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Pengaruh Pemberian Tanah Mineral Dan Aerasi Pada Tanah Gambut Yang Disawahkan Terhadap Pertumbuhan dan Produksi Tanaman Padi (Oryza sativa. L) David A Sibagariang; Wawan '; Husna Yetti
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Pertanian

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This study aims to determine the proper dose of minerals oil as a material amelioranton peat soil and aeration delivery on peat land planting medium to support the grow thand yield ofrice. The research was conducted at the Experimental Station of the Faculty of Agriculture, University of Riau in May until September 2012. This study conducted experiments using completely randomized design with 2 factor sand three replications. The first factoris the provision of minerals oil with 4levels: TM0=0g/pot, TM1=280g/pot, TM2=560g/pot, TM3=840g/pot. The second factoris Aeration with 2levels: with out aeration and A0=A1=Byproviding aeration. The result show that mineral and aerated soil factors significantly affected all parameters of observation. The interaction between the two treatments also significantly affected all parameters ofobservation. Key words: rice, peat, mineralsoil, aeration

IDENTIFIKASI MAKROFAUNA TANAH DI BAWAH TEGAKAN KELAPA SAWIT (Elaeis guineensis Jacq.) PADA LAHAN GAMBUT Miftahul Rahmi; Wardati '; Wawan '
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 2, No 1 (2015): Wisuda February 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Pertanian

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This research aims to identify the type and amount of soil macrofauna, calculate the population density (K) and the relative density (KR) of soil macrofauna with different water level on peat lands under oil palm stands. This research was carried out by observation, sampling for soil macrofauna data was determined by purposive random sampling method which selected the location in accordance with the purpose of research. The samples of the soil were taken in the circle, live path and die path of oil palm with the total area 1 m x 1 m in the soil depth until 15 cm which were repeated 3 times to obtain 18 samples. The data of research were calculated and presented on table, then these data were analyzed by descriptive statistic. These results indicated that the type and amount of soil macrofauna on the circle, live path and die path of oil palm in water level of 43 cm were higher than at 60 cm below in the water soil. The population density (K) and the relative density (KR) of soil macrofauna on the circle, live path and die path oil plam at the water level 43 cm below the soil surface had various types and higher amount than at the level 60 cm. Keywords : Soil macrofauna, oil plam, peat lands

PENGARUH TINGGI MUKA AIR TANAH DAN PEMUPUKAN TERHADAP POPULASI DAN JENIS FUNGI PADA TANAH GAMBUT DENGAN SERASAH DAUN AKASIA (Acacia crassicarpa) Tiara Athahirah; Wawan '; Fifi Puspita
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 2, No 1 (2015): Wisuda February 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Pertanian

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Riau has the peatland appreciable to be used in the development of agriculture, plantation and development of Industrial Plantation Forest (HTI). One of the plants HTI is a widely developed Acacia crassicarpa. Function of Acacia crassicarpa are as raw material then produce organic matter. This study aims to determine the effect of water level and fertilization on populations and species of fungi in peatland with litter of acacia (Acacia crassicarpa). This research was conducted in the Screen House, Laboratory of Plant Agriculture Faculty, University of Riau and Plant Protection Unit Office of Food Crops and Horticulture Riau Province, from July to November 2013. The research was conducted experimentally using completely randomized design (CRD) non-factorial with 6 treatments and 3 replications. The data obtained were analyzed statistically using analysis of variance with Duncan's New Multiple Range Test (DNMRT) at 5% level. Parameters observed were total fungi and types of fungi (macroscopic and microscopic observations). The results showed that the water level without fertilization affect on total fungi tested. The highest of Total fungi achieved in the treatment of water level without fertilization 30 cm. Treatment of water level with or without fertilizer N, P, K does not affect the type of fungi that exist are Trichoderma sp and Mucor sp, except in water level of 60 cm with N, P, K is Penicillium sp. Based on the identification of characteristic morfologis found 3 Acacia crassicarpa types of fungi namely: Trichoderma sp, Mucor sp and Penicillium sp. Fungi were found in leaf litter Acacia crassicarpa dominated by Trichoderma sp and Mucor sp on all treatments water levels. Keywords : : water level, fertilization, litter of acacia and fungi

PENGARUH KEDALAMAN MUKA AIR TANAH DAN BAHAN ORGANIK TERHADAP KETERSEDIAAN HARA DAN PERTUMBUHAN TANAMAN KELAPA SAWIT (Elaeis guineensis Jacq)DI LAHAN GAMBUT Romadoni Sahputra; Wawan '; Edison Anom
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 3, No 1 (2016): Wisuda Februari 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Pertanian

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This studyaims to determinethe effect ofthe depth ofthe ground water leveland thesoilorganic matterand obtainthe combination ofthe depth ofthe ground water levelto the type oforganic matterthat isbestfornutrient availabilityandgrowthof oil palm plantationson peatlands. This research was conductedusing Split PlotDesign, the mainplotisthe depth ofthe water tableandthe subplotis thetreatment oforganic matter. Researchshowsthat thedepth ofthe ground water levelpeatsignificantly affectthe availability of nutrientsammonium(NH4+), nitrate (NO3-), P-available, an increasethat occurred ineachparameterwere observed,treatmentis bestfoundat a depth ofground water level60-70cmcomparedto thedepth ofthe ground water level40 - 50cmand80 - 90cm. Organic matterin thesoilpeatsignificant effect onthe increasein thepH ofthe soil, ammonium(NH4+), the P-available, K-available, the lengthmidrib, the length ofthe childleaves,increasethe width of theleaf, root volumeand weight ofthe roots ofthe plantoil palmeachsignificantly differenttreatmentwithoutorganic matter. TKKSorganic matterproducesthe highest increasecompared toother organic materials. Combination ofgroundwater level60 - 70cmwithorganic materialsTKKSresult in increasedavailability of nutrientsnitrate (NO3-), P-available heavyoil palmplant roots. Keywords: High Watersurfacesoil, nutrient availability, plant growth

KEANEKARAGAMA MORFOLOGIS TANAMAN SAGU (Metroxylon SP.) DI KABUPATEN LINGGA PROPINSI KEPULAUAN RIAU Kholik Al Qodri ZD; Wawan '
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 2, No 2 (2015): Wisuda Oktober 2015
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A research of morphological diversity of sago palm (Metroxylon sp) has been implemented in three District in the Riau Island Province, District of Lingga that District North Lingga and the District of East Lingga. The research was conducted from February to May 2015 with the aim of knowing the morphological diversity, distribution and sago population in Lingga regency of Riau Islands Province. The research used survey methods with an intentional sampling technique (purposive sampling) accordance with the criteria in 11 villages. Observations or data collected was primary data form and secondary data form. Primary data were obtained through interviews with sago farmers and measure directly to plant morphology in field. Secondary data were obtained from BAPPEDA (Badan Perencanaan dan Pembangunan Daerah), BPS (Badan Pusat Statistik) and the Department of Agriculture, Plantation, Forestry and Veterinary Office of Lingga Riau Islands Province. The research indacated that there are two types of sago discovered in the Lingga District of Riau Islands Province that Tuni / Runggamanu (Metroxylon Rumphii Martius) and Molat / Roe (Metroxylon Sagus Rottbol). Keywords: Identification, Morphological diversity, Sago

PENGARUH PEMADATANTANAH GAMBUT TERHADAP SIFAT FISIK PADA DUA LOKASI YANG BERBEDA Sandi Perdana; Wawan '
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 2, No 2 (2015): Wisuda Oktober 2015
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This research aims to find out the effect of compaction of peatland on the physical propertiesat the two different locations. The research was conducted in October- December 2014 at society’s peatland in LubukOgong, Langgam, Pelalawan, Riau. The research used Factorial Split Plot Design (SPD) that consisting 2 factors and 3 replications. Factor I: compaction Level A1, A2, A3, and Factor II: the difference of Location B1 and B2 (Location 1 and Location 2). Parameters were observed those physical characteristics of soil included bulk density, particle density, total pore space, permeability, soil penetration, and water content. The data were analyzed by anova and the means were testedwithLSDsignificant level 5%. The result shows that the increasing of compaction of the peatland produces the increasing of bulk density and the decreasing of total pore space up to the soil deep 15-20 cm. Whereas the analysis result of the water content and particle density shows nonsignificant. The increasing of compaction is also reducing the permeability rate and increasing the value of soil penetration. Keywords: Compaction, Peatland, Physical Characteristics.

Sifat Kimia Ultisol di Bawah Tegakan Berbagai Umur Tanaman Kelapa Sawit (Elaeis guineensis jacq.) Dedi Hayadi; Wawan '; Al Ikhsan Amri
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
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The purpose of this research is to determine the chemical properties of Ultisol under the oil palm stands of different ages between on the oil palm circle, life path and die path with different depths. This research was conducted by survey method. The sample collection is done by purposive sampling. The results of the research showed that the increasing age of the oil palm plantations has increased Ultisol chemical properties. The chemical properties of Ultisol under the stand of oil palm age of 18 years is the highest compared to the age of 8 and 15 years. pH and higher organic-C in the die path than in the circle , and the disc is higher than in life path. Total-N, available P, exchangeable bases, CEC, and base saturation is higher in the oil palm circle than in die path, and some chemical properties of Ultisol in die path is higher than in life path. In general, the chemical properties of Ultisol at a depth of 0-20 cm have a higher value than the depth of 20-40 cm. Keywords: Chemical Properties of The Soil, Ultisol, Oil palm

PERUBAHAN SIFAT FISIK GAMBUT AKIBAT KEBAKARAN DI DESA TELUK BINJAI KECAMATAN TELUK MERANTI KABUPATEN PELALAWAN Muhamad Tahrun; Wawan '; Al Ikhsan Amri
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 2, No 1 (2015): Wisuda February 2015
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This research is conducted to compare the physical characteristic change between burnt & unburnt peat soil and also to understand its change on both seven days & four months after burn. This research is held in “Teluk Binjai Village, District ofTeluk Meranti, Regency ofPelalawan” and its physical analysis is held at Soil Science Lab of Riau University Agricultural Faculty on January until June 2014. Moreover, it uses survey method to determine its location and purposive sampling for sampling method. Both peat soil sampling & field observation are done twice. First sampling is conducted on seven days after burn and the second sampling is done four months later (after burn). Its data analyzed by using descriptive statistic and presented on tables & graphs. In addition, the observed parameters are Particle Size Distribution (PSD), water holding-capacity, Bulk Density (BD), Particle Density (PD), porosity and permeability. The results show that fire on peat land causes physical characteristic change on peat soil with the sign of decreasing on water holding-capacity, porosity and permeability. Meanwhile, both Bulk Density (BD) and Particle Density (PD) are increasing on the burnt rather than the unburnt one. Physical characteristic change of peat soil from seven days until four months after burn causes re-increasing on water holding-capacity, porosity and permeability at the depth of 10-20 cm. Moreover, there are increasing on fine particle size (88 µm and 106 µm) at the depth of 10-30 cm and increasing on both Bulk Density (BD) & Particle Density (PD) at the depth of 20-25 cm. Keywords: Fire, Physical Characteristic, Peat Soil

PENGARUH TANAH MINERAL DAN ABU JANJANG KELAPA SAWIT PADA MEDIUM GAMBUT TERHADAP PERTUMBUHAN BIBIT KELAPA SAWIT (Elaeis guineensis Jacq.) DI PEMBIBITAN UTAMA Suprianto '; Wawan '; Fetmi Silvina
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 3, No 1 (2016): Wisuda Februari 2016
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The research aimed to determine the effect of mineral soil and oil palm bunch ash on peat medium on the growth of oil palm seedling (Elaeis guineensis Jacq.) in main nursery. The research was conducted from April to August 2015. This research is a 4 x 4 factorial experiment arranged in a completely randomized design (CRD). The first factor is effect mineral soil consist of four levels: 0, 50, 75 and 100 g/5,6 kg peat soil. The second factor is effect oil palm bunch ash consist of four levels: 0, 25, 50 and 75 g/5,6 kg peat soil, thus there are 16 combinations of treatment is repeated three times, so there are 48 experimental units. Data were analyzed using ANOVA and continued with further test Duncan’s New Multiple Range Test (DNMRT) at 5%. The results showed that the combination of mineral soil 10 ton/ha with oil palm bunch ash 15 ton/ha increase height and seedling dry weight. Giving oil palm bunch ash increase hight and tends to increase the volume of roots, dry weight and ratio root crown. Giving mineral soil up to 15 ton/ha tends to increase the volume of roots, dry weight and ratio root crown. Keywords: Mineral soil, peat soil, oil palm bunch ash, main nursery

PENGARUH KEDALAMAN MUKA AIR TANAH DAN MULSA ORGANIK TERHADAP EMISI CO2 PADA TANAMAN KELAPA SAWIT (Elaeis guineensis Jacq.) DI LAHAN GAMBUT Pernando Nababan; Wawan '; Al Ikhsan Amri
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 2, No 2 (2015): Wisuda Oktober 2015
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This research aims to determine the effect of water level and organic mulch on CO2 emissions of oil palm in peatland. Research was conducted at the oil palm plantation of PT. Teguh Karsa Wana Lestari (TKWL) in Buantan Besar village, Bungaraya, Siak District, from October 2014 to February 2015. This research used Split Plot Design, consist of 2 factors. The first factor is the groundwater surface depth as main plot, were: water level depth 50 cm, 70 cm dan 90 cm. The second factor is application organic mulch as sub plot, were: without giving organic mulch, giving palm oil empty fruit bunch (POEFB), palm frond and Mucuna bracteata. Therefore obtained 12 combinations of treatments and 3 replications, so obtained 36 units experiment. Parameters observed were the CO2 emmisions, soil temperature and soil water content. Data were analyzed using Analysis of Variance (ANOVA). The data obtained were further tested by Least Significant Diference (LSD) at 5 % level. Based on the result it can be concluded that is not significantly effect on CO2 emissions. The water level and organic mulch affected on soil temperature and soil water content. The results of linear correlation analysis showed the depth of groundwater surface factors, organic mulch and soil temperature affected CO2 emissions rate. Soil water content was not significantly affect on CO2 emissions rate, it shows by the low of correlation coefficient (r). Keywords : CO2 emissions, water level, organic mulch

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