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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 27 Documents

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Search results for , issue "Vol 4, No 3 (2016)" : 27 Documents clear

Evaluasi Sifat Fisik Tanah Terhadap Laju Infeksi Ganoderma di Perkebunan Kelapa Sawit (Studi Kasus : PT. PD. PATI) Kartika Utami; Supriadi Supriadi; Kemala Sari Lubis
Jurnal Agroekoteknologi Vol 4, No 3 (2016)
Publisher : Universitas Sumatera Utara

Penyakit busuk pangkal batang (Ganoderma sp.) menurunkan produktifitas kelapa sawit di perkebunan kelapa sawit PT. PD. PATI. Perbaikan kondisi lingkungan tanah perlu dilakukan agar wilayah perakaran hingga pangkal batang dapat terhindar dari penyakit ini. Penelitian ini bertujuan untuk mengevaluasi sifat fisik tanah antara lain persentase fraksi liat, fraksi pasir, kelembaban tanah, dan kandungan karbon organik tanah terhadap laju infeksi penyakit busuk pangkal batang. Penelitian dilakukan di perkebunan kelapa sawit PT.PD.PATI dengan metode survey. Sampel diambil dengan metode proportional purposive random sampling. Data diuji dengan asumsi data klasik, analisis korelasi dan analisis regresi. Hasil penelitian menunjukkan laju infeksi penyakit busuk pangkal batang dipengaruhi oleh kelembaban tanah tetapi tidak dipengaruhi oleh fraksi liat, debu dan kandungan karbon organik tanah.

Respons Pertumbuhan dan Produksi Kedelai (glycine max (L.)Merril) Terhadap Pemberian Biochar dan Pupuk Organik Cair muhammad habib sampurno; Yaya Hasanah; Asil Barus
Jurnal Agroekoteknologi Vol 4, No 3 (2016)
Publisher : Universitas Sumatera Utara

Kedelai merupakan bahan protein nabati dan komoditas penting Indonesia. Produksi kedelai nasional mengalami penurunan setiap tahunnya. Rendahnya produksi kedelai Indonesia salah satunya dikarenakan belum maksimalnya pengetahuan petani dalam penggunaan teknologi produksi yang mendukung pertanian berkelanjutan. Peningkatan kesadaran masyarakat untuk hidup sehat dan kembali ke alam meningkatkan pemberdayaan sistem pertanian organik. Tujuan penelitian yakni untuk mengetahui respons pertumbuhan dan produksi kedelai terhadap pemberian biochar dan pupuk organik cair. Penelitian dilaksanakan di Desa Namo Gajah, Kecamatan Medan Tuntungan pada Juni - Agustus 2015, menggunakan Rancangan Acak Kelompok Faktorial dengan dua faktor yaitu Biochar (0, 4, 8, 12 t/ha) dan Pupuk Organik Cair (20, 40, 60 ml/l). Peubah yang diamati adalah tinggi tanaman, diameter batang, total luas daun, bobot kering biji per tanaman, dan bobot kering biji per plot. Hasil penelitian menunjukkan bahwa pemberian biochar meningkatkan total luas daun 3,4 dan 6 MST dan bobot kering biji per plot. Pemberian pupuk organik cair meningkatkan jumlah diameter batang dan total luas daun 4 dan 6 MST.

Respons Pertumbuhan dan Produksi Kedelai (Glycine max (L.) Merril.) Terhadap Aplikasi Pupuk Hayati dan Tepung Cangkang Telur sri dora saragih; Yaya Hasanah; Eva Sartini Bayu
Jurnal Agroekoteknologi Vol 4, No 3 (2016)
Publisher : Universitas Sumatera Utara

Penelitian ini dilakukan di lahan percobaan Fakultas Pertanian Universitas Sumatera Utara yang berada ± 25 m dpl mulai Mei sampai Agustus 2015. Tujuan penelitian ini yaitu untuk mengetahui kemampuan pupuk hayati dan tepung cangkang telur dalam meningkatkan pertumbuhan dan produksi tanaman kedelai. Penelitian menggunakan Rancangan Acak Kelompok dengan 2 faktor perlakuan. Faktor pertama adalah pemberian pupuk hayati yaitu 0 ; 5 dan 10 g/kg benih dan faktor kedua tepung cangkang telur yaitu 0 ; 25 ; 50 dan 75 g/polibeg. Hasil penelitian menunjukkan bahwa pemberian pupuk hayati meningkatkan jumlah dan berat bintil akar efektif dan bobot biji kering per tanaman. Sedangkan perlakuan tepung cangkang telur nyata dalam meningkatkan jumlah dan bobot bintil akar efektif. Sedangkan interaksi antara pupuk hayati dan tepung cangkang telur cenderung meningkatkan jumlah dan berat bintil akar efektif dan bobot biji kering per tanaman

Respons Pertumbuhan Bawang Merah (Allium ascalonicum L.) Terhadap Pemberian Kompos Sampah Kota dan Pupuk K Sando Franciskus Sinaga; Toga Simanungkalit; Yaya Hasanah
Jurnal Agroekoteknologi Vol 4, No 3 (2016)
Publisher : Universitas Sumatera Utara

ABSTRACT Shallot is an essential vegetable commodity in Indonesia. In north of Sumatera, shallot yield has decreased each year. Low production of shallot Indonesia one of them due to the application of cultivation technology. One way to increase the production of shallot is the improvement of cultivation techniques and organic fertilizer.The objective of the research was to determine the response of the growth and production of shallot on the application of municipal waste compost and K fertilizer. Research conducted at the Research Field of Faculty of Agriculture, University of Sumatera Utara, Medan on June to August 2015, using a randomized block design factorial with two factors: Municipal Solid Waste Compost (0, 7.5, 15, 22.5 t / ha) and K fertilizers (0, 75, 150 KCl / ha). Variables observed was the length of the plant , number of leaves and diameter of bulbs dry. The results showed that the urban waste compost not significantly effect on all variables observation, whereas the K fertilizer significantly effect of 3-5 MST plant length and diameter of bulbs dry. Interaction between urban waste compost 7,5 ton/ha and K fertilizer 75 kg KCl/ha is the best treatment to increase the growth and production of shallot. Keywords: K fertilizer, shallot, urban waste compost ABSTRAK Bawang merah merupakan komoditas sayuran penting Indonesia. Produksi bawang merah di sumatera utara mengalami penurunan setiap tahunnya. Rendahnya produksi bawang merah Indonesia salah satunya dikarenakan penerapan teknologi budidaya. Salah satu cara untuk meningkatkan produksi bawang merah adalah perbaikan teknik budidaya dan pemberian pupuk organik. Tujuan penelitian yakni untuk mengetahui respons pertumbuhan dan produksi bawang merah terhadap pemberian kompos sampah kota dan pupuk K. Penelitian dilaksanakan di Lahan Penelitian Fakultas Pertanian, Universitas Sumatera Utara, Medan pada Juni - Agustus 2015, menggunakan Rancangan Acak Kelompok Faktorial dengan dua faktor yaitu Kompos Sampah Kota (0, 7,5, 15, 22,5 ton/ha) dan Pupuk K (0, 75, 150 kg KCl/ha). Peubah yang diamati adalah panjang tanaman, jumlah daun per rumpun dan diameter umbi kering. Hasil penelitian menunjukkan bahwa pemberian kompos sampah kota tidak berpengaruh nyata terhadap semua peubah amatan. Sedangkan pupuk K berpengaruh nyata terhadap tinggi tanaman 3-5 MST dan diameter umbi kering. Kombinasi perlakuan kompos sampah kota dan pupuk K terbaik adalah kompos sampah kota sebanyak 7,5 ton/ha dan pupuk K sebanyak 75 kg KCl/ha meningkatkan pertumbuhan produksi bawang merah. Kata kunci : bawang merah, kompos sampah kota, pupuk K

Response in growth of shallot (Allium ascalonicum L.) to application of mulch and some plant spacing Irfan Fauzi; Yaya Hasanah; Toga Simanungkalit
Jurnal Agroekoteknologi Vol 4, No 3 (2016)
Publisher : Universitas Sumatera Utara

This research has been conducted to obtain a certain application of mulch and some plant spacing which can improve the growth of the shallot. This research had been conducted at experimental field of Faculty of Agriculture University of Sumatera Utara on October to December 2015 using a factorial randomized block design with two factor, i.e. types of mulch (no mulch, straw mulch, silver black plastic mulch) and plant spacing (20 cm x 15 cm, 20 cm x 20 cm,20 cm x 25 cm). Parameter observed were plant height, number of leaves, number of tillers, diameter of the bulbs per sample. The result showed that types of mulch significantly affect of plant height at 2 week after planting (WAP), number of leaves at 2 and 3 WAP in which types of silver black plasctic mulch showed the highest yields. Plant spacing significantly affect the parameters plant height at 3 and 4 WAP. The interaction between types of mulch and plant spacing were not significantly affect on all parameters observed.

The Growth and Yield of Sweet Sorghum (Sorghum bicolor (L.) Moench) On The Mulch Treatments and Organic Matter Novrizal Siregar; Teuku Irmansyah; Mariati Mariati
Jurnal Agroekoteknologi Vol 4, No 3 (2016)
Publisher : Universitas Sumatera Utara

The research has been conducted to evaluation growth and yield of sweet sorghum on the mulch treatments and organic matter. The research was conducted at experimental field, Agricultural Faculty University of Sumatera Utara, Medan with altitude ± 25 meter above sea level, began from April up to August 2015. The experiment was arranged by split plot design with mulch as main plot (without mulch, hay mulch) and organic matter as sub plot i.e., without organic matter, empty fruit bunch compost,chicken manure and mixture of empty fruit bunch compost and chicken manure. Parameters observed were plant lenght, leaves number, stem diameter, flowering time, seed weight per sample, seed weight per plot and weight of 1000 seeds. The results showed that, among all parameters observed, only leaves number was significantly affected by mulch treatment. However there were variations of plant lenght, leaves number, and stem diameter on organic matter treatments. B3 treatments (mixture of empty fruit bunch compost and chicken manure) produced the highest plant length (296.88 cm), the highest leaves number (5.83 strands) and the largest stem diameter (5.38 mm).There was no interaction between mulch treatments and organic matter.

Populasi Bakteri Tanah pada Piringan Tanaman Kelapa Sawit Akibat Pemberian Pupuk NPK Komplit Netanya Panggabean; T. Sabrina; Kemala Sari Lubis
Jurnal Agroekoteknologi Vol 4, No 3 (2016)
Publisher : Universitas Sumatera Utara

Soil biota plays an important role several processes in soil. They are enchancing plant growth as inorganic fertilizer such as NPK complete fertilizer. This research was conducted to study population of some species of bacteria at Gajah Village, Sei Balai Subdistrict, Batubara District. The research was a survey by purposive sampling method that aimed to compare soil bacterial population (Azotobacter spp., Bacillus spp. and Lactobacillus spp.) in the oil palm’s weeded circle. The research was done by taking 60 soil samples in the oil palm’s weeded circle. The result showed that the population of bacteria Azotobacter spp. around the weeded circle of oil palm applied with the NPK complete differed with the oil palm’s weeded circle that has not been given a NPK complete fertilizer. The relationship between the occurrences of soil bacteria with the soil properties showed that the presence of Bacillus spp. affected the water soil content and the nitrogen total. Keywords: Azotobacter spp., Bacillus spp., Lactobacillus spp., NPK complete fertilizer

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