM Fusarium oxysporum f.sp.cubense (Foc) Bilter A. Sirait; Nur Synta Napitupulu; Agnes Imelda Manurung
Jurnal Darma Agung Vol 26 No 3 (2018): DESEMBER 2018
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Darma Agung (LPPM_UDA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (686.242 KB)

Abstract

THE EFFECTS OF NAA AND BAP ON Callus OF BANANA (Musa acuminata L) WITH THE ADDITION OF FUSARIUM WILT DISEASE FROM Fusarium oxysporum f.sp.cubense (Foc). This research was conducted on January to June 2016, at Tissue Culture Laboratory of Dinas Tanaman Pangan dan Hortikultura of North Sumatera Province, Jl.Karya Jasa No.6 Gedung Johor, Medan. The purpose of this research is to know the response of banana barangan callus (Musa acuminate L.) to fusarium (Fusarium oxysporum f. Sp.Cubens). The living callus is subsequently subcultured for organogenesis purposes by treatment of NAA and BAP. The research use Completely Random Design with two factors that is NAA and BAP. NAA consists of 3 levels: N1 = 1 ppm, N2 = 1.5 ppm and N3 = 2 ppm. The second factor using BAP consists of 3 levels: BA1 = 1.5 ppm, BA2 = 3 ppm and BA3 = 3.5 ppm. The results showed that the percentage of live callus after fusarium addition was only 33.33%, interaction of NAA and BAP did not significantly affect the percentage of live plantlets and wet weight of banana plantlet. The highest percentage of live plantlet on aged 9 - 13 week after subculture and the highest wet weight of planlet found on N1(1 ppm) each 7.05 % and 3.62 g, while the highest percentage of live plantlets on aged 9 - 13 Week after subculture and the highest wet weight of plantlet found on BA1 (1,5 ppm) each 5.69 % and 3.38 g. The treatment combinations that gave the highest percentage of planlets live and wet weight of planlet were N1BA1 and N1BA2.
PERTAMBAHAN PERTUMBUHAN BIBIT KELAPA SAWIT (ELAEIS GUINEENSIS JACQ) DI PRE NURSERY AKIBAT PERLAKUAN UREA DAN NPK Bilter A. Sirait; Agnes Imelda Manurung
Jurnal Darma Agung Vol 30 No 3 (2022): DESEMBER
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Darma Agung (LPPM_UDA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46930/ojsuda.v30i3.2402

Abstract

The purpose of this study was to determine the increasing of Growth of Oil Palm (Elaeis guineensis Jacq) Seedlings in Pre-nursery due to Urea and NPK Treatment. The study used a Completely Randomized Design (CRD) consisting of the first factor Urea fertilizer (U) which consisted of 3 treatment levels, namely U0 = control, U1 = 1.0 g baby polybag-1, and U2 = 2.0g baby polybag-1, while the factor NPK fertilizer (N) consisted of 3 treatment levels, namely N0 = control, N1 = 1.0 g baby polybag-1 and N2 = 2.0 g baby polybag-1. The results showed that with exception for the increase in leaf area, Urea and NPK treatments were not significant for increase of plant height (cm), stem diameter (cm), number of leaves (blades), leaf length (cm) and leaf width (cm), the results were also variative. Furthermore, conclusion of this research is that the higher the dose of urea and NPK fertilizer resulted in a higher increase in leaf area.
RESPON PERTUMBUHAN BIBIT KELAPA SAWIT (Elaeis guineensis Jacq.) DI PRE NURSERY AKIBAT PERLAKUAN UREA DAN PUPUK KANDANG KAMBING Bondar, Benito; Sirait, Bilter; Manurung, Agnes Imelda
JURNAL DARMA AGUNG Vol 32 No 1 (2024): FEBUARI
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Darma Agung (LPPM_UDA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46930/ojsuda.v32i1.4129

Abstract

The aim of this research was to determine the response of oil palm seedlings in pre nursery to Urea and Goat Manure treatment. This research used a factorial Randomized Block Design consisting of the first factor, Urea treatment with 3 levels, namely: U0 = 0 g/polybag, U1 = 3 g/polybag and U2 = 6 g/polybag. The second factor is the dose of Goat Manure (K) with 3 treatment levels, namely: K1 = 0 g/polybag, K2 = 200 g/polybag and K3 = 400 g/polybag. The results showed that fertilization with urea 6 g/polybag significantly increased plant height, stem diameter, number of leaves, leaf length, leaf width and leaf area. Treatment with a dose of Goat Manure at a dose of 400 g/polybag significantly increased the growth of plant height, stem diameter, number of leaves, leaf length, leaf width and leaf area. The combination between Urea and the dose of Goat Manure has a significant effect on plant height, stem diameter, number of leaves, leaf length, leaf width and leaf area.
Peningkatan Rata-Rata Lama Sekolah (RLS) dari Harapan Lama Sekolah (HLS) di Sumatera Utara Sabrina, R.; Manurung, Agnes Imelda; Sirait, Bilter A.
Jurnal Pendidikan Tambusai Vol. 6 No. 1 (2022): 2022
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v6i1.3625

Abstract

Rata-rata Lama Sekolah (AYS) di Sumatera Utara pada tahun 2020 adalah 9,54 tahun, sedangkan Harapan Lama Sekolah (EYS) adalah 13,23 tahun. Artinya tingkat pendidikan penduduk Sumatera Utara rata-rata tamat SLTP namun peluang bersekolah adalah tamat Diploma I. Disini kita dapat melihat kesenjangan antara rata-rata lama sekolah dengan lama sekolah yang diharapkan. . Menelaah berbagai dokumentasi guna menghasilkan alternatif kebijakan dan kegiatan peningkatan angka AYS dari EYS yang pada gilirannya akan meningkatkan Indeks Pembangunan Manusia (IPM) dan mengurangi kemiskinan. Metode penulisan artikel ini adalah melalui pengumpulan berbagai peraturan dan dokumen dari pemerintah pusat hingga pemerintah daerah selama November 2021 hingga Desember 2021, kemudian dilakukan kajian untuk merumuskan berbagai kebijakan dan kegiatan dengan menggunakan statistik deskriptif. Berdasarkan analisis data, berbagai kebijakan dan kegiatan yang dapat ditempuh untuk meningkatkan rata-rata lama sekolah dari lama sekolah yang diharapkan adalah dari perspektif siswa; biaya sekolah dibebaskan, beasiswa dan bantuan pendidikan ditingkatkan, pendidikan kesetaraan dan sosialisasi. Selanjutnya dari sisi guru; perlu menambah jumlah guru, pelatihan dan sertifikasi guru serta tambahan tunjangan guru, sedangkan dari sisi infrastruktur; perlu merehabilitasi dan melengkapi fasilitas sekolah, membangun sekolah baru dan menjamin aksesibilitas lokasi sekolah berupa jalan atau jembatan, moda transportasi dan bus sekolah gratis. Semakin lama rata-rata lama sekolah semakin tinggi Indeks Pembangunan Manusia, yang berimplikasi pada tingginya pola pangan harapan rumah tangga di Sumatera Utara.
Growth Response and Soybean Production (Glycine max L. Merr) Variety Anjasmoro and Grobogan on Giving Dosesof Fertilizer KCl Panataria, Lince Romauli; Sihombing, Parsaoran; Sitorus, Efbertias; Saragih, Meylin Kristina; Manurung, Agnes Imelda
International Journal of Multidisciplinary Approach Research and Science Том 2 № 01 (2024): International Journal of Multidisciplinary Approach Research and Science
Publisher : PT. Riset Press International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59653/ijmars.v2i01.387

Abstract

This Research was conducted on the BSP (Balai Seed Parent) Tanjung Selamat land on Jl. Education with an altitude of ± 25 meters above sea level. This Research uses a Split Plot Design (SPD) using 2 factors. The aim is to determine soybean plants' response to KCl fertilizer doses. The main plot is Variety (V), which consists of V1 = Anjasmoro and V2 = Grobogan. Subplots are KCl fertilizer (P), which consists of P0 = Without KCl fertilizer, P1 = 100 kg/ha KCl (9.6 g/plot), P2 = 200 kg/ha KCl (19.2 g/plot), and P3 = 400 kg/ha KCl (38.4 g/plot). The results showed that the treatment of soybean varieties significantly affected plant height, number of pods per plant, number of seeds per pod, number of seeds per plant, weight of seeds per plant, and weight of seeds per plot. Providing KCl fertilizer significantly affected plant height, number of pods per plant, number of seeds per pod, number of seeds per plant, seed weight per plant, and seed weight per plot. The interaction between Variety and KCl fertilizer dose had no significant effect on plant height, number of pods per plant, number of seeds per pod, number of seeds per plant, seed weight per plant, and seed weight per plot.
Breaking the Dormancy of Some Varieties of Papaya (Carica Papaya L.) Soaking KNO3 Solution Saragih, Meylin Kristina; Panataria, Lince Romauli; Sitorus, Efbertias; Manurung, Agnes Imelda
Journal of Agriculture Vol. 3 No. 02 (2024): Research Articles, July 2024
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v3i02.3963

Abstract

Dormancy is a state of stopping growth experienced by plants. This research aimed to determine the concentration of KNO3 solution in breaking dormancy in several papaya varieties. The research method used in this research was a completely randomized design (RAL) Factorial with 2 treatment factors. The first factor is variety (V), consisting of V1 = Callina, V2 = California, and V3 = Local. The second factor is the concentration of the KNO3 (K) solution consisting of: K0 = Control, K1 = 10%, K2 = 20% and K3 = 30%. The variables observed were growth synchrony and germination speed index. Data analysis uses analysis of variance. The variables observed were growth synchrony and germination speed index. An analysis of variance was used to test the effect of treatment. To test mean differences between treatments, honest significant difference tests, regression, and correlation were carried out at a test level of 5%. The research results showed that seed variety had a significant effect on growth synchrony and germination speed index. The concentration of KNO3 solution has a significant effect on growth synchrony and germination speed index. The interaction between the variety and concentration of KNO3 solution had no significant effect on all observed parameters.
Co-Authors ALBERTA RIKA PRATIWI Bilter A. Sirait Bondar, Benito Culina Siringo-ringo DAHRUL SYAH Efbertias Sitorus Endy Juli Anto Fauzi, Tengku M. Hulu, Tonasokhi Hutabarat, Samuel Hutapea, Kenal P. Jones Simatupang Laia, Sozanolo Lince Romauli Panataria Maggy Thenawidjaja Suhartono Maludin Panjaitan Marpaung, Robbert G Meylin Kristina Saragih Nababan, Manaor Bismar Posman Nur Synta Napitupulu Panataria, Lince Romauli Sabrina, R. SARAGIH, MEYLIN KRISTINA Siahaan, Jekson Martiar Sihombing, Parsaoran Silalahi, Emeraldo Martupa Silalahi, Veraci Simanjuntak, Pantas Simatupang, Aditia Erick Cantona Simatupang, Uli C. Simatupang, Ulina C. Jenni Sirait, Kilian Siti Normi, Siti Sitorus, Ragnar Oktavianus