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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 379 Documents

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Perbandingan Chitosan buatan dari hasil samping industri pembekuan udang dengan Chitosan komersil terhadap pengawetan mutu kesegaran ikan Nila (Oreochromis niloticus) Marnida Yusfiani; Ayu Diana; Anggi Ansari Ansari
Jurnal Pertanian Tropik Vol. 6 No. 3 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Bahan pengawet yang sering digunakan adalah bahan kimia, namun bila digunakan denganberlebihan dapat membahayakan kesehatan, sehingga bahan pengawet yang kami gunakan yaituchitosan sebagai bahan pengawet makanan yang alami dan aman digunakan. Boraks sebagaipengenyal dan formalin sebagai pengawet bakso masih ditemukan di masyarakat, sehingga perludicarikan alternatif penggantinya yang lebih aman dan sehat. Chitosan sebagai pengawet alamimerupakan salah satu alternatifnya. Tujuan penelitian ini adalah untuk mengetahui manfaat chitosanbuatan dan membandingkannya dengan chitosan komersil sebagai pengawetan dalammempertahankan mutu kesegaran pada ikan nila (Oreochromis niloticus). Metode dalam penelitianadalah metode eksperimen dengan melakukan pengawetan ikan nila. Berdasarkan karakteristikchitosan yang dibuat sudah mendekati dengan chitosan komersil karena perbedaan nilai pengujianyang dilakukan tidak jauh beda antara chitosan buatan dengan chitosan komersil.

Growth and production of cucumber (Cucumis sativus L.) that cultivaed using various types of mulch and different doses of goat manure Futichat A’mila Khoirunnisa; Eny Fuskhah
Jurnal Pertanian Tropik Vol. 6 No. 3 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Improvement of cultivation techniques and increasing soil fertility through the use of fertilizersneed to be considered to produce maximum cucumber plant growth and production. Theresearch was aimed to examine the response of the growth and production of cucumber plantsthat cultivated using various types of mulch and different doses of goat manure. The researchwas conducted on March - June 2019 at the Merbuh Village, Singorojo sub-district, Kendaldistrict of Central Java Province. A block randomized design factorial pattern 3 x 4 with threereplications was used throughout the experiment. The first factor consisted of treatment withoutmulch (M0), rice straw mulch (M1) and black silver plastic mulch (M2). The second factorconsisted of 4 levels of Nitrogen doses including P0 = Nitrogen, phosphorus, and potassium(NPK) recommendation for cucumber plant 160 kg N/ha; P1 = 177 kg N/ha; P2 = 354 kg N/ha;P3 = 531 kg N/ha respectively equal to 0, 10, 20, and 30 tons of manure/ha. The data obtainedwere analyzed using analysis of variance (ANOVA), and a further test was carried out on theparameters that showed a significant difference in the mean values of the treatment using theDuncan test. The results showed that the treatment of silver black plastic mulch increased thegrowth and production of cucumber plants. The treatment of goat manure at a dose of 10tons/ha had been able to increase all parameters and goat manure with a dose of 30 tons/hagave high results on all parameters of cucumber plants compared to that of the control. Thetreatment of black silver plastic mulch with a goat manure dose of 30 tons/ha gave high resultsin the number of fruit parameters.

Influence of seed skin condition, seed drying and concentrations of coconut water on seed viability of papaya seeds (Carica papaya L.) Anwar Parhimpunan; Haryati; Ferry Ezra T. Sitepu
Jurnal Pertanian Tropik Vol. 6 No. 2 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Dormansi seeds was caused on the physic of seeds, embryo physiologic or a combination of those two, it is needed the seed drying and concentrations of coconut water to solved dormancy. The purpose of this research is to know the influence of seed treatment, seed drying and concentrations of coconut water on seed viability of papaya seeds, used randomized block design with three factors. The first factor is seed treatment (sarcotesta and without sarcotesta), the second factor is seed drying (2, 4 and 6 day) and the third factor is concentrations of coconut water (0, 50 and 100 %). The results showed that seeds without sarcotesta increasing seed of water doses, normal seedling percentage, vigor index, seedling fresh weight, seedling dry weight, increased the rate of germination and reducing of not growt seedling percentage. Six days of seed drying significantly affected normal seedling percentage, vigor index and reducing of not growt seedling percentage. Fifty percents of concentration of coconut water significantly affected normal seedling percentage, vigor index and reducing of not growt seedling percentage. There is significantly affected interaction between seeds without sarcotesta and six days of seed drying to the rate of germination. There is significantly affected interaction between seeds without sarcotesta and fifty percents of concentrations of coconut water to seed of water doses. There is significantly affected interaction between seeds without sarcotesta, six days of seed drying and fifty percents of concentrations of coconut water to the rate of germination.

Growth and yield of kale (Brassica oleracea var. Acephala) on different vermicompost dosages and plant spacings Saraswati Kurnia Dewanti; Eny Fuskhah; Sutarno
Jurnal Pertanian Tropik Vol. 6 No. 3 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

This study aimed to examine the effect and interaction between vermicompost dosage and plantspacing on kale growth and yield. The research was held on March – June 2019 in Tegalsari,Sidomukti, Semarang Regency and at Ecology and Crop Production Laboratory, Faculty of Animaland Agricultural Sciences, Diponegoro University, Semarang. The study used a completelyrandomized factorial design 4 x 2 with 3 replications. The first factor was the vermicompost dosage of100 kg N/Ha (A1), 150 kg N/Ha (A2), 200 kg N/Ha (A3), and 250 kg N/Ha (A4). The second factorwas plant spacing of 20 x 40 cm (B1) and 30 x 40 cm (B2). Data were analyzed by variance andproceeded with DMRT test at level 5%. The observed variables were plant height, amount of leaves,chlorophyll, root length, fresh weight, and dry weight. The results showed that different dosages ofvermicompost and plant spacing only affected chlorophyll and root length of kale. The highestchlorophyll was attained at the treatment of 150 kg N/Ha vermicompost dosage and 20 x 30 cm plantspacing, equal to a treatment of 250 kg N/Ha vermicompost dosage and 30 x 40 cm plant spacing.The highest root length was attained at the treatment of 250 kg N/Ha vermicompost dosage and 30 x40 cm plant spacing, equal to the treatments of 100 kg N/Ha vermicompost dosage and 30 x 40 cmplant spacing and 200 kg N/Ha vermicompost dosage and 20 x 40 cm plant spacing.

Ketersediaan Hara Fosfor Akibat Pemberian Biochar Sekam Padi dan Pupuk Kandang Sapi pada Inceptisol Kuala Bekala Mayendra; Kemala Sari Lubis; Benny Hidayat
Jurnal Pertanian Tropik Vol. 6 No. 2 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Fosfor merupakan salah satu unsur hara makro yang sangat diperlukan oleh tanaman. Penelitian bertujuan untuk mengetahui ketersediaan hara fosfor akibat pemberian biochar sekam padi dan pupuk kandang sapi pada tanah Inceptisol Kwala Bekala yang dilakukan di Rumah Kasa. Penelitian ini menggunakan rancangan acak kelompok dengan dua faktor dan tiga ulangan. Faktor pertama biochar sekam padi dengan 4 taraf: 0 g/pot; 25 g/pot; 50 g/pot dan 75 g/pot. Faktor kedua pupuk kandang sapi dengan 4 taraf: 0 g/pot; 25 g/pot; 50 g/pot dan 75 g/pot. Hasil penelitian menunjukkan bahwa pemberian biochar sekam padi sebanyak 50 g/pot meningkatkan ketersediaan hara fosfor sebesar 10,95 ppm, pemberian pupuk kandang sapi sebanyak 50 g/pot meningkatkan ketersediaan hara fosfor sebesar 14,25 ppm, dan interaksi biochar sekam padi 50 g/pot dan pupuk kandang sapi 50 g/pot mampu meningkatkan ketersediaan hara fosfor sebesar 11,01 ppm.

The Effect Cuttings Part and Planting Media Composition to The Growth Seeds Dragon Fruit (Hylocereus costaricensis (Web) Britton & Rose) Adli Rifqi Alka Siregar; Lisa Mawarni; Chairani Hanum
Jurnal Pertanian Tropik Vol. 6 No. 2 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

The factors affect the success of cuttings is composition of planting media and position of planting materials. The experiment aims to determine response growth dragon fruit seeds on various composition of planting media. It was conducted in the field of research Agriculture Faculty, North Sumatra University, Medan with the height about 32 meters above sea level on April to August 2016. The design used factorial randomized block design with two factors and three repetitions. The first factor is part of the stem cuttings with three variety i.e. bottom stem, center stem, top stem and the second factor is planting media with four variety i.e. sand 100%, sand 50% + sludge 50%, sand 50% + empty palm fruit bunches (EPFB) 50%, sand 50% + sludge 25% + EPFB 25%. Data were analyzed using analysis of variance followed by Duncan’s multiple range test (DMRT). The results showed that part of the stem cuttings hasn’t effect to all observation parameters.The best planting media composition is present in the treatment sand 50% + sludge 25% + EPFB 25%. Interaction about both of factors hasn’t effect to all observation parameters.

Latex Flow Pattterns Several of Clone with the Use of Plant Growth Regulator to Production Try Koryati; Luthfi A. M. Siregar
Jurnal Pertanian Tropik Vol. 6 No. 2 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Slow or fast flow of latex when tapped affects the height and low production of latex. The physiological nature of the latex flow illustrates the speed and resistance of the latex flow rate per unit time. The purpose of the study was to determine the pattern of the flow rate of latex several rubber clones with the use of growth regulators and their relation to the production of latex in the initial tapping. The study was carried out in the PTP-N I Kso PTP-N III Karang Inong plantation, East Aceh. The research was arranged based on three factors of Nested Design, namely Clone factors with five factors, IAA + Kinetin hormone factor 7 factors and Paklobutrazol factors there were 3 factors. Some research results show that the pattern of each clone is different from the rate of flow of latex. In general, the clones tested were PB 260, PB 330, and IRR 5 clones, which showed a sharp decrease in latex flow, except the PB 340 and IRR 107 were still stable. PB 340 clone has the highest latex flow rate of 3.00 ml / minute in the first 10 minutes combination of H1P0 treatment. In the 90th minute, PB 340 still flows latex in several combinations of treatments with a latex flow rate in treatment (H4P1) of about 2.55 ml / minutes with a higher latex volume of 30-70 minutes for the same treatment combination. The highest production of latex per plant was obtained from the IRR 107 (K4) clone with the administration of 500 ppm IAA + 60 ppm kinetic (H4) and the application of soil paklobutrazol (P1) (K4H4P1) of 59.99 g / p / s, followed by PB clones 340 (K3H4P1)) of 49.80 g / p / s. The lowest production of latex per plant was found in PB 330 (K2H0P0) clones of (4.98 g / p / s).

Inventarisasi Dan Identifikasi Cendawan Patogen Terbawa Benih Jagung (Zea Mays L.) Lokal Asal Sumatera Utara Dengan Metode Blotter Test Andini Hanif; Rini Susanti
Jurnal Pertanian Tropik Vol. 6 No. 2 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Salah satu faktor utama penyebab penurunan produksi jagung adanya serangan OPT (Organisme Penganggu Tanaman) baik itu hama maupun penyakit yang disebabkan oleh mikrooragnisme terutama cendawan patogen. Cendawan patogen dapat menginfeksi langsung tanaman jagung ataupun menginfeksi benih jagung. Cendawan patogen yang terbawa pada benih dapat mengubah bentuk dan warna benih, hilangnya daya kecambah dan vigor benih, selain itu cendawan patogen yang terbawa pada benih yang tumbuh berpotensi menyebabkan penyakit pada saat perkecambahan atau tanaman dewasa, sehingga tanaman menjadi sakit dan mengurangi hasil produksi. Penelitian ini menggunakan metode standar ISTA (International Seed Testing Association). Isolasi cendawan patogen terbawa benih dilakukan dengan metode blotter test yaitu menginkubasi benih di atas kertas saring lembab, selanjutnya cendawan patogen yang muncul didentifikasi. Cendawan patogen yang diperoleh diuji patogenisitasnya terhadap benih jagung. Hasil deteksi dan identifikasi cendawan pathogen terbawa benih jagung lokal diperoleh cendawan Fusarium sp. yang paling tinggi persentasenya menginfeksi benih jagung varietas lokal asal Sumatera Utara yaitu sebesar 78,75% untuk benih jagung varietas lokal asal Deli serdang, 14,5% untuk benih jagung varietas lokal asal Langkat dan 59,5% untuk benih jagung varietas lokal asal Karo.

The Increasing Production of Soybean Plants (Glycine max L.) Based on Result Target’s and Nutrient Index Michael Gusman Sianturi; Erwin Masrul Harahap; Hamidah Hanum
Jurnal Pertanian Tropik Vol. 6 No. 2 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

The aim of this research was to prove the giving fertilizer with dosage that produces seed production of soybean (Glycine max L.) 3 ton/ha and studying soil fertility through the nutrient indexs. The research was conducted in June 2017 until September 2017 at the market land of 1 Tanjung Sari, Medan Selayang sub-district. The research design is Factorial Random Design with two factors. The first factor is doses of fertilizer with the target of P1 = target 2 ton/ha; P2 = target 3 ton/ha; P3 = target of 4 ton/ha, second factor is treatment of soil nutrient index consist of B1 = 0,8 (100% less 20%); B2 = 0.9 (100% less 10%); B3 = 1 (100% standard nutrient index); B4 = 1.1 (100% plus 10%); B5 = 1.2 (100% plus 20%). The results showed that interaction of fertilizer based result target dose 3 ton/ha and nutrient index 0,9 (Urea : 45 kg/ha, SP-36: 90 kg/ha, KCL: 27 kg/ha, Phonska: 90 kg/ha, Dolomite: 900 kg/ha) reaches production of 2.86 tons/ha. The soil nutrient index found in B2 = 90% (fertilizer dose reduced by 10%) showed that the soil was fertile and gave the nutrient 10%.

Pengaruh Pemberian Pupuk KCl dan Kompos Jerami pada Pertumbuhan dan Produksi Bawang Merah (Allium ascalonicum L.) Andika Leorensius Situmeang; T Irmansyah; Ratna Rosanty Lahay
Jurnal Pertanian Tropik Vol. 6 No. 2 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Produksi tanaman bawang merah tahun 2015 menurun dibandingkan tahun 2014 sebesar 0,39 %. Dan produktifitas lahan menurun sebesar 1,56 % sehingga perlu dilakukan usaha untuk menaikkan produksi. Salah satu caranya yaitu dengan melakukan pemupukan baik organik maupun anorganik. Penelitian ini dilakukan untuk mengetahui pertumbuhan dan produksi bawang merah (Allium ascalonicum L.) terhadap pemberian pupuk KCl dan kompos jerami padi. Penelitian ini dilaksanakan di Jalan Setiabudi Gang Rambutan no.11 Tanjung Sari Medan, mulai bulan Juli sampai dengan September 2017 dengan menggunakan Rancangan Acak Kelompok Faktorial dengan 2 faktor perlakuan yaitu pupuk KCl pada 4 taraf : 0; 50; 100; 150 kg/ha dan kompos jerami padi pada 4 taraf : 0; 10; 20; 30 ton/ha. Parameter yang diamati adalah panjang tanaman 2 sampai 6 minggu setelah tanam (MST), jumlah siung, bobot basah tajuk per sampel, dan bobot kering umbi/m2. Hasil penelitian menunjukkan bahwa perlakuan pupuk KCl berpengaruh tidak nyata terhadap semua peubah amatan. Perlakuan kompos jerami padi berpengaruh nyata terhadap peubah amatan bobot basah tajuk per sampel dan bobot kering umbi/m2 namun berpengaruh tidak nyata terhadap peubah amatan lainnya. Bobot kering umbi /m2 diperoleh pada pemberian kompos jerami padi 20 ton/ha. Interaksi antara pupuk KCl dan kompos jerami padi berpengaruh tidak nyata terhadap semua peubah amatan.

Page 21 of 38 | Total Record : 379

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Benny Hidayat

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03, Prof. A. Sofyan Street Campus USU, Medan 20155- Indonesia

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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

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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