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PERTANIAN TROPIK

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Published by Universitas Sumatera Utara

ISSN : 26557576 EISSN : 23564725 DOI : https://doi.org/10.32734/jpt.

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

Tropical Agriculture Journal (JPT) is a peer-reviewed online journal of Agriculture Postgraduate Study Program Universitas Sumatera Utara (USU). Journal is a result of research, or scientific reviews of researchers, students and agricultural institutions, and others related to agricultural studies in the tropical region. Published in Indonesian and English language with 3 volumes/year (April, August, December). These articles are indexed by Google Scholar, PKP Indexing, RootIndexing, Portal Garuda, Indonesian Publication Index (Garuda Portal), One Search Perpustakaan Nasional, BASE (Bielefeld Academic Search Engine), and Directory of Research Journal Indexing (DRJI), JPT is member of AJPI (Association of Indonesian Agriculture Journal, and strives to be a means of periodic, accredited, national scientific publications or reputable international publications through.

Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)

Articles 378 Documents

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Respons Pertumbuhan dan Produksi Tanaman Jagung Manis Terhadap Aplikasi Biochar dan Pupuk Organik Cair Domas Mesiekiel Simanjuntak; Nini Rahmawati; Rosita Sipayung
Jurnal Pertanian Tropik Vol. 5 No. 3 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Penelitian ini dilaksanakan di lahan penelitian Balai Benih Induk Tanjung Selamat, jalan Pendidikan Kelurahan Tanjung Selamat, Kecamatan Medan Tuntungan, Medan pada ketinggian tempat ± 35 m dpl. Penelitian ini dilaksanakan pada bulan Oktober sampai dengan Desember 2016. Metode percobaan yang digunakan adalah Rancangan Acak Kelompok (RAK) faktorial dengan 2 faktor perlakuan yaitu dosis biochar yaitu kontrol, 5 ton/hektar, 10 ton/hektar, 15 ton/hektar dan konsentrasi pupuk organik cair yakni kontrol, 5 ml/liter air, 10 ml/liter air, 15 ml/liter air. Hasil penelitian menunjukkan bahwa perlakuan biochar berpengaruh nyata terhadap peubah amatan volume akar, produksi per sampel dan produksi per plot, perlakuan biochar terbaik ialah 15 ton/hektar.Perlakuan pupuk organik cair berpengaruh nyata terhadap peubah amatan luas daun, volume akar dan produksi per plot, perlakuan pupuk organik cair terbaik ialah 15 ml/liter air sedangkan interaksi antara perlakuan pupuk organik cair dan perlakuan biochar tidak berpengaruh nyata terhadap semua peubah amatan.

The Utilization Of Some Of Biochar To Retain N-Total In Inceptisols Ulfa Heryani; Benny Hidayat; Mukhlis
Jurnal Pertanian Tropik Vol. 5 No. 3 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Nitrogen is very important nutrient growth of plant but eassy lost from soil. The aim of this researc to get the best biochar feedstock in maintaining N-total in the Inceptisol soil. Theresearch was carried out in the laboratory using the method of experiment. This research was carried out with complete randomized design non factorial with the treatment without biochar (controls), and 4 types of biochar from palm empty fruit bunches, rice straw, rice husks and wood, is repeated four times. The observed parameters are pH H2O,CEC, & N-total ground. The results showed that the four types of biochar can increase the pH H2O, CEC, N-total ground. Loss of Nutrient N decreased significantly due to the granting of biochar palm empty fruit bunches. Absorption capacity of biochar to reduce leaching of N in the soil of inseptisol sorted from largest to smallest is biochar palm empty fruit bunches, rice husk, rice straw and wood.

Growth and Production Response of Varieties of Mung Beans (Vigna radiata L.) to Gibberellin Concentration in the Saline Field Rina Atika; Eva Sartini Bayu; Emmy Harso Kardhinata
Jurnal Pertanian Tropik Vol. 5 No. 3 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

This study aims to determine the growth and production response of some mung bean varieties with the application of gibberellin at different concentrations in the saline field. This research was conducted at Hamparan Perak , District of Deli Serdang North Sumatera, Medan (± 3-9 m asl) from May - August 2017. The tretment was arranged by Randomized Block Design (RBD) with two factors, three mung green varieties (Vima-1, Vima-2, and Vima-3) and GA3 concentration (0 ppm, 100 ppm, 200 ppm). The results showed that there were significant diffrent among varieties on plant height, the number of pods per plant, and the diameter of the seed. Gibberellin concentration gives sinificant effect to the plant height in 3 and 5 week after pllanted, root volume, and seed diameter. The interaction between aplication gibberellins and varieties had a significant effect on the root volume.

Keragaan Morfologi dan Kandungan Antosianin Padi Beras Merah (Oryza sativa L.) di Kecamatan Munte dan Kecamatan Payung, Kabupaten Karo Wiwik Winarti; Eva Sartini Bayu; Revandy Iskandar Damanik
Jurnal Pertanian Tropik Vol. 5 No. 3 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Keragaan morfologi dan kandungan antosianin padi beras merah (Oryza sativa L.) pada Kecamatan Munte dan Kecamatan Payung di Kabupaten Karo. Penelitian ini bertujuan untuk mendapatkan informasi morfologi dan kandungan antosianin padi beras merah (Oryza sativa L.). Penelitian ini dimulai dari Juni 2017dan selesai pada Januari 2018 di kecamatan Munte dan Kecamatan Payung Kabupaten Karo.Metode survei deskriptif menggunakan panduan International Rice Research Institute (IRRI). Teknik penentuan lokasi secara sengaja dan pengamblan sampel secara kebetulan.Uji kandungan antosianin menggunakan metode analitik dengan menghomogenkan sampel. Hasil eksplorasi didapatkan 72 genotipe yang dibagi menjadi tiga lokasi lahan. Berdasaran uji kandungan antosianin didapatkan lahan A memiliki kandungan tertinggi yaitu 0,5 mg/100 g dan terendah yaitu lahan B 0,08 mg/100 g.

Kajian Neraca Air pada Perkebunan Kelapa Sawit Studi Kasus : Kebun Pabatu, PTPN 4 Edi Susanto; Budi Indra Setiawan; Yuli Suharnoto; Liyantono
Jurnal Pertanian Tropik Vol. 5 No. 3 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Penelitian ini bertujuan untuk memperoleh nilai komponen neraca air yang terjadi perkebunan kelapa sawit. Untuk mengetahui neraca air pada perkebunan kelapa sawit digunakan persamaan: P−ETc−Q±ΔS=0 dimana P = jumlah curah hujan (mm), ETc = jumlah evapotranspirasi tanaman, Q = jumlah aliran permukaan (mm) dan ΔS = perubahasan simpanan air (mm). Dari hasil penelitian tentang neraca air pada perkebunan kelapa sawit diperoleh kesimpulan bahwa sumber pasokan air pada lokasi penelitian 100% berasal dari curah hujan sebesar 1661 mm/tahun, dan dari curah hujan tersebut sebesar 1520 mm/tahun atau 91% keluar air sebagai evapotranspirasi tanaman dan 218 mm/tahun atau 13% keluar sebagai aliran permukaan. Secara umum terjadi defisit perubahan simpanan air sebesar -76 mm, hal ini karena terjadi dampak El Niño pada tahun 2015 di lokasi penelitian (wilayah Sumatera).

Recommendations for the Development of Sweet Corn Varieties (Zea mays saccharata, Sturt) for Several Planting area in Pekanbaru Surtinah Surtinah; Niken Nurwati
Jurnal Pertanian Tropik Vol. 5 No. 3 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Sweet corn is one commodity in great demand to day. Its production is very dependent on the variety in the plants and the location of planting. The aim of the study was to obtain varieties of sweet corn with high production, at suitable locations in Pekanbaru, which would be recommended for cultivation. The research method used is the experimental method with treatment design, namely the first factor is Variety which consists of 3 varieties of sweet corn, namely Sweet boy, Sweet Lady, and Bonanza, and the second factor is the location of planting, namely Rumbai Subdistrict, Bukit Raya District, and Marpoyan District peacefully. using factorial complete randomized design, with six replications. Observation parameters are weighted ear cob (g), ear length without weights (cm), the weight of cob without weighting (g), and sugar content of seeds (%). The data obtained were analyzed using Sidik Ragam and DMRT multiple distance test at the level of 5%. The recommendations givenfor planting in Rumbai Subdistrict are Sweet Lady varieties, for Bukit Raya District are Sweet Lady and Bonanza, and in Marpoyan Damai District are Sweet Boy varieties. The location that provides the highest sweet corn production is Bukit Raya, and the variety that provides the best production is Bonanza. Leaves of plants play a role in sweet corn production.

Eksplorasi dan Identifikasi Tanaman Aren (Arenga pinnata Merr) di Kabupaten Tapanuli Selatan Parmanoan Harahap; Rosmayati; Erwin Masrul Harahap; Darmadi Erwin Harahap; Fitra Syawal Harahap
Jurnal Pertanian Tropik Vol. 5 No. 3 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Penelitian ini bertujuan untuk mengetahui keanekaragaman aksesi aren yang tersebar di Kabupaten Tapanuli Selatan dan mengelompokkan populasi seleksi untuk mendapatkan produksi yang tinggi. Delapan puluh aksesi aren populasi alam asal empat kecamatan telah di identifikasi menurut IPGRI (International Plant Genetic Resources Institute, 1995) dan dianalisis. Hasil menunjukkan terbentuknya 4 cluster yang disimpulkan bahwa cluster 1 merupakan kelompok aksesi aren dengan karakter fenotip yang sesuai untuk memproduksi buah dari mayang bunga betina. Sedangkan cluster 3 merupakan kelompok aksesi aren dengan karakter fenotip yang sesuai untuk memproduksi nira (bahan baku gula aren) dari mayang bunga jantan.

Efficiency Use of Nitrogen In Several Palm Oil Varieties With Treatment of Nitrogen Fertilizer Levels In Main Nursery Muhammad Afrillah; Chairani Hanum; Abdul Rauf
Jurnal Pertanian Tropik Vol. 5 No. 3 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Efficiency use of nitrogen in several palm oil varieties with treatment in nitrogen fertilizer level in main nursery. This study aims to determine the growth characteristics of several varieties of palm oil efficient use of nitrogen with the provision of various nitrogen levels in the main nursery. The research was conducted in the nursery area of Yos Sudarso Binjai road and the Soil Laboratory of the Palm Oil Research Center, Medan from May to November 2017, using a factorial randomized block design with two factors. The first factor is varieties consisting of 7 types namely Avros, Simalungun, PPKS 540, Yangambi, PPKS 718, PPKS 239, Langkat. The second factor is the N fertilization dose consisting of 5 levels ie 0, 25, 50, 75 and 100% from fertilizer recommendation. The results showed that the addition of N level increased the dry weight of the canopy, and the uptake of plant N nutrients. The efficient use of optimal Nitrogen in Yangambi varieties was obtained on N 25% fertilization, while Avros and PPKS 239 were at 50% recommendation level. 75% recommendation produce optimal value efficient use of N on Simalungun variety, PPKS 718, and Langkat. PPKS 540 varieties efficient use of N optimal at 100% recommendation level.

Availibility of P, K in paddy Land Under Organic application Fitra Syawal Harahap; Abdul Rauf; Benny Hidayat; Hilwa Walida; Jamidi; Lisdyani
Jurnal Pertanian Tropik Vol. 5 No. 3 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Organic materials in situ remaining paddy crops in paddy fields are much abandoned by farmers. Most of the remaining harvested are burned, stacked in the cultivated, or used for animal feed or as a fungus. Straw compost is source of Potassium (K) and Silica (Si). About 80% of K absorbed by plants is in the straw. The return of straw to the soil may slow the impoverishment of Potassium (K) in the soil. This study aims to find out how the availability of phosphorus (P) and potassium (K) nutrients by giving organic matter as soil fertility status in paddy fields in Beringin Subdistrict, Deli Serdang Regency and to review management alternatives that are in accordance with the soil fertility status in the Central Land Rice fields in Beringin Subdistrict, Deli Serdang Regency. This research was carried out in the Central Rice Field in Beringin Subdistrict, Deli Serdang Regency ± 11 meters above sea level. The taking of soil samples was taken in the upper layer at the top soil depth of 0-20 cm, 20-40 cm and the coordinates were recorded using GPS (Global Positioning System). While information on land management is obtained by direct observation in the field and in-depth interviews with farmers in snow ball which aims to obtain complete information from farmers. Soil samples that have been taken in the field are then analyzed in the laboratory. Soil chemical properties analyzed in laboratory soil chemical properties analyzed at P2O5 Bray II (ppm) laboratory K2O Hcl 25% (mg / 100g). To determine the chemical properties of soil with certain criteria that have been determined. Based on Technical Guidelines for Evaluation of Soil Fertility The direction of management of soil fertility needs to be added to organic matter and phosphorus fertilization regularly so that soil fertility can be sustainable. Further research is needed in order to find out the addition of phosphorus fertilizer and organic matter in each unit of land.

Testing the nutrient value of chicken manure in the decomposition of Trichoderma viride Siti Hardianti Wahyuni; Dini Puspita Yanti Nst
Jurnal Pertanian Tropik Vol. 5 No. 3 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Testing the macro nutrient value of chicken manure decomposed by Trichoderma viride. This study aims to determine the value of macro nutrients in chicken manure decomposed by Trichoderma viride. This research was carried out on the field of the Faculty of Agriculture, Graha Nusantara Padangsidimpuan University, from February to August 2018. The results showed that compost with the addition of decomposer Trichoderma viride which was good was 4 weeks (A4), namely organic B = 45.70%, organic C = 91.03, C / N ratio = 11, 13%, total N = 3.51%, total P = 3.41%, total K = 1.58%

Page 16 of 38 | Total Record : 378

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Home Page

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Editorial Team

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Contact Name Benny Hidayat

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Editorial Address 03, Prof. A. Sofyan Street Campus USU, Medan 20155- Indonesia

Location Kota medan, Sumatera utara INDONESIA

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Contact Name
Benny Hidayat

Contact Email
bendayat@gmail.com

Phone
+6281396675484

Journal Mail Official
jpt@gmail.com

Editorial Address
03, Prof. A. Sofyan Street Campus USU, Medan 20155- Indonesia

Location
Kota medan,

Sumatera utara

INDONESIA