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PERTUMBUHAN DAN PRODUKSI JAGUNG MANIS (Zea mays sacaratha Sturt. L) PADA BERBAGAI JARAK TANAM DAN WAKTU OLAH TANAH Evy Thyrida Silaban; Edison Purba; Jasmani Ginting
Jurnal Agroekoteknologi Vol 1, No 3 (2013)
Publisher : Universitas Sumatera Utara

The aim of the research was to evaluate the growth and production of sweet corn (Zea mays sacharata Sturt. L) planted at various distance and land preparation (soil tillage prior to planting). The treatments were arranged in split plot design with three replication. The study consists of two factors, as main plot was time of soil tillage prior to planting (one and seven days) whereas sub plot was planting distance consist of four different spaces : 70cm x 10cm, 70cm x 20cm, 70cm x 30cm dan 70cm x 40cm. Result showed that the plant spacing consists of 70cm x 40cm performs significant effect on number of leaves, stem diameter, cob diameter, and production per plant, but not significant effect on flowering time and number of cobs per plot. The interaction between time of planting and planting space had no significant effect on plant height, number of leaves, stem diameter, days to flowering, cob diameter, number of cobs per plot, weight of cobs per plot and production per plant. Keywords: sweet corn, plant spacing and tillage time

RESPOMS PERTUMBUHAN DAN PRODUKSI SAAWI (Brassica Juncea. L) TERHADAP INTERVAL PENYIRAMAN DAN KONSENTRASILARUTAN PUPUK NPK SECARA HIDROPONIK Marnangon Alfa Tambunan; Asil Barus; Jasmani Ginting
Jurnal Agroekoteknologi Vol 1, No 3 (2013)
Publisher : Universitas Sumatera Utara

The aimed of this reaserch was to determine the flush interval and consentration of NPK fertilizer which is suitable to the growth and production of mustard (Brassica juncea L.) This research was conducted at green house’s Agricultur faculty University of Sumatera Utara, Medan with a height of 25 metre sea level rise on Februari until April 2012. This research was conducted by factorial randomized block design with two factors such as flush interval (1,2,3 in a day) and NPK fertilizer 0, 2.5, 5, 7. 5, 10 (g/l water). The parameters observed were plant height, the number of leaf, leaf area, the scale of leaf chlorophyll , the weight biomass of plant, The fresh weight of selling, the weight of roots, the root’s length and the harvest indeks. The result of the observations showed that the flush interval had ureal effect to all of the parameters except the root’s weight, while the NPK fertilizer had a real effect to all of the parameters.

PENGARUH KONSENTRASI DAN FREKUENSI APLIKASI ETEPHON TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN MENTIMUN (Cucumis sativus L.) Cici Octavia Sidauruk; Jasmani Ginting; Justin Napitupulu Napitupulu
Jurnal Agroekoteknologi Vol 2, No 1 (2013)
Publisher : Universitas Sumatera Utara

ABSTRACTThe effect of Concentration and Frequency of Etephon Aplication on Growth and Production ofcucumber (Cucumis sativus L.). Cucumber in Indonesia is popular and likely vegetable for all ofsociety. Cucumber productivity (ton/ha) in Indonesia from 2007 to 2011 were decrease from 81.2 to527.1 this was due to less intensive and efficiency in cucumber culture one of the alternative that couldbe done was application etephon of plant growth regulator. The aim of this research was to know theeffects of concentration and frequency of etephon application on growth and production of cucumber,this study was done in faculty of agriculture net house medan (± 25 in above sea level) from Januari –maret 2013. The design used was Randomised Block Design with 2 factors, etephon concentration (0.150, 300 dan 450 ppm) and the frequency of application (1x, 2x and 3x times). The parameterscolected were plant length, number of leaves formed, number of lived leaves, number of femaleflowers, number of female flowers aborted, number of male flowers, ratio of flowers, number of fruitper plant and total weight perplant. From the research, concentration affect significantly on plantlength (4-8 weeks after planting), number of female flowers (39 and 51 days after planting), number offemale flowers aborted (42 and 60 days after planting), number all of male flowers, ratio of flowers (48days after planting). Frequency aplication of etephon affect significantly plant length (6-7 weeks afterplanting). Interaction affect significantly on flowers ratio (48 days after planting ).Keywords : cucumber, concentration , and frequency Etephon.

RESPONS MORFOLOGI BENIH KARET (Hevea brasiliensis Muell Arg.) TANPA CANGKANG TERHADAP PEMBERIAN PEG 6000 DALAM PENYIMPANAN PADA DUA MASA PENGERINGAN Gustiansyah Perdhana Putra; Charloq Charloq; Jasmani Ginting
Jurnal Agroekoteknologi Vol 2, No 1 (2013)
Publisher : Universitas Sumatera Utara

ABSTRACTMorphological response of shelled rubber seed (Hevea brasilliensis Muell Arg.) by givingPolyethylene Glycol (PEG) 6000 in storage at two drying period. Rubber seeds arerecalcitrant seeds that have a high water content so it can not be stored longer because rapiddeteriorated so it needs special handling to increase storability. PEG 6000 is a compound thatcan help maintain seed viability in storage because has the potential osmoticum, which canlimit the imbibition and diffusion processes. Research purposes was to determine theconcentration of PEG and seed drying time appropriate to improve storability the seeds.Research conducted in the Seed Technology Laboratory, Agricultural Faculty, SumateraUtara University in January to March 2012. Nested factorial experiment was arranged in atwo-stage nested design namely time drying as nested factor (drying time at 00:00 am to06:00 am and 6:00 am to 12:00 am) and PEG 6000 (w/v) concentration factor as sub nest(0%, 15%, 30%, 45% ). Parameters namely observed in seed storage fungal andrecapitulation seeds germinated after storage. The results showed that fungal seeds in storageat a concentration of 15% PEG can reduce up to 13,33% with seed germination to 87,13 %and fungal seeds in storage at drying time at 06:00 am to 12:00 am can reduce up to 6.83%with recapitulation seed germination after storage to 93,74%.Key words: rubber seeds, time drying, PEG 6000

RESPONS PERTUMBUHAN DAN PRODUKSI BEBERAPA VARIETAS BAWANG MERAH(Allium ascalonicum L.) TERHADAP BERBAGAI SUMBER NITROGEN ORGANIK Sugiyarto Sugiyarto; Meiriani Meiriani; Jasmani Ginting
Jurnal Agroekoteknologi Vol 2, No 1 (2013)
Publisher : Universitas Sumatera Utara

The research had been conducted at Tanjung Sari, Medan at ± 25 m asl from April until June 2012.The research using factorial randomized block design with 2 (two) treatment factors. The first factorwas using of three variety namely : V1: Bima Brebes; V2: Kuning; V3: Sembrani. The second factorwas addiction of fertilizer as organic nitrogen source with four levels P0: control ; P1: biomass ofsoya 2.357,67 kg/ha; P2: vermicompost 3.252,55 kg/ ha ; P3: palm oil fruit bunch 2.121,90 kg/ha;P4: chicken manure 3.350,37 kg/ha. The results showed that the Sembrani variety had given thebest results on some parameters of growth and production. The using of biomass of soya 2.357,67kg/ha resulted diameters and weight of tubers were compared with the other organic fertilizers andcontrol. The interaction between the both of treatment was effected significantly on parameters wetweight of tuber per plot, dry weight of tuber per plot, diameter of wet tuber per clump and diameterof dry tuber per clump.Key words : varieties, organic nitrogen, shallot

TANGGAP PERTUMBUHAN VEGETATIF BIBIT KAKAO (Theobroma cacao L.) DENGAN PEMBERIAN VERMIKOMPOS DAN AIR PADA BERBAGAI KAPASITAS LAPANG Ichsan Destari Purba; Irsal Irsal; Jasmani Ginting
Jurnal Agroekoteknologi Vol 2, No 2 (2014)
Publisher : Universitas Sumatera Utara

ABSTRACTResponse of cacao (Theobroma cacao L.) seedlings vegetative growth with the provision ofvermicompost and water at various field capacity. Research aim to know the response of cacaoseedlings vegetative growth with the provision of vermicompost and water at various field capacity.It was conducted at green house, Faculty of Agriculture USU’st about 25 m sea level on November2012 to February 2013 by using a randomized block design factorial with two factor that is the firstfactor were vermicompost (0%, 10%, 20% and 30% of media plant) and the second factor wereprovision of water at various field capacity (100%, 75%, 50% and 25%). The parameters observedwere seedling height, stem diameter, total of leaf area, seedling wet weight, seedling dry weight,root wet weight, root dry weight and water use efficiency. The result of research showed thatvermicompost significant to seedling height, stem diameter, total of leaf area, seedling wet weight,seedling dry weight, root wet weight, root dry weight and water use efficiency. And provision ofwater significant to seedling height, stem diameter, total of leaf area, seedling wet weight, root wetweight and water use efficiency. The interaction of vermicompost and water had not signifficantKey words : cacao, vermicompost, water

PERTUMBUHAN BIBIT KELAPA SAWIT (Elaeis guineensis Jacq.) PADA BERBAGAI PERBANDINGAN MEDIA TANAM SOLID DECANTER DAN TANDAN KOSONG KELAPA SAWIT PADA SISTEM SINGLE STAGE Syukri Habibi Nasution; Chairani Hanum; Jasmani Ginting
Jurnal Agroekoteknologi Vol 2, No 2 (2014)
Publisher : Universitas Sumatera Utara

The objective of this research to study the best composition of various comparison of media soliddecanter and oil palm empty fruit bunch. This research was conducted at Kebun Bangun PTPN IIIKabupaten Simalungun, Pematang Siantar with a height of ± 300 metres above sea level, beginNovember 2012 until July 2013 by using a Randomized Block Design Non Factorial with 11treatment of growing media. The results showed that treatment of growing media significantlyaffected all parameters except plant heigt 6, 8, and 10 week after plan. Using oil palm empty fruitbunch on planting medium increased shoot root ratio.Keywords :solid decanter, palm oil empty fruit bunches, palm oil

RESPONS PERTUMBUHAN DAN PRODUKSI SEMANGKA (Citrullus vulgaris Schard.) TERHADAP KONSENTRASI PACLOBUTRAZOL DAN DOSIS PUPUK NPK Jasmine M. Q. F. C. P; Jasmani Ginting; Balonggu Siagian
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

The aim of this experiment was to determine respons in growth and yield of watermelon topaclobutrazol and dosage of NPK fertilizer. This research had been conducted at field of Pasar Istreet no. 89, Tanjung Sari, Medan (± 25 in above sea level), in April-July 2013 using factorialrandomized block design with two factor, i.e. concentration of paclobutrazol (0, 150, 300, and 450ppm) and dosage of NPK fertilizer (60, 120 and 180 g/plant) in six times. Parameter observed wereplant height, number of female flowers, number of male flowers, total weight persample and totalweight perplant. The result showed that paclobutrazol concentration affect significantly on plantlength (6-8 weeks after planting), number of female flowers (35 and 38 days after planting), numberof male flowers (41 and 44 days after planting), total weight persample, and total weight perplant.Dosage of NPK fertilizer affect significantly on number of male flowers (44 days after planting).Interaction affect significantly on number of female flowers (35 and 38 days after planting) andnumber of male flowers (41 days after planting).Keywords: watermelon, paclobutrazol concentration, and dosage of NPK fertilizer

RESPONS PERTUMBUHAN DAN PRODUKSI BIBIT G2 KENTANG (Solanum tuberosum L.) AKIBAT PERBEDAAN BOBOT UMBI BIBIT (G1) DAN KONSENTRASI PUPUK ORGANIK CAIR DI RUMAH KASA Maria Masela S. Sitanggang; T. Irmansyah; Jasmani Ginting; Agustina br. br. Marpaung
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

The research was conducted at Screen house Experiment Berastagi at ± 1340 m asl from April untilJuly 2013 using split plot design with main plot, i.e. organic liquid fertilizer concentration (0, 2, 4,and 6 mL/L) and sub plot is tuber weight difference (≤ 3, 3-6, 6-9 and 9-12 g). Parameter observedwere plant height, duration of green leaves, tuber weight per plant, weight tuber per plot, and tubergrade percentage.The result showed organic liquid fertilizer treatment significantly defend thechlorophyll leaves (duration of green leaves). Tuber weight difference treatment significantlyincrease plant height, main stem number, tuber number per plant, weight tuber per plot and tubergrade percentage on 10,1 – 20 g. The interaction of two factor significantly increase tuber gradepercentage on ≤ 5 g. The best result was showed by organic liquid fertilizer concentration 6 mL/Land tuber weight 9-12 g.________________________________________________________________________________Keywords : weight tuber, organic liquid fertilizer, potatoes tuber

RESPON PERTUMBUHAN DAN PRODUKSI SAWI (Brassica sinensis L.) DENGAN PEMBERIAN MINERAL ZEOLIT DAN NITROGEN Bram Arda Bintario Bangun; Jasmani Ginting; Ferry Ezra Sitepu
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

Production Growth response and mustard (Brassica sinensis L,.) By Giving Mineral Zeoliteand Nitrogen, guided by Jasmani Ginting dan Ferry Ezra Sitepu. This study aims to test theresponse of the growth and production of mustard on the provision of zeolite and ureafertilizer. The study was conducted in community land Setia Budi Road Simpang SelayangMedan district in May to July 2012. Experimental method used was a factorial randomizedblock design with 2 factors, namely the provision of zeolite (0 g, 50 g / plot, 100 g / plot, 150g / plot) and urea fertilizer (without urea, 0.2 g / tan. , 0.4 g / tan., 0.6 g / plant) with 3replications. The parameters measured were plant height, leaf area, leaf chlorophyll amount,weight biomass per plant, fresh weight per plant and sell the sample harvest index. The resultsshowed that administration of zeolite significant effect on all parameters. While the treatmentof urea fertilizer and the interaction between the two treatments did not significantly affect allparameters.Keywords: zeolite, urea, growth and production of mustard.

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