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Gunawan Tabrani
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PERTUMBUHAN BIBIT KELAPA SAWIT (Elaeis guineensis Jacq) PADA KONDISI HIPOKSIA YANG DIBERI PUPUK DAUN DAN ZAT PENGATUR TUMBUH Sari, Muspika Sari; Tabrani, Gunawan
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
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The aims of this research is to improve the growth of seedlingspalm oil (Elaeis guineensis Jacq.) under hypoxia by applying foliar fertilizers and growth regulators. This research was conducted at experimental field of the Faculty of Agriculture, Universitas Riau from July to November 2019. The study was conducted with a split plot design in simple pattern in three replication. The main plots were foliar fertilizer kind (D), consisting of: d1 = organic liquid foliar fertilizer, d2 = inorganic granular foliar fertilizer, and d3 = inorganic liquid foliar fertilizer. The subplots were growth regulators kind (Z), which consisted: z1 = auxin, z2 = cytokinin, and z3 = gibberellins. The variable observed were: seedling height, number of leaf midribs, tuber diameter, root shoot ratio, seedling dry weight, and seedling quality index. The data analyzed of variance, and continued by orthogonal contrast test at 5%. The results showed, no interaction between foliar fertilizers and growth regulators on all growth components of oil palm seedling in hypoxia, but foliar fertilizer affects to the dry weight of the seeds and the seed quality index, which the inorganic foliar fertilizer does increased the seedling dry weight, and seedling quality index. Keywords: Palm oil seedlings, hypoxia, leaf fertilizer and growth regulators.
PENGUJIAN PUPUK DAUN DENGAN GIBERELIN PADA BIBIT KELAPA SAWIT (Elaeis guineensis Jacq.) YANG MENGALAMI GENANGAN AIR Qurrata A’yun; Nurbaiti Nurbaiti; Gunawan Tabrani
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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This research aims to improve the growth of oil palm seedlings (Elaeis guineensis Jacq.) Which are continuous puddles for 30 days by planting together with giberelin growth regulators. The study was conducted in the Riau Faculty's lithology garden from August to December 2017, in the form of plot design experiments divided by random patterns repeated three times. Main plot: leaf fertilizer concentration (D), consisting of d0: without leaf fertilizer (0 ppm), d1: 1,500 ppm, d2: 3,000 ppm. Subplots in the form of gibberellin concentration (G), consisting of g0: without giberelin (0 ppm), g1: 15,000 ppm, g2: 30,000 ppm. The parameters observed were plant height, number of leaf midribs, tuber diameter, number of adventitious roots, root volume, root canopy ratio, seed dry weight and seed quality index. The results showed that there was no interaction between leaf fertilizer concentration and gibberellin concentration on the growth component of oil palm seedlings which were harvested for 30 days continuously by air inundation. The height of the oil palm seedlings which ignite the inundation continuously for 30 days can be increased as high as 7.47 cm with the administration of giberellin, but cannot improve on other growth components. The application of leaf fertilizer cannot be used to repair oil palm growth with 30 days of inundation, even increasing seed dry weight 47.40 g. Palm oil seedlings that are prolonged stressed inundation, initiate adventitious plant formation. Keywords: Palm oil seedlings, waterlogging stress, foliar fertilizer and gibberellin. 
Pertumbuhan dan Produksi Berbagai Varietas Bawang Merah (Allium AscalonicumL.) Asal Bijiyang Ditanam dengan Jarak Tanam Berbeda Nurrahmi Yulfia; Gunawan Tabrani; Irfandri Irfandri
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
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This study aims to produce varieties of shallots (Allium ascalonicum L.) from seeds with better growth and production by adjusting the spacing. The research was conducted at the experimental garden of the Faculty of Agriculture, Riau University, Pekanbaru from May to October 2019, in a factorial completely randomized experimental design in three replications. The first factor is the variety (V), namely: v1 = Sanren, v2 = Lokananta, and v3 = Tuk Tuk. The second factor, the spacing plant (J) was: j1 = 10 cm x 10 cm, j2 = 10 cm x 15 cm, and j3 = 10 cm x 20 cm. The variables observed were plant height, number of leaves per tuber and per clump, leaf length, number of tubers per clump, tuber size, fresh weight and dry weight of tubers per plot. The research data were analyzed ofvariance and followed by orthogonal contrast test at 5% level. The results showed that the interaction between varieties and spacing plant was seen in: number of leaves per tuber and per clump. The number of tubers per hill, tuber diameter, fresh and dry weight of tubers per plot were affected by the variety. The number of tubers per hill and tuber diameter are also affected by spacing plant. Shallots of the Sanren variety increased, if planted at loose spacing, but the production was higher in the Tuk Tuk variety or when planted with more spacing. Keywords: True Shallot Seed, variety, plant spacing 
Peningkatan Kesuburan Tanah Gambut Melalui Pemberian Dolomit dan Penanaman Tanaman Penutup Tanah Mucuna bracteata Nanda Intan Habibah; Wawan Wawan; Gunawan Tabrani
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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Theresearch aims to improve the peat soilfertility (chemical and physical soil properties) through the giving of dolomite and planting of legume cover cropMucuna bracteata. Theresearch was conducted at Kualu Nanas Village, Tambang, Kampar, Riau from September 2017 to February 2018. The researchused Split Plots Design with a basic pattern of Completely Randomized Design. The main plot is Mucuna bracteatawhich consists of 2 levels, without and using a cover crop of Mucuna bracteata. The subplot is the dosesof dolomite fertilizer consisting of 4 levels, namely, 0.0ton.ha-1, 0.5ton.ha-1, 1.0ton.ha-1, 1.5ton.ha-1 The observedparameters were soil water content, water holding capacity, pH soil, soil organic carbon, N-total soil,P-total soil, K-total soil, cation exchange capacity (CEC), exchangeable base, base saturation, LCC M. bracteata biomass, the total of LCCM. bracteata root nodules, the total of LCC M. bracteataeffective root nodules and the tendrils lengthof LCC M. bracteata. The results showed that the planting of LCC M. bracteata increasing the saturation of peat soil bases by 299.12% if the dolomite doses was increased from 0.5 ton.ha-1 to 1.0 ton.ha-1 and 1.5 ton.ha-1. The planting of LCC M. bracteata and thegiving of dolomite can increase the fertility of peat soils such as pH, N-total, exchangeable bases, CEC and base saturation. Keywords : soil fertility, peat, dolomite, Mucuna bracteata.
PERBAIKAN PERTUMBUHAN BIBIT KELAPA SAWIT YANG MENGALAMI CEKAMAN GENANGAN AIR SECARA PERIODIK DENGAN PEMBERIAN PUPUK DAUN DAN GIBERELIN Fajar Nopendri; Nurbaiti Nurbaiti; Gunawan Tabrani
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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The present study aims to improve the growth of palm oil seedling periodically covered with puddle by giving foliar fertilizer and gibberellin. The research was experimentally conducted at an experimental garden of Faculty of Agriculture, Riau University, Pekanbaru from August until December 2017 using completely random split plot design under 3 replications. The main plot is foliar fertilizer concentration (D) consisting of d0 = non foliar fertilized (0 ppm), d1 = foliar fertilized 1,500 ppm, d2 = foliar fertilized 3,000 ppm and the sub plot was gibberellin concentration (G) consisting of g0 = no gibberellin (0 ppm), g1 = gibberellin 15,000 ppm, g2 = gibberellin 30,000 ppm. The observed consists of: seedling height, total leaf midribs, bar diameter, total adventive roots, roots volume, shoot root ratio, dry seedling weight and seedling quality index. The data were analyzed using analysis of variance and orthogonal contrast tests at a level of 5%. The results that dry weight and quality index of palm oil seedling which are periodically covered with puddle are affected by an interaction between foliar fertilizer and gibberellin, while height seedling and dry seedling weight are affected by gibberellin concentration. The height of palm oil seedling which are periodically covered with puddle can be improved use by gibberellin. The weight of dry seedling can be improved through giving foliar fertilizers with gibberellin, provided that the concentrated are both equal. The improvement of seedling quality index with foliar fertilizer is determined by the gibberellin concentration given. Keywords: Palm oil seedling, periodic coverage of the puddle, foliar fertilizer and gibberellin
PERTUMBUHAN BIBIT KELAPA SAWIT (Elaeis guineensis Jacq.) PADA MEDIUM GAMBUT YANG TERGENANG SECARA PERIODIK YANG DIPUPUK DENGAN PUPUK PELENGKAP CAIR DENGAN FREKWENSI YANG BERBEDA PADA SAAT BIBIT TIDAK TERGENANG Riki Noviantoni; Gunawan Tabrani; Nurbaiti '
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 2, No 2 (2015): Wisuda Oktober 2015
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This study aims to determine the effect of giving PPC interaction with different frequencies when not flooded in the medium periodically flooded peat on the growth of seedlings of oil palm (Elaeis guineensis Jacq.). This research has been carried on in the greenhouse UPT Faculty of Agriculture, University of Riau, Pekanbaru, from November 2013 to February 2014. This study used a completely randomized factorial design consisting of two factors and three replications. The first factor is the concentration of PPC consists of 4 levels K0: no PPC, K1: 0.2%, K2: 0.4%, K3: 0.6% and the second factor spraying frequency F1 PPC Consist 3 levels: 1 times, F2: 2 times, F3: 3 times. Parameters those observed: change of plant height, increase the number of leaves, stem diameter, length of the primary root, root number, root volume, the ratio of the shoot root ratio. The data mean separation use DMRT at %. The results show that there is interaction between the concentration and frequency of PPC spraying were the parameters plant height, primary root length, shoot root ratio. A PPC concentration of 0.4% and 0.6% to add 3.17 to 3.78 of the leaves, concentrations of 0.4% and 0.6% to add 9.05 cm to 9.40 cm in diameter rod, concentrations of 0, 4% and 0.6% to add 15.22 to 16.55 strands strands, number of primary roots, a PPC concentration of 0.2% to 0.6% shows the root volume amounted to 95.22 ml to 98.88 ml.   Keywords: oil palm, flooding, complementary liquid fertilizer and peat
PENGUJIAN BEBERAPA KONSENTRASI PACLOBUTRAZOL DENGAN WAKTU APLIKASI BERBEDA PADA TANAMAN TOMAT (Lycopersicum esculentum Mill.) Indra Saputra; Nurbaiti Nurbaiti; Gunawan Tabrani
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
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The aim of this study to improve tomato production by granting several concentrations of paclobutrazol and its application on differents time. This study was used a completely randomized factorial design 4 x 2 in three replications. The first factors was the paclobutrazol concentrate (K) in four levels (k0= No paclobutrazol, k1= 300 ppm, k2= 600 ppm and k3= 900 ppm. The second factors was the application time of paclobutrazol (A), in two levels  (a1= 20th days after planting,  a2= 30th days after planting).  The data were analyzed using analysis of variance and mean separations with Duncan’s New Multiple Range Test at the 5% level. The result showed that there was no interaction between the paclobutrazol concentrate with the application time of paclobutrazol on variable of tomato observed. Paclobutrazol concentrate or its application time effected to plant height and number of flower. Paclobutrazol 300 ppm to 900 ppm concentrate hold up tomato plant height and reduce the number of flower. Application of paclobutrazol 20th days after planting hold up tomato plant height and reduce the number of flower. Keywords: Paclobutrazol concentrate, Different time of application, Tomato.
RESPON BIBIT KELAPA SAWIT (Elaeis guineensis Jacq.) YANG MENGALAMI CEKAMAN GENANGAN AIR TERHADAP PUPUK DAUN DAN GIBERELIN Reza Kurniawan; Gunawan Tabrani; Nurbaiti Nurbaiti
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
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The research does to increase of palm oil seedling on waterlogging growth with foliar fertilizer and gibberellins application. Research conducted in research farm of Agriculture Faculty, University of Riau, Pekanbaru from September until Desember 2016. This research arranged experimentally by using Completely Randomized Design Factorial with 3 replication. Factor I is concentrate of foliar fertilizer  (D) consist of d0 = no foliar fertilizer (0 ppm), d1 = foliar fertilizer 1,500 ppm, d2 = foliar fertilizer 3,000 ppm and factor II is concentrate of gibberellins (G) consist of g0 = no gibberellins (0 ppm), g1 = gibberellins 5,000 ppm, g2 = gibberellins 10,000 ppm. The observed does: height of seedling, amount of leaf midrib, diameter of tubercle, amount of adventif root, volume of root, shoot root ratio and quality index of seedling. The data were analyzed using analysis of variance and followed by Orthogonal at level of 5%. The result showed that interaction of foliar fertilizer and gibberellin only occured at inisiation of adventif root. The foliar fertilizer influent to establishment of adventif root and shoot root ratio, while gibberellins influent to height of seedling and establishment of adventif root. Quality Index of seedling in this research fulfill requirement criteria of palm oil seedling growth. Keywords: palm oil seedling, waterlooging stress, foliar fertilizer and gibberellin 
Penggunaan Macam Mulsa dan Air Kelapa dalam Peningkatan Hasil Bawang Merah (Allium ascalonicum L.) Lara Nafrilla Sari; Gunawan Tabrani
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
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The aim of this research was to get better yields of the true shallot (Allium ascalonicum L.) seed of Tuk Tuk variety on land that had been given plastic mulch and sprayed with coconut water. The research was carried out under the experimental garden shading net of the Faculty of Agriculture, Riau University, Pekanbaru, from July to October 2019, in split plot design experiment of simple random pattern with 3 replications. The main plot is a type of plastic mulch (M), consisting of: m1 = no mulch, m2 = silver black mulch, and m3 = silver mulch. The subplots was concentration of coconut water (K) as follows: k0 = 0%, k1 = 25%, k2 = 50%, and k3 = 75%. Variables observed were clump height, number of leaves per tuber, number of leaves per clump, tuber weight per clump, number of tubers per clump, tuber diameter, tuber height, weight of fresh tubers per plot and weight of dry tubers per plot. The observational data were analyzed of variance and Duncan New Multiple Range Test (DNMRT) at the 5% level. The results showed that no interaction between the type of mulch and the concentration of coconut water on the growth and production components of Tuk Tuk shallot seedlings. The growth components of the clump height and the number of leaves per clump, as well as the production components of tuber diameter and tuber height of the Tuk Tuk variety of shallots seedling is better if the plants are on land with silver mulch. The growth and production of the Tuk Tuk shallots seedlings  is not optimal because of weather disturbances and the shading net environment does not meet the growing requirements.Keywords: True Shallot Seed, mulch, coconut water
Peningkatan Produksi Bunga Mawar (Rosa Hybrida L.) Asal Stek yang Diberi Paklobutrazol pada Waktu Berbeda Nurul Kumala; Gunawan Tabrani; Irfandri Irfandri
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
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This research aims to increase the production of rose flower (Rosa hybrida L.) in quality standards by takenthe paclobutrazol which is done at different age of rose cuttings. The research was conducted on the Faculty of Agriculture experimental farden, Riau University, from May 2019 to August 2019. The study was conducted in the 4 x 4 factorial completely randomized design (CRD) in three replications. The first factor: paclobutrazol (P) with 4 concentrations: p0 = 0 ppm, p1 = 125 ppm, p2 = 250 ppm, and p3 = 375 ppm. The second factor: age of rose (W), in stages, was: w0 = 2WAP, w1 = 4WAP, w2 = 6WAP, and w3 = 8WAP. The variables observed were: shoot length, the first time flower budding appeared, the first flower to appeared, the flower stalklength, the flower stalkdiameter, the bloom period, the plant height, the stem diameter, the number of flowers per plant, the largest flower diameter, and the first time harvest aged. The results showed that the flower stalk diameter, the length of the bloom, the stem diameter, and the largest flower diameter were influenced of the interaction between paclobutrazol concentration and the cuttings aged. The first budding appeared, the first flower appeared, the plant height, the number of flowers per plant, and the age of the first harvest were influenced of paclobutrazolconcentration. The standard quality of rose plants from cuttings does taken, if application of ZPT paclobutrazol in 250 ppm while the cuttings were 2WAP.  Keywords: rose flower, paclobutrazol concentration, plant age.
Co-Authors ', Ardinal ', Nurbaiti ', Rosmimi ', Suseno ', Syahputra , Deviona, , , Gusmawartati Adiwirman Adiwirman Adiwirman Adiwirman, Adiwirman Aryanti, Deci Deviona ' Dewi Anggraini Dimas Parikno Erlida Ariani Fajar Nopendri Fifi Puspita Hapsoh Idwar, Idwar Iga Azalia Lamonda Indra Saputra Irfandri Irfandri Islan, Islan Isnaini Isnaini Janter Manurung Jefri Rudiansyah Joko Supriadi Klaus Rotama Ginting Lara Nafrilla Sari Legiman, Legiman Luh Putu Ratna Sundari Ma’arif, Samsul Masnur Kristina, Masnur Muhamat Ripai Nanda Intan Habibah Nurbaiti ' Nurbaiti Nurbaiti Nurrahmi Yulfia Nurul Kumala Qurrata A’yun Reza Kurniawan Rika Neli Haice Riki Noviantoni Rlwanl Arisantl Rosmimi ' Sari, Muspika Sari Situmorang, Amri Ayu Sukemi Indra Saputra Supriadi Widodo Suseno ' Syafrinal, Syafrinal Syafrinal, Syafrinal Syafrinal Wawan Wawan Wedia Simanjuntak, Wedia Yunel Venita Zainal Arifin