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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

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.

POTENSI JAMUR ENDOFIT ASAL CABAI SEBAGAI AGENS HAYATI UNTUK MENGENDALIKAN LAYU FUSARIUM (Fusarium oxysporum) PADA CABAI DAN INTERAKSINYA Sri Endah Nurzannah; Lisnawita Lisnawita; Darma Bakti
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

This research aims to find endophytic fungi which potency as biocontrol agents to against Fusariumoxysporum on chili and their interaction. The research was conducted at Plant Disease Laboratory,Agroecotechnology Program Study, Faculty of Agriculture, University of Sumatera Utara andgreenhouse of plant quarantine, Medan from May to August 2013. It was done by using CompletelyRandomized Design (CRD) Non Factorial with fourteen treatments and three replications. Theresults showed all the endophytic fungi used (Rhizopus sp., Penicillium sp., Rhizoctonia sp.,Aspergillus sp., Hormiscium sp., Geotrichum sp.) potential as biological agents to control fusariumwilt on chilli. The best results obtained on Penicillium sp. with disease severity was 2.78% in thegreenhouse test . Penicillium sp. also able to improve plant growth with plant height 29.40 cm.Key words : chilli, Fusarium oxysporum, endophytic fungi, interaction

PENGARUH KONSENTRASI KOLKHISIN TERHADAP PERTUMBUHAN DAN PRODUKSI KACANG HIJAU (Vigna radiata L.) Eka Juliyanti Sinaga; Eva Sartini Bayu; Hasmawi Hasmawi Hasyim
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

The Effect of Cholchisine Consentration to Growth and Produduction Green Beans (Vignaradiata L.) supervised by EVA SARTINI BAYU and HASMAWI HASYIM. One of thebreeding program that can be used to developed new varieties by using breeding mutation thatusing by colchisine consentration. The experiment had been conducted at Tumpatan NibungBatangkuis, Deli Serdang, Sumatera Utara (± 25 metres asl) during March until Juny 2012nd byusing randomized block design that were K0 (0%); K1 (0,04 %); K2 (0,08); K3 (0,12%); K4(0,16%) and then continued with Duncan's Multiple Range Test (DMRT). The parameters weregermination percentage, plant height, leaf numbers, flower ages, weight of pods dry ,number ofpods containing, number of seeds in each pods and 100 seeds weight. The result showed thatapplication colchisin significantly effected on growths: plant height and number of leafs, andalso production parameters such as: flower ages, weight of pods dry, number of pods containing,and number of seeds in each pods.Keywords: green beans, cholchisine

PENGARUH KONSENTRASI KOLKHISIN TERHADAP PERTUMBUHAN DAN PRODUKSI KACANG HIJAU (Vigna radiata L.) Sinaga, Eka Juliyanti; Bayu, Eva Sartini; Hasmawi Hasyim, Hasmawi
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jaet.v2i3.7545

The Effect of Cholchisine Consentration to Growth and Produduction Green Beans (Vignaradiata L.) supervised by EVA SARTINI BAYU and HASMAWI HASYIM. One of thebreeding program that can be used to developed new varieties by using breeding mutation thatusing by colchisine consentration. The experiment had been conducted at Tumpatan NibungBatangkuis, Deli Serdang, Sumatera Utara (± 25 metres asl) during March until Juny 2012nd byusing randomized block design that were K0 (0%); K1 (0,04 %); K2 (0,08); K3 (0,12%); K4(0,16%) and then continued with Duncan's Multiple Range Test (DMRT). The parameters weregermination percentage, plant height, leaf numbers, flower ages, weight of pods dry ,number ofpods containing, number of seeds in each pods and 100 seeds weight. The result showed thatapplication colchisin significantly effected on growths: plant height and number of leafs, andalso production parameters such as: flower ages, weight of pods dry, number of pods containing,and number of seeds in each pods.Keywords: green beans, cholchisine

KAJIAN P-TERSEDIA PADA TANAH SAWAH SULFAT MASAM POTENSIAL Achmad Hambali Nasution; Fauzi Fauzi; Lahuddin Musa
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

The research was conducted to examine P-available of paddy soil potential of acid sulfate withBray II, Truog and Olsen. The research held in Seed Technology Laboratory (seeding), green houseand also in Research and Technology Laboratory Agriculture Faculty University of SumateraUtara. The research used non factorial Randomized Block Design with 3 repetition, which as mainfactor is the giving of Natural Phosphate with 9 kind of dosages, that is: 0, 50, 100, 150, 200, 250,300, 350, and 400 ppm. The giving of Natural Phosphate was significant to the phosphorus sorptionwith the best dosage is P7 (350 ppm) and pH with the best dosage is P8 (400 ppm). The examiningof P-available from the giving of natural phosphate results that the value of P-available by usingBray II and Truog method was higher than the value of P-available by using Olsen method, andthere is no appropriate value of P critical limit for each method.Keywords: P-Available, acid sulfate soil, potential

PENGARUH PEMBERIAN FOSFAT ALAM DAN BAHAN ORGANIK TERHADAP SIFAT KIMIA TANAH, PERTUMBUHAN DAN PRODUKSI PADI (Oryza sativa L.) PADA TANAH SULFAT MASAM POTENSIAL Iman Saleh Batubara; Fauzi Fauzi; Kemala Sari Lubis
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

This research aims to find out the influence of application organic matter and rock phosphate toimprove soil chemical characteristic, growth and production of rice plant in acid sulphate soils, it isrelated to acid sulphate soils case, such as low pH, high iron (Fe2+) making less production. It isconducted in Faculty of Agriculturegreenhouses, University of North Sumatra, using a randomizedblock design factorial, with 2 factors; organic matter (B), B0 =(0 g /pot); B1 = (40 g straw /pot); B2= (80 g straw/pot); B3 = (40 g cow’s manure/pot); B4 = (80 g cow’s manure/pot); B5 = (26,7 gstraw + 53,3 g cow’s manure/pot) and rock phosphate (P), P0 = (0 g /pot); P1 = (0,64 g rockphosphate /pot); P2 = (1,28 g rock phosphate /pot). The measured parameters were pH, C-organic,P-avaliable, Fe2+, plant height, maximum seedlings and weight of dried grains. The results showedthat organic matter application significantly affected in increasing pH, P-avaliable,maximumseedlings, plant height, weight of dried grains and decreasing Fe2+at final vegetative phase. Rockphosphate application significantly affected in increasing pH, P-avaliable, weight of dried grainsand decreasing Fe2+at final vegetative phase. Combination of the two factors significantly affectedin increasing pH, P-avaliable, maximum seedlings, plant height, weight of dried grains anddecreasing Fe2+at final vegetative phase.Key words: acid sulphate soils, rice plant, organic matter, rock phosphate

PEMANFAATAN DUA JENIS KOMPOS GANGGANG COKLAT (Sargassum polycystum) DALAM MENINGKATKAN KESUBURAN TANAH ULTISOL SERTA PRODUKSI TANAMAN SAWI (Brassica juncea L.) Topan Radika Pranata Siregar; Alida Lubis; Supriadi Supriadi
Jurnal Agroekoteknologi Vol 2, No 3 (2014)
Publisher : Universitas Sumatera Utara

This reseach aimed to determines differences ability between two types of the brown algaecompost increase fertility of Ultisol and mustard production. This research was conducted inCompos Centre, Gauze House, Laboratory of Chemistry And Soil Fertility ,Laboratory of Researchand Technology Agriculture Faculty, University of North Sumatera, Medan in March-October2013. The method used non-factorial randomized block design consisting of 11 treatments with 3replications. R0 (control), R1, R2, R3, R4, and R5 with application of 50 g, 100 g, 150 g, 200 g, and250 g brown algae compost respectively, R6, R7, R8, R9, dan R10 with application of 50 g, 100 g,150 g, 200 g, and 250 g brown algae add chicken dirt compost respectively.The results showed thatapplication of two types compost able to increase the pH, C-organic, N-total, K-exchange in thesoil as well as increase the plant height, plant fresh weight, plant dry weight and root dry weight. Atparameters of soil pH, the K-exchange soil, application of brown algae compost significantlydifferent with brown algae added chicke dirt compost. The best dosage of brown algae add chickendirt compost 150 g /polybag for the K-exchange soil and soil pH.Keywords : The brown algae compost, chicken dirt, mustard.

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