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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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Application of Organic Liquid Fertilizer on Growth and Production of RiceVarieties (Oryza sativa L.) Hermawan Indra K.; Jonatan Ginting; Charloq
Jurnal Pertanian Tropik Vol. 5 No. 3 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

The aims of this study was to determine the effect of organic liquid fertilizer concentration and varieties on the growth and production of several varieties rice. This research had done at Desa Sendang Rejo, Kecamatan Binjai, North Sumatera with the 50 meters of sea level, from August until November 2016. This research used randomized block design with 2 factor treatments. The first factor was organic liquid fertilizer concentration with 4 levels 0 cc/ litre of water, 3 cc/liter of water, 6 cc/ litre of water and 9 cc/liter of water. The second factor was varieties with 3 levels Ciherang, Inpari 30 and Inpari 32. The result showed that the concentration organic liquid fertilizer significantly effect the plant height, tillers, 1000 grain weight and production per plant. Best result is obtained in treatment 9 cc/litre of water.

DAYA PREDASI DAN RESPON FUNGSIONAL Curinus coeruleus MULSANT (COLEOPTERA; COCCINELIDE) TERHADAP Paracoccus marginatus WILLIAMS DAN GRANARA DE WILLINK (HEMIPTERA;PSEUDOCOCCIDAE) DI RUMAH KACA Tri Yaninta Ginting; Darma bakti; Marheni
Jurnal Pertanian Tropik Vol. 4 No. 3 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Predation ability and functional respons of Curinus coeruleus Mulsant (Coleoptera ; Coccinelide) To Paracoccus marginatus (Hemiptera ; Pseudococcidae) in a greenhouse. The objective of the research was to know the predation ability of C. coeruleus to P.marginatus and functional response. This research was conducted from February to April 2017 in the greenhouse Faculty of Agriculture, University of Sumatera Utara Medan. The method used was Completely Randomized Design with and was held in 2 periods. The first period was Predation Ability Test and the second was the Functional response test. In Predation Ability Test there were one imagoes of C. coeruleus male and female which test with P. marginatus larvae instar II and instar III. In the Functional response test, there were one imagoes of C. coeruleus male and female which test with P. marginatus larvae instar II (from previous predation ability) with each of P. marginatus larvae differences was 5, 10, 15 and 20 P.marginatus imagoes. The results of this research showed that the highest Predation Ability percentage was showed on C. coeruleus female with 57.5% and the lowest was showed on C. coeruleus male with 20%. in Functional response test of C. coeruleus was showed on type I and low R with 0.5375.

PENGARUH PEMBERIAN BAHAN ORGANIK TERHADAP SIFAT KIMIA PADA TANAH SAWAH TERDEGRADASI DI KECAMATAN PANTAI LABU KABUPATEN DELI SERDANG Salman Alfarisi; Deni Elfiati; Abdul Rauf
Jurnal Pertanian Tropik Vol. 4 No. 3 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Organic fertilizers provide an advantage in increasing the growth and yield and can reduce the use of inorganic fertilizers. The study aims to analyze the land rehabilitation efforts relegated to improve the properties of the fields of chemistry, physics, and biology of the soil, with compare paddy soil conditions before and after rehabilitation. thereby increasing the productivity of rice in the District of Pantai Labu. The research was conducted in Durian, District, Pantai Labu, Deli Serdang, North Sumatra in April 2017 to July 2017. The study was arranged in a randomized block design (RAK) non-factorial experiment with five treatments and four replications. The treatments used are B0 = Control, B1 = 1.5%, B2 = 3%, B3 = 4.5%, B4 = 6%. The results showed that organic fertilizer can increase plant growth indicated by an increase in plant height. Organic fertilizers also increase the number of productive tillers, panicle length. Organic fertilizers also increase the number of grains per panicle and filled the grain.

MORFOFISIOLOGI AKAR MELALUI INTERVAL PENYIRAMAN, PEMBERIAN MIKORIZA DAN MODIFIKASI MEDIA TANAM PADA PEMBIBITAN KAKAO (Theobroma cacao L.) Dedi Kurniawan
Jurnal Pertanian Tropik Vol. 4 No. 3 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Cacao is an annual plant that plants in tropics and sensitive to the lack of water. This thing indicates the important role of media usage that can absorb and restrain in a large amount of water and also mycorrhizae role that can restrain the necessary of the plant water and increase the seedling's prosperity to stand in the water condition of the low ground. This objective of this experiment purposed to determine the watering interval, concentration of mycorrhizae, and the best growing media for cocoa seedlings. Experiments were carried out in the Kassa house Tobacco Deli and Cane Research Institute Medan, Province of North Sumatera, from July 2016 until October 2016. The design environment that was used in this study was Randomized Block Design with the factorial pattern. The first factor was the watering interval with three levels of watering interval: once of every 1, 3, and 5 days. The second factor was the inoculation of mycorrhizae consists of three levels: without inoculation of mycorrhizae, mycorrhizae inoculant 50 gr/plant and 100 gr/plant. The third factor was the growing media with four levels of growing media: soil, soil + fiber, soil + TKKS, and soil + sludge. Giving the watering interval once every 3 days and application of mycorrhizae with 100 gr/plant concentration on growing media of soil + fiber is the best treatment for the growth of cocoa seedlings.

Respons Pertumbuhan Dua Varietas Padi Lokal dengan Beberapa Komposisi Kompos Ryan Richo M; Chariani Hanum; Meiriani
Jurnal Pertanian Tropik Vol. 5 No. 3 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Pengembangan padi lokal saat ini masih kurang mendapat perhatian karena produktivitasnya masih tergolong rendah dibandingkan dengan padi sawah. Padahal, varietas lokal memiliki adaptasi kesesuaian yang tinggi terhadap daerah tertentu, varietas lokal juga perlu dipertahankan dan dilestarikan sebagai kekayaan plasma nutfah, sekaligus sumber keragaman genetik. Salah satu alternatif untuk meningkatkan pertumbuhan dan produktivitas padi lokal adalah dengan pengembangan teknologi penggunaan kompos. Tujuan dari penelitian ini adalah untuk mempelajari pertumbuhan dan produksi dua varietas padi lokal dengan pemberian beberapa komposisi kompos. Untuk itu dilakukan penelitian di Desa Paya Bakung Kec. Hamparan Perak, Kab. Deli Serdang dengan ketinggian tempat ± 25 meter di atas permukaan laut pada bulan Maret hingga September 2016. Penelitian ini dilakukan dengan menggunakan rancangan acak kelompok faktorial (RAK) dengan 2 faktor. Faktor pertama adalah media tanam kompos dengan 5 taraf yaitu: tanpa pemberian kompos (0 kg/plot) ; kompos blotong 3,6 kg/plot; kompos TKKS 3,6 kg/plot; kompos blotong 3,6 kg/plot + kompos TKKS 3,6kg/plot; kompos blotong 7,2 kg/plot + kompos TKKS 3,6 kg/plot; kompos 3,6 kg/plot + kompos TKKS 7,2 kg/plot. Faktor II adalah varietas padi gogo, terdiri dari varietas Sikembiri dan Sigendek-gendek. Hasil penelitian menunjukkan bahwa masing-masing varietas memiliki perbedaan tinggi tanaman sementara perlakuan kompos nyata meningkatkan tinggi tanaman, dan jumlah anakan per rumpun. Kombinasi perlakuan media tanaman (blotong 7,2 kg/plot + TKKS 3,6 kg/plot) pada varietas Sikembiri dan Sigendek gendek menghasilkan rataaan tertinggi dari tinggi tanaman.

PENENTUAN KOMPOSISI MEDIA TANAM TERBAIK UNTUK BUDIDAYA SELADA MERAH MENGGUNKANA SISTEM AUTPOT MODIFIKASI Sophia Dwiratna
Jurnal Pertanian Tropik Vol. 4 No. 3 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Autopot an irrigation device which is operated automatically and is capable of providing nutrition in plants without the need for electrical energy. The system is operated via a smart valve that is used to open and close automatically irrigation water by the water conditions in the network system, especially the water level in the network. Basic water level is used as a mechanical sensor for opening and closing the valve automatically without the aid of another power. With these advantages, autopot able to provide water and energy efficiency is very high on a commercial scale hydroponic cultivation. It's just that the system requires very high investment and must be imported. Therefore, this study was conducted to modify the Autopot use of materials and simple equipment and test its performance on the cultivation of red lettuce. Autopot modifications performed on tools, growing media and fertigation systems are smart valve replacement valves using a hole in the bottle that works with pressure and gravity. This study aims to determine the performance test auto pot modification results in the cultivation of red lettuce as well as to determine the ratio of planting media best on auto pot system modifications. Research carried out for 90 days in a greenhouse using descriptive methods. The results showed Autopot Modifications have an average efficiency of the provision of water by 75.86% - 88.05% and an average efficiency of water use by 51.43 kg / m3-88.72 kg / m3, this efficiency is high because of high dihasikan crop production with the use of water low. Planting media between rice husk and humus in the ratio of 50:50 compositions show results better plant growth compared with other growing media composition. plants with irrigation efficiency levels are very high as well minus the electric energy consumption.

PENINGKATAN PENDAPATAN PETANI KARET MENGGUNAKAN CABAI RAWIT (Capsicum frutescens Linn.) SEBAGAI TANAMAN SELA (Studi Kasus Di Desa Sembawa, Kecamatan Sembawa, Provinsi Sumatera Selatan) Sahuri
Jurnal Pertanian Tropik Vol. 4 No. 3 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

One alternative effort in order to increase the income of smallholders on immature rubber period was by practicing rubber based mix-cropping with other supporting plants. This research was conducted to observe the growth of girth and the enhanced income of smallholder using cayenne pepper as intercrops with the application of recommendation technology. This study was carried in dry land between rubber trees in Sembawa Village, Sembawa District, South Sumatra from June until October 2014. The treatment was of recommended technologies and farmer’s technologies. The results showed that the application of recommended technologies was significant effect on rubber growth, number of branches, fresh fruit production/plant, and fresh fruit production/1000 m2 ha except for plant height and harvesting time. However, overall the recommendation technology was better than farmer technology. Production of fresh fruit at 650,5 kg /1000 m² higher than farmer technology by 348,9 kg/1000 m². Gains derived by application of cayenne pepper farming technology recommended by IDR 5.456.000/1000 m² larger than IDR 2.704.200/1000 m² farmer technology with the B/C ratio of 1.27 and farming is feasible to be developed with MBCR value of 1.55.

PEMETAAN STATUS HARA P, pH dan C organik TANAH SAWAH DI DESA HILIBADALU KECAMATAN SOGAEADU KABUPATEN NIAS Charlan B Lombu
Jurnal Pertanian Tropik Vol. 4 No. 3 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

The purpose of this research is to survey and mapping nutrient status of total phosphate, available phosphate, soil pH and organic carbon at paddy fields Hilibadalu Village Sogaeadu District Nias Regency and its influence on rice production. Soil samples were analyzed at the Analytical Laboratory of PT Socfindo Indonesia North Sumatera Province. Which began in October to December 2016. The method used is the Free Grid Survey semi-detailed level survey and analysis of nutrient data total phosphate by Acid destruction method (HClO4), available phosphate by Bray II method, soil pH by H2O extraction and organic carbon by Walkley & black method and then interpret to the map nutrient status. The result of research showing that status total phosphate classified by 3 statuses such as medium (81,59 ha), high (81,15 ha) and very high (27,26 ha). Available phosphate classified in 3 nutrient status such as very low (39,11 ha), low (137,40 ha) and medium (13,49 ha). Soil pH classified into 2 statuses such as moderately acidic (30,16 ha) and strongly acidic (159,84 ha). Organic carbon classified by 3 nutrient statuses such as very low (3,06 ha), low (135,84 ha) and medium (51,10 ha). Available phosphate and organic carbon affect rice production in Hilibadalu Village Sogaeadu District Nias Regency.

EVALUASI KERAGAMAN GENETIK TANAMAN KELAPA SAWIT (Elaeis guineensis Jacq.) DI KEBUN PERCOBAAN PPKS BERDASARKAN PRIMER SSR (Simple Sequence Repeats) Riski Aulia
Jurnal Pertanian Tropik Vol. 4 No. 3 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

This research aimed to obtain information on genetic diversity populations of E. guineensis using SSR markers. This research was conducted in Biology Molecular Laboratory, Indonesian Oil Palm Research Institute, Marihat, Pematangsiantar, North Sumatera from March 2016 to November 2016. A total of 100 palm oil samples used in this research, including 20 samples from the populations of E. guineensis TR01S, including 20 samples from the populations of E. guineensis BJ022S, including 20 samples from the populations of E. guineensis BJ42S, including 20 samples from the populations of E. guineensis BO52S, and including 20 samples from the populations of E. guineensis MA19S. Calculation and Descriptive analysis in this research using software GeneMarker® version 2.40, software Power Marker V3.25, software NTSys version 2.1.1a and Microsoft Excell 2007. Research shows that the number of banding patterns detected 104 The banding patterns WITH range 8,7 per primary banding pattern and the size of the banding patterns ranging from 101 bp -328 bp. mEgCIR2569 primary is the widest primer to amplify DNA, the average of the percentage of polymorphism in the primer being used by 71% and the average value of. polymorphic information content(PIC) 0,63. At 77% genetic similarity dendogram 100 samples split into 3 groups. Lowest genetic similarity value is 75% or the highest genetic diversity was 25

KERAGAMAN MORFOLOGI DAN GENOTIPE TANAMAN ROSELLA (Hibiscus sabdariffa L.) GENERASI M2 HASIL IRADIASI SINAR GAMMA Amaluddin Syahputra
Jurnal Pertanian Tropik Vol. 4 No. 3 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

The aim of the research was to determine the genetic diversity and value inheritance on population distribution pattern M2 generation of Roselle (Hibiscus sabdariffa L.). The research was conducted at the Faculty of the Agriculture University of North Sumatra, Medan from September 2016 to March 2017. The data were analyzed using a t-analysis. The parameters observed were the percentage of germination, plant height, number of branches, canopy diameter, flower petal diameter, flower petal weight, fruit weight, number of flower petals per plant and harvest age. The results showed the population of 450 Gy generation M2 showed increasing crop productivity, while population 600 Gy generation M2 resulted in decreased productivity in plants and resulted in longer harvest age. The range of hereditability and genetic diversity coefficients ranging from medium to large is found in the number of branch characters in the population of 450 Gy, the flower weight of the petals, the weight of the fruit and the number of petals per plant in the population of 300 Gy, 450 Gy, and 600 Gy.

Page 15 of 38 | Total Record : 378

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Home Page

OAI Link

Editorial Team

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Reviewer

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Contact Name Benny Hidayat

Contact Email bendayat@gmail.com

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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

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Abstract

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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