cover
Article Per Year (5 Year)
All
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
PERTANIAN TROPIK
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
 16   17   18   19   20 
Aktivitas Askorbat Peroksidase dan Tanin pada Tanaman Karet (Hevea brasiliensis Muell. Arg.) Klon PB 260 dan RRIM 921 Kas Parsial dengan Pemberian Antidepresan Raihan Zaky Bapoetra; Rosmayati; E. Harso Kardhinata Kardhinata
Jurnal Pertanian Tropik Vol. 5 No. 1 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (528.73 KB) | DOI: 10.32734/jpt.v5i1.3134

Abstract

The aim of the research was to determine the activity of ascorbic peroxide and tannin value on rubber plant clones PB 260 and RRIM 921 with partial Tapping Panel Dryness (TPD) which has been applied with a growth regulator. The results showed that RRIM 921 and PB 260 clones initiate significant value with productivity on 0 and 1 month observed also inactivity of ascorbic peroxide on 1 month observed. Plant condition with healthy and partial TPD showed significant value with tannin on 0 months observed. Positive correlation before the application was on APX and IP (0.060), APX and TSC (0.163), IP with productivity (0.154) and productivity with TSC (0.163). Positive correlation after the application was on APX and tannin (0.057), APX and TSC (0.051), tannin and IP (0.141), IP with productivity (0.316) and productivity with TSC (0.148.)
Evaluasi Kesesuaian Lahan Untuk Tanaman Kopi Arabika (Coffea Arabica) di Kecamatan Pollung Kabupaten Humbang Hasundutan Irvan Selamat Purba; Posma Marbu; Fauzi
Jurnal Pertanian Tropik Vol. 5 No. 1 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (472.11 KB) | DOI: 10.32734/jpt.v5i1.3135

Abstract

The aims of this study was to evaluate the suitability of land for Arabica coffee crops in Pollung District of Humbang Hasundutan Regency. There are sixteen land map units (SPL) determined based on the soil type map, slope map and altitude map resulting from topographic map with scale of 1: 50.000, then grounding on soil type map data, slope map, and altitude map (overlay). Assessment of land suitability class based on the criteria from Bogor Land Research Center. The land evaluation method is the matching method. The results showed that the highest potential land suitability class on Arabica coffee plant was SPL 7 very suitable (S1) and SPL 3, 4, 5, 8, 9, 10, 12, 15, 16 suitable with marginal condition with limit factor is rooting medium (S3rc)
Respon Ketahanan Beberapa Varietas Cabai Rawit (Capsicum frutescens L.) Terhadap Pemberian NaCl secara In Vitro Lita Adelia; Luthfi A. M. Siregar; Khairunnisa Lubis
Jurnal Pertanian Tropik Vol. 5 No. 1 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (178.638 KB) | DOI: 10.32734/jpt.v5i1.3137

Abstract

This study was to determine the resistance of ten cayenne pepper (Capsicum frutescens L.) varieties to salinity stress in viro. This research used completely randomized design with two factors, they were cayenne pepper varieties with 10 varieties of Tetra Hijau, Pedas, Cakra Hijau, Sigantung, Wijaya, Sapade, Sret, Bara, Genie and Hanna 08 and NaCl concentration in growing media with five levels 0 ppm, 2500 ppm, 5000 ppm, 7500 ppm dan 10.000 ppm. The results showed that the variety of cayenne pepper and concentration of NaCl and interaction of both had a significant effect on the crown fresh weight and root fresh weight. Sigantung varieties have the highest average on all observed characters.
Pertumbuhan dan Uji Gula Reduksi 5 Isolat Jamur Asal Batang Kelapa Sawit ke Potongan Batang Kelapa Sawit Poltak Mangatur Tua Sirait; Tengku Sabrina; Asmarlaili Sahar Hanafiah
Jurnal Pertanian Tropik Vol. 5 No. 1 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (611.288 KB) | DOI: 10.32734/jpt.v5i1.3138

Abstract

Fungi is a microorganism that has been widely used to accelerate the rate of decomposition of organic matter. This research was conducted in the soil biology laboratory of the Faculty of Agriculture, University of Sumatera Utara. This study was aimed to examine the potential of fungi isolates derived from palm oil trunks. This research begins by isolating the fungi contained in the cutting of oil palm trunk from the plant rejuvenation. The isolate is purified to obtain a pure culture. Selected isolates were identified by DNA sequencing using PCS 28s ITS and the results were identified as Rhizopus arrhizus Strain ATCC 111450 (A), Rhizopus microspores var rhozopodiformis Strain IFM 46417 (B) Syncephalastrum racemosum isolate VPCI 1857/11) (C), Trichoderma asperellum Strain ATCC 52438 (D), and Trichoderma asperellum Strain G (E). All isolates were applied to sterilized palm oil trunks. The results of this study were Rhizopus microspores var rhozopodiformis Strain IFM 46417 capable of growing well in pH 4, 6, and 8, Trichoderma asperellum Strain G (E) had the fastest growth rate of 64.58 mm / day. Test of cellulase enzyme production by using a method of Fehling A and B aiming at the fungus Trichoderma asperellum Strain G (E) produces the highest cellulase enzyme.
Uji Infektifitas dan Efektifitas Rhizobia sp. terhadap Tanaman Kedelai di Rumah Kasa pada Tanah Ultisol dengan pH yang Berbeda M. Reza Alfikri; Hardy Guchi; Asmarlaili Sahar Hanafiah
Jurnal Pertanian Tropik Vol. 5 No. 1 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (539.708 KB) | DOI: 10.32734/jpt.v5i1.3139

Abstract

Rhizobia fixed nitrogen from the air and supplied legume and effected to soil fertility. The research was conducted in May 2017 until November at Soil Biology Laboratory and Screen House of Agriculture Faculty University of Sumatera Utara. This research was carried out with 2 stages: growth test at various pH with isolate tested (TJA 1, TJA 2, TJA 3, BGR 1, BGR 2, BGR 3, BGR 4, BALAI 1, BALAI 2, BALAI 3, LP 1, LP 2, LP 3, LP 4 and LAB) and the infectivity test and the effectivity of Rhizobia. The research used Randomized Block Design with 2 treatment: Lime (Without Lime and Lime 1 x Aldd) and Isolate Rhizobia (TJA 1, TJA 3, BGR 1, BGR 3, BGR 4, BALAI 2, BALAI 3, LP 1, LP 2, LP 4 and LAB). The application of Rhizobia’s isolate BGR 3 showed the infektively with root nodule amount criteria(124,00). The isolate Rhizobia’s BGR 3 effectively increased N plant level and N absorption (3,80 %; 31,08mg/plant). Application of isolate Rhizobia was not able to increase the level of P plants and P plant uptake. The best interaction was shown (Plant height 85.00 cm, stem diameter 3.93 mm, root nodule 127.50, N level of 3.80%, N absorption 30.16 mg / plant) by treatment of BGR 3 and Lime 1 x Aldd.
Pertumbuhan Dan Produksi Genotipe Bawang Merah (Allium ascalonicum L.) Lokal Samosir Generasi Ke Enam (M1V6) Hasil Iradiasi Sinar Gamma di Dataran Tinggi Samosir Daniel C Sipangkar; Mariati; Meirani
Jurnal Pertanian Tropik Vol. 5 No. 1 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (342.063 KB) | DOI: 10.32734/jpt.v5i1.3140

Abstract

The objective of this research was to identify the growth and yield of sixth-generation (M1V6) of local Samosir shallot, irradiated by gamma. The research was conducted at Rianiate village, Pangururan Samosir district at altitude ± 1164 meters above sea level, which began from July up to October 2016. This study used an augmented design with 8 levels of irradiated dosage (0; 1; 2; 3; 4; 5; 6; 8) Gy. The observes parameters were plant length, number of leaves, number of tillers, bulb number, bulb diameter, bulb fresh weight, and bulb dry weight after twice harvesting. The study result showed that population as a result of dosage irradiation at 5 Gy were significant difference compared to control plant populations with a lower mean value for the plant length, the number of leaves, the number of tillers and fresh weight while on tuber diameter, population of dosage irradiation 8 Gy were significant difference compared to the control population.
Karakter Morfologi Tanaman Kedelai (Glycine max (L.) Merril) Tercekam Kekeringan Melalui Aplikasi Antioksidan Ahmad Sadam; Asil Barus; Mariati
Jurnal Pertanian Tropik Vol. 5 No. 1 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (381.45 KB) | DOI: 10.32734/jpt.v5i1.3142

Abstract

Decreasing soybean production can not fulfill the needs of soybeans in Indonesia, one of the main causes is the decreasing of agricultural land. To increase soybean production in Indonesia can be reached by expanding the planting area, namely by utilizing the potential land. This research was conducted in the plastic house of Faculty of Agriculture, the University of Sumatera Utara, Medan with the height of place ± 25 meters above sea level from August 2016 until November 2016, using randomized block design with 2 factors of treatment. the first factor is drought stress with 3 levels ie KL 80%; KL 60%; TOS 40% and the second factor is the provision of antioxidants with 2 kinds of salicylic acid and ascorbic acid. The results showed that drought stress treatment significantly affected the number of empty pods per plant.
Uji Tipe dan Ketinggian Perangkap untuk Mengendalikan Penggerek Buah Kopi Hypothenemus hampei Ferr. (Coleoptera : Scolytidae) di Desa Pegagan Julu II Kecamatan Sumbul Kabupaten Dairi Winda Nuraini Situmorang Situmorang; Marheni; Ameilia Zuliyanti Siregar
Jurnal Pertanian Tropik Vol. 5 No. 1 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (412.81 KB) | DOI: 10.32734/jpt.v5i1.3143

Abstract

Coffeeberry borer (Hypothenemus hampei) is one of the dominant pests that are difficult to control. This research was conducted to determine the effectiveness type and height of trap to control coffee berry borer in Sumbul, Dairi. The method used Factorial Randomized Block Design (RBD) which consisted of 2 treatments factor and four replications. The first factor was a type of trap (single funnel trap, multiple funnel trap, and mineral bottle) and the second factor was the height of trap (60; 120; 175; and 200 cm). The results showed that the type, height, and interactions were significant by coffee berry borer trapped. The best trap used by the mineral bottle with a height of 60 cm is 2.75 beetles. The type was of trap significant by the number of insects trapped and residue of attractant while height and interaction were nonsignificant. The best trap of insects trapped was a mineral bottle with height 175 cm is 21.8 individuals and the highest insect consisted of Formicidae amounted to 231 individuals with the residue of attractant is 0.73 ml.
Pengaruh Posisi Skarifikasi Benih dan Perendaman Air Kelapa terhadap Perkecambahan Biji dan Pertumbuhan Bibit Sirsak (Annona muricata L.) Arya Agung Pranata; Asil Barus; Meiriani
Jurnal Pertanian Tropik Vol. 5 No. 1 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (480.816 KB) | DOI: 10.32734/jpt.v5i1.3145

Abstract

The problem of generative propagation of soursop is its seeds take a long time to germinate which are caused by the hard seed coat. The solution to solve that problem is scarification and coconut water soaking to simply the process of imbibition and seed germination and also stimulate the growth of shoot. This objective of the research was to determine the effect of the scarification position and the soaking with various concentrations of coconut water on seed germination and growth of soursop seedling. This research was held at the Faculty of Agriculture field, the University of Sumatera Utara in March - July 2017. The research used a factorial randomized block design with two factors and three replication. The first factor is the scarification position (without scarification, stomach scarification, top scarification) and the second factor is coconut water soaking (0%; 25%; 50%; 75 %). The result of the research showed that the germination rate parameter, germination percentage, crop height, number of leaves, root volume and dry weight of crop significantly higher on without scarification treatment than with scarification treatment. The interaction between the scarification position and soaking with various coconut water concentrations was not significantly affecting the seed germination and growth of soursop seedling.
Respons Pertumbuhan Dan Produksi Beberapa Varietas Ubi Jalar (Ipomoea batatas L.) Terhadap Pemberian Kompos Tandan Kosong Kelapa Sawit (TKKS) Tri Andra Zulkadifta
Jurnal Pertanian Tropik Vol. 5 No. 1 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jpt.v5i1.3146

Abstract

Sweet potato is a staple food for the population group of Indonesia. This research was conducted in Desa Suka Raya, Pancur Batu, Deli Serdang altitude ± 35 m asl from April to August 2017. This research used a factorial randomized block design with two factors. The first factor was varieties with three kinds is Beta 1 ; Lubuk Pakam genotype and Perbaungan genotype and the second factor was application the provision of compost oil palm empty fruit bunches (CEFB) with four kinds without CEFB compost ; CEFB compost 400 g/plant ; CEFB compost 600 g/plant ; CEFB compost 800 g/plant. The results showed that the treatment of the Lubuk Pakam genotype significantly increased the increase of plant length, number of tubers per sample, tuber length per sample, tuber weight per sample and harvest index. Composting CEFB 800 g/plant crops increases the growth of plant length, plant biomass. The interaction between the treatment of varieties with the provision of compost CEFB of Lubuk Pakam genotype with the giving of 800 g /plant had a significant effect on the increase of plant length and tuber weight per sample.

Page 18 of 38 | Total Record : 378

 16   17   18   19   20 

Filter by Year

2014 2025


Reset
Filter By Issues
All Issue Vol. 12 No. 3 (2025): JURNAL ONLINE PERTANIAN TROPIK Vol. 12 No. 2 (2025): JURNAL ONLINE PERTANIAN TROPIK Vol. 12 No. 1 (2025): JURNAL ONLINE PERTANIAN TROPIK Vol. 11 No. 3 (2024): JURNAL ONLINE PERTANIAN TROPIK Vol. 11 No. 2 (2024): JURNAL ONLINE PERTANIAN TROPIK Vol. 11 No. 1 (2024): JURNAL ONLINE PERTANIAN TROPIK Vol. 10 No. 3 (2023): JURNAL ONLINE PERTANIAN TROPIK Vol. 10 No. 2 (2023): JURNAL ONLINE PERTANIAN TROPIK Vol. 10 No. 1 (2023): JURNAL ONLINE PERTANIAN TROPIK Vol. 9 No. 3 (2022): JURNAL ONLINE PERTANIAN TROPIK Vol. 9 No. 2 (2022): JURNAL ONLINE PERTANIAN TROPIK Vol. 9 No. 1 (2022): JURNAL ONLINE PERTANIAN TROPIK Vol. 8 No. 3 (2021): JURNAL ONLINE PERTANIAN TROPIK Vol. 8 No. 2 (2021): JURNAL ONLINE PERTANIAN TROPIK Vol. 8 No. 1 (2021): JURNAL ONLINE PERTANIAN TROPIK Vol. 7 No. 3 (2020): JURNAL ONLINE PERTANIAN TROPIK Vol. 7 No. 2 (2020): JURNAL ONLINE PERTANIAN TROPIK Vol. 7 No. 1 (2020): JURNAL ONLINE PERTANIAN TROPIK Vol. 6 No. 3 (2019): JURNAL PERTANIAN TROPIK Vol. 6 No. 2 (2019): JURNAL PERTANIAN TROPIK Vol. 6 No. 1 (2019): JURNAL PERTANIAN TROPIK Vol. 5 No. 3 (2018): JURNAL PERTANIAN TROPIK Vol. 5 No. 2 (2018): JURNAL PERTANIAN TROPIK Vol. 5 No. 1 (2018): JURNAL PERTANIAN TROPIK Vol. 4 No. 3 (2017): JURNAL PERTANIAN TROPIK Vol. 4 No. 2 (2017): JURNAL PERTANIAN TROPIK Vol. 4 No. 1 (2017): JURNAL PERTANIAN TROPIK Vol. 3 No. 3 (2016): JURNAL PERTANIAN TROPIK Vol. 3 No. 2 (2016): JURNAL PERTANIAN TROPIK Vol. 3 No. 1 (2016): JURNAL PERTANIAN TROPIK Vol. 2 No. 3 (2015): JURNAL PERTANIAN TROPIK Vol. 2 No. 2 (2015): JURNAL PERTANIAN TROPIK Vol. 2 No. 1 (2015): JURNAL PERTANIAN TROPIK Vol. 1 No. 1 (2014): JURNAL PERTANIAN TROPIK More Issue