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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

Arjuna Subject : -

Articles 943 Documents

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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.

Pengaruh Bentuk dan Ketinggian Perangkap Sticky Trap Kuning Terhadap Lalat Buah (Bactrocera spp.) (Diptera:Tephritidae) Pada TanamanTomat (Solanum lypersicum mill.) di Dataran Rendah Chornelius Karo-Karo; Yuswani Pangestiningsih; Lisnawita Lisnawita
Jurnal Agroekoteknologi Vol 3, No 1 (2015)
Publisher : Universitas Sumatera Utara

The aim of this research was to get the best shape and elevation of yellow sticky trap to controlfruit fly. Research was conducted from September 2013 until November 2013 at Kuta Tualahvillage, Kecamatan Kutalimbaru, Kabupaten Deli Serdang, North Sumatera on 57 meter above sealevel. The research was conducted using Randomized Block Design (RAK) factorial with twofactors and 5 replications. The first factor was U1= 100 cm, U2= 150 and U3= 200 cm and thesecond factor was T1= circle, T2= square, T3= sylinde. The results showed that circle yellowsticky trap with 150 cm elevation more effective for trapping male and female fruit fly than theothers. The highest number of larvae in tomatoes fruit was founded at square yellow sticky trapwith 100 cm elevations. Highest tomatoes production (21.86 ton / ha) was founded at circle yellowsticky trap with 150 cm elevation, meanwhile the lowest (3.70 ton / ha) was founded at squareyellow sticky trap with 100 cm elevation.Key words: Bactrocera spp., fruit fly, tomato, trap

Pemanfaatan Mikofer pada Kelapa Sawit dengan Interval Penyiraman di Pembibitan Sakra Damanik; Irsal Irsal; Yaya Hasanah
Jurnal Agroekoteknologi Vol 3, No 1 (2015)
Publisher : Universitas Sumatera Utara

The availability of water that is limited for watering during the dry season, especially in the largearea of oil palm nursery can be overcome by saving the water, which, in this research is the intervalwatering. Another alternative that can be applied is the utilization of mycofer. The research wasconducted in the greenhouse of the Faculty of Agriculture University of North Sumatra fromSeptember 2013 to January 2014. Research design was factorial randomized block design with twofactors : mycofer application (0, 5, 10, 15 g/seedling) and the interval watering (every day, threedays and five days). Parameters observed were percentage of root infection, leaf area total, dryweight of shoot, dry weight of root, and water use efficiency (WUE). The result showed thatmycofer application significantly affected the percentage of root infection which the highestinfection on 18th week after application was 28,89% as the result of 10 grams mycofer application.There was no significant effect of both mycofer application and watering interval in leaf area total,dry weight of shoot and root. Watering interval significantly affected the WUE which the highestWUE was 13,69% as the result of five days watering interval. Moreover, the watering interval forfive days in the research didn’t impair the oil palm growth within 18 weeks. The interaction had nosignificant effect on all of the parameters observed.Keywords: mycofer, watering interval, oil palm

Respons Pertumbuhan dan Produksi Kacang Tanah (Arachis hypogaea L.) dengan Pemberian Pupuk Kandang Ayam dan Pupuk NPK (15:15:15) William Josua Damanik; Rosita Sipayung; Haryati Haryati
Jurnal Agroekoteknologi Vol 3, No 1 (2015)
Publisher : Universitas Sumatera Utara

For the last six years in a row, the yield of peanut in Indonesia had encountered the decreasingyield problem. In case of that, the using chicken manure as organic material and NPK (15:15:15)fertilizer were aimed to increase growth and yield of peanut. The research has been conducted at theexperimental fields of Agriculture Faculty, Universitas Sumatera Utara, Medan from October 2013until February 2014. This research used factorial randomized block design with two factors, i.e.doses of chicken manure (0; 25; 50; 75 g/polybag) and doses of NPK (15:15:15) fertilizer (0; 0,625;1,25; 1,875 g/polybag). Parameters observed were number of branches, flowering age, gynophoresformed, pods per sample, pods per plot, seed weight per sample, dry weight of 100 seeds, freshweight of biomass, and dry weight of biomass. The results showed that the treatment of usingchicken manure significantly influenced the parameters of branches, gynophores formed persample, pods per sample, pods per plot, seed weight per sample, wet weight biomass per sample anddry weight biomass per sample. The treatment of NPK (15:15:15) significantly influenced theflowering age and dry weight of 100 seeds. The interaction between the both of treatmentsignificantly influenced dry weight of 100 seeds.Keywords : peanut, chicken manure, NPK (15:15:15) fertilizer

Pengaruh Populasi Kacang Tanah (Arachis hypogaea L.) dan Jagung (Zea mays L.) terhadap Pertumbuhan dan Produksi Pada Sistem Pola Tumpang Sari Adria Sartika br Sembiring; Jonis Ginting; Ferry Ezra Sitepu
Jurnal Agroekoteknologi Vol 3, No 1 (2015)
Publisher : Universitas Sumatera Utara

The purpose of the study was to determine the effect of the number of peanut and corn population tothe growth and yield in intercropping pattern system. The research was conducted at LambarVillage Tigapanah District Karo Regency, North Sumatera with the height of ±1200metres abovesea level, began from November 2013 until May 2014. The research was arranged with arandomized block design with two factors. The first factor was peanut population (20x20 cm, 30x20cm, 40x20 cm, 50x20 cm) and the second was corn population (60x20 cm, 70x20 cm, 80x20 cm).The parameters observed were peanut height, number of peanut leaf, corn height, number of cornleaf, number of pod per sample, peanut production per plot, weight of 100 peanut grain, peanut leafarea index, wet weight of corn cob, dry weight of corn cob, and corn production per plot. Theresults showed that corn height, number of corn leaf, peanut production per plot, weight of 100peanut grain, wet weight of corn cob, and peanut leaf area index were significantly affected bypopulation of peanut. Population of corn significantly affected the wet weight of corn cob, dryweight of corn cob, and corn production per plot. Analysis of data showed that the interaction ofpeanut and corn population were founded and significantly affected the corn height, number of cornleaf, and weight of 100 peanut grain.Keywords : peanut, corn, population.

Pengaruh Nisbah Kelamin Parasitoid Cotesia flavipes Cam. (Hymenoptera : Braconidae) dan Ukuran Panjang Inang Chilo sacchariphagus Boj. (Lepidoptera : Crambidae) terhadap Fekunditas yang Dihasilkan di Laboratorium Andrico Tampubolon; Marhenit Marheni; Darma Bakti
Jurnal Agroekoteknologi Vol 3, No 1 (2015)
Publisher : Universitas Sumatera Utara

The objective of the research was to study the effect of sex ratio Cotesia flavipes and the length hostof C. sacchariphagus on the resulting fecundity. The research was conducted at the Laboratory ofSugarcane Research and Development Sei Semayang, Binjai, Medan, North Sumatera from Marchuntil May 2014. This method used Randomized Complete Design Factorial with two factors.The first factor was sex ratio of C. flavipes (0 male : 1 female ; 1 male : 1 female ;1 male : 2 females ; 1 male : 3 females ; 1 male : 4 females) and the second factor was size ofC. Sacchariphagus (<1.5 cm ; >1.5 cm - < 2.0 cm ; > 2.0 cm ) with three replications.The resultsshowed that the percentage of parasititation depend on host size of C. sacchariphagus. The highestpercentage of parasititation (40%) was on the big size of C. sacchariphagus (> 2.0 cm) and thelowest (0%) was on the small size of C. sacchariphagus (<1.5 cm). Sex ratio significantly effectedon the number of female C. flavipes. The highest number of female C. flavipes (13.11 head) on1 male : 4 females and the lowest (0 head) on 1 female : 0 male. Sex ratio of male and femalewas 2.48 : 1.Keywords : Cotesia flavipes, host size, sex ratio, Chilo sacchariphagus

Perubahan Sifat Kimia Inceptisol Melalui Aplikasi Bahan Humat Ekstrak Gambut Dengan Inkubasi Dua Minggu Jeni Swanda; Hamidah Hanum; Purba Marpaung
Jurnal Agroekoteknologi Vol 3, No 1 (2015)
Publisher : Universitas Sumatera Utara

The objective of this research was study of several dosages humic material from extract peat inimproving Inceptisol soil chemical characteristics .The soil sample using Inceptisol and humicmaterial from extract peat. It is conducted in Faculty of Agriculture greenhouses, University ofNorth Sumatra, using non-factorial randomized block design,the treatment of humic materialconsisted of 6 levels and 3 replications so there are 18 experimental units, namely : The treatment 0,200, 400, 600, 800 and 1000 ppm humic material. The measured parameters were pH (H2O), Corganic,P-available,Al-exchange, cation exchange capacity (CEC) and Al saturation. The result ofthis research showed that humic material application significantly affected in increasing pH and Corganik,but not significant effect on P-available,Al-exchange, CEC and Al saturation. The value ofsoil pH increasing from very acid to acid on dosages humic material 400 until 1000 ppm and thehighest increase of soil pH is 4.74 on dosages 1000 ppm. Humic material couldn’t improve otherssoil chemical characteristics. The value of P-available, C-organic, Al saturation is very low, andCEC is low.Key words: Inceptisols, humic material, pH, C-organik, P-avalaible,CEC and Al-exchange

Pengaruh Umur dan Waktu Inokulasi Parasitoid Xanthocampoplex sp. (Hymenoptera: Ichneumonidae) terhadap Jumlah Larva Chilo sacchariphagus Bojer (Lepidoptera: Crambidae) di Laboratorium The Influence of Age and Inoculation Time Parasitoids Xanthocampoplex s Luskino Silitonga; Maryani Cyccu Tobing; Lahmuddin Lubis
Jurnal Agroekoteknologi Vol 3, No 1 (2015)
Publisher : Universitas Sumatera Utara

Pengaruh Umur dan Waktu Inokulasi Parasitoid Xanthocampoplex sp. (Hymenoptera:Ichneumonidae) terhadap Jumlah Larva Chilo sacchariphagus Bojer(Lepidoptera: Crambidae) di LaboratoriumThe Influence of Age and Inoculation Time Parasitoids Xanthocampoplex sp. (Hymenoptera:Ichneumonidae) on Number of larvae Chilo sacchariphagus Bojer(Lepidoptera: Crambidae) in Laboratory

Pengaruh Lamanya Inokulasi Parasitoid Sturmiopsis inferens Town (Diptera: Tachinidae) terhadap Jumlah Inang Phragmatocia castaneae Hubner (Lepidoptera: Cossidae) di Laboratorium The Influence of Inoculation Periode Parasitoid Sturmiopsis inferens Town (Di Tetra Febryandi Sagala; Maryani Cyccu Tobing; Lisnawita Lisnawita
Jurnal Agroekoteknologi Vol 3, No 1 (2015)
Publisher : Universitas Sumatera Utara

The objectives of the research was to study the capability of S. inferens (Diptera: Tachinidae) afterinoculated on larvae P. castaneae Hubner (Lepidoptera: Cossidae) with different types of theinoculation period and larvae numbers. The research was conducted in Laboratory of SugarcaneResearch and Development Sei Semayang, Binjai, Medan, North Sumatera from November 2013until January 2014. The method used Randomized Complete Design with two factors and threereplications, the first factor was larvae number (30, 40, 50 larvae P. castaneae) and the secondfactor was inoculation period (25, 35, 45 minutes). The results showed that inoculation period,larvae numbers and interaction of both did not effected tobe become imago. Sex ratio of S. inferenseffected on progeny producted with male and female 1.1 : 1.0Keywords: inoculation, parasitoid, Sturmiopsis inferens, Phragmatocia castaneae.

Uji Efektivitas Termitisida Nabati Terhadap Mortaliatas Rayap (Coptotermes curvinagthus Holmgren) (Isoptera : Rhinotermitidae) di Laboratorium The Effectiveness of Botanical Termiticides on Mortality of Termites (Coptotermes Curvinagthus Holmgren) (Isopte Nova Kristina Hutabarat; Syahrial Oemry; Mukhtar Iskandar Pinem
Jurnal Agroekoteknologi Vol 3, No 1 (2015)
Publisher : Universitas Sumatera Utara

This research aims to determine the effetiviness of Botanical termiticide tuba root (Derris elliptica(Roxb) Benth) and citronella (Cymbopogon nardus L) of mortality of termites (Coptotermescurvinagthus Holmgren) in laboratory. This method uses Randomized Complete Design with twofactor : the first factor was concentration of termiticide (Control, Soluble of tuba root 200 g/ L water,Soluble of tuba root 300 g/ L water, Soluble of tuba root 200 g / L water, Soluble of citronella 300 g / Lwater, Soluble of citronella of 200 g / L water) and second factors was application technique (feedingand spraying).The result showed that concentration and application technique of termiticidesignificantly effected the mortality of termites. The highest mortality (83,86%) on soluble of tuba root300 gr / water and the lowest ( 0 %) on control. Mortality of termites on feeding application (66,77%)was higher than spraying application (56.86%)Keywords: Botanical Termiticides , Coptotermes Curvinagthus Holmgren, Mortality

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