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Delvian Delvian
Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Public Health Social Sciences Other

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Pertumbuhan Dan Produksi Kedelai Varietas Anjasmoro Pada Tanah Salin Usnawiyah, Usnawiyah; Delvian, Delvian
Agrium Vol 9, No 1 (2012)
Publisher : Faculty of Agriculture, Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/agrium.v9i1.1269

Abstract

 Increased soybean production  is  competing with the extension of the  use of agricultural land for  non- agricultural needs. Therefore the future expansion of agricultural land can only use marginal lands such as peatlands, wetlands and tidal lands. This paper discusses the growth and production of soybean varieties Anjasmoro in saline environments. Varieties Anjasmoro have total leaf area and the percentage ratio of the canopy  which  is  not  significantly  different  from  the  other  varieties  tested  except  Kipas  Merah.  In  the production of components, seed weight Anjasmoro 100 seeds varieties including higher and statistically the same as the varieties Kipas Putih dan Kipas Merah
Pengaruh Spesies Inang dan Sumber Nutrisi Terhadap Produksi Spora Fungi Mikoriza Arbuskula Delvian, Delvian
Jurnal Natur Indonesia Vol 10, No 2 (2008)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (24.904 KB) | DOI: 10.31258/jnat.10.2.70-72

Abstract

An experiment to study the effect of host species and source of nutrient on spore production of an ArbusculeMycorrhizal Fungus, Gigaspora margarita, has been carried out. Combination treatments studied consisted ofhost species (Zea mays and Pueraria javanica) and nutrient factor (no fertilizer, fertilizer and Red Hyponex).Growth medium used was a mix of soil and sand in 1: 1 ratio (v/v) which was sterilized. Results of the experimentshowed that spore production of G. margarita was affected by host species and also by nutrient applied, thoughthere was no interaction between the two factors. However, P. javanica produced more spore than Z. mays.Treatment with Red Hyponex result much higher spores than others, but however without fertilizer produced morespores than Urea, TSP and KCl fertilizers.
Peranan Cendawan Mikoriza Arbuskula Terhadap Pertumbuhan Leucaena leucocephala dalam Kondisi Cekaman Garam Delvian Delvian
Jurnal Agrista Vol 11, No 3 (2007): Volume 11 Nomor 3 Desember 2007
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

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Abstract

Rule of Arbuscule Mycorrhiza Fungi on Growth of Leucaena leucocephala Under Salt StressABSTRACT. Symbiosis Arbuscule Mycorrhiza Fungi (AMF) and plant were not only improving growth and nutrition absorption, but also crop tolerance salinity. Increasing of tolerance to salinity following colonization of AMF promising due to phosphate absorption more efficient. Phosphate absorption of mycorrhizal plant mount equal to 115% compared to non-mycorrhizal plant. This issue will improve growth of crop and decrease influence of toxic ions. Mycorrhizae also can lessen forming of proline equal to 64.47% one of the way of osmotic adjustment of non mycorrhizal plant to increase tolerance. Despitefully accumulate sodium in mucorrhizal plant lower than non mycorrhizal, were degradation of sodium accumulation equal to 61.58%.
Efektivitas Mikoriza Arbuskula dan Naungan pada Pertumbuhan Bibit Jati (Tectona grandis) Delvian Delvian
Jurnal Agrista Vol 12, No 2 (2008): Volume 12 Nomor 2 Agustus 2008
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

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Abstract

Effectiveness of Arbuscular Mycorhiza and Shanding in Growth of Teak SeedlingABSTRACT. Interaction between mycorrhizal inoculan dosage with level of shade was significantly affected of seedling growth of height, total dry weight matter, soot root ratio, P content, and degree of infected root by mycorrhizal. The usage of mycorrizal inoculants dosage at 10 g per seedling which combined with level of shade 75% gave the best for seedling growth of teak for siz moth old. Increasing level of shade 25% to 75% increased seedling growth of teak. Furthermore, seedling of teak that treated mycorrzal inoculants dosage at 100 g per seedling was more significantly affected of seedling growth than 5 g per seedling.
AKTIVITAS MIKROORGANISME TANAH PADA TANAH BEKAS KEBAKARAN HUTAN DI KABUPATEN SAMOSIR Agree Hutami Sinaga; Deni Elfiati; Delvian Delvian
Peronema Forestry Science Journal Vol 4, No 1 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (294.409 KB)

Abstract

Forest fire affect chemical, physical and biological properties of the soils. In the biological properties of the soil, forest fire also affects number of microorganisms and activity of microorganisms. The purpose of this research is calculate the value of soil microorganism with various periods of forest fires. The measure of the activities of microorganism using jar and titrimetri methods.The result of this research showed that value of  respiration in  unburn soil is 11,99. Value of respiration from forest fire soil in 2010 is 6,43. Value of respiration from  forest fire soil in 2011 is 10,28. Value of respiration from forest fire soil in 2012 is 16,28. Value of respiration from forest fire soil in 2013 is 11,14. Value of respiration from forest fire soil in 2014 is 8,14. Activity of microorganisms is almost the same between the occurrence of fire with soil unburn. Keywords: forest fire, soil microorganism, activity of microorganism
KEBERADAAN FUNGI PELARUT FOSFAT PADA TANAH BEKAS KEBAKARAN HUTAN DI KABUPATEN SAMOSIR Wika Astuti Sagala; Deni Elfiati; Delvian Delvian
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The forest fire effect chemical, psysical and biological propesties of the soil. In the biological of soil, forest fire also effect the existence of phosphates solubilizing fungi. This research was conducted to determine the presence of Phosphates Solubilizing Fungi  in the former soil of fired forest by the time of the fire in Samosir Regency. Soil samples taken from former soil of fired forest and unfire forest at a dept 0 – 20 cm around rhizosfir. Soil analysis carried out in Research and Technology of University of North Sumatera along with isolation and identification phosphates solubilizing fungi at the Laboratory Soil Biology Agroekoteknologi Studies Program Faculty of Agriculture, University of North Sumatera. The result showed that there were similitary and differences phosphates solubilizing fungi in former soil of fired forest and unfire forest. Phosphates solubilizing fungi consisting of 2 fungi genus there are Aspergillus and Penicillium. Keywords: Forest Fire, Phosphates Solubilizing Fungi
Keanekaragaman Mikoriza Arbuskula (FMA) pada Beberapa Tegakan di Areal Arboretum Universitas Sumatera Utara Ria Pertiwi Sianturi; Delvian Delvian; Deni Elfiati
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (682.068 KB)

Abstract

Existence and Status of Arbuscular Mycorrhizae Fungi is affected by biotic and abiotic factor. The goal of this research is to know diversity of Arbuskular Mycorrhiza Underneath of durian (Durio zibethinus), kemiri (Aleurithes moluccana), asam gelugur (Garcinia atroviridis), and karet (Hevea brasiliensis). Soil sample has been taken from Arboretum Universitas Sumatera Utara under of four tree of MPTS. This research use soil separating method to obtain spores and root coloring method to find out root colonization. The obtained an average spore density on kemiri is 42 spores/50 g soil, durian is 42 spores/50 g soil, karet is 50 spores/50 g soil and asam gelugur is 62 spores/50 g soil. The result shows on four tree of MPTS obtained 23 spores types of Glomus and 8 spores types of Acaulospore with colonization percentage of durianis 25,6%, kemiri is 43,86%, Karet is 49,6% and Asam Gelugur is 50,5%. Key word: FMA, durian, kemiri, asam gelugur, karet, arboretum
Pengaruh Pemberian Fungi Mikoriza Arbuskula (FMA) Terhadap Kandungan Logam Timbal (Pb) pada Tanaman Sengon (Paraserianthes falcataria) Juneith O S Nadeak; Delvian Delvian; Deni Elfiati
Peronema Forestry Science Journal Vol 4, No 3 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (424.002 KB)

Abstract

Plumbum (Pb) is an environmental contaminant that risk for human’s health, reducing soil fungtion and productivity and damage for plants. Therefore, remediation is need to do such as bioremediation using AMF and sengon as a host. A research was conducted to knowing the effect of the addition of AMF for Pb content on Sengon in green house of Agriculture USU. Analyze of Pb metal was done at Research Laboratory of Pharmacy USU on October 2014- February 2015 using faktorial completely randomize design with two faktors, i.e Pb addition (0 and 400 ppm) and doses of mycorrhiza inoculation (0, 25 and 50 g). Parameters measured were root colonization, plant height, stem diameter, root drying weight, crown drying weight, crown root ratio, root Pb content, crown Pb content and soil Pb content after harvest.The results showed that Pb addition affected significantly on plant height, Pb content on root, crown and soil after harvesting parameter. Inoculation of mycorrhiza affected significantly on plant height, stem diameter, drying weight of root and crown. Inoculation of mycorrhiza did not significant on Pb content but capable to increasing Pb content on root, crown and soil. The interaction of the two faktors did not affected significantly on all parameters. Key words: Sengon, Pb, AMF
PENGGUNAAN ASAM HUMIK DALAM KULTUR TRAPPING CENDAWAN MIKORIZA ARBUSKULA DARI EKOSISTEM DENGAN SALINITAS TINGGI Delvian Delvian
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 9, No 2 (2007)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.9.2.124-129

Abstract

It has been reported that humic acid can increase plant growth and benefecial soil microbe population.   A glasshouse experiment was conducted to study the effect of humic acid on growth of host plant and sporulation of arbuscular mycorrhizal fungi under salt stress in trap pot culture. Trap cultures were maintenance at various salinity levels as according to field salinity.  Half of the pots received 2.5% humic acid and control treatment received no humic acid. Result of research indicate that humic acid  can increase growth of host plant and mycorrhizae sporulation at all salinity levels. Acaulospora  is highest   its spore production   followed by of Glomus and Gigaspora .
Potensi Aliran Permukaan dan Sedimentasi pada Drainase Alami Permukiman Pengungsi Erupsi Gunung Sinabung di Siosar, Kabupaten Karo Nius Abdi Ginting; Rauf Rauf; Delvian Delvian
Jurnal Serambi Engineering Vol 7, No 1 (2022): Januari 2022
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v7i1.3925

Abstract

Transformation from forest ecosystem to be residential and farming ecosystems generally causes changes and damages due to open land surface and groundwater run off which can decrease organic substances in that area. The research employs a survey method by comparing Watershed with forest, part of forest, and part of settlement as land covering and settlement with topographic boundaries in order to estimate the potency of groundwater run off surface. Primary data are collected by measuring discharge in field and measuring the parameter of water quality. Secondary data are collected from geographical position, history of Siosar forest, digital RBI map, meteorological data, and population statistic data. The result of research shows that deforestation for settlement increases water discharge of surface runoff and sedimentation especially in the rainy season. The quality of water in the forest area is relatively good whereas the quality of water in settlement is slightly polluted.
Co-Authors Agree Hutami Sinaga Ariasta Bereona Tarigan Bejo Slamet Deni Elfiati Ichwana Ichwana Juneith O S Nadeak Nius Abdi Ginting R. Hamdani Harahap Rauf Rauf Ria Pertiwi Sianturi Sumono Sumono T Alief Aththorick Tengku Dianingrum Usnawiyah Usnawiyah, Usnawiyah Wahyu Fahreza Wika Astuti Sagala