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INDONESIA
Jurnal Agro Teknologi Tropika
Published by Universitas Riau
ISSN : -     EISSN : 23376562     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Agroteknologi Tropika memuat hasil-hasil penelitian mutakhir (5 tahun terakhir), ulasan singkat (review), analisis kebijakan atau catatan penelitian singkat (research note) mengenai teknik percobaan, alat, pengamatan, dan hasil awal percobaan (preliminary result) terkait bidang Ilmu Pertanian seperti : Agronomi, Pemuliaan Tanaman, Ilmu Tanah, Proteksi Tanaman, Mikrobiologi Pertanian, dan bidang ilmu pertanian terkait lainnya. Jurnal Agroteknologi Tropika terbit dua kali dalam setahun pada bulan Januari dan Juni.
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue " Vol 6, No 2 (2017)" : 6 Documents clear
Pengaruh Kosentrasi Mutagen Sodium Azida (NaN3) terhadap Daya Kecambah dan Keragaan Bibit Padi Gogo Varietas Jambek Rotan Generasi M-1 Nurhidayah, Tengku; Ali, Muhammad; Dhamila, Asha
Jurnal Agro Teknologi Tropika Vol 6, No 2 (2017)
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The experiment aims to observe the effect of mutagen concentration of sodium azide to the germination and seedling growth performance of upland rice varieties Jambek Rotan generation M-1 and the difference seedling growth of upland rice varieties Jambek Rotan on the generation of M-1 by application Sodium azide some mutagen concentration. The experiment was conducted in an area behind the Soil Laboratory , Faculty of Agriculture , University of Riau , from May to July 2015. Research arranged experimentally using a Completely Randomized Design (CRD), which consists of 5 treatments concentration of sodium azide (SA) , ie 0.0 mM SA , 0.5 mM SA, 1.0 mM SA, 1.5 mM SA and 2.0 mM SA and each treatment was replicated four times. Parameters observed were the percentage of live seedling , seedling height, number of leaves and the number of tillers. The results showed that the of sodium azide at a concentration of 2.0 mM produce the lowest percentage life seedling, but tended to produce the lower seedling height and the more number of tillers.
Pengaruh Varietas dan Dosis Pupuk Kalium terhadap Perkembangan Penyakit Bulai (Peronosclerospora maydis Rac.Saw), Pertumbuhan dan Produksi Jagung Habibi, Ach.; Nurcahyanti, Suhartiningsih Dwi; Majid, Abdul
Jurnal Agro Teknologi Tropika Vol 6, No 2 (2017)
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Downy mildew is one of the important diseases in maize. This disease has spread in Indonesia, even in certain areas downy mildew is already endemic. Downy mildew can cause crop failure, especially when damaging corn crops susceptible varieties and at a young age. The research objective was to determine the effect of the three varieties of corn and potash fertilizers to the development of downy mildew, plant height, number of leaves, and corn production. This research was conducted at the home of wire, Dukuhsia Rambigundam Rambipuji District of Jember, in March to June 2016. This study was onducted by completely randomized design (CRD) factorial consist of two factors, the first factor was the maize varieties, consists of 3 levels: Asian Honey (V1), Pioneer-21 (V2), Pacific 339 (V3). The second factor was the dose of fertilizer which consists of 4 levels: K0 (without fertilizer), K1 (1 gram/plant), K2 (2 gram/plant), K3 (3 gram/plant). Asian maize varieties Honey and potassium fertilizer dose of 3 grams / plant respectively indicate the best treatment in suppressing the development of downy mildew, growth and production of maize.
Isolasi dan Karakterisasi Morfologi dan Fisiologi Bakteri Bacillus sp. Endofitik dari Tanaman Kelapa Sawit (Elaeis guineensis Jacq.) Puspita, Fifi; Ali, Muhammad; Pratama, Ridho
Jurnal Agro Teknologi Tropika Vol 6, No 2 (2017)
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Endophytic bacteria are bacteria that infect and live in plant tissue, including oil palm plant tissue. There are many species of endophytic bacteria living inside tissue oil palm plant which play a beneficial role for plant. One of the bacteria is Bacillus sp. Bacillus sp. can be used as a biological pesticide and biological fertilizers which is useful for plants. The purpose of the research is to observe the characteristics of the endophytic Bacillus sp. Plants samples was taken by survey method. The location of sampling was at the district of Asahan North Sumatera. Isolation was performed from oil palm plant organs such as root, stems and leaves of oil palm plants.  Results showed that the morphological characterization such as colony color, colonies form and  colonies edges of the bacteria had similarities each others, but there was a difference on the surface of morphology colony. Six isolates had a convex surface and  six  isolates had a flat surface. Physiology assay results such as catalase test, oxidase test, starch hydrolysis test, motility test and test of temperature on the growth of the bacteria showed a positive result on the each isolate. Characterization results showed a morphological and physiological similarities to the characteristics of Bacillus subtillis.
Seleksi Genotipe Kedelai (Glycine max L. Merril) untuk Ketahanan terhadap Penggerek Polong Kedelai, Etiella zinckenella Treitschke (Lepidoptera: Pyralidae) Pasaribu, Febrio; Salbiah, Desita
Jurnal Agro Teknologi Tropika Vol 6, No 2 (2017)
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This study was intended to determine soybean genotypes which resistant to soybean pod borer (Etiella zinckenella Treitschke) in Riau. A field experiment was established by randomized complete block design where six cultivars of soybean including Gema, Grobogan, Kaba, Willis, lines KM 19 and KM 25 are planted in plots of 2.5 m in length and 2 m in wide. The parameters observed the number of larva pest per plant, percentage of damage pods per plant, percentage of damage seeds per plant, number of pods per plant, number of seeds per plant, and yield per m2. The data were then analyzed by using analysis of variance and then performed Duncan new multiple range test at 5% level. The results showed the differences among genotypic in the level of resistance to pod borer with variations between moderately resistant to moderately susceptible. Genotype KM 19 and Willis were soybean genotypes that were more resistant to soybean pod borer,  E. zinckenella Treitschke as indicated by low percentage of pods and seeds attacked. Selection index calculated also showed that genotype KM 19 and Willis had lower value of selection index compared to other genotypes.  This study implied that both Wilis and KM 19 were potential to be used as parental genotipes in a plant breeding program to develop resistant genotypes to soybean pod borer.
Uji Dosis Tepung Buah Sirih Hutan (Piper Aduncum L.) terhadap Mortalitas Hama Sitophilus Oryzae L. Pada Beras di Penyimpanan Rustam, Rusli; Andrianto, Benny Salvino; Sutikno, Agus
Jurnal Agro Teknologi Tropika Vol 6, No 2 (2017)
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Research aims to obtain dose of spiked pepper fruit flour (Piper aduncum L.) better of  imago S. oryzae on the rice. Research conducted at the laboratory of plant pests, Faculty of Agriculture, University of Riau from May to June 2015. The Research was conducted experimentally by using completely randomized design (CRD), which consists of 5 treatments, where each treatments was repeated 4 times to obtain 20 units experiment. The treatment used in the research is (0 g/ 100 g, 2 g/ 100 g, 4 g/ 100 g, 6 g/ 100 g, 8 g/ 100 g of rice). Data obtained analyzed statistically using analysis of variance followed by least significant difference (LSD) at 5%. Dose applications of spiked pepper fruit flour at doses 6 g/ 100 g rice better of  imago S. oryzae with lethal time50 24,5 hour and mortality by 97,5% inhibit the growth of the population, shrinkage weight of rice, and lethal dose95 by 4,5%.
Multiplikasi Tunas Nanas Bogor (Ananas comosus (L.) Merr.) cv. Queen dengan Menggunakan Hormon Indole Acetic Acid (IAA) dan Benzyl Amino Purin (BAP ) Mahadi, Imam
Jurnal Agro Teknologi Tropika Vol 6, No 2 (2017)
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Abstract

Pineapple Bogor fruits (Ananas comosus (L.) Merr.) cv. Queen or Nanas bogor is tropical fruits included horticultural crops. This fruit is often used to make juices, flavorings and food ingredients. This reserach aimed to determine the effect of IAA and BAP on shoot multiplication Bogor pineapple fruits on MS medium. The study was conducted using methode completely randomized design (CRD) factorial with two factors and three replications. The first factor is the concentration of IAA with 4 level is 0-1.5 ppm. The second factor is the BAP with 4 degree of concentration is 0-3 ppm. Parameters measured were while emerging shoots, number of shoots and shoots high. The data were number of shoots and shoots high were analyzed by ANOVA and tested further by DMRT at 5% level, while the shoots emerge as a descriptive made by counting the days when buds first appear with a marked greenish white bumps on the surface explants. Theresults showed that a growing percentage of explants is 100%, the currently the fastest emerging shoots 3.67 after initiated  on treatment A0B2, A0, 5B1  and A1B1. The mean number of shoots of nanas bogor cv. Queen highest found in treatment A0,5B3 is 12. The mean height is 5 cm tallest shoots in treatment A1B0. The results of this research concluded that the combination treatment of A0,5B3  is the best treatment combination in the multiplication shoots of nanas bogor cv. Queen.

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