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All Journal AGROEKOTEKNOLOGI PERTANIAN TROPIK

Lahay, Ratna Rosanty

Program Studi Agroekoteknologi, Fakultas Pertanian, USU, Medan

Author-ID : 3055685

Agriculture, Biological Sciences & Forestry

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RESPON PERTUMBUHAN DAN PRODUKSI BAWANG MERAH (Allium ascalonicum L.) TERHADAP PEMBERIAN PUPUK NPK DAN KOMPOS KULIT BUAH KOPI Afriadi Simanjuntak; Ratna Rosanty Lahay; Edison Purba
Jurnal Agroekoteknologi Vol 1, No 3 (2013)
Publisher : Universitas Sumatera Utara

Application of inorganic fertilizers continuously without the use of organic fertilizers has caused the degradation of agricultural land. The negative impacts caused by land degradation is a decline in agricultural yield, such as the yield of shallot. A solution to solve this problem is to combination inorganic with organic fertilizers. Coffee pulp compost is one of the example of organic fertilizers. So, the research was conductedto investigate combination of NPK fertilizer and coffee pulp compost on growth and production of shallot which is use Randomized Block Design withtwofactors. Firstfactor is NPK fertilizer (0, 150,300, 450kg/ha) and thesecondfactor is coffee pulp compost (0,5, 10, 15 ton/ha).The results showed that the treatment of NPK fertilizer significantly affect the plant height 3,5,6 weeks after planting and production per plot.NPK at 150 kg/ha can increase production by 15.32% compared with no fertilization.Coffee pulp compost treatment significantly affect the production per plot.Compost at 10 ton/ha can increase production by 10.26% compared to without giving compost. The interaction between the NPK fertilizer and coffee pulp compost non significantly affect to all parameters.

TANGGAP PERTUMBUHAN DAN PRODUKSI BEBERAPA VARIETAS KEDELAI (Glycine max L.) TERHADAP PERBANDINGAN KOMPOSISI PUPUK Teguh Satwiko; Ratna Rosanty Lahay; B. Sengli J. Damanik
Jurnal Agroekoteknologi Vol 1, No 4 (2013)
Publisher : Universitas Sumatera Utara

The use of organic fertilizer is needed to replace the role of chemical fertilizers, preserving theenvironment and for sustainable agriculture. The study was conducted in Tanjung Sari, KecamatanMedan Selayang. The research used a Randomized Block Design with two factors. The first factoris varieties (Argomulyo, Burangrang and Anjasmoro). The second factor is the ratio of chemicalfertilizers and vermicompost, which include : chemical fertilizer 0% + vermicompost 100%,chemical fertilizer 25% + vermicompost 75%, chemical fertilizer 50% + vermicompost 50%,chemical fertilizer 25% + vermicompost 75%, and chemical 100% + vermicompost 0%. The resultshowed that Varieties significantly affected the parameters amount of produtive branch, weight ofdry plant, weight of dry root, the number of pods per plant, the number of filled pods per plant,weight of dry seed per sample,and weight of 100 seeds. Varieties did not significantly affect theparameters weight of dry seed per plot. The composition ratio of fertilizers significantly affectedthe parameters weight of dry root, weight of dry seed per sample,and weight of 100 seeds. Inaddition, the ratio of chemical fertilizers and vermicompost did not significantly affect theparameters amount of produtive branch, weight of dry plant, the number of pods per plant, thenumber of filled pods per plant,and weight of dry seed per plot. The interaction between varietiesand the ratio of chemical fertilizers and vermicompost did not significantly affected for allparameters.Key words : varieties, chemical fertilizers, vermicompost, soybeanABSTRAK

PENGARUH PERIODE PANEN TERHADAP VIABILITAS BENIH ROSELA (Hibiscus sabdariffa L.) Dedes Mayang Sari Pulungan; Haryati Haryati; Ratna Rosanty Lahay
Jurnal Agroekoteknologi Vol 2, No 2 (2014)
Publisher : Universitas Sumatera Utara

Roselle has a harvest period that does not simultaneously or concurrently so that harvesting donegradually. To obtain a good quality seed of roselle harvesting seeds based physiologically mature.This research aimed to determine effect of harvest periode for seeds viability of roselle (Hibiscussabdariffa L.). This research has conducted in the experimental field which were ± 25 meters abovesea level and continued in Seed Technology Laboratory of the Faculty of Agriculture, UniversitasSumatera Utara from February to June 2013, using the non factorial completely randomized design.Analyzed of the data using analysis of variance and continued with DMRT. The result of researchhas identified that it has significantly effect of harvest period that influenced weight of 100 seeds(g), number of seeds/fruit (seed), normal germination (%), seeds do not germinate (%), seedling dryweight (g), but it was not significantly to rate of germination (days), abnormal germination (%) andvigor index (%).Keywords: harvest period, viability, seed of roselle

TANGGAP PERTUMBUHAN DAN PRODUKSI JAGUNG MANIS PADA PEMBERIAN MIKROORGANISME BERMANFAAT DAN KOMPOS TANDAN KOSONG KELAPA SAWIT Reyza Kurniawan; Ratna Rosanty lahay; Sanggam Silitonga,; Chairani Hanum
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

Development of sweet corn culture technique need efficient of farming system, more economical,quality, and productivity. For this reason, research has been conducted at experimental field of USUAgriculture Faculty (± 25 m asl.) in July – October 2013 using a randomized block design with twofactors. The first factor was concentrations of microorganism with levels: 0, 10, 20, and 30 ml/l ofwater, were the second factor was doses of Empty Fruit Bunches Oil Palm (EFBOP) compost withlevels: 0, 150, and 300 g per plant with three replications. The result of this research showed thatapplication of microorganism had significant effect on plant height at six’th weeks after planting(WAP), cob with husk per plant, and cob without husk per plant. Empty fruit bunches oil palmcompost significant effect only for stem diameter. Interaction between application microorganismand EFBOP compost significant effect on cob length and cob diameter.Keywords : sweet corn, beneficial microorganisms, EFBOP compost

Pertumbuhan Bibit Kelapa Sawit (Elaeis guineensis Jacq.) Pada Berbagai Perbandingan Media Tanam Sludge dan tandan Kosong Kelapa Sawit (TKKS) Di PreeNursery pree Nur sersey Haikal Hanif Nasution; Chairani Hanum; Ratna Rosanty Lahay
Jurnal Agroekoteknologi Vol 2, No 4 (2014)
Publisher : Universitas Sumatera Utara

Growth of Oil Palm Seedlings (Elaeis guineensis Jacq.) with Different Comparison Sludge andEmpty Palm Oil Fruit Bunches (EPOFB) Media in Pre Nursery. Guided by CHAIRANI HANUMand RATNA ROSANTI LAHAY. The objective of this research was to study growth of oil palmseedlings at various growing media comparisons of sludge and EPOEFB in pre nursery. Thisresearch was conducted at Kebun Bangun PTPN III from January-June 2013 using non factorialrandomized block design consisted of 11 types of growing media: top soil, sludge, TKKS andcomposite media 10:80:10, 10:70:20, 10:60:30, 10:50:40, 10:40:50, 10:30:60, 10:20:70, 10:10:80.Parameters observed were shoot and root dry weight. The results showed that each media haddifferent growth characteristics. The growth media was significantly efffect on all parametersexcept plant height. Sludge can be used as a growing media if it is in the form of a mixture. If thesludge is used alone then plant growth restricted. Media composition 10:20:70 gave the best resultsthrough the highest value shoot dry weight.Keywords : growth , seeds , palm oil , sludge , TKKS

Respon Pertumbuhan Bibit Kakao (Theobroma cacao L.) terhadap Pemberian Pupuk Kandang Ayam dan Pupuk Organik Cair Liperi Tarigan; Ferry Ezra Sitepu; Ratna Rosanty Lahay
Jurnal Agroekoteknologi Vol 2, No 4 (2014)
Publisher : Universitas Sumatera Utara

One of the factors that determine the quality of cocoa seedlings is fertility of growing medium.Fertility of growing medium can be increase with fertilization. For that purpose by using of chickenmanure and liquid organic fertilizer be expected to increase cocoa seedlings. This research wasconducted in experimental field of Agriculture Faculty University of North Sumatera in June 2013-September 2013 using randomize complete block design with two factors. The first factor is dose ofchicken manure (0,150 and 300 g/polibag) and the second factor is dose of liquid organic fertilizer(0,15,30, and 45 cc/L of water). Parameters observed were plant height, number of leaves, stemdiameter,total leaves area, fresh weight of shoot, fresh weight of root, dry weight of shoot, dryweight of root and ratio of dry weight of shoot/dry weight of root. From the research, chikenmanure significantly affect on plant height (12 and 14 WAP), number of leaves( 8-12 WAP), stemdiameter, total leaves area, fresh weight of canopy, dry weight of canopy and fresh weight of root.Liquid organic fertilizer unsignificantly affect on all parameters. Interaction of chiken manure andliquid organic fertilizer unsignificantly affect on all parameters. The best result from thisexperimental were obtained in the treatment of chicken manure at 300 g/polybag and liquid organicfertilizer 15 cc /L of water .

Respon Pertumbuhan Bibit Kakao (Theobroma cacao L.) terhadapPemberian Pupuk Guano dan KCl Pispa Rajagukguk; Balonggu Siagian; Ratna Rosanty Lahay
Jurnal Agroekoteknologi Vol 3, No 1 (2015)
Publisher : Universitas Sumatera Utara

Addition of guano in cultivation of cacao seedling is the one step to use organic fertilizer thatcomes from animal feces and it is used to add soil nutrient for the growth of cocoa seedlings, aswell addition of KCl is used to add soil nutrient too. For that purpose addition guano and KCl aimsto increase growth of cacao in cultivation of seedling. This research had been conducted atexperimental field of agriculture fakulty University of North Sumatera in October 2013 - January2014 using factorial randomized block design with two factor, i.e. addition dose of guano (0, 75 ,150, 225 g/polibag) and dose of KCl (0, 2, 4 g/polibag). Parameter observed were cacao height,cacao stem diameter, cacao leaf number, total leaf area of cacao, shoot fresh weight of cacao, shootdry weight of cacao, root fresh weight of cacao, root dry weight of cacao ,and cacao shoot rootratio. The result showed that parameter cacao height, cacao stem diameter, total leaf area of cacao,shoot fresh weight of cacao, shoot dry weight of cacao, and cacao shoot root ratio weresignificantly to addition guano but total leaf areaof cacao, root fresh weight of cacao, root dryweight of cacao,and cacao shoot root ratio were not significantly to addition guano.The best resultin addition guano is 225 g/polibag that produce shoot dry weight of cacaoas 11.57 g. All parameterswere not significantly to addition KCl and the interaction of two factor. The best resultofcombination is 225 g/polibag of guano and 4 g/polibag of KCl, that produce root dry weight ofcacao as 1.76 g.Keywords :guano, KCl, cacao seedlings.

Respons Pertumbuhan dan Produksi Tanaman Sorgum (Sorghum bicolor (L.) Moenchterhadap Pemberian Mulsa dan Berbagai Metode Olah Tanah Khairunnisa Khairunnisa; Ratna Rosanty Lahay; T. Irmansyah.
Jurnal Agroekoteknologi Vol 3, No 1 (2015)
Publisher : Universitas Sumatera Utara

The research was conducted on Pasar 3 Padang Bulan, Medan about 25 m above sea level fromMay to September 2014. The research uses Split Plot Design with two treatment factors with threereplications. Main plots were soil tillage with two treatments, no-tillage (P0); perfect tillage (P) andthe subplot was mulching with four treatments, without mulch (M0); rice straw mulch (M);Thitonia mulch (M2); Imperata cylindrica mulch (M). The results showed that tillage treatmentsaffected significantly stem diameter ages 8 and 9 weak after plant but not significant affected onother parameters. Mulching treatment not affected significantly on all parameters. The interactionbetween two treatments affected significantly on plant height, number of leaves, and stem diameter.Keywords: soil tillage, mulching, sorghum. 311

The Effect of Media Composition and Soaking Period of Auxin on Bud Chip Technique Sugarcane Seedling Erliandi Erliandi; Ratna Rosanty Lahay; Toga Simanungkalit
Jurnal Agroekoteknologi Vol 3, No 1 (2015)
Publisher : Universitas Sumatera Utara

The objective of the research was obtained the appropriate of media composition and soakingperiod of auxin toward growth of bud chip technique sugarcane seedling. The research wasconducted at experimental field of Tanjung Jatti Estate Binjai PTPN II (± 50 m asl.) in April – Juny2014 using a randomized block design with two factors. The first factor was media compositionwith levels: 50:50, 70:30, and 30:70 (% top soil: % blotong compost), and the second factor wassoaking period of auxin with levels: 10, 20, and 30 minutes to consentration 2 ml/L with threereplications. The result of this research showed that application of media composition wassignificant effected on seedling growth percentage at 1 week after planting (WAP), plant height andstem diameter at 6 WAP, leaf total at 4 and 6 WAP, leaf area at 8 WAP, sturdiness value, shoot/rootratio and seedling quality index. The soaking period of auxin was significant effected on leaf area at 8 WAP and shoot/root ratio. Interaction of both was significant effected only on leaf total at 2 WAPwith M1T3 was the highest. Keywords: bud chip, media, auxin, sugarcane

Respon Morfologi Tanaman Kedelai (Glycine max (L.) Merrill) Varietas Anjasmoro Terhadap Beberapa Iradiasi Sinar Gamma Irwan Bonar Sibarani; Ratna Rosanty lahay; Diana Sofia Hanafiah
Jurnal Agroekoteknologi Vol 3, No 2 (2015)
Publisher : Universitas Sumatera Utara

Soybean was the self pollinated plant with low genetic diversity. The gamma irradiation was used toinduced the mutation as the genetic diversity. The increase of the genetic diversity would make theeasy selection of certain growth character. The effect of gamma irradiation on the first phase ofplant growth would affected the morphological performance and the plant yield. The aim of theresearch was to determine the morphological response of soybean plant (Glycine max (L.) Merill)Anjasmoro variety to the gamma irradiation. The research was priored by inducing the seed ofAnjasmoro variety with several gamma irradiation i.e. : 0, 100, 200, 300 gy. The result showed thatthe gamma irradiation affected the plant height, the number of branches, the time of flowering, theflower colouration, the time of pod maturation, the number of pods, the number of seeds, and theseed weight per plant.Keywords : Anjasmoro, Seeds, Gamma Ray Irradiation

Co-Authors Afriadi Simanjuntak Andika Leorensius Situmeang Ando Tikkos M Simbolon Aprianto Aprianto Asil Barus Asyriani Syahfithri Pulungan Asyriani Syahfithri Pulungan B. Sengli J. Damanik Balonggu Siagian Beatrix Sofranes Napitupulu Bolonggu Siagian Chaidir Azhari Tanjung Chairani Hanum Chairani Hanum Dedes Mayang Sari Pulungan Diana Sofia Hanafiah Dieni Annisa Siregar Edison Purba Edison Purba Erliandi Erliandi Ferry Ezra Sitepu ferry ezra t sitepu Haikal Hanif Nasution Haryati Haryati Heprando Barus Irsal Irsal Irwan Bonar Sibarani JA Napitupulu Jonatan Ginting juna rezekinta s Khairunnisa Khairunnisa Liperi Tarigan M. Fadhil Afief Mariati Mariati Meiriani Meiriani Muhammad Rizky Andry Muhammad Sakti Harahap Nini Rahmawati Nini Rahmawati Nova Lina Simangunsong Octario Damazta Otniel Ginting Pispa Rajagukguk Rasi Kasim Samosir Revandi I M Damanik Reyza Kurniawan Robbi Aditya Candra Sanggam Silitonga, SUFYAN ATSAURI TANJUNG T . Irmansyah T Irmansyah T. Irmansyah. Teguh Satwiko Toga Simanungkalit YOAN DARI Yoseph Marthin Sibarani

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