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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) JURNAL ILMU PERTANIAN Jurnal Penelitian Karet Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Indonesian Journal of Agricultural Research Journal of Sylva Indonesiana International Journal of Basic and Applied Science Obor: Oikonomia Borneo PERTANIAN TROPIK Journal of Environmental and Development Studies
Nini Rahmawati
Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Physics Social Sciences Veterinary

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POTENSI DAN KOMPATIBILITAS MIKORIZA VESIKULAR ARBUSKULAR (MVA) DENGAN BIBIT TANAMAN KARET (Hevea brasiliensis MUELL Arg.) KLON PB 260 Hanafiah, Asmarlaili Sahar; Dalimunthe, Afifudin; Rahmawati, Nini
Jurnal Penelitian Karet JPK : Volume 32, Nomor 1, Tahun 2014
Publisher : Pusat Penelitian Karet - PT. Riset Perkebunan Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/ppk.jpk.v32i1.148

Abstract

Tujuan penelitian adalah untuk menguji potensi dan kompatibilitas Mikoriza Vesikular Arbuskular (MVA) dengan bibit karet (Hevea brasiliensis MUELL Arg.) stump klon PB 260 yang masih mempunyai daun payung dua, berasal dari Balai Penelitian Sungei Putih di rumah kasa.  Uji potensi dan kompatibilitas dilakukan menggunakan rancangan acak kelompok (RAK) non faktorial dengan tiga ulangan, dan delapan perlakuan MVA yaitu dua isolat MVA indigenous karet, lima isolat MVA koleksi laboratorium Biologi Tanah FP USU dan tanpa MVA (kontrol).  Diinnokulasikan spora MVA sesuai perlakuan dilakukan dengan memberikan sebanyak 20 spora per polybag disekitar perakaran bibit tanaman karet. Pengamatan dilakukan setelah terbentuk daun payung tiga. Variabel yang diamati meliputi derajat infeksi akar oleh mikoriza, serapan hara P, dan pertumbuhan tanaman. Hasil penelitian menunjukkan bahwa dari beberapa isolat yang diujikan ternyata isolat Acaulospora sp 1 (kuning besar) dan isolat Acaulospora sp 2 (kuning kecil) mempunyai kemampuan beradaptasi yang tinggi dengan bibit tanaman karet yang diujikan, ditunjukkan oleh derajat infeksi akar yang tinggi yaitu 55% dan 48% yang berbeda sangat nyata dari perlakuan lain.  Untuk serapan unsur hara P, tanaman yang diinokulasi dengan  kedua isolat ini mempunyai kandungan P yang tertinggi, masing masing 34 mg P dan 35 mg P.  Kedua isolat ini adalah isolat koleksi Laboratorium FP USU.  Masa penelitian uji potensi ini hanya 7 minggu menyebabkan perlakuan terhadap beberapa variabel yang diamati  tidak berpengaruh nyata.  Diterima : 18 Oktober 2013; Direvisi : 8 November 2013; Disetujui : 12 Desember 2013 How to Cite : Hanafiah, A. S., Dalimunthe, A., & Rahmawati, N. (2014). Potensi dan kompatibilitas mikoriza vesikular arbuskular (MVA) dengan bibit tanaman karet (hevea brasiliensis muell arg.) klon PB 260. Jurnal Penelitian Karet, 32(1), 31-36. Retrieved from http://ejournal.puslitkaret.co.id/index.php/jpk/article/view/148
Development of mangrove tourism area through making tourism umbrellas as well as private society preparation in Regemuk village Pantai Labu Sub-Distric Deli Serdang District Bakti, Darma; Rosmayati; Rahmawati, Nini
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 2 (2019): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (353.394 KB) | DOI: 10.32734/abdimastalenta.v4i2.4179

Abstract

Regemuk Village has the potential to be developed into a new tourist destination village. The village which is located along the coastline of Deli Serdang Regency is geographically the closest village to Medan City and the location is adjacent to Kuala Namu Airport. One of the advantages of this village is the presence of a stretch of mangrove forest which is still quite good along the 7 km coastline. The development of the village into one of the beach tourism destinations has been a long-term discourse, but until now it has not been implemented. To realize this, it is necessary to explore the development of supporting facilities in order to initiate the development of the village into a tourist destination mangrove tourism area. Seeing this reality, the USU PPM Implementation Team through the Professor Serves Program Scheme helped community problems by developing mangrove forest areas and providing supporting facilities, namely beach tourism park umbrellas. The existence of this facility is expected to help increase the carrying capacity of this newly formed tourist site. This program will encourage the spirit of the realization of mangrove tourism areas and be able to produce other downstream tourism products.
Analisis Pertumbuhan Tanaman Porang dengan Pemberian Fitosan dan Kompos Jerami Padi di Lahan Salin Kurnia Selekta Etika Harefa; Rosmayati Rosmayati; Nini Rahmawati
AGRIUM: Jurnal Ilmu Pertanian Vol 26, No 1 (2023)
Publisher : UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/agrium.v26i1.13738

Abstract

Tanaman porang merupakan salah satu produk yang memiliki prospek seperti bahan pangan alternatif sehingga peningkatan produksi terus diupayakan, termasuk memanfaatkan lahan marginal seperti tanah salin. Porang merupakan tanaman yang rentan terhadap salinitas dan memiliki masalah dormansi 4-5 bulan. Arahriset ini ialah untuk mengidentifikasi ciri fisiologis tanaman porang dan mematahkan dormansi dengan penambahan fitosan dan penambahan kompos jerami padi pada tanah salin. Penelitian ini menggunakan RAK faktorial dengan 3 ulangan dan 2 faktor yaitu konsentrasi fitosan K0 = 0 ppm, K1 = 750 ppm, K2 = 1500 ppm dan K3 = 2250 ppm; aplikasi kompos jerami padi J0 = 0 ton/ha (kontrol), J1 = 5 ton/ha (45 g/ tanaman) dan J2 = 10 t/ha (90 g/tanaman). Pemberian konsentrasi fitosan 2250 ppm dan 10 ton/ha (90 g/tanaman) kompos jerami padi mempengaruhi secara nyata terhadap parameter kemunculan bulbil, jumlah bulbil, panjang akar, bobot basah akar, bobot kering akar dan volume akar
The Effect of Gibberelin in Salin Soil on Growth of Vetiver (Vetiveria zizanioides L.) Novita, Aisar; Rahmawati, Nini; Cemda, Abdul Rahman; Nora, Silvia; Harahap, Fitra Syawal
Jurnal Online Pertanian Tropik Vol. 8 No. 1 (2021): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (620.804 KB) | DOI: 10.32734/jopt.v8i1.6359

Abstract

Salinity is one of the problems in agricultural land in the world, including in Indonesia. Vetiver is quite tolerant of planting in saline soils at a certain level of salinity, but vetiver growth is inhibited at high salinity levels. The purpose of this study was to evaluate the effect of gibberellin in saline soils on the growth and production of vetiver (Vetiveria Zizanioides L.). This research was conducted in the greenhouse of the Faculty of Agriculture, Universitas Sumatra Utara, Medan. This study used a non-factorial completely randomized design, It was salinity stress (S) which consisted of 3 factors: Gibberellin concentrations of 0 (without treatment), 50 ppm, and 100 ppm. The results of this study indicate that giving Gibberellins in salinity stress conditions has a significant effect on the observed variables of plant height, specific leaf area, and cuticle thickness.
The analysis of decomposition rate of Vermigot fertilizer (vermicompost and kasgot) by utilizing of Black Soldier Fly larvae and earthworms with and without technique feeding Sebayang, Nur Ulina Warnisyah; Sabrina, Tengku; Rahmawati, Nini; Lubis, Nursiani
Jurnal Online Pertanian Tropik Vol. 8 No. 3 (2021): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (268.842 KB) | DOI: 10.32734/jopt.v8i3.7423

Abstract

ABSTRACT One of the efforts in managing waste is to carry out environmentally friendly bioconversion with one of the most popular composting is vermicomposting. The use of insects in composting is also one of the new technologies, namely the Black Soldier Fly larvae. The combination of two types of decomposing organisms that are synergistic can increase the effectiveness of the decomposition process. The purpose of this study was to analyze the rate of decomposition of vermigot fertilizer in the treatment of cow manure and banana stem waste by utilizing a combination of BSF larvae and earthworms. This study used a non-factorial randomized block design method with 2 techniques (feeding and without feeding), namely D0 = without decomposers; D1 = earthworm (100%); D2 = BSF larvae (100%); D3 = earthworms: BSF larvae (50% : 50% kg); D4 = earthworms : BSF larvae (25% : 75%); D4 = earthworms: BSF larvae (75% : 25%). The results of this study showed that the pH of the vermigot ranged from neutral to slightly alkaline (6.4 - 7.8) in the non-feeding technique, while the pH of the vermigot in the feeding technique was slightly acidic (5.7 - 5.8). The temperature of the vermigot in the non-feeding and feeding technique is the same, ranging from (26 - 31oC) but in the non-feeding technique the temperature tends to rise until the 5th day and tends to decrease on the 7th day to the 21st day. Meanwhile, the temperature of the vermigot with the feeding technique tends to experience fluctuations.
Response on Growth and Production of Vetiver (Vetiveria zizanioides L.) on Gibberelin Under Salinity Stress Conditions Novita, Aisar; Rahmawati, Nini; Harahap, Fitra Syawal; Walida, Hilwa; Cemda, Abdul Rahman; Fitria; Julia, Hilda; Susanti, Rini; Pratomo, Bayu; Nora, Silvia; Mariana, Merlyn; Basri, Arie Hapsani Hasan
Indonesian Journal of Agricultural Research Vol. 4 No. 1 (2021): InJAR, Vol. 4, No. 1, March 2021
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/injar.v4i1.5514

Abstract

Vetiver (Vetiveria zizanioides L.) plants are able to protect the soil from erosion and are tolerant of salinity stress. However, at high salinity levels, vetiver plants show a decreasing growth. The application of gibberelin is expected to increase the growth of vetiver in salinity stress conditions. The purpose of this study was to evaluate the growth responsiveness and production of vetiver the application of gibberelin under salinity stress conditions. This research was conducted in the green house of the Faculty of Agiculture, Universitas Sumatera Utara, Medan. This study used a non-factorial completely randomized design, namely the salinity stress (S) which consisted of 3 levels, each treatment was repeated 3 times, so that 9 treatment combinations were obtained: the concentration of gibberelin was 0 (no treatment), 50 ppm and 100 ppm.
Evaluation of Macro Nutrition in Some Hybrid Clones of Eucalyptus spp. on Andisol and Inceptisol Soil in North Sumatra Sinurat, Darwin; Hanum, Hamidah; Rahmawati, Nini; prit, Kanvel; Hutagaol, Adventris
Journal of Sylva Indonesiana Vol. 7 No. 02 (2024): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsi.v7i02.12500

Abstract

Eucalyptus spp. is one of the most widely planted genera for pulp and paper industrial forests (Hutan Tanaman Industri/HTI) in the world, specifically in Indonesia, due to its productivity and wood properties. The growth and productivity of eucalypts in North Sumatra depend on the type of soil and the clone used. The purpose of this study was to look at the macronutrient content in different soil types and to evaluate the macronutrient content in plant biomass with different clones to keep the nutrient conditions in the soil maintained. This research was conducted at 3 of the eucalyptus plantation sector in North Sumatera with hybrids of eucalyptus clones that were 48 months old. Height, diameter breast height (DBH), and survival data were taken. Wood, leaf, bark, and soil samples were taken for nutrient analysis in the laboratory. The results showed that there were differences in soil macronutrients (N, P, K, Mg, and Ca) among the three types of soil. The average growth also showed a significant difference in growth in each soil order. There were differences in nutrients in plant biomass for the clones tested, and there were differences in nutrients in each part of the plant biomass. Wood and bark that were taken from the tree while harvesting had a greater amount than the biomass that stays in the field (leaf and branch). The different fertilization regimes in the research area are one way to increase the productivity of eucalyptus plants in the field
PENGARUH PROGRAM KESELAMATAN KESEHATAN KERJA (K3) DAN DISIPLIN KERJA TERHADAP KINERJA KARYAWAN PT. GSA (GEMILANG SEJAHTERA ABADI) AFDELING 2 KAB. KUTAI TIMUR Rahmawati, Nini; Yuliddar Abbas, M Astri
OBOR: Oikonomia Borneo Vol. 5 No. 1 (2023): April
Publisher : University of Widya Gama Mahakam Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24903/obor.v5i1.2181

Abstract

Keselamatan kesehatan kerja dan disiplin kerja merupakan salah satu faktor yang berpengaruh untuk membangun kinerja karyawan. Tujuan dari penelitian ini yaitu untuk mengetahui program keselamatan kesehatan kerja dan disiplin kerja apakah berpengaruh terhadap kinerja karyawan PT. GSA (Gemilang Sejahtera Abadi) Afdeling 2 Kab. Kutai Timur. Pada penelitian ini menggunakan jenis penelitan kuantitatif, dari 100 populasi, sampel yang digunakan yaitu sebanyak 80 karyawan yang dihitung menggunakan skala likert dengan estimasi eror 5%.Instrumen penelitian yang digunakan yaitu uji validitas dan realibilitas, uji asumsi klasik, dengan uji hipotesis yaitu koefisien korelasi, koefisien determinasi r² serta uji t dan uji f. Hasil penelitian menunjukkan bahwa terdapat pengaruh antara keselamatan kesehatan kerja terhadap kinerja karyawan dengan t hitung 4,922 > t tabel 1,991, disiplin kerja tidak berpengaruh terhadap kinerja karyawan dilihat dari t hitung 0,291 < t tabel 1,991, dan keselamatan kesehatan kerja dan disiplin kerja berpengaruh terhadap kinerja karyawan ditunjukkan dari Fhitung sebesar 11,997 > 3,11 dengan signifikasi 0,000 < 0,05. berdasarkan hasil penelitian tersebut dapat disimpulkan bahwa keselamatan kesehatan kerja dan disiplin kerja berpengaruh terhadap kinerja karyawan.
Effectiveness of horizontal and vertical constructed wetlands performance systems with some vegetation on domestic waste concentrations Harahap, Azmi wijayanti; Rosmayati, Rosmayati; Rahmawati, Nini
International Journal of Basic and Applied Science Vol. 12 No. 3 (2023): December: Basic and Applied Science
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Population growth has resulted in the demand for waste water reclamation increasing rapidly. CW systems are an inexpensive technology with little or no energy requirements and very minimal equipment requirements, resulting in low construction costs. This research will test improving the quality of domestic wastewater using a Vertical Flow Artificial Wetland (VFCW) and Horizontal Flow Artificial Wetland (HFCW) system using kangkong, water hyacinth and lotus vegetation. The results of the research carried out can be concluded as follows: in water spinach vegetation there is no difference in the concentration of BOD, COD, DO, Oil and Fat, Detergent, Ammonia, and total coliform parameters of the horizontal CW type and the vertical CW type. In water hyacinth vegetation there were no differences in the concentrations of BOD, COD, DO, Oil and Fat, Detergent, Ammonia, and total coliform parameters of the horizontal CW type and vertical CW type. In lotus vergetation there were no differences in the concentration of BOD, COD, DO, Oil and Fat, Detergent, Ammonia, and total coliform parameters of the horizontal CW type and vertical CW type. In the research results, there is no significant difference in the horizontal CW and vertical CW types in improving water quality, especially domestic waste, you can use horizontal CW or vertical CW types.
Growth and biochemical responses of red chili (Capsicum annuum L) under drought conditions with 6-Benzylaminopurine application Sihotang, Tambun; Siregar, Luthfi Aziz Mahmud; Rahmawati, Nini
International Journal of Basic and Applied Science Vol. 13 No. 2 (2024): Sep: Basic and Applied Science
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/ijobas.v13i2.404

Abstract

The purpose of this research is to assess how red chili plants (Capsicum annuum L.) develop and react biochemically to drought stress, as well as how cytokinin treatment affects these plants. The study employed a factorial Randomized Block Design (RAK) with three replications and two components, namely the degree of drought with three stages, comprising: K1 has an 80% soil water content, K2 has a 60% soil water content, K3 has a 40% soil water content, and S0, S1, S2, and S3 have 0 ppm, 10 ppm, 20 ppm, and 30 ppm of 6-benzylaminopurine concentration, respectively. Plant height, leaf count, root length, flowering age, total and aqueous chlorophyll content, activity of antioxidant enzymes (e.g., superoxide dismutase and peroxide dismutase), and hydrogen peroxide as a signal for plant molecules against dehydration stress are among the parameters assessed. The findings demonstrated that red chili plants under drought stress experienced slower growth, as seen by a reduction in height and leaf count as well as earlier flowering. However, by raising plant height, leaf count, and chlorophyll levels (a, b, and total), cytokinin treatment was able to lessen the deleterious impacts of drought. When treated with 10 ppm 6-Benzylaminopurine, the enzyme activity of superoxide dismutase, peroxide dismutase, and hydrogen peroxide increased, but at other dosages, it tended to decrease, suggesting a slight but noticeable increase in plant defense mechanisms against oxidative stress. Therefore, giving red chili plants 10 parts per million of cytokinin may be a useful tactic for enhancing their resistance to drought stress.
Co-Authors Afifudin Dalimunthe, Afifudin Arie Hapsani Hasan Basri Asmarlaili Sahar Hanafiah Cemda, Abdul Rahman Darma Bakti Delvian Fitria Hamidah Hanum Harahap, Azmi wijayanti Harahap, Fitra Syawal Hilda Julia Hutagaol, Adventris Kurnia Selekta Etika Harefa Lubis, Nursiani Luthfi Aziz Mahmud Siregar Mariana, Merlyn Nur Ulina Warnisyah S Sebayang, Nur Ulina Warnisyah S Pratomo, Bayu prit, Kanvel Ridwansyah Rini Susanti Rosmayati Rosmayati Rosmayati Rosmayati Rosmayati Sihotang, Tambun Silvia Nora, Silvia Sinurat, Darwin Tengku Sabrina Walida, Hilwa Yaya Hasanah Yuliddar Abbas, M Astri Zulfansyah, Ichfan