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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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Utilization of In Situ Antagonistic Fungus as A Biocontrol Agent of Lasiodiplodia theobromae Causes of Dieback Disease on The Nutmeg Tree in Aceh Selatan Susanna; Meity S. Sinaga; Suryo Wiyono; Hermanu Triwidodo
Jurnal Pertanian Tropik Vol. 5 No. 3 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Dieback disease caused by Lasiodiplodia theobromae is an important disease on the nutmeg tree in Aceh Selatan. The disease has been widespread in the district. One alternative to control the disease is the use of antagonistic fungi from the nutmeg tree to inhibit the development of the cause of the disease. In vitro experiments were carried out by evaluating 4 types of antagonistic fungi from the nutmeg tree to L. theobromae. The aim of the study was to determine the potential of in situ soil fungus as an antagonistic agents against L. theobromae, the cause of dieback disease on the nutmeg tree in Aceh Selatan. Microbial isolation using serial dilution method. The fungus test which was successfully isolated as an antagonist candidate was carried out through the dual culture method. The results showed that four fungi namely; Trichoderma harzianum, T. virens, T. asperellum, and Talaromyces pinophilus have the potential as antagonistic agents against pathogens cause dieback disease on the nutmeg tree in Aceh Selatan, with inhibitory power ranging from 66-100% in vitro.

Penggunaan Mikoriza Arbuskular dalam Pertumbuhan Bibit Anakan Salak Sidimpuan (Salacca sumatrana Becc.) Rizky Amnah; Meiliana Friska
Jurnal Pertanian Tropik Vol. 5 No. 3 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Salak Sidimpuan (Salacca sumatrana Becc.) merupakan tanaman yang memiliki perakaran yang dangkal sehingga membatasi kemampuan akar menyerap unsur hara. Salah satu cara yang dapat dilakukan untuk meningkatkan pertumbuhan bibit anakan salak Sidimpuan yaitu melalui penggunaan mikoriza arbuskular (MA). Penelitian ini bertujuan untuk melihat pengaruh penggunaan Mikoriza arbuskular dalam pertumbuhan bibit anakan salak Sidimpuan. Penelitian ini dilaksanakan di Rumah Kasa Fakultas Pertanian Universitas Graha Nusantara Padangsidimpuan. Rancangan yang digunakan adalah Rancangan Acak Kelompok Faktorial dengan dua faktor dan 3 ulangan. Faktor pertama (2 taraf jenis MA) yaitu: M1 (Glomus sp) dan M2 (Acaulospora sp). Faktor kedua (4 taraf dosis MA), yaitu D0 (Kontrol), D1 (50g MA/polibag), D2 (100g MA/polibag) dan D3 (150g MA/polibag). Hasil penelitian menunjukkan bahwa terdapat interaksi antara jenis dan dosis Mikoriza arbuskular terhadap rata-rata pertambahan tinggi bibit anakan salak Sidimpuan dengan perlakuan terbaik pada M2D3 (Acaulospora sp dan 150 g MA/polibag) dan rata-rata pertambahan jumlah daun bibit anakan salak Sidimpuan dengan perlakuan terbaik pada M1D3 (Glomus sp dan 150 g MA/polibag)

Performance of Floating Raft Fertigation System on Water Spinach Plants (Ipomea reptans Poir.) Cultivation Rizal Hadyan Fadhlillah; Sophia Dwiratna; Kharistya Amaru
Jurnal Pertanian Tropik Vol. 6 No. 2 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

The increase of human population impact to more land needed for residence and has an impact on the decreasing land for agriculture, especially in urban areas. One of solution for farming in urban areas is by utilizing rooftop farming by hydroponic cultivation. The hydroponic system that used in this research is floating raft system. This study aims to determine the performance of the floating raft fertigation system which includes the amount of energy consumption, water, nutrient solution, growth uniformity and yield productivity in water spinach cultivation using floating raft fertigation system for one period of growth. This research was carried out on the rooftop of the building of the Food Industry Technology Department of Padjadjaran University with descriptive analysis method. The parameters measured in this study were the amount of water consumption, nutrition and electrical energy from the floating raft fertigation system that was used and uniformity of the results of plant growth including plant height, root length and plant weight at harvest determined in this study, 16 days after transplanting. Result showed that water consumption for one time growth period water spinach was 300,63 liters; consumption of nutrients was 3860 ml and electricity consumption was 31,816 kW. The uniformity of water spinach plant results of the study was in the category of good. The efficiency of water use was 99.6 kg/m3 and plant productivity based on research results is 72.8 kg/m2.

Pengaruh Penambahan Berbagai Komposisi Bahan Organik Terhadap Karakteristik Hidroton Sebagai Media Tanam Ade Sylvia Rosman; Dwi Rustam Kendarto; Sophia Dwiratna
Jurnal Pertanian Tropik Vol. 6 No. 2 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Media tanam adalah salah satu faktor penting dalam budidaya tanam. Media tanam yang baik harus mampu memenuhi persyaratan karakteristik sebagai media tanam. Hidroton merupakan media tanam anorganik dari tanah liat yang dipanaskan. Tanah liat dalam menahan air dipengaruhi oleh tekstur tanah dan bahan organik. Penambahan bahan organik pada hidroton dapat mengubah karakteristik hidroton. Penelitian ini bertujuan untuk mengetahui pengaruh dan komposisi terbaik penambahan bahan organik berupa arang sekam, cocopeat dan kompos pada pembuatan hidroton terhadap karakteristik hidroton sebagai media tanam hidroponik. Percobaan disusun menggunakan Rancangan Acak Lengkap (RAL) dengan delapan perlakuan berupa kontrol dan penambahan masing-masing bahan organik dengan dosis sebesar 2,5% dan 5% sebanyak empat kali ulangan. Data dianalisis menggunakan ANOVA dan dilanjutkan dengan uji DMRT pada taraf 5%. Hasil penelitian menunjukkan bahwa penambahan bahan organik berpengaruh nyata terhadap nilai bobot isi, kadar air, tingkat kekerasan, water holding capacity (WHC), pH dan nilai EC hidroton. Perlakuan yang dianggap memberikan hasil terbaik terdapat pada perlakuan D5 (Cocopeat 5%) dengan nilai BD media 1,417 gr/cm3, kadar air 3,623%, kekerasan 38,001 N/cm2, WHC 37,453%, pH 6,175, dan EC 192,05 μS/cm.

Respon Pertumbuhan Akar Beberapa Hasil Persilangan Populasi F1 Tanaman Jagung (Zea mays L.) terhadap Cekaman Besi (Fe) pada Media Kultur Hara Hanipah Tanjung; Khairunnisa Lubis; Luthfi Aziz Mahmud Siregar
Jurnal Pertanian Tropik Vol. 5 No. 1 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

The aims of the research were to know The Root Growth Response of Some crosses F1 Corn Populations (Zea mays L.) at Iron Stress (Fe) in Medium of Nutrient Culture. This research was conducted at the greenhouse Faculty of the Agriculture University of Sumatera Utara, Medan from March to April 2017. The research used Randomized Block Design (RBD) with two using two factors i.e : F1 population (NEI 9008 x CLA 46, CLA 84 x NEI 9008, CLA 106 x NEI 9008, CLA 16 x CLA 84, and CLA 84 x P1027) and iron stress treatment (0, 50 ppm, and 100 ppm). The results showed that the F1 population had a significant effect on root-canopy weight, root volume, and root canopy ratio. Iron stress treatment with different concentrations had a significant effect on root distribution parameters, root canopy ratio, root length, and the extension of root length. The interaction between F1 population and iron stress has a significant effect on root volume character. Iron treatment with a concentration of 100 ppm can still be tolerated by the F1 population of maize crops on nutrient culture. The CLA 16 x CLA 84 populations had a better adaptation to the iron stress treatment in nutrient culture media. The CLA 16 x CLA 84 had lower stress sensitivity index value and a smaller productivity gap on root dry weight.

Karakteristik Pertumbuhan Akar dan Tajuk dua Varietas Lada Perdu (Piper nigrum L.) dengan Perlakuan Cekaman Naungan Siti Aminah Nasution; Chairani Hanum; Jonatan Ginting
Jurnal Pertanian Tropik Vol. 5 No. 1 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Morphological observations were a preliminary identification for plant adaptation to shading stress. This research was conducted at Cengkeh Turi, North Binjai Subdistrict (32 meters above sea) from April to June 2017, used Split Plot Design. The main plot was shade (0, 25, 50 and 75%) and the sub plot was pepper varieties (Bengkayang and Lokal Binjai). The results showed that two varieties of pepper used have the same responses on the shoot dry weight, root dry weight, number of leaf area. Shading stress treatment had a significant effect on shoot dry weight and the number of leaf areas. Lokal Binjai was more adaptive to shading stress compared to Bengkayang. Light intensity 25% it is a good condition for two varieties of pepper

Pertumbuhan Bawang Merah (Allium ascalonicum L.) Lokal Samosir Pada Berbagai UkuranWadah dan Dosis NPK Hendri Tawar Miko Lubis; Jonis Ginting
Jurnal Pertanian Tropik Vol. 5 No. 1 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

The aims of the research were to study the influence of various size containers and doses of NPK fertilizer on the growth of the shallot. The research was conducted in the greenhouse of Agriculture Faculty, University of Sumatera Utara, Medan, which began from Oktober 15th – October 28th, 2017. The research was arranged by using randomized block design with 2 factors, i.e; size containers 15 cm, 20 cm, 25 cm, and 30 cm and the dose of NPK 0 g, 0.5 g, 1 g, 1.5 g, and 2 g. The parameters observed were plant length, number of leaves and number of tillers. The results showed that all parameters observed were not significantly affected by size container, a dose of NPK and interaction between both treatments until the age of 14 days after planting.

Deskripsi Makrofauna pada Tanah Andisol di Kabupaten Karo dengan Berbagai Ketebalan Abu Vulkanik Gunung Sinabung Armando Septian Simbolon; Mariani sembiring; Tengku Sabrina
Jurnal Pertanian Tropik Vol. 5 No. 1 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Changed soil conditions will result in the changed population and diversity in the soil. The eruption of Sinabung Mount caused the surface of the soil covered with volcanic ash with various thicknesses. This research was to study a description of macrofaunal communities at different thicknesses of Sinabung volcanic ash on andisol soil in Karo Regency. The experiment was conducted in May 2017. The experiment plot was located at four locations, location I was not covered by ash (0 cm), location II was covered with thin ash (≤2 cm), location III was covered with medium ash (2-8 cm), location IV was covered with thick ash (≥8 cm) using the transect sampling method. Samples was collected by using the Pitfall Trap, Monolith quadrant, and the Hand Sorting method. Macrofaunal communities found 3 phyla, 6 classes, 11 orders, 17 families, and 18 species at location I. Macrofaunal communities found 3 phyla, 7 classes, 11 orders, 16 families, and 17 species at location II. Macrofaunal communities found 2 phyla, 3 classes, 7 orders, 9 families, and 9 species at location III. Macrofaunal communities found 1 phylum, 2 classes, 5 orders, 7 families, and 7 species at location IV.

Pendugaan tingkat bahaya erosi pada hutan dan lahan Kopi Arabika (Coffea arabica) di Kecamatan Sibolangit Devisna Situngkir; Jamilah; Posma Marbun
Jurnal Pertanian Tropik Vol. 5 No. 1 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Vegetation is one of the factors affecting the actual erosion of a land. The changes in forest land use patterns into coffee lands can increase the erosion hazard. The aim of this research was to get information about erosion hazard level in forest and coffee arabica lands in Sibolangit Sub District by using USLE (Universal Soil Loss Equation) method. The Research was conducted in January-July 2017 in Sibolangit District at three villages ie Negeri Suah, Bukum and Cinta Rakyat. In this research, were 6 samples in Arabica coffee field sample (1, 2 and 3) and in Forest sample (1, 2 and 3). The research was conducted by using survey method and continued with soil erosion calculation by USLE (Universal Soil Loss Equation) prediction equation. The results showed that the value of erosion in the coffee arabica land in Cinta Rakyat Village on the slope of 60% was 432,87 ton.ha-1.year-1 (very high). The highest erosion hazard level in Bukum Village on the slope of 25% was 88,144 ton.ha-1.year-1 and the highest erosion hazard level in the Negeri Suah Village on the slope of 46% was 193,083 ton.ha-1.year-1. The value of erosion in the area forest in the Cinta Rakyat Forest on the slope 58% was 1,087 ton.ha-1.year-1with lowest erosion hazard. The lowest erosion hazard level in the Bukum Forest on the slope of 21% was 0,190 ton.ha-1.year-1and the lowest erosion hazard level in the Negeri Suah Forest on the slope of 36 % was 0,309 ton.ha-1.year-1.

Pengukuran erosi pada pertanaman kentang dan jagung padabeberapa kemiringan di desa Guru SingaKabupaten Karo dengan metode USLE Ananda P Harahap; Hardy Guchi; Jamilah
Jurnal Pertanian Tropik Vol. 5 No. 1 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

The type of plant and selection of conservation techniques greatly influence the extent of erosion. The aim of this study was to measure the value of the erosion in the field of potato and corn with the slopes by using USLE method (Universal Soil Loss Equation). This study had been implemented in the fields of potato and corn with a slope 0-3, 3-8%,8-15%, 15-25% and 25-45% in Guru Singa village, Berastagi sub-district, Karo district started on April until October 2016. Soil analysis was carried out in Research Laboratories and Technological Faculty of Agriculture, Universitas Sumatera Utara. The result showed that the amount of erosion occurred in the potato field. The field planted by contour direction in slope 0 – 3 % was 4,55 ton ha-1 yr-1 with the low level of erosion hazard. The highest level of erosion hazard in slope 8 – 15 % was 112,57ton ha-1 yr-1. The highest level of erosion hazard in slope 15 – 25 % was 160,97ton ha-1 yr-1. Based on data from the cornfield planted by cutting on contour, the amount of erosion in slope 3 – 8 % was 15,61ton ha-1 yr-1with the middle level of erosion hazard. The highest level of erosion hazard in slope 25 – 45% was 106,08ton ha-1 yr-1. It is required to do the changing of land conservation in order to minimize the risk of erosion or at least equal to the soil erosion tolerated.

Page 17 of 38 | Total Record : 378

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

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

Abstract

Abstract

Abstract

Abstract

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Abstract

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Abstract

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