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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 943 Documents

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PEMBERIAN ZEOLIT DAN PUPUK KALIUM UNTUK MENINGKATKAN KETERSEDIAAN HARA K DAN PERTUMBUHAN KEDELAI DI ENTISOL Surya Karto Lumban Gaol; Hamidah Hanum; Gantar Sitanggang
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

The Application of Zeolite and Potassium Fertilizer to Increase The Avaibility of PotassiumNutrient and Soy Growth in Entisols. Suvervised by Hamidah Hanum and Gantar Sitanggang.Theobjective of this research were: 1) determined of zeolite dosage that improved the soil chemistryproperties, 2) determinated zeolite and potassium fertilizer dosage that effected the avaibility ofpotassium and the soy growth in Entisols. The research consisted of two experiment, the first onewas the experiment of zeolite incubation, and second one was the experiment of zeolit andpotasium fertilizer. The design experiment of the first research was completely randomized designand the second one was block randomized design- factorial. The result showed that in the firstexperiment, zeolite wich incubation until 7.5 ton/hectare incerease CEC significanly, but didn’teffect the soil pH and K-exchangable. Besed the second experiment, it was know that theinteraction effect of zeolit and potasium fertilizer aplication increased potassium nutrient the plant,which the best treatment was zeolite aplication 5 ton/ hectare and potasium fertilizer 150 kg/hectare.Key words: : Entisols, Zeolite, KCl, soy growth

PENGARUH BEBERAPA INSEKTISIDA TERHADAP HAMA Lamprosema indicata F. DAN Spodoptera litura F. PADA TANAMAN KEDELAI (Glycine max (L) MERRIL.) Rotua Maryance Gultom; Yuswani Pangestiningsih; Lahmuddin Lubis
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

Rotua Maryance Gultom, “The Influenced some Insecticide on Soybean (Glycine max (L) Merril.)Pest Lamprosema indicata F. and Spodoptera litura F. in the field”. The objectives of the researchwere to study the effect of some Insecticide to Soybean (Glycine max (L) Merril.) pest Lamprosemaindicata F. dan Spodoptera litura F. The research was held at Telaga Sari Village, DevelopmentTanjung Morawa, Medan, North Sumatera from July until September 2013. The method used NonFactorial Randomized Group Design, consist of 7 treatments and 3 repetable that is control, papayaseed, indian mulberry seed seed, mahogany seed, Bacillus thuringiensis, Beauveriabassiana, and dimetoat. The results showed that the observated in 43 days after growth, dimetoatinsecticide and papaya seed insecticide effectived aplicable to Lamprosema indicata F. (12.98%)and (23.37%), with total larvae 1.34 dan 1.44. but for Spodoptera litura F. mahogany seedinsecticide is effectived (29.42%).Keywords : Soybean, Lamprosema indicata, Spodoptera litura

KADAR N, P DAN K TANAH PADA TANAMAN KELAPA SAWIT MENGHASILKAN DENGAN BERBAGAI KOMPOSISI PENANAMAN TANAMAN SELA DI BAWAH TEGAKAN Dina Arsyi Fazrin; Chairani Hanum; Irsal Irsal
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

NPK soil on oil palm produce plantation with increase diversity of vegetation. Soil fertility level onthe oil palm produce will be decreased, because there is no vegetation. Therefore, one the effort toincrease the soil productivity with planting of vegetation diversity under oil palm trees. Theresearch aimed to know NPK soil on oil palm produce plantation with increase diversity ofvegetation. The research was carried out in the PTPN III Kebun Bangun Simalungun regency,North Sumatera from September to Desember 2013. The experiment design was non factorialCompletely Randomized Design with 5 levels intercrop compotition, Arachis glabrata 100%,Stenotaphrum secundatum 100%, Arachis glabrata 50% + Stenotaphrum secundatum 50%, Arachisglabrata 75% + Stenotaphrum secundatum 25% dan Arachis glabrata 25% + Stenotaphrumsecundatum 75%. The analysis of data using the analysis variance and continued by DMRT. Theresults of this research showed that diversity compotitions intercrops given significant effect on thefresh weight leaf of Stenotaphrum secundatum 100%, the dry weight leaf of Stenotaphrumsecundatum 100%, the fresh weight root of Arachis glabrata 75%, the dry weight root of Arachisglabrata 75% and could increased the levels of soil phosphorus, but not significant effect on the oilpalm leaf chlorophyll, the intercrops leaf chlorophyll, the levels of soil nitrogen and potassium.Keywords: Intercrops, NPK soil, leaf chlorophyll

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

KOMPOSISI DAN KEPADATAN SEED BANK GULMA PADA BERBAGAI KEDALAMAN TANAH PERTANAMAN PALAWIJA BALAI BENIH INDUK TANJUNG SELAMAT Marshal P. Siahaan; Edison Purba; Teuku Irmansyah
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

Weed seeds in the soil per hectare can reach millions of amount and consists of many differentspecies. The depth of the weed seeds can be used as indicator of competitive level between crop andweeds. The research aims to determine the composition and density of seed bank at various level ofsoil depths at “ Balai Benih Palawija ” Tanjung Selamat North Sumatra. Soil Samples warecollected from four soil depths, namely: 0-5 cm, 5-10 cm, 10-15 cm,15-20 cm using metal pipe withdiameter of 3 cm. The parameters measured were the number of weeds that grow by the depth ofsoil, weed composition (%) per depth of soil and weeds growing time per depth of soil.From resultshowed that the highest density of weed seed bank is found at the depth of 0 – 5 cm. Weedcomposition dominated ( 68.9 % ) by broadleaf weeds. There are differences in the composition anddensity of the real seed bank at different depths in the soil in the field area of Balai Benih IndukTanjung Selamat. Composition and density of weed tends to be lower in deeper soil depths.Keywords: seed bank, depth of soil and crops planting area

PENGARUH TEKSTUR BUTIRAN PADA BEBERAPA KOMODITAS TERHADAP JUMLAH IMAGO HAMA Sitophylus oryzae L. (Coleoptera:Curculionidae) DI LABORATORIUM Sri Wulandari; Syahrial Oemry; Yuswani Pangestiningsih
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

The effect of grain texture on several comodities to adult of Sitophilus oryzae L. (Coleoptera:Curculionidae) in laboratory” supervised by Syahrial Oemry and Yuswani Pengestiningsih. Thisreseach aims to know the effect of grain texture on several comodities to adult of S. oryzae. Thiswas done in Laboratory of Perum Bulog Kantor Divre SUMUT Medan since January untill March2013. The method of this research was Completely Randomized Design Non Factorial with eighttreatments and three replicants.The results showed that treatment of P5 , P7 , P1 , P3 at 165.33 ,163.33 , 150.00 , 78.67 tail, in the treatment greatly affect breeding S. oryzae . Whereas the finetexture of flour showed a decrease in population size in the treatment P2, P4, P6, and P8 at 8.33,8.33, 10.00, 10.00 tail . Texture on the surface of each type of feed greatly affects the proliferationof pests powder S. oryzae .Keywords:Texture of media, S. oryzae.

SURVEI DAN PEMETAAN UNSUR HARA N, P, K, DAN pH TANAH PADA LAHAN SAWAH TADAH HUJAN DI DESA DURIAN KECAMATAN PANTAI LABU Sukma Triharto; Lahuddin Musa; Gantar Sitanggang
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

The objective of this research are to survey and to map the nutrients which is nitrogen (N),phosphate (P), and potassium (K) and the soil pH of rain fed lowland in Desa Durian KecamatanPantai Labu. The soil analysis was conducted in Research and Technology Laboratory inAgricultural Faculty of North Sumatra University on July – November 2013. The researchconducted the survey grid method semi-detailed lavel with 1 sample each 250 meter observationdensity. For the nutrient the researcher used Khejdhal method for soil total nitrogen, Extraction HCl25% for soil Potential phosphate, extraction 1 N NH4OAc pH 7 for soil potassium exchange, forsoil pH the researcher used electrometric method, and the result will be interpreted on nutrientstatus map. The result showed that total nitrogen is classified into two status, low nitrogen (582,048Ha) and medium nitrogen (167,952 Ha). Potential phosphate is classified into very low status (750Ha). And potassium exchange is classified into three status, medium potassium (137,202 Ha), highpotassium (515,303 Ha) and very high potassium (97,495 Ha). Soil pH classified into aciditytendency.Key Words: Soil survey, nutrient status mapping, rain fed lowland.

PENYAKIT LAYU FUSARIUM (Fusarium oxysporum f.sp. cubense (E.F.Smith) Synd. & Hans.) PADA TANAMAN PISANG (Musa spp.) DAN HUBUNGANNYA DENGAN KEBERADAAN NEMATODA Radopholus similis DI LAPANGAN Friska Erawati Sitepu; Lisnawita Lisnawita; Mukhtar Iskandar Pinem
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

Fusarium wilt (Fusarium oxysporum f.sp. cubense (E.F.Smith) Synd. & Hans.) (Foc) on banana(Musa spp.) and its related with Radopholus similis in the Field. This research aims to knowrelationships between R. similis with fusarium wilt in the field. This research was conducted byusing survey method. Samples were taken from Kampung Susuk, Pancing and Sari Rejo in Medandistrict. Tanjung Slamat and Sibiru-biru in Deli Serdang district. Marjanji Pisang, Mekarsari andSimpang Raya in Simalungun district. The result showed that the highest disease incident found atSibiru-biru village Deli Serdang districk (64.45%), R.similis populations was 28,7 and the numberof fusarium propaguls was 354. Meanhwile, the lowest disease incident found at Simpang RayaSimalingun district (10%), R.similis populations was 7,4 and the number of fusarium propagulswas 82. Fusarium oxysporum f.sp. cubense has positive corelation with R.similis in fields.Keywords: Fusarium oxysporum f.sp. cubense, Radopholus similis, banana

PERTUMBUHAN BIBIT KELAPA SAWIT ( Elaeis guineensis Jacq.) DENGAN MENGGUNAKAN MEDIA SEKAM PADI DAN FREKUENSI PENYIRAMAN DI MAIN NURSERY Hermanto Hermanto; Ferry Ezra T. Sitepu; Jonatan Ginting
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

The growth of oil palm seedlings (Elaeis guineensis Jacq.) by the application of rice husk andfrequency of watering in the main nursery. This research aims to study aimed to determine thegrowth of oil palm seedlings to rice husk and watering frequency on the main nursery. This researchwas conducted in Greenhouses in the Faculty of Agriculture, University of North Sumatera, Medanwith ± 25 m altitude above sea level in January 2013 to April 2013 using a factorial randomizedblock design with two factors: Media planting rice husk (0:0, 2: 1, 1:1, 1:2) and watering frequency(1, 2, 3 days) parameters measured were plant height, stem diameter, number of leaves, total leafarea, fresh weight of seedlings, seedling dry weight. The results showed that treatment of rice huskgrowing media influence is not obvious to all treatment parameters. Watering frequency treatmentssignificantly affected stem diameter parameter 2 and 6 MST with the highest yield obtained in thetreatment of the frequency of watering every other day. Both treatment interaction effect was notsignificant on all treatments.Keywords: palm oil, rice husk, watering

DINAMIKA N-NH4 DAN N-NO3 AKIBAT PEMBERIAN PUPUK UREA DAN KAPUR CaCO3 PADA TANAH INCEPTISOL KWALA BEKALA DAN KAITANNYA TERHADAP PERTUMBUHAN TANAMAN JAGUNG Abdul Rasyid B Damanik; Hamidah Hanum; Sarifuddin Sarifuddin
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

The objective of this research were to determine the effect of urea fertilizer and lime-CaCO3applications and its interaction on the dynamics of N-NH4 and N-NO3 and changes in soil pH andgrowth of maize in Inceptisols taken from Kwala Bekala. This research was conducted in thegreenhouse, Chemistry and Soil Fertility Laboratory, at the Faculty of Agriculture, University ofNorth Sumatra, Medan. This study used a randomized block design (RBD) factorial consisting oftwo factors. The first factor was urea (U) which was composed of doses 0, 75, 150 and 225 kg N/haand the second factor was lime-CaCO3 (K) which was composed of doses 0, 2.032, 4.064, 6.096tons CaCO3/ha. The results showed that the application of urea fertilizer, lime-CaCO3 andinteractions increased N-NH4 in the first week and then decreased until the sixth week andincreased the N-NO3 until the fifth week and raised the soil pH in the first and second week thendecreased until the sixth week. The applications of doses urea fertilizer decreased plant height, stemdiameter, shoot dry weight and root dry weight. The application of lime-CaCO3 decreased thegrowth of the maize except the concentration of plant nitrogen. The interaction of urea fertilizer andlime-CaCO3 decreased stem diameter and shoot dry weight.Keywords : Inceptisols, Urea Fertilizer, Lime CaCO3, N-NH4 and N-NO3

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