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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 39 Documents

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Search results for , issue "Vol 3, No 3 (2015)" : 39 Documents clear

Tanggap Hasil Biji Bawang Merah Samosir aksesi Sagala Terhadap Konsentrasi GA3 dan Dosis Boron di Dataran Tinggi Samosir Fajar Yandi Siahaan; Toga Simanungkalit; Mariati Mariati
Jurnal Agroekoteknologi Vol 3, No 3 (2015)
Publisher : Universitas Sumatera Utara

The aim of the research was to identify the influence of GA3 Concentration and Dose of Boron on the seed yield of Samosir Shallot Sagala accesion. The research was conducted at Hatoguan Village, Subdistrict Palipi, Samosir, began from February until July 2014, using factorial randomized block design with two factors, replicated three times. The first factor was GA3 concentration (0, 50, 100, 150, 200 and 250 ppm) and the second was dose of boron (0, 1.5, 3 and 4.5 kg/ha). Parameters observed were percentage of flowering plants per plot, umbels number per plot, seeds weight per umbel and seeds weight per plot. The results showed that the percentage of flowering plants per plot was significantly affected by GA3 concentration, and seed weight per umbel by dose of boron. The highest percentage of flowering plants per plot was 41,27% produced by G4 (200 ppm GA3), and the corelation between dose of boron and seed weight per umbel showed positive linear regression. However all other parameters were not significantly affected by both treatments.Kata kunci : GA3 Concentration, Dose of Boron, Shallot

Respons Pembungaan dan Hasil Biji Bawang Merah Terhadap Aplikasi GA3 dan Fosfor Eric Pandiangan; Mariati Mariati; Jonis Ginting
Jurnal Agroekoteknologi Vol 3, No 3 (2015)
Publisher : Universitas Sumatera Utara

Penelitian ini bertujuan untuk menganalisis pengaruh ZPT GA3 dan pemberian pupuk fosfor terhadap pembungaan dan hasil biji bawang merah. Penelitian ini dilaksanakan di Desa Hatoguan, Kecamatan Palipi, Kabupaten Samosir, Provinsi Sumatera Utara dengan ketinggian tempat + 930 meter dpl yang dimulai bulan Februari sampai Juli 2014 dengan menggunakan Rancangan Acak Kelompok Faktorial dengan 2 faktor perlakuan dan 3 ulangan, yaitu konsentrasi GA3 (0, 25 ppm, 50 ppm, 75 ppm dan 100 ppm) dan dosis pupuk SP 36 (0; 10 g/plot; 20 g/plot dan 30 g/plot Hasil penelitian menunjukkan bahwaterdapat interaksi antara konsentrasi GA3 dan dosis pupuk SP 36 yang berpengaruh nyata terhadap persentase tanaman berbunga per plot dan jumlah umbel per sampel dengan kombinasi perlakuan terbaik pada G3P2 (75 ppm GA3 dan 280 kg/ha SP 36) yang menghasilkan persentase tanaman berbunga per plot tertinggi (24%) dan jumlah umbel per sampel terbanyak (1,27 umbel). Sedangkan perlakuan GA3 dan pupuk SP 36 tidak berpengaruh nyata terhadap parameter lainnya.Kata kunci :GA3, pupuk SP 36, bawang merah.

Dampak Ketebalan Abu Vulkanik Erupsi Gunung Sinabung Terhadap Sifat Biologi Tanah Di Kecamatan Naman Teran Kabupaten Karo Beatrix I. L. J. Sinaga; Mariani Sembiring; Alida Lubis
Jurnal Agroekoteknologi Vol 3, No 3 (2015)
Publisher : Universitas Sumatera Utara

Penelitian ini dilakukan untuk mengetahui dampak ketebalan abu vulkanik pada erupsi Gunung Sinabung terhadap sifat biologi tanah di Kecamatan Naman Teran, Kabupaten Karo.Penelitian dilaksanakan di Laboratorium Biologi Tanah Fakultas Pertanian, Universitas Sumatera Utara, Medan dan di Balai Pengkajian Tanaman Pertanian (BPTP), Medan pada bulan Mei-September 2014.Penelitian ini dilakukan dengan melakukan pengamatan berdasarkan dengan ketebalan abu yang ada di lapangan dengan pengambilan sampel tanah diambil di daerah kecamatan Naman Teran, Kabupaten Karo dan dilakukan sebanyak 2 kali yaitu pada bulan April 2014 dan Juli 2014 dengan pengambilan sampel berdasarkan ketebalan abu yang tidak terkena A0 (tanpa), A1 (≤2cm), A2 (2-8 cm) dan A3 (>8cm).Adapun parameter yang diamati adalah pH tanah dan pengukuran aktivitas mikroorganisme tanah (respirasi).Hasil penelitian menunjukkan bahwa pH tanah dan pengukuran aktivitas mikroorganisme tanah (respirasi) bahwa semakin tebal abu yang menutupi permukaan tanah maka nilai pH dan respirasinya akan menurun.Kata kunci : abu vulkanik, ketebalan abu, sifat biologi tanah.

Eksplorasi dan Potensi Jamur Pelarut Fosfat pada Andisol Terkena Dampak Erupsi Gunung Sinabung dengan Beberapa Ketebalan Abu di Kecamatan Naman Teran Kabupaten Karo Viky Fatmala; Mariani Sembiring; Jamilah Jamilah
Jurnal Agroekoteknologi Vol 3, No 3 (2015)
Publisher : Universitas Sumatera Utara

This research was conducted to determine the type of Phosphate Solubilizing Fungi (PSF) as a result from isolated Andisol in Naman Teran district Karo sub district that affected by the eruption of mount Sinabung with some ash thickness around 0 cm (not affected), >0 cm - <2 cm (thin), >2 cm - 8 cm (moderate) and >8 cm (thick), and to determine its ability to dissolve phosphate on solid media. Isolation and potential test on solid media using media Pikovskaya with phosphate source Ca3(PO4)2. Evaluates JPF potential qualitatively by measuring the holozone diameter using index values dissolution. The results were obtained 4 PSF genus found in Andisol’s soil affected by the eruption of mount Sinabung: Aspergillus sp., Trichoderma sp., Penicillium sp.1 and Penicillium sp. 2. PSF were able to survive up to a thickness of Asharound >8cm is Aspergillus sp. Based on the test results the potential of solid media Penicillium sp.2 has the best ability to dissolve phosphate.Keyword: phosphate, volcanic ash, phospate solubilizing fungi

Uji F1 dari Persilangan Genotip Antara Beberapa Varietas Kedelai (Glycine max L. Merril) Terhadap Tetua Masing-Masing Heri Arifianto; Diana Sofia Hanafiah; Emmy Harso Kardhinata
Jurnal Agroekoteknologi Vol 3, No 3 (2015)
Publisher : Universitas Sumatera Utara

This research aims to known inheritance soybean plant on F1 descent. The research was conducted at Agriculture Faculcity Universitas Sumatera Utara, Medan in June 2014 until February 2015. The research counducted in 2 phase. The first phase is crossing, are G1 (♀Detam II X ♂Anjasmoro), G2 (♀Anjasmoro X ♂Detam II), G3 (♀Grobogan X ♂Anjasmoro), G4 (♀Anjasmoro X ♂Grobogan), G5 (♀Grobogan X ♂Detam II) and G6 (♀Detam II X ♂Grobogan). The second phase is F1 test. The percentage of successfully are 32.22-46.45%. The highest result of crossing G1 and the lowest G4. G1 and G2 significantly different of flower age, plant height, number of seeds and pods with seed 1, number of seeds and pods with seed 2, number of seeds and pods with seed 3, number of pods containing, number of seed per plant, seed weight per plant and 100 seeds weight. G5 and G6 significantly different of flower age, harvesting time, primer branch number, number of seeds and pods with seed 2, number of seeds and pods with seed 3, number of pods containing, number of seed per plant and seed weight per plant. Difference between F1 and F1 reciprocal occur because of maternal inheritance inindividuals crossing result.Key words : crossing, Anjasmoro, Detam II, Grobogan, F1 test

Pertumbuhan dan Produksi Kacang Bogor (Vigna subterranea (L.) dengan Pemberian Pupuk P dan Arang Sekam Padi Rabani Rabani; Yaya Hasanah; Asil Barus
Jurnal Agroekoteknologi Vol 3, No 3 (2015)
Publisher : Universitas Sumatera Utara

Pemberian pupuk anorganik dan organik dapat menyediakan unsur hara yang dibutuhkan oleh tanaman kacang bogor seperti unsur hara P. Sebagian fosfor di dalam tanah umumnya tidak tersedia untuk tanaman. Salah satu bahan organik yang mampu melepaskan unsur hara P adalah arang sekam padi. Penelitian ini bertujuan untuk mengetahui respons pertumbuhan dan produksi kacang bogor terhadap pemberian pupuk P dan arang sekam padi. Penelitian dilaksanakan di lahan Fakultas Pertanian Universitas Sumatera pada Juli – Oktober 2014. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) faktorial dengan 2 faktor dan 3 ulangan. Faktor pertama yaitu pemberian pupuk P dengan 4 taraf (0; 30; 60 dan 90 kg SP-36/ha) dan faktor kedua yaitu komposisi top soil dan arang sekam padi dengan 4 taraf (1:0; 1:1; 1:2 dan 2:1). Data yang diperoleh dianalisis dengan menggunakan sidik ragam dan dilanjutkan dengan uji jarak berganda Duncan. Peubah amatan yaitu jumlah cabang, umur berbunga, bobot polong, dan bobot biji. Hasil analisis data menunjukkan bahwa pemberian pupuk P berpengaruh dalam meningkatkan jumlah cabang, umur berbunga, bobot polong dan bobot biji. Pemberian arang sekam padi meningkatkan jumlah cabang Interaksi antara pemberian pupuk P dan arang sekam padi berpengaruh tidak nyata terhadap semua peubah amatan.Kata kunci : pupuk P, arang sekam padi, kacang bogor

Pengaruh Pemberian Pupuk Hayati Cair dan Pupuk NPK Terhadap Pertumbuhan Bibit Kelapa Sawit di Pre Nursery Ebet Stephanus Romunta Sinulingga; Jonatan Ginting; T. Sabrina
Jurnal Agroekoteknologi Vol 3, No 3 (2015)
Publisher : Universitas Sumatera Utara

The aim of the research was to determine the influence of giving liquid biofertilizer and compound fertilizer NPK on the growth of oil palm seedling in pre nursery. The research had been conducted on the land of Agriculture Faculty, Sumatera Utara University, Medan (42 m asl) in February until June 2014, by using Randomized Block Design with two factors, i.e. liquid biofertilizer (0, 5, 10, 15 ml/litre of solvent) and NPK compound fertilizer (0; 2,25; 4,5; 6,75 g/seed). Parameters measured were plant’s height, steem’s diameter, number of leaves, total leaf area, wet shoot weight, wet root weight, dry shoot weight, dry root weight, and the ratio of shoot and root. The results showed that the application liquid biofertilizer with 5 ml/litre of water is better than 0, 10, and 15 ml/litre of water at the same time the application with 2,25 g/seed is better than 0; 4,5; and 6,75 g/seed.Key words : liquid biofertilizer, NPK compound fertilizer, oil palm.

Survey dan Pemetaan Status Hara-P di Kecamatan Kabanjahe Kabupaten Karo Rino Ginting S; Mukhlis Mukhlis; Gantar Sitanggang
Jurnal Agroekoteknologi Vol 3, No 3 (2015)
Publisher : Universitas Sumatera Utara

The research of survey and mapping nutriens status of P2O5 at Kabanjahe sub-district, regensi Karo, aims to determine the spread of the availability of P2O5 in agricultural areas for plants. The survey was conducted using a free grid survey methode with with density 6.25 ha each of the grid and analysis of P2O5 content of 25% HCl extract. Analysis of the levels of P2O5 done in the laboratory of Research and Technology of the North Sumatra University, Medan. The results showed that the P2O5 classified into 5 criteria such as; very low 18.74 ha, 10 ha Low, Medium 70 ha, 140 ha of high and very high 343.75 ha. From the results obtained by laboratory analysis of soil samples with the highest P2O5 content is 2,376 % and lowest content is 0,016 %.Key words: survey, P status, mapping P2O5

Tanggap Pertumbuhan dan Produksi Sawi (Brassica juncea L.) pada Pemberian Pupuk Cair Muhammad Rizky Andry; Ratna Rosanty lahay; Revandi I M Damanik
Jurnal Agroekoteknologi Vol 3, No 3 (2015)
Publisher : Universitas Sumatera Utara

The objective of this research was acquired of effect on addition of liquid fertilizer of growth and production of mustard greens. Therefor, research has been conducted at experimental field of Agriculture USU (± 25 m asl.) in August-September 2014 using a randomized block design with one factor. that was addition of liquid fertilizer consist of control, basic fertilizer (urea, SP36, KCl), organic liquid fertilizer (1, 2 and 3 ml/l water per plant) and anorganic liquid fertilizer (1, 5, 3, and 4,5 ml/l water per plant). The results showed that 2 and 3 weeks after planting (MST) of plant height, 2, 3, and 5 MST of leaf total, fresh root weight, sell fresh weight be significantly different of addition liquid fertilizer. We recommend that basic fertilizer should be given on mustard greens cultivation, because the results on growth and production of mustard greens was well.Keywords : Mustard Greens, Fertilizer, Liquid Fertilizer

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