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AGROEKOTEKNOLOGI

agroekoteknologi
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Published by Universitas Sumatera Utara

ISSN : 23376597 EISSN : - DOI : -

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

Jurnal AGROEKOTEKNOLOGI merupakan jurnal ilmiah yang diterbitkan secara online berisikan hasil-hasil penelitian tentang hama dan penyakit tumbuhan, agronomi, pemuliaan tanaman dan ilmu tanah

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Articles 59 Documents

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Search results for , issue "Vol 1, No 4 (2013)" : 59 Documents clear

SURVEI DAN PEMETAAN STATUS FOSFAT LAHAN SAWAH PADA DAERAH IRIGASI BAHAL GAJAH/TIGA BOLON KECAMATAN SIDAMANIK KABUPATEN SIMALUNGUN Meilissa Damayanti Lumban Gaol; Supriadi Supriadi; Mariani Sembiring
Jurnal Agroekoteknologi Vol 1, No 4 (2013)
Publisher : Universitas Sumatera Utara

Survey and mapping phosphorus status on irrigated rice field at Bahal Gajah and Tiga Bolonvillage in Sidamanik Subdistrict. This research purpose to make a map phosphate status on wet ricefield in irrigation area Bahal Gajah/Tiga Bolon. The research start to do on May until December2012. Method of sample take use free grid survey method with semi detail survey scale. Result ofanalysis process using regreation method, with Geografis Information System (GIS) program.Parameter that analysis in laboratory is phosphate available and phosphate total. The result ofresearch showed that phosphate available divided by 3 status such as; medium (6,087 ha), high(136,005 ha), and highest (286,101 ha). Phosphate total divided by 3 status such as; medium(48,393 ha), high (109,445 ha), and highest (269,263 ha).Key words: mapping, phosphorus

TINGKAT SERANGAN ULAT KANTONG Metisa plana Walker (Lepidoptera: Psychidae) TERHADAP UMUR TANAMAN KELAPA SAWIT (Elaeis guineensis Jacq.) DI KEBUN MATAPAO PT. SOCFIN INDONESIA Nugraha Sembiring Nugraha Sembiring; Mena Uly Tarigan; Lisnawit Lisnawit
Jurnal Agroekoteknologi Vol 1, No 4 (2013)
Publisher : Universitas Sumatera Utara

The attack rate of bagworms Metisa plana Walker (Lepidoptera: Psychidae) on the age of oil palm(Elaeis guineensis Jacq.) at Matapao Plantation, PT Socfin Indonesia. Under the supervision ofMena Uly Tarigan as the chairperson and Lisnawita as the member. The aim of the research was toknow the attack rate of bagworms (Metisa plana Walker) on the age of oil palm at the planting areaof TBM (pre-producing plant) and TM (post-producing plant). The research was conducted atMatapao Plantation, PT Socfin Indonesia, Teluk Mengkudu Subistrict, Serdang Bedagai Districtwith the altitude of ± 20 meters from the sea level. The research used a survey method withdiagonal samples. The results of the research showed that the attack rate of bagworms was higheron the TBM than on TM. The highest number of pests was found at block 27 in the planting year of2011 with 119 pests, while the highest rate of attack by bagworms (19.758%) was found at block 28in the planting year of 2009. The highest attack of bagworms was found in sample 50 at block 27 inthe planting year of 2011 with 15 pests in each frond. The highest intensity of bagworms’ attack(50%) was in sample 50 at block 27 in the planting year of 201, and it was categorized as amoderate attack.Keywords: bagworms Metisa plana, oil palm, the age of oil palm

UJI ANTAGONISME ISOLAT MUTAN Sclerotium rolfsii SACC. TERHADAP ISOLAT TIPE LIAR Sclerotium rolfsii SACC. DI LABORATORIUM Nurainun Nasution; Hasanuddi Hasanuddi; Darma Bakti Darma Bakti
Jurnal Agroekoteknologi Vol 1, No 4 (2013)
Publisher : Universitas Sumatera Utara

Antagonism test mutated isolate of Sclerotium rolfsii Sacc. against wild type isolate ofSclerotium rolfsii Sacc. in laboratory. This research aims to determine ability from mutated isolateof S. rolfsii to inhibit wild type isolate of S. rolfsii’s growth in laboratory. It was conducted in PlantPathology Laboratory, Faculty of Agriculture, University of Sumatra Utara, Medan from Septemberuntil November 2012. It was done by using Completely Randomized Design Non Factorial with 7treatments and 3 replications. This research’s result showed that highest percentage of inhibitingzones contained at 20 and 25 minutes UV irradiated isolate (M4 and M5) at 63.66 % and 60.95 %and the lowest were at 30 and 15 minutes UV irradiated isolate (M6 and M3) at 52.80 % and55.17 %. Macroschopic of S. rolfsii experience of the change at 15 and 30 minutes UV irradiatedisolate (M3 and M6) were in the form of colony more dense and compact, myselium like cotton andhyphae in the form of refinement. The highest diametre from mutated isolate of S. rolfsii containedat 20 minutes UV irradiated isolate (M4) at 6.63 cm and the lowest were at 30 minutes UVirradiated isolate (M6) at 4.76 cm. The highest wide of growth from mutated isolate of S. rolfsiicontained at 20 minutes UV irradiated isolate (M4) at 34.15 cm2 and the lowest were at 30 minutesUV irradiated isolate (M6) at 18.54 cm2.Keywords: S. rolfsii, antagonism, pathogenecity, sclerotia.

RESPONS PERTUMBUHAN BIBIT KAKAO TERHADAP VERMIKOMPOS DAN PUPUK P Onny Suriyono Silaen Onny Suriyono Silaen Onny Suriyono Silaen; Ferry Ezra Sitepu; Balonggu Siagian
Jurnal Agroekoteknologi Vol 1, No 4 (2013)
Publisher : Universitas Sumatera Utara

Response of Cacao (Theobroma cacao L.) Seedlings Growth on Application of Vermicompost andP Fertilizer. The research was conducted to determine response of cacao seedlings growth onapplication of vermicompost and P fertilizer. The research carried out at Faculty of AgricultureUSU’s Experiment Land with a height of 25 metre above sea level on August until November 2012by using Randomized Block Design of two factors which is the first factors were vermicompost(0%, 25%, 50%, 75%) and the second factor were P fertilizer (0, 2, 4, 6 g/plant). The parametersobserved were seedling height, leaf number, stem diameter, total of leaf area, seedling wet weight,seedling dry weight, root wet weight, root dry weight and shoot root ratio. The results showed thatvermicompost has significant effects on seedling height, leaf number and seedling dry weight. Theapplication of P fertilizer and interaction of them had no significant effects on all parametersobserved.Key words : vermicompost, phosphat, cacao

PENGARUH PERENDAMAN BENIH KAKAO DALAM AIR KELAPA DAN PEMBERIAN PUPUK NPKMg (15-15-6-4) TERHADAP PERTUMBUHAN BIBIT KAKAO ( Theobroma cacao L. ) Puji Setiawan Puji Setiawan; Balonggu Siagian; Jonatan Ginting, Jonatan Ginting,
Jurnal Agroekoteknologi Vol 1, No 4 (2013)
Publisher : Universitas Sumatera Utara

Coconut water is good in increasing the plant’s growth because it containsfitohormon and several growth vitamins. The right dosage of NPKMg fertilizationcan maximize the growth of cacao seedling. This research was conducted in desaTanjung Selamat kecamatan Medan Sunggal, start on January 2012 and end onMay 2012. The design used was a factorial randomized block design with twotreatment factors. The first factor is the duration of soaking in coconut water in 4stages, which are K0 (0 hour), K1 (6 hours), K2 (12 hours), dan K3 (18 hours).The second factor are the application of NPKMg fertilizer (15:15:6:4) in 4 stages:which are: P0 (0 g), P1 (7 g), P2 (14 g), P3 (21 g). The soaking of cocoa seeds incoconut water has significant effect on plant height and number of leaves.Interaction between soaking of cocoa seeds in coconut water and NPKMgfertilizer application has no significant effect on all parameters.Key words : coconut water, NPKMg fertilizer, cocoa, growth and production

EFEKTIVITAS Aspergillus niger DAN Penicillium sp. DALAM MENINGKATKAN KETERSEDIAAN FOSFAT DAN PERTUMBUHAN TANAMAN JAGUNG PADA TANAH ANDISO Putri Juli Artha; Hardy Guchi Hardy Guchi; Posma Marbun Posma Marbun
Jurnal Agroekoteknologi Vol 1, No 4 (2013)
Publisher : Universitas Sumatera Utara

This research topic is the effectiveness of Aspergillus niger and Penicillium sp. in increasingphosphate and growth of corn on Andisol. The objective is to compare the effect of Aspergillusniger application with Penicillium sp. in increasing phosphate and corn growth on Andisol.Andisols material was taken from Kuta Rakyat Village, Namanteran Subdistrict, Karo District. Thisresearch was conducted at green house, Soil Biology Laboratory, and Soil Fertility and ChemistryLaboratory. The design used was non factorial blocky randomized which consists of seventreatments and four replications, they are M0 (kontrol), MA1 (Aspergillus niger 8 mL), MA2(Aspergillus niger 17 mL), MA3 (Aspergillus niger 25 mL), MP4 (Penicillium sp. 10 mL), MP5(Penicillium sp. 18 mL), MP6 (Penicillium sp. 30 mL). Parameters measured in this experiment aresoil pH, soil available-P, plant P absorption, shoot dry weights, and root dry weights.The results of this research showed that the application of Aspergillus niger and Penicillium sp. nonsignificantly affected available P, P-uptake, soil pH, and shoot dry weights, but significantlyaffected root dry weights and diameter of stem.Keywords : aspergillus niger, penicillium sp., Andisols

DAMPAK DEBU VULKANIK LETUSAN GUNUNG SINABUNG TERHADAP KADAR Cu, Pb, DAN B TANAH DI KABUPATEN KARO Raja Forman Barasa; Abdul Rauf; Mariani Sembiring
Jurnal Agroekoteknologi Vol 1, No 4 (2013)
Publisher : Universitas Sumatera Utara

The Study of Effect Volcanic Ash Eruption of Sinabung Mountain on the Content of Copper, Lead,and Boron of Soils at Karo District. Have been done at six locations using Soils Survey Method onSeptember 2010 until March 2012. Each of site soil sampling were done by purposive sampling attwo depths (0-5 cm and 0-15 cm) with two replications. The results showed that at 0,5-15 mm ofthickness of volcanic ash containt at very low level Copper, content of Boron were moderate, high,and very high and content of Lead was at admitted level at 0-5 cm and 0-15 cm soil depth at somesites at Karo DistrictKeywords: volcanic ash, copper, lead, and boron

PENGGUNAAN PERANGKAP KUNING BERDASARKAN BENTUK DAN BEBERAPA KETINGGIAN PERANGKAP TERHADAP HAMA Liriomyza spp. (Diptera: Agromyzidae) PADA TANAMANBAWANG MERAH (Allium ascalonicum L.) Rio A A Sinubulan; Darma Bakti; Mena Uly Tarigan
Jurnal Agroekoteknologi Vol 1, No 4 (2013)
Publisher : Universitas Sumatera Utara

Yellow traps is one of mechanical control leaf miner (Liriomyza spp) on shallolt(Allium ascalonicum (L.). This study was conducted in Desa Batukarng located at the altitude of about1,100 meters above sea level.The purpose of this study was to fine out the influence of the use severalforms and altitude of yellow. Trap on Liriomiza spp ( leaf-slitting fly) as the pest on shallot(Allium ascalonicum (L.). This study employed the Non-Factorilal Group Random Design Methodwith 7 treatments and 3 repetitions by using yellow square and cylindrical trap set at the latitude of10,30,50 cm above the ground. The result of this study showed that the average number of pets trappedhad a significant influence on the population of Liriomyza spp ( leaf-slitting fly) at shallot plantingground of square treatment with height of 10 cm. The form and height of trap had a very significantinfluence on percentage of Liriomyza spp attack to the square treatment with the height of 10 cm.Based on the result of the study, it is found out the square trap with the height of 10 cm is moreeffective to control the population of Liriomyza spp.Key words: shallot , leaf- slitting, yellow trap.

PEMETAAN STATUS UNSUR HARA C-ORGANIK DAN NITROGEN DI PERKEBUN NANAS (Ananas comosus L. Merr) RAKYAT DESA PANRIBUAN KECAMATAN DOLOK SILAU KABUPATEN Rosmenda Ginting Rosmenda Ginting; Razali Razali; Zulkifli Nasution
Jurnal Agroekoteknologi Vol 1, No 4 (2013)
Publisher : Universitas Sumatera Utara

ROSMENDA GINTING:Mapping of Nitrogen and C-Orgnic status on Pineapple(Ananas comosus L. Merr) plantations owned by people at the village of Panribuan Subdistrict ofDolok Silau Simalungun District superinted by Ir. Razali, MP. And Prof.Ir. Zulkifli Nasution,M. Sc.,Ph.D. This research purpose to make a mapping of Nitrogen and C-Orgnic status onPineapple plantations owned by people at the village of Panribuan Subdistrict of Dolok SilauSimalungun District The research start to do on October 2012 until January 2013. Method of takingsample uses the free method grid survey with detail scale and use correlation method to analysisdata, with interpretating in mapping Nitrogen and C-Organic. Parameter that analysis in laboratoryis Nitrogen and C-Orgnic status. The result of research showing that status Nitrogen devided by 1status such as; medium (35,44 ha), C-Organic devided by 4 status such as ; Low (0,19 ha), Medium(1,01 ha), high (12,89 ha), and highest (21,35 ha).C/N devided by 3 status such as ; Low (1,95 ha),Medium (11,70 ha) and high (21,79 ha). From the analysis data using correlation method, knownthat the no effect on the production are Nitrogen and C-Organic but that effect are C/N.Key words: Mapping, Nitrogen, C-Organic and C/N

KAJIAN TOTAL BIOMASSA RERUMPUTAN DAN PENGARUHNYA TERHADAP TATA AIR TANAH DI DAERAH TANGKAPAN AIR DANAU TOBA. STUDI KASUS DI KECAMATAN SILAHISABUNGAN KABUPATEN DAIRI Sahala M Manurung; Abdul Rauf; Razali Razali
Jurnal Agroekoteknologi Vol 1, No 4 (2013)
Publisher : Universitas Sumatera Utara

The study on the total of biomass of grasses and it’s influences on soil moisture was conducted atSilahisabungan Subdistrict Dairi District, from November 2011 until February 2012. The objectiveof this research was to evaluate the effect of grasses to soil mositure. This study used survey methodwith purposive sampling. The result of this research showed that grass vegetation with rathersloping class total biomass 10,6 ton/ha, carbon reserve 5,3 ton/ha, field capacity 63,4 %, permanentwilting point 1,3 %, water content 62,0 % and permeability 7,5 cm/hours. In the undulating slopestotal biomass 7,1 ton/ha, carbon reserve 3,55 ton/ha, field capacity 51,6 %, permanent wiltingpoint 2,4 %, water content 49,2 % and permeability 7,6 cm/hours. In the rather steep slope totalbiomass 15,5 ton/ha, carbon reserve 7,75 ton/ha, field capacity 32,8 %, permanent wilting point 3,8%, water content 29,0 % and permeability 9,6 cm/hourd. In the forest vegetation with rather slopingclass, biomass total 7,54 ton/ha, carbon reserve 3,77 ton/ha, field capacity 150 %, permanent wiltingpoint 23,5 %, water content 126,5 % and permeability 10,3 cm/hours. In the undulating slopes totalbiomass 6,24 ton/ha, carbon reserve 3,12 ton/ha, field capacity 51,5 %, permanent wilting point 7,5%, water content 44 % and permeability 8,2 cm/hours. In the rather steep slope total biomass 8,86ton/ha, carbon reserve 4,43 ton/ha, field capacity 33,3 %, permanent wilting point 4,2 %, watercontent 29,2 % and permeability 11,25 cm/hours.Key words: biomass, soil moisture, toba lake water catchment area

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