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Benny Hidayat
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jpt@gmail.com
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03, Prof. A. Sofyan Street Campus USU, Medan 20155- Indonesia
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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 9 Documents
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Search results for , issue "Vol. 4 No. 2 (2017): JURNAL PERTANIAN TROPIK" : 9 Documents clear
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (243.794 KB) | DOI: 10.32734/jpt.v4i2.3076

Abstract

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.
PENGGUNAAN BERBAGAI PLASMA NUTFAH KELAPA SAWIT KOLEKSI PPKS RIAU TERHADAP POPULASI SERANGGA PENYERBUK KELAPA SAWIT Amnesty Situmeang Situmeang
Jurnal Pertanian Tropik Vol. 4 No. 2 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (154.685 KB) | DOI: 10.32734/jpt.v4i2.3077

Abstract

This research was to study the use of various oil palm germplasm collection of Indonesian Oil PalmResearch Institute (IOPRI) Riau on a population of insect pollinators (Elaeidobius kamerunicus Faust.)in Riau Province Kalianta Gardens. The research was conducted from May until July 2016 bya purposive sampling method. The results showed that E. kamerunicus total population of 9,123head/0.5ha with E. kamerunicus male sex ratio of 3,160 head/0.5ha and females amounted to 5,963heads/0.5ha in male flowers and a total population of 433 head/0.5ha with a ratio E. kamerunicusmale genitals of 182 head/0.5ha and females of 251 head/0.5ha in the female flowers. The populationof E. kamerunicus on more male flowers than the female flowers. Germplasm highest in V3 (AccessionWild Angola) on the male flowers and V1 (Elaeis guineensis) in the female flowers, while the lowestgermplasm on male and female flowers are V7 (Elaeis oleifera).
EFISIENSI PENGGUNAAN PUPUK ANORGANIK AKIBAT PENGGUNAAN PUPUK ORGANIK TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN JAGUNG (Zea mays L) DI TANAH ULTISOL Roswita Oesman
Jurnal Pertanian Tropik Vol. 4 No. 2 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (180.489 KB) | DOI: 10.32734/jpt.v4i2.3078

Abstract

The research effects to obtain inorganic fertilizer use efficiency to the use of organic fertilizer onthe growth and yield of maize (Zea mays L) in Ultisol. This research was conductedat the experimental field, the Laboratory for Research and Technology Faculty ofAgriculture, University of North Sumatra, Medan from August to November 2016. Thethe design used in this study is a randomized block design factorial using two factors:organic fertilizers (O) with treatment as follows: O0 = Without organic fertilizers,O1 = 100% of doses of organic fertilizer, O2 = 75% of doses of organic fertilizer, O3= 50% of doses of organic fertilizer, O4 = 25% of doses of organic fertilizer.inorganic fertilizer application (A) with treatment as follows: A0 = Withoutinorganic fertilizers, A1 = 100% of doses of inorganic fertilizer recommendations,A2 = 75% of doses of inorganic fertilizer recommendations, A3 = 50% of doses ofinorganic fertilizer recommendations, A4 = 25% of doses of inorganic fertilizerrecommendations. The variables measured were: plant height, shoot dry weight, rootdry weight, dry seed weight. Results showed that 100% Organic fertilizer canincrease growth and yield of corn were higher in soil ultisol. This is indicated bytheir real influence on the growth of plant height ages 8 and 12 WAP, the weight ofdry seed, uptake of N and P, but no significant effect on shoot dry weight, root dryweight and uptake K. Inorganic fertilizer application of 100% can increase growthand yield of corn was higher in soil ultisol. This is indicated by their real influenceon the growth of plant height age 8 WAP, root dry weight and the weight of dry seed,but did not significantly affect plant height age of 12 WAP, shoot dry weight, uptakeof N, P and K. The interaction of the two combination treatments showed significantlyeffect on the weight of dry seed.
POTENSI PRODUKSI HIJAUAN PADA PASTURA ALAMI DI PULAU SAMOSIR KABUPATEN SAMOSIR Nevy D. Hanafi
Jurnal Pertanian Tropik Vol. 4 No. 2 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (375.194 KB) | DOI: 10.32734/jpt.v4i2.3079

Abstract

Samosir island has potential ruminant livestock development include beef cattle, buffaloes, goatsand horses. This study aims to determine the potential of the forage production on natural pasturesin Samosir, Samosir regency. Research carried on in Samosir in July to October 2016. Assessmentof Forage Feed on pasture land in Samosir includes determining the locations of the study based onaltitude, sampling forages and forage calculate productivity. Location of the study amounted to 15points, at an altitude of 905-1200 meters above sea level there are nine (9) research sites thatSimbolon, Simanindo, Unjur, Garoga, Marlumba, Suhisuhi Dolok, Parbaba Dolok, Onan Runggu,Sabungan Nihuta. While at an altitude up 1200 m above sea level, there are 6 locations includingresearch Tanjungan, Sidihoni, Lintong Sunut, Desa Lumban Simbolon, Sipira 32, dan Sipira 33. Theresults showed that the fresh Production of highest at an altitude 905-1200 meters above sea levelwas 2.048,27 kg/ha/harvest, and production dry matter is 814,43 kg/ha/harvest. Temporarily themean production of fresh ingredients at an altitude up 1200 m above sea level is 1.696,1 kg/ha/harvestand production dry matter is 739,28 kg/ha/harvest. Conclusion altitude on pasture gives effect to theproduction of fresh and dry matter forage.
TABELA AND FISH FARMING ARE LOCAL WISDOMS ETHNIC SUMATERA FOR SUPPORTED ON SUSTAINABLE AGRICULTURE IN NORTH SUMATERA, INDONESIA Ameilia Zuliyanti Siregar
Jurnal Pertanian Tropik Vol. 4 No. 2 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (138.676 KB) | DOI: 10.32734/jpt.v4i2.3080

Abstract

Direct seeding (Tabela) and fish farming (Minapadi), traditional methods used for producepaddy plantation and animal proteins for sustainable food security in Northern Sumatra weredone. This study was conducted using a combination of methods to the study of literature(data collectively in USU Library and library of USM) and observations in the fields (lowlandand terrace from Langkat district and Smalungun district were conducted since December2016 to March 2017. As much as two types of rice crops (Ciherang and IR 64) are cultivatedshowed the status (prey and predator) of insects in Langkat and Simalungun districtsrespectively. Direct Seed (Tabela) in Langkat agroecosystems applied to irrigated rice, rainfed andtidal land is an alternative model of technology and integrated crop management approach isenvironmentally friendly. Besides, fish farming (Minapadi) was done in Simalungun districtconsumed by the family farmers and partly as sold as additional revenue. The problems areidentified from Tabela and Minapadi farmers in Langkat and Simalungun, consist of technologyadvice is difficult; do not answer problems; innovation technology creates new problems forfarmers due to lack of appropriate with the socio-economic-culture;application of technology requires a high cost while remuneration derived less adequate;systems and counseling strategies are still weak so not able to convey the message properly;indifference farmers to offer new technologies; the existence of uncertainty in control ofresources. Food security system with integrated farming through seeded fields and fish farmingthe concept on three of the management, such as integrated crop management, integrated pestmanagement and integrated nutrient management based on local knowledge should be cultivatedand preserved in Indonesia. The importance of communication, improve interpretation andknowledge of paddy farmers, the adoption of technology and infrastructure empowerment inagriculture, especially in North of Sumatera was increasing the productivity of rice farmers inNorthern Sumatra.
DISTRIBUSI DAN IDENTIFIKASI POPULASI SINTRONG (Crossocephalum crepidiodes.Benth) RESISTEN PARAKUAT PADA LAHAN JAGUNG (Zea mays) DI KABUPATEN DAIRI Berton Sianturi
Jurnal Pertanian Tropik Vol. 4 No. 2 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (329.26 KB) | DOI: 10.32734/jpt.v4i2.3081

Abstract

Crassocephalum crepidioides on Cornfields in Dairi Regency had been reported tobecome more difficult to control using paraquat. The objective of the research was todetermine the characteristics and the distribution of C.crepidioides resistant to paraquatin cornfields. The experiment was carried out in two steps, the first step was screeningthe population of C. crepidioides with paraquat at the recommended dose, and the secondstep, dose-response experiment for the resistance level of C. crepidioides population withdose 0, 76, 152, 304,5, 609, 1218, and 2436 g.ai /ha. In the first step experiment, paraquatdichloride was applied at 280 g.ai/ha. The treatments were arranged in a randomized blockdesign with 3 replication. The second step experiment was that the resistant populationsconfirmed in the first experiment were sprayed for their dose-response. The treatmentswere arranged in a randomized complete block design (CRBD). The results showed thatof 30 populations of C. crepidiodes, 19 populations (63.3%) were categorized to beresistant with the mortality ranging from 10.84% to 52.08%, and 11 populations (36.7%),was categorized as high resistance with mortality of 0% to 9.21%. The level ofresistance (R/S) of R-C25, R-C27, and R-C30 populations of C. crepidioides were 12,3,14,86, and 24,83 times consecutively, compared with the susceptible population. Thenumber of C. crepidioides chlorophyl leaves in susceptible populations was significantlylower than that of a resistant populations.
KAJIAN PRODUKTIVITAS TANAMAN AREN BERDASARKAN SIFAT MORFOLOGI TANAMAN PADA SKUEN TINGGI TEMPAT DI KABUPATEN TAPANULI SELATAN Darmadi Erwin Harahap
Jurnal Pertanian Tropik Vol. 4 No. 2 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (244.468 KB) | DOI: 10.32734/jpt.v4i2.3084

Abstract

Penelitian ini bertujuan Untuk mengetahui hubungan sifat morfologi tanamanterhadap produksinya berdasarkan skuen ketinggian tempat di KabupatenTapanuli Selatan. Lokasi yang menjadi kajian penelitian ini berdasarkan skuentinggi tempat di Daerah Kabupaten Tapanuli Selatan. Sample tanaman diambil diDesa Situmba dan Desa Panabari Kecamatan Tano Tombangan Angkola denganketinggian 0 – 400 m dpl, Desa Pasar Sempurna, Desa Gunungtua, Desa AekNabara Kecamatan Marancar dengan ketinggian 400 – 800 m dpl dan DesaSialaman Julu, Desa Sialaman Jae Kecamatan Sipirok dengan ketinggian > 800 mdpl. Pengamatan terhadap perkembangan morfologi tanaman aren di lapangandilakukan terhadap parameter Tinggi Tanaman, Umur Tanamam, DiameterBatang, Umur Sadapan, Tingkatan Malai, dan Jumlah Klorofil a dan b. Hasilpenelitian menunjukkan bahwa yang paling berpengaruh terhadap produksiproduksi nira adalah Tinggi Tanaman dan Umur tanaman (37,2 %), sedangkanuntuk produksi gula yang paling berpengaruh adalah tinggi tanaman (29,2 %).
Potensi Jamur Endofit terhadap Pertumbuhan dan Produksi Tanaman Cabai (Capsicum annum) Yenni Marnita; Lisnawita; Hasanuddin
Jurnal Pertanian Tropik Vol. 4 No. 2 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (423.204 KB) | DOI: 10.32734/jpt.v4i2.3085

Abstract

Jamur endofit merupakan jamur yang hidup di dalam jaringan tanaman sehat tanpa menyebabkangejala atau kerusakan pada tanaman inang. Penelitian ini bertujuan untuk menguji potensi jamurendofit terhadap pertumbuhan dan produksi tanaman cabai melalui metode aplikasi perendamanbenih, perendaman akar, penyemprotan ke daun dan penyemprotan ke buah. Rancangan yangdigunakan adalah Rancangan Acak Kelompok Faktorial dengan 2 faktor, 4 perlakuan dan 3 kaliulangan. Faktor pertama adalah cara aplikasi: perendaman benih (A1), perendaman akar (A2),penyemprotan pada daun (A3), dan penyemprotan pada buah (A4) sedangkan faktor kedua adalahasal isolat: tanpa isolat jamur endofit (E0), isolat jamur endofit dari akar cabai (E1), isolat jamurendofit dari batang cabai (E2), dan isolat jamur endofit dari buah cabai (E3). Aplikasi melaluiperendaman akar dan penyemprotan daun dengan Penicillium sp. memberikan hasil yang baikterhadap pertumbuhan dan aplikasi melalui daun dengan Geotrichum sp. dapat meningkatkanproduksi cabai, sehingga berpotensi untuk dikembangkan sebagai agens hayati.
KOLONI SEMUT Myopopone castanea SMITH (hymenoptera : formicidae) SEBAGAI PREDATOR Oryctes Rhinoceros L. (coleoptera: scarabaidae) PADA ONGGOKAN BATANG SAWIT DI LABORATORIUM Rini Susanti; Darma Bakti; Marheni
Jurnal Pertanian Tropik Vol. 4 No. 2 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (180.698 KB) | DOI: 10.32734/jpt.v4i2.3086

Abstract

Ants are one potential predator of O. rhinoceros L. (Coleoptera: Scarabaidae). The purpose of this study wasto determine the ants of colony Mypoponae castanea as predators of the palm stem borer O. rhinoceros(Coleoptera: Scarabaidae) on a pile of oil palm trunk in the laboratory. This research was conducted at theLaboratory of Pest Plant of the Faculty of Agriculture, University of Sumatra Utara, Medan (± 25 m abovesea level). This research was conducted in November 2014 to Agustus 2015. The results showed a colony ofM. castanea had one queen with 5-6 male ants and 60-70 worker ants in the laboratory.

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