Dewi Riniarti
Jurusan Budidaya Tanaman Perkebunan, Politeknik Negeri Lampung Jln. Soekarno-Hatta No. 10 Rajabasa, Bandar Lampung, Telp (0721) 703995. Fax: (0721) 787309

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Pengaruh Jenis Limbah Agro Industri Terhadap Keragaan Bibit Sawit Main Nursery pada Ultisol Riniarti, Dewi; Kusumastuti, Any; Tahir, M.
Jurnal Penelitian Pertanian Terapan Vol 13, No 2 (2013)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v13i2.175

Abstract

This study aims to (1) the effect of type of waste on the performance of oil palm seeds (2) get the best incubation time to obtain good quality compost and its effect on the performance of seeds (3) get a good composition of the media to get the performance of both oil palm seedlings and its influence terhdap Ultisol physical properties, and (4) the effect of interaction between the type of waste, a long incubation, and the composition of the planting medium terhdap the performance of oil palm seedlings and Ultisol physical properties. The experiment was conducted in Palm Nursery Polytechnic Lampung from July 2009 until April 2010., Designed in factorial randomized block design. The treatments consisted of 3 (three) factors. The first factor is the type of waste consisting of sugar cane waste (bagase) and empty fruit bunches (Tankos) palm oil. The second factor is the length of incubation of waste, consisting of 2 (two) and 3 (three) weeks. Factors to 3 (three) is the composition of media, namely: 1 (compost): 4 (ground); 1 (compost): 5 soil, and 1 (sand): 4 (ground) as a control. Each treatment was replicated 3 (three) times, each experimental unit consisted of two seeds. The results showed that the sugar agro waste (bagasse) effect on plant height is better than empty fruit bunches Palm Oil (Tankos); waste Incubation period 3 weeks performed better on the character of dry weight, ratio of crown root and seedling growth rate; Bagas incubated 3 weeks influential The best in plant height; media composition had no effect on the growth characteristics of oil palmseedlings in the main nursery. Keywords: Oil Palm Seedlings, bagase, empty fruit bunches palm oil, incubation periode, and ultisol.
Pengaruh Bahan Organik, Pupuk P, dan Bakteri Pelarut Phosfat Terhadap Keragaan Tanaman Kelapa Sawit pada Ultisol Riniarti, Dewi; Kusumastuty, Any; Utoyo, Bambang
Jurnal Penelitian Pertanian Terapan Vol 12, No 3 (2012)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v12i3.216

Abstract

This study was aims to determine the effect of organic matter kind, phosphate fertilizers, phosphate solubilizing bacteri, and an interaction effect between type of organic matter with phosphate fertilizers, and phosphate solubilizing bacteri on vigour of oil palm at ultisol. The study was designed as a factorial in a randomized block design and each treatment was repeated 3 (three) times. The treatment consisted of 3 (three) factors. First factor were kind of organic matter: bagase and empty fruit bunches of oil palm, and without organic matter; second factor were Phospate fertilizer consisted of 45 grams of P2O5 per tree (the recommended dose) or 125 g SP-36 and 56.25 g per tree (125% recommended dose) or 156.25gSP-36; and third factor were with and without of posphat solubilizing bacteri. The results showed that: the organic material bagasse provided vegetative characters (leaf number, petiole length, leaf angle, leaf chlorophyll content, and in the number of leaves) of oil palm plantations in the Ultisol was better than empty fruit bunches of oil palm plantations in ultisol, and empty fruit bunches of palm oil gave the generative character (the number of female flowers, sex ratio) on oil palm plantations in the Ultisol better than bagasse. Key words: organic matter, phosphate fertilizer, phosphate solubilizing bacteria,vigour of oil palm before producted, and ultisol.
EFFECTS OF ZEOLITE AND LIQUID WASTE OF MSG (MONOSODIUM GLUTAMATE) ON PRODUCT OF NILAM PLANT (Pagostemon Cablin BENTH) IN ULTISOLS Kusumastuti, Any; Parapasan, Jonathan; Riniarti, Dewi
Jurnal Zeolit Indonesia Vol 6, No 1 (2007)
Publisher : Jurnal Zeolit Indonesia

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

Abstract

Ultisols is soil which predominate area in Lampung Province. This soil is rather acid until acid reaction, low in cation exchange capacity (CEC) and organic materials content so that cause inefficient of fertilization. Zeolite is a available and potential mining products and it is abundant available in Lampung Province. It can also to improve CEC of soil so that the absorption of soil to fertilizer can be increased. Besides, it has a high negative charges, so that it can also absorbed of nutrients and discharged it slowly. A liquid waste of MSG is an agroindustrial waste which enough potential. The waste contains the high enough organic materials and compound, especially nitrogen. Low of organic materials at Ultisols, caused needed an input to this management, for example combination usage of zeolite and liquid waste MSG. Nilam is plantation crop which have a good enough prospect, and have potency as state resource of stock-exchange and also can open the new employment. This research arranged in garden of Lampung State Polytechnic, Hajimena district, with Ultisols, it’s started from July until January 2006. The research was conducted on factorial method with randomized block design, consist of 2 factors, zeolite application Z0 (0;1,5; 3,0; 4,5 ton/ha), and liqud waste of MSG (0; 2000; 4000, 6000 l/ha). The data were analysed and then, if the F-test is significantly different we continued with mean of BNT test. Using zeolite at 1,5 ton/ha level increased the plant fresh weight and at 3,0 ton/ha level improved the plant dry weight. Using liquid waste of MSG at of 6000 l/ha level, the highest result of fresh weight and dry weight of plant. Interaction of zeolite and liquid waste of MSG at combination of 4,5 ton/ha and 2000 l/ha showed the highest result on fresh weight and dry weight of root. The combination of 3,0 ton/ha and 6000 l/ha of zeolite and liquid waste of MSG showed the highest result on the ratio of root weight.
Karakteristik Cendawan Mikoriza Arbuskula (CMA) pada Beberapa Rhizosfer Tanaman Perkebunan Yuliyanto, Indra; Utoyo, Bambang; Riniarti, Dewi
Jurnal Agro Industri Perkebunan Volume 4 No. 2, Oktober 2016
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/aip.v4i2.51

Abstract

The development of Mycorrhizal Arbuscular Fungi (MAF) in general is influenced by the conditions of the rhizosphere and fungi spores. Rhizosphere conditions are conditions around the roots such as temperature, pH, and root exudates. While the condition is a fungal spore dormancy and maturity spores. The aim of this study was to determine the amount of FMA on some plantation crops rhizosphere, to determine the type of crop rhizosphere FMA on some plantations, as well as to determine the dominance of FMA on some plantation crops rhizosphere. The experiment was conducted at the Laboratory Analysis State Polytechnic of Lampung. Month trial period from December 2014 to July 2015. The method used in this study is a description of the method by observation. Based on research results and observations of mycorrhizal spores in the rhizosphere of plants cocoa, rubber, coffee, and palm oil was found that on average the highest number of spores found in oil palm plantations (2.4 spores), while the lowest number of spores present in the rubber plantations (1 spore ). Type spores on all plantation crops rhizosphere dominated by species Glomus with different types (10 types). Glomus Type 2 dominates on all plantation crops rhizosphere.Keywords: estate crop, mycorrhizae, rhizospherePermalink: http://jurnal.polinela.ac.id/index.php/AIP/article/view/51
Karakterisasi Morfofisiologi dan Hasil Minyak 10 Genotip Nilam (Pogostemon cablin Benth.) Wulansari, Retno; Tahir, Muhammad; Indrawati, Wiwik; Riniarti, Dewi
Jurnal Agro Industri Perkebunan Volume 6 No. 1, Mei 2018
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jaip.v6i1.657

Abstract

Characterization of morphophysiology and oil yield of 10 patchouli genotypes (Pogostemon cablinBenth.) aims to test the morphology and physiology character of nine genotypes Aceh patchouli and one comparative clone (Lhokseumawe), obtain high yield oil clones (weight plant and essential oil content), and obtain genetic and phenotypic variabilities that can be used as a new genotype selection indicators. The research was conducted at Experimental Field and Plant Laboratory of the State Polytechnic of Lampung in April until November 2016. This research used Randomized Block Design (RBD) with 10 treatment levels and 3 replications.The LSI test results on the physiological character of the nine genotypes and one comparative clone showed that NPL 9 genotypes superior to the variables of the angle of petiole, chlorophyll content, leaf area, specific leaf area, and leaf area index. The NPL 9 genotypes resulted higher yield and rendement yields than other genotypes tested and one comparator, that was 2,36%. The character of stem production and rendement has a genetic variant value greater than the environmental variant. For genetic variability and phenotypic variability in the variables observed relatively uniform so that can not be used as an indicator of selection.   Keywords: Aceh patchouli, leaf character, selection indicator, variability of genotype, variability of phenotype
Pengaruh Jenis Limbah Agro Industri Terhadap Keragaan Bibit Sawit Main Nursery pada Ultisol Riniarti, Dewi; Kusumastuti, Any; Tahir, M.
Jurnal Penelitian Pertanian Terapan Vol 13, No 2 (2013)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v13i2.175

Abstract

This study aims to (1) the effect of type of waste on the performance of oil palm seeds (2) get the best incubation time to obtain good quality compost and its effect on the performance of seeds (3) get a good composition of the media to get the performance of both oil palm seedlings and its influence terhdap Ultisol physical properties, and (4) the effect of interaction between the type of waste, a long incubation, and the composition of the planting medium terhdap the performance of oil palm seedlings and Ultisol physical properties. The experiment was conducted in Palm Nursery Polytechnic Lampung from July 2009 until April 2010., Designed in factorial randomized block design. The treatments consisted of 3 (three) factors. The first factor is the type of waste consisting of sugar cane waste (bagase) and empty fruit bunches (Tankos) palm oil. The second factor is the length of incubation of waste, consisting of 2 (two) and 3 (three) weeks. Factors to 3 (three) is the composition of media, namely: 1 (compost): 4 (ground); 1 (compost): 5 soil, and 1 (sand): 4 (ground) as a control. Each treatment was replicated 3 (three) times, each experimental unit consisted of two seeds. The results showed that the sugar agro waste (bagasse) effect on plant height is better than empty fruit bunches Palm Oil (Tankos); waste Incubation period 3 weeks performed better on the character of dry weight, ratio of crown root and seedling growth rate; Bagas incubated 3 weeks influential The best in plant height; media composition had no effect on the growth characteristics of oil palmseedlings in the main nursery. Keywords: Oil Palm Seedlings, bagase, empty fruit bunches palm oil, incubation periode, and ultisol.
Pengaruh Bahan Organik, Pupuk P, dan Bakteri Pelarut Phosfat Terhadap Keragaan Tanaman Kelapa Sawit pada Ultisol Riniarti, Dewi; Kusumastuti, Any; Utoyo, Bambang
Jurnal Penelitian Pertanian Terapan Vol 12, No 3 (2012)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v12i3.216

Abstract

This study was aims to determine the effect of organic matter kind, phosphate fertilizers, phosphate solubilizing bacteri, and an interaction effect between type of organic matter with phosphate fertilizers, and phosphate solubilizing bacteri on vigour of oil palm at ultisol. The study was designed as a factorial in a randomized block design and each treatment was repeated 3 (three) times. The treatment consisted of 3 (three) factors. First factor were kind of organic matter: bagase and empty fruit bunches of oil palm, and without organic matter; second factor were Phospate fertilizer consisted of 45 grams of P2O5 per tree (the recommended dose) or 125 g SP-36 and 56.25 g per tree (125% recommended dose) or 156.25gSP-36; and third factor were with and without of posphat solubilizing bacteri. The results showed that: the organic material bagasse provided vegetative characters (leaf number, petiole length, leaf angle, leaf chlorophyll content, and in the number of leaves) of oil palm plantations in the Ultisol was better than empty fruit bunches of oil palm plantations in ultisol, and empty fruit bunches of palm oil gave the generative character (the number of female flowers, sex ratio) on oil palm plantations in the Ultisol better than bagasse. Key words: organic matter, phosphate fertilizer, phosphate solubilizing bacteria,vigour of oil palm before producted, and ultisol.
Karakterisasi Morfofisiologi dan Hasil Minyak 10 Genotip Nilam (Pogostemon cablin Benth.) Wulansari, Retno; Tahir, Muhammad; Indrawati, Wiwik; Riniarti, Dewi
Jurnal Agro Industri Perkebunan Volume 6 No. 1, Mei 2018
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jaip.v6i1.657

Abstract

Characterization of morphophysiology and oil yield of 10 patchouli genotypes (Pogostemon cablinBenth.) aims to test the morphology and physiology character of nine genotypes Aceh patchouli and one comparative clone (Lhokseumawe), obtain high yield oil clones (weight plant and essential oil content), and obtain genetic and phenotypic variabilities that can be used as a new genotype selection indicators. The research was conducted at Experimental Field and Plant Laboratory of the State Polytechnic of Lampung in April until November 2016. This research used Randomized Block Design (RBD) with 10 treatment levels and 3 replications.The LSI test results on the physiological character of the nine genotypes and one comparative clone showed that NPL 9 genotypes superior to the variables of the angle of petiole, chlorophyll content, leaf area, specific leaf area, and leaf area index. The NPL 9 genotypes resulted higher yield and rendement yields than other genotypes tested and one comparator, that was 2,36%. The character of stem production and rendement has a genetic variant value greater than the environmental variant. For genetic variability and phenotypic variability in the variables observed relatively uniform so that can not be used as an indicator of selection.   Keywords: Aceh patchouli, leaf character, selection indicator, variability of genotype, variability of phenotype
Karakteristik Cendawan Mikoriza Arbuskula (CMA) pada Beberapa Rhizosfer Tanaman Perkebunan Yuliyanto, Indra; Utoyo, Bambang; Riniarti, Dewi
Jurnal Agro Industri Perkebunan Volume 4 No. 2, Oktober 2016
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/aip.v4i2.51

Abstract

The development of Mycorrhizal Arbuscular Fungi (MAF) in general is influenced by the conditions of the rhizosphere and fungi spores. Rhizosphere conditions are conditions around the roots such as temperature, pH, and root exudates. While the condition is a fungal spore dormancy and maturity spores. The aim of this study was to determine the amount of FMA on some plantation crops rhizosphere, to determine the type of crop rhizosphere FMA on some plantations, as well as to determine the dominance of FMA on some plantation crops rhizosphere. The experiment was conducted at the Laboratory Analysis State Polytechnic of Lampung. Month trial period from December 2014 to July 2015. The method used in this study is a description of the method by observation. Based on research results and observations of mycorrhizal spores in the rhizosphere of plants cocoa, rubber, coffee, and palm oil was found that on average the highest number of spores found in oil palm plantations (2.4 spores), while the lowest number of spores present in the rubber plantations (1 spore ). Type spores on all plantation crops rhizosphere dominated by species Glomus with different types (10 types). Glomus Type 2 dominates on all plantation crops rhizosphere.Keywords: estate crop, mycorrhizae, rhizospherePermalink: http://jurnal.polinela.ac.id/index.php/AIP/article/view/51
Analisis Sistem Persediaan Bahan Baku Air Kelapa pada Industri Nata de Coco (Studi Kasus PT Keong Nusantara Abadi) Pangesti, Shella Puji; Saty, Fadila Marga; Riniarti, Dewi
Jurnal Agro Industri Perkebunan Volume 7 No. 2, Oktober 2019
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jaip.v7i2.1111

Abstract

Inventory is an important thing for the industrial company, so determination of order quantity must be done optimally and reduce the inventory cost.  PT Keong Nusantara Abadi is an industrial company for processing of nata de coco that requires an inventory control system so that the purchase of raw material becomes optimal.  Therefore, this research was conducted to analyze inventory control carried out by PT Keong Nusantara Abadi and determine alternative methods of inventory control of raw material for the company.  This research use Material Requirement Planning (MRP) system.  MRP system has two ways to determine the order quantity called lot sizing decision.  Techniques for determining the quantity of order is Economic Order Quantity (EOQ), Lot for Lot (LFL), and Part Periode Balancing (PPB).  The technique of determining the order quantity that is best use by PT Keong Nusantara Abadi is EOQ which result in lower inventory cost than inventory control techniques by the company that is saved by 9%, 10%, 7,3% consecutively during 2015, 2016, and 2017.