Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

PERTANIAN TROPIK

jpt
Website

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

11 12 13 14 15

KISARAN INANG Corynespora cassiicola (Berk. & Curt) Wei PADA TANAMAN DI SEKITAR PERTANAMAN KARET (Hevea brassiliensis Muell) Suryani Sajar
Jurnal Pertanian Tropik Vol. 4 No. 1 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Leaf fall disease caused by Corynespora cassiicola is the most important disease in a rubber plantation. Thedisruption will decrease the productivity, delaying on grafting in a nursery and hard attack will flaw the seed,stunted and even dead. Curative prevention on old crop need huge expenses with uncertain result, hence it isnecessary to understand the host range of C. cassiicola completed with its cultural characteristics to utilizedin disease preventions such as intercropping and mixed cropping recommendation for weed control action.This study aims to obtain plants that are host of C. cassiicola. This research showed that isolate of C. cassiicolafrom clone GT1 of rubber infected 12 plants from 16 tested plants in various incubation periods which were:cucumber, soybean, alamanda, papaya, cassava, babadotan, sweet potato, tapak dara, peanuts, asystasia,mucuna, and RRIM 600. Pathogenicity examination showed 5 resistence degree, which were: resistant(babadotan, lulangan weed, sweet potato, mucuna, lantana, asystasia, spinach torm and sembung rambat) ;slightly resistant (rubber, peanuts, alamanda and tapak dara) ; moderate (soybean and papaya) ; slightlysusceptible (cassava) and susceptible (cucumber).

PENGARUH METODE STERILISASI DAN KONSENTRASI FILTRAT BAKTERI ENDOFIT TANAMAN TEBU UNTUK MENGENDALIKAN PENYAKIT BLENDOK (Xanthomonas albilineans (Ashby) Savulescu 1947) Astri Afriani
Jurnal Pertanian Tropik Vol. 4 No. 1 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Leaf scald (Xanthomonas albilineans) is an important pathogen of sugar cane in Indonesiaand cause significant losses at several main sugarcane plantations. Some control measures, e.i.bactericides smeared Lysol 20% or alcohol 70% on cutting knife seedling for disinfectant,and hot water treatment at 50 minutes on 52,5ᵒC, have not given satisfactory results inmanaging this leaf scald in sugarcane on the field. Biological control with filtrate ofendophytes bacterial were alternative to biocontrol agents Xanthomonas albilineans. Theobjectives of this research were to determine: influence of sterilization methods andendophytic bacterial filtrate dosages of sugarcane to control leaf scald (Xanthomonasalbilineans). This research was conducted in Phytopathology Laboratory at the Faculty ofAgriculture University of North Sumatra from April until December 2014. This research haddone with Completely Randomized Design (CRD) with three-factor: 1. type of endophyticbacterial filtrates: filtrate of B2, B7 and B9 Sterilization methods of endophytic bacterialfiltrate: control (no sterilization), Sterilization by autoclave and Sterilization by filtermembrane, 3. Dosage of endophytic filtrate with four-level: 0,1%, 0,01%, 0,001% and0,0001%. The result showed: 10 isolate endophytic bacteria had exploration were: B1, B2,B3, B4, B5, B6, B7, B8, B9, and B10. Three isolates had a clear zone on Petri dish ≥ 20 mm invitro testing is B9, B7, and B2. The results showed that the membrane filter sterilizationmethod was better when compared to autoclave sterilization, namely: the highest inhibitoryzone diameter of endophytic bacteria in the treatment of B9 filtrate with a membrane filtersterilization method 0,1% at 3 days after inoculation that was equal to 23.00 mm.

RESPONS PERTUMBUHAN DAN PRODUKSI BEBERAPA VARIETAS PADI GOGO (Oriza sativa L.) DENGAN KETEBALAN TANAH MINERAL PADA LAHAN GAMBUT Maslaita
Jurnal Pertanian Tropik Vol. 4 No. 1 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

A large area of feat soil as available across Aceh Singkil province of Aceh. The possibility of thearea for upland rice farming is a necessary tube evaluated. This study aims to evaluate the growth andyield of upland rice varieties on peat soil with different thickness of soil. The research useda randomized block design with 2 (two) factors. The first factor was rice varieties (V) were consistof (1) Local variety (Siliam varieties), (2) Situ Bagendit varieties, (3) Situ Patenggang varieties and(4) Batutegi varieties. Whereas the second-factor thickness of mineral soil applied on peat whichconsists of 5 cm, 10 cm, 15 cm, 20 cm and no mineral soil as a control. The results indicated thatvarieties of upland rice showed a significant effect on the growth and production variables such asplant height 4, 6, 8 and 10 weeks after planting, where Situ Bagendit variety was the highest amongthe varieties. Similarly, the number of tillers 4, 6, 8 and 10 weeks after planting, the highest number oftillers was found on Situ Bagendit variety, while for the highest number of grain per panicle was inBatutegi varieties. The thickness of mineral soil applicated on peat soil indicated a significant effecton the growth and production variables such as plant height 4 weeks after planting. The highestyield of upland rice was fond on Situ Bagendit variety followed by Batutegi variety, SituPatenggang variety and local variety (Siliam variety).

ANALISIS AWAL KERAGAMAN MOLEKULAR KELAPA SAWIT (Elaies guineensis Jacq.) MENGGUNAKAN LIMA PRIMER SSR (Simple Sequences Repeats) Arnen Pasaribu
Jurnal Pertanian Tropik Vol. 4 No. 1 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Molecular variance is very important. The information resulted from the analysis at the molecularlevel can advantage as a first step to manage breeding programs. The aim of thisresearch was to determine a molecular variance in palm oil-based on SSR primer usingFR0465, FR391, FR304, FR0350 and FR3693 primers. The research was conducted atTerpadu Laboratory, Faculty of Medicines, North Sumatera University from September 2015to February 2016. Gen Alex ver. 6.501, Power Marker 3.25 and software DARwin SoftwareVersion 6 was used to calculate and analysis. The result of this research showed that the value ofmolecular variants of Palm Oil (E. guineensis) was 62.43%, polymorphic information content(PIC) was 0.338. The measure of fragment about 120 bp – 496 bp. FR02350 has the highest numberof alel and the value of expected heterozygote (He) was 0.685.

IDENTIFIKASI KERAGAMAN MOLEKULER MATERIALGENETIK KELAPA SAWIT (Elaeis guineensis Jacq.) BERDASARKAN MARKA SSR (Simple Sequence Repeats) Indra Syahputra
Jurnal Pertanian Tropik Vol. 4 No. 1 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Oil Palm very important for Indonesia. The plant breeding programs were done to found thebest varieties. The identification of molecular variants is the one step of plant breeding programs.The purpose of this research was to analysis molecular variants of the genetic material of oil palm-based on 4 SSR markers, there were mCnCIR0038, mEgCIR0894, mEgCIR3292 and mEgCIR3663. DARwin 6.0 was used to analysis of the data. The results of this research showedthat genetic molecular variants based on SSR markers were 41.68%.

EFEKTIVITAS BAKTERI ENDOFIT SEBAGAI PUPUK HAYATI TERHADAP PERTUMBUHAN DAN PRODUKSI CABAI (Capsicum annuum, L.) Rahmi Zuhra
Jurnal Pertanian Tropik Vol. 4 No. 1 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

The endophytic bacteria is one of the microbes that can be used as a biofertilizer to enhancethe growth and production of chili. The aim of research to determine the effectivity ofendophytic bacteria as biofertilizer origin of chili and corn to increase the growth andproduction of chili. The experiment was conducted at home of gauze, Langsa Aceh. Theresearch method is a randomized block design with 19 treatment and 3 replication. Theresults showed that isolates A1 (from roots chili) and A20 (from the roots of corn) wereeffective against root growth, while the A24 isolates (from corn stalks) are effective againstplant height and chili.

EMISI CO2 PADA BEBERAPA PRAKTEK KULTUR TEKNIS KELAPA SAWIT DI LAHAN GAMBUT Muhammad Arif Yusuf; Suroso Rahutomo; Winarna
Jurnal Pertanian Tropik Vol. 4 No. 1 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Penelitian untuk mengetahui Besarnya emisi CO2 pada perkebunan kelapa sawit di lahangambut dan untuk mengetahui praktek kultur teknis yang rendah emisi telah dilakukan diKabupaten Labuhan Batu, Sumatera Utara. Metode pengukuran yang digunakan adalahpengukuran langsung dengan metode close chamber technique menggunakan Portable GasChromatography. Penelitian ini menunjukkan bahwa tata kelola air yang baik, pemadatantanah, dan penanaman legume cover crop merupakan praktek kultur teknis yang rendah emisiCO2. Rerata emisi CO2 pada kebun kelapa sawit di lahan gambut yang menerapkan tatakelola air yang baik (kedalaman muka air tanah sekitar 50 cm), pemadatan tanah sebelumpenanaman, dan penanaman Mucuna bracteata sebagai cover crop berturut-turut sebesar33,69 ton/ha/tahun, 35,30 ton/ha/tahun, dan 34,40 ton/ha/tahun. Nilai rerata emisi CO2tersebut lebih rendah dibandingkan pada kebun kelapa sawit dengan tata air yang buruk(kedalaman muka air tanah sekitar 100 cm), tanpa pemadatan tanah saat penanaman, dantanpa cover crop yang berturut-turut mencapai 66,71 ton/ha/tahun, 65,55 ton/ha/tahun, dan63,49 ton/ha/tahun.

DISTRIBUSI HARA DALAM TANAH DAN PRODUKSI AKAR TANAMAN KELAPA SAWIT PADA METODE PEMUPUKAN YANG BERBEDA Edy Sigit Sutarta; Winarna; Muhammad Arif Yusuf
Jurnal Pertanian Tropik Vol. 4 No. 1 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

The effectiveness of fertilization could be influenced by the type of fertilizer and the rightmethod. There are several methods of fertilization, such as fertilizer applied in pockets andscattered. Relations fertilization method with root distribution of oil palm plantations andnutrients in the soil need to be known, so it can be determined in a more effective method offertilization for oil palm plantations. The observation was performed 1 year after application,includes observation of the soil (physical and chemical properties) and the observation of theroot (primary root, secondary, tertiary). Examples of soil and roots were taken at depths of00-20 cm, 20-40 cm, 40-60 cm, 60-80 cm, and 80-100 cm at a distance of 50 cm, 100 cm,150 cm, 200 cm, 250 cm, 300 cm, 350 cm, 400 cm from the base of the stem. The resultsshowed that the distribution of nutrients in the soil surface is greater than the layerunderneath and root production decreased due to lower soil layers.

PERTUMBUHAN TANAMAN KELAPA SAWIT DI LAHAN PASANG SURUT
Jurnal Pertanian Tropik Vol. 4 No. 1 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Limitations of potential land for the palm oil industry in Indonesia led to the development ofmature oil palm plantations leads to marginal lands with various limiting factors. One ofthe marginal lands that could potentially as an alternative for palm oil development in the tidalwetlands. The potential of tidal land for oil palm cultivation is mainly related to the flattopography and water availability throughout the year to minimize the possibility ofwater deficit. However, there are some critical issues that become limiting for thedevelopment of oil palm plantations, which severely hampered drainage, high salinity,the potential content of pyrite, peat depth and maturity, as well as greater investment forinfrastructure development. Growth and productivity of oil palm trees in addition to tidalland affected by the improvement in the fertility rate are also influenced by watermanagement. The observation of vegetative ( leaf area ) of oil palm plantations age of 2years in a swamp area pitu ( pyrite 80-100 cm depth ) showed that the water managementin the water level of 20-40 cm had greater leaf area ( 2.93 m2 ) compared with watermanagement 0-20 cm ( 2.40 m2 ) and 40-60 cm ( 2.21 m2 ) below the ground surface.According to Winarna ( 2007), the productivity of oil palm plantations aged 10 years onacid sulfate soil in North Sumatra with water management and good pyrite can reach therange of 20-24 tonnes FFB /ha/year. The results of the observations made by Harahapand Siregar (2004 ) at the age of oil palm plantation in Betong Krawo 5-6 years ( depth of pyrite 50-100 cm ) with water management and pyrite are not maximized, which indicatesthat the low productivity range 10.86 - 12.70 tonnes FFB /ha/year.

EVALUASI SIFAT FISIKA TANAH TYPIC HAPLUDULTS PADA EMPAT GENERASI TANAM KELAPA SAWIT PT SOCFIN INDONESIA DI KEBUN AEK LOBA KABUPATEN ASAHAN Edison Parulian Sihombing Sihombing
Jurnal Pertanian Tropik Vol. 4 No. 2 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Charges against oil palm plantations as the cause of soil degradation and as a ringleader ofenvironmental damage, drought land and take nutrients in large quantities make this studyimportant. The purpose of this study to determine the effect of oil palm cultivation on the four-generation of sustainable planting to changes in soil physical characteristics Typic hapludults. Description of soil profiles and sampling was conducted at four sites representinggenerations of planting oil palm. As the control mixed crop that has not been planted with oilpalm. Soil samples tested in the laboratory for each of the characteristics of soil physics.Results showed oil palm cultivation in soil Typic hapludults for four generations of plantscontinuously unchanged physical characteristics significant level. This shows that thecultivation of oil palm trees in a sustainable manner with the best management practicesystems PT Socfindo can maintain the physical characteristics of the soil.

Page 13 of 38 | Total Record : 378

11 12 13 14 15

Filter by Year

2014 2025

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

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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

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

Abstract

Abstract

Abstract

Abstract

Abstract

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