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INDONESIA
Jurnal Online Mahasiswa (JOM) Bidang Pertanian
Published by Universitas Riau
ISSN : -     EISSN : -     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Arjuna Subject : -
Articles 1,854 Documents
 94   95   96   97   98 
PENDUGAAN CADANGAN KARBON DI ATAS PERMUKAAN TANAH PADA KAWASAN TATA HIJAU PENYAMBUT TAMAN HUTAN RAYA (TAHURA) SULTAN SYARIF HASYIM PROVINSI RIAU Saputra, Donald; Sulaeman, Rudianda; M. Mardhiansyah, M. Mardhiansyah
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Pertanian

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Abstract

Forests are natural resource that provides great benefits for human welfare, both tangiblele and intangible benefits. The tangible benefits such as timber and non-timber forest products. Moreover, the intangible benefits such as recreational areas, protection and regulatory systems, micro climate regulators, erosion preventer and as carbon storage. Therefore, this research is aimedto determine the potential of carbon stocks above the surface of the soil one of the areas in Taman Hutan Raya (Tahura) Sultan Syarif Hasyim called Kawasan Tata Hijau Penyambut, Riau Province. Approximately 65.05 Ha, with a sampling intensity value of 3%. Plot determination and data retrieval has done by random sampling which research sampling method giving equal opportunity to be taken in every element of population or region. The collected data includes initial weight value, sample weight and dry weight at litter, seedling and under plant level. At the stake, pole and tree level, the collected data are local names, scientific names and diameter values of stands. The data was processed to calculate the value of the content of the biomass by summing the biomass at the level of stakes, poles and trees by using the equation of allometrik and biomass at a rate of litter, seedlings and lower plants using the formula from Indonesian National Standard. Based on the research that has been done, the potential of carbon content in Kawasan Tata Hijau was 136,28 ton/ha or 8.865 ton if extrapolated to the total area of the whole area.Keywords: Forest, Taman Hutan Raya, Biomass, Carbon
POTENSI EKSTRAK KULIT BUAH JENGKOL (Pithecellobium lobatum Benth.) SEBAGAI TERMITISIDA NABATI PADA KAYU PULAI (Alstonia scholaris L.) Affandi, Zul; Sulaeman, Rudianda; Budiani, Evi Sri
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
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Abstract

Pulai(Alstonia scholaris L.) wood widely used because it’s easy to obtained and demand is quite high. Pulai wood included in durable class V and strong class IV-V, so easily attacked by termite (wood destructive organisms). To prevent and reduce the impact of termite attack, we can utilize natural materials as basic materials botanical termiticide. Materials derived from plants are guaranteed environmentally friendly, because it’s quickly decomposes on ground and does not harm the non-target. One of the potential is jengkol (Pithecellobium lobatum Benth.) fruit skin. This research aimed to know about the effectiveness and potential of jengkol fruit skin extract as botanical termiticide  to controlling termite (Coptotermes curvignathus Holmgren.) attack at pulai wood. This research used Completely Random Design method wich consists of 4 treatments and 3 replicates with concentration levels of extract, T0 = 0 g/l of water (0%); T1 = 21 g/l of water (2%); T2 = 42 g/l of water (4%); T3 = 64 g/l of water (6%). The results showed that the application jengkol fruit skin extract at the concentration 4% and 6% is the best treatment to controlling termite, with total mortality amounted to 100%. The value of retention meets National Standards ofIndonesia amounted to 8,58kg/m3 (interior) 4% treatment and 12,35 kg/m3 (exterior) 6% treatment. Both of it also, able to improve the resilience of pulai wood into class II with termite consumption levels lower than control treatment. Jengkol fruit skin extract is effective and has potential as base material botanical termiticide. Keywords: Pithecellobium lobatum Benth., Alstonia scholaris L., Coptotermes curvignathus Holmgren., Botanical Termiticide
APLIKASI HIJAUAN DAN KOMPOS Mucuna bracteata PADA TANAMAN SAWI HIJAU (Brassica juncea L.) Ririn Safitry; Hapsoh Hapsoh
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
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Abstract

This study was conducted to determine the effect of forage and Mucuna bracteata compost on increasing production of green mustard plant (Brassica juncea L.). This research has been conducted in the experimental garden of Faculty of Agriculture, University of Riau, Jalan Bina Widya, Baru Simpang Village, District Tampan, Pekanbaru. This research was carried out for 2 months from the month of June-July 2016. The study was conducted experimentally using a completely randomized design (CRD), which consists of 5 treatments and 4 replications. The treatments used are as follows: 0 ton / ha, 5 ton / ha forage, 10 tons / ha of forage, 5 ton / ha of compost, 10 tons / ha of compost. The parameters observed, plant height, leaf number, root volume, root fresh weight, fresh weight canopy, canopy ratio roots. Forage Mucuna bracteata tends to increase the average value of the observations of mustard greens, but not increase production of mustard greens. Compost Mucuna bracteata able to increase crop production green cabbage all parameters of observation. Dose Mucuna bracteata best compost 10 tons / ha which enhances growth of green cabbage (Brassica juncea L.) Yield of 1.81 kg per plot equivalent to 12.56 tonnes / ha (34.47%), compared with no treatment. Keywords: hijauan, kompos, Mucuna bracteata, sawi hijau.
PENGARUH SAAT APLIKASI PUPUK NITROGEN TERHADAP PERTUMBUHAN DAN PRODUKSI TIGA VARIETAS KEDELAI (Glycine max.L.Merril) Agus Santi; Aslim Rasyad; Arnis En Yulia
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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The objective of this research was to determine suitable nitrogen application time on several soybean varieties. This research was conducted in the agricultural experimental unit, Agriculture Faculty, Riau University. The study was arranged in randomized block design in which three soybean varieties ie, Grobogan, Argomulyo and Kaba were grown and fertilized with four application methods. The methods of application were no N fertilizer as control, 25 kg N applied atplanting date, 25 kg N applied at 35 days after planting, and 25 kg N applied atplanting  followed 25 kg N at 35 days after planting. Every tretment combination was repeated three times. Traits measured were plant height, number of main branches, plant biomass at 28 and 35 days after planting, crop groth rate, leaf area index, flowering date, harvesting date, number of filled pods, seed weight per plant, grain yield per m2, and harvest index. The data were then analysed by analyses of variance followed by least  significant difference at 5%.  There were differences among varieties on all characters observed except for plant biomass at 28 days after planting and harvest index. Application of N fertilizer with a rate of 25 kg per ha at planting and followed by the same rate at 35 days after planting in all varieties resulted faster flowering date, earlier harvest date, more filled pods, greater seed weight per plant and higher grain yield compare to other application time.Keywords : time of nitrogen fertilizer, plant growth rate, yield components
PEMANFAATAN LIMBAH CAIR TAHU UNTUK PERTUMBUHAN DAN PRODUKSI TANAMAN PAKCOY ( Brassica rapa L.) Ahmad Al Amin; Arnis En Yulia; Nurbaiti Nurbaiti
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
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The research was aimed to determine the use of tofu liquid waste to growth and production of pakcoy (Brassica rapa L.) This research has been conducted in the experimental garden of Faculty of Agriculture, University of Riau, Jalan Bina Widya, Baru Simpang Village, District Tampan, Pekanbaru. This research was carried out for 2 months from the month of April - Mei 2017. The study was conducted experimentally using a completely randomized design (CRD) consisting of one Factor that concentration of tofu liquid waste with 5 treatments and 4 replications. The treatments used are as follows: 0%, 12,5%, 25%, 37,5% and 50%. The parameters observed, plant height, leaf number, leaf area, plant fresh weight and fresh weight of plants suitable for consumption. The results showed that given of some tofu liquid waste influencing pakcoy on all parameters, and given of 25% is the most effective concentrations for the growth and production of pakcoy. Keywords: pakcoy, growth and production, tofu liquid waste
PENGARUH KONSENTRASI MUTAGEN SODIUM AZIDA (NaN3) TERHADAP DAYA KECAMBAH DAN KERAGAAN BIBIT PADI GOGO VARIETAS KULIT MANIS GENERASI M-1 Endang Sri R; Tengku Nurhidayah; Muhammad Ali
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
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This experiment aims to observe the effect of mutagen concentration of sodium azide to the germination and seedling growth performance of upland rice varieties Kulit Manis generation M-1 and the difference in seedling growth of upland rice varieties in Kulit Manis on the generation M-1 by application Sodium Azide some mutagen concentration. The experiment was conducted in an area behind the of Soil Laboratory, Faculty of Agriculture, University of Riau, from May to July 2015. Research was arranged experimentally using Completely Randomized Design, which consists of 5 treatments concentration of sodium azide (SA), ie (0.0, 0.5, 1.0, 1.5 and 2.0 mM). The mean deviation between treatments tested by Duncan New Multiple Range Test (DNMRT) at the level of 5%. Parameters observed were the first count test, the soil emergence test and the percentage of life seedlings. The result showed that the concentration of Sodium Azide significantly effected on the first count test, the soil emergence test and life seedling percentage. Sodium Azide at the concentration of 2.0 mM produce the first count test, the soil emergence test and the lowest percentage of life seedling.Keywords:Upland rice, Sodium azide, Concentration
KAJIAN TINDAKAN KONSERVASI LAHAN DAN PEMUPUKAN SERTA PENGARUHNYA TERHADAP PRODUKSI KOPI ROBUSTA (coffea canephora) DI KECAMATAN SILIMA PUNGGA-PUNGGA, KABUPATEN DAIRI, SUMATERA UTARA Ardianta Ginting; Syafrinal Syafrinal; Al Ikhsan Amri
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
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Abstract

This research aims to study the effect of conservation technique and fertilised which was done by the farmer to coffee production. This research was conducted at Silima Pungga-pungga, Dairi, North Sumatera. This research was done In February-March 2017. This research was conducted with Survey Method by taking some farmers as research sample. Sample was taken by used Purposive Sampling Method on level 5%. Sample criteration is the farmer in slope farmland (0-8)%, (9-16)% and (17-25)% with total sample 90. This research also used primary and secondary data which are taken by interview technique with the questionnaire and observation technique were direct field. Based on the result of the research was conducted at Silima Pungga-pungga, the researcher can conclude that the conservation technique and fertilised which were done by farmer show the significant effect to the coffee production itself on farmland slope (0-8)% and (9-16)% farmland slope while on farmland slope (17-25)% conservation technique and fertilised didn’t show the significant effect to the coffee production itself. Based on regression analysis can be gotten regression similarityfor the farmland slope (0-8)% is Y=0,286+0,097X1+0,578X2, (9-16)% is Y=1,961+0,177X1+0,439X2, (17-25)% is Y=1,403+0,020X1+0,213X2, it means that conservation technique and fertilised have positif value in every farmland slope.Keywords: Robusta Coffee, Conservation technique, Fertilised.
BIOETANOL DARI NIRA NIPAH KENTAL SECARA NIR-SINAMBUNG (BATCH) DENGAN PENAMBAHAN Cordyceps mycelium POWDER DAN UREA Sadzvirani, Sastiana; Restuhadi, Fajar; Rossi2, Evy
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
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This research implemented to see the effect of combined treatment of urea and Cordyceps mycelium powder contain ergosterol with bioethanol fermentation from very high gravity Nypa sap in batch fermentation. This research implemented in an experimental method with two factors. The first factor is the levels of the source N as urea consist of four levels namely (U) (0.0; 0.2; 0.4; 0.6) gr/l and the second factor is the levels of the Cordyceps mycelium powder consist of three levels namely (C) (0.0; 0.5; 1.0) gr/l, so that obtained twelve combination of treatments without repetition. Analysis implemented every day including : levels of ethanol, levels of reduce sugar content, the number of microbial cells Saccharomyces cerevisiae and the degree of acidity (pH). Data were analyzed descriptively by use tabulations and charts. The best combination treatment was U4C2 (urea 0.6 gr/l and Cordyceps myceliumpowder 0.5 gr/l) which produced ethanol 31.5%. Keywords: Very high gravity nypa sap, Urea, Cordyceps mycelium powder, Bioethanol
AKTIVITAS ANTIMIKROBA Lactobacillus plantarum 1 YANG DIISOLASI DARI INDUSTRI PENGOLAHAN PATI SAGU TERHADAP BAKTERI PATOGEN Escherichia coli FNCC-19 DAN Staphylococcus aureus FNCC-15 Noni Afriani; Yusmarini Yusmarini; Usman Pato
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
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The purpose of this study was todetermined and measure the antimicrobial activity of Lactobacillus plantarum 1 isolated from sago starch processing industry against pathogenic bacteria Escherichia coli FNCC-15 and Staphylococcus aureusFNCC-19. The research was carried out experimentally  using Completely RandomizedDesign (CRD) with four as treatments and four replications. Antimicrobial activity was tested using the well diffusion method and the paper disc diffusion method. Result of analysis of variance showed that the antimicrobial activity of lactic acid bacteria isolates and cell-free supernatant of bacteriaStaphylococcus aureus FNCC-15 and Escherichia coli FNCC-19 were significantly different (P<0.05%).  T test result showed that the inhibition zone produced acid between bacteria isolates to cell-free supernatant were significantly different (P<0.05%).The average diameter inhibition zone of lactic acid bacteria isolated againstStaphylococcus aureus FNCC-15 were from 6.10 to 8.08 mm. The average diameter inhibition zone of lactic acid bacteria isolated againstEscherichia coli FNCC-19 were from 6.80 to 9.20 mm. The average diameter cell-free supernatant inhibition zone against bacteria Staphylococcus aureus FNCC-15 were from 1.22 to 2.41 mm and inhibition cell-free supernatant against Escherichia coli FNCC-19 ranged from 2.06 to 3.50 mm. The results of this study indicate that the isolates of Lactobacillus plantarum 1 RN2-12112 and the supernatant had greater antimicrobial activity than isolates of Lactobacillus plantarum 1RN2-53. Keywords: Lactic acid, Antimicrobials, Lactobacillus plantarum 1,Supernatant
PENDUGAAN EMISI KARBONDIOKSIDA (CO2) PERMUKAAN TANAH DI HUTAN LARANGAN ADAT KENEGERIAN RUMBIO KECAMATAN KAMPAR KABUPATEN KAMPAR Adi Saputra; Rudianda Sulaeman; Defri Yoza
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
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Abstract

The forestry sector in Indonesia is one of the main sources of greenhouse gases (GHG), given the extensive forests owned Indonesia is one of the largest in the world, along with the high rate of deforestation, forest degradation and degraded land. Forests as one ecosystem dominated by trees vegetation, has the ability to absorb carbondioxide (CO2) from the air and carbon stock in the form of biomass. Indigenous forest Prohibition in the villages Rumbio, Pulau Sarak, Padang Mutung and Koto Tibun is one form of local wisdom that have been implemented long ago by societyof  indigenous forest prohibition Kenegerian Rumbio with the aim of maintaining the existence of the forest. This study aimed to quantify the potential emissions of carbondioxide (CO2) in the area of indigenous forests prohibition Kenegerian Rumbio. Potential emissions of CO2 in the soil surface at indigenous forests prohibition Kenegerian Rumbiois 1824.15 t/ha/yr. Overall potential emissionsof CO2in the soil surfaceat indigenous forests prohibition Kenegerian Rumbio is 966,799.5 t/y. Sparse vegetation density of CO2 emissions from the soil surface was higher (125.48 t/ha/yr) then moderate vegetation (84.50 t/ha/yr) and dense vegetation (61.10 t/ha/yr). Differences related CO2 emissions released by the micro-climate conditions such as air temperature and soil temperature, as well as the rate of CO2 emissions from the soil surface in each type of vegetation density.Keywords:  Emissions, Carbondioxside (CO2), Rumbio, Kampar

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