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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 58 Documents
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Intensitas Serangan dan Parasitoid Larva Ulat Api (Setothosea asigna van Eecke) (Lepidoptera : Limacocidae) di Kebun Kelapa Sawit di PT X. Desa Ukui Kecamatan Ukui Kabupaten Pelalawan Provinsi Riau Rustam, Rusli; Salbiah, Desita; Raimon, Raimon
Jurnal Agro Teknologi Tropika Vol 5, No 2 (2016)
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Abstract

Parasitoids is one of natural enemies that have the potential to be developed and play a role in pests control Setothosea asigna van Eecke on oil palm plants in the field. The pests high attacks intensity S. asigna effect on the production of palm oil. The role of parasitoids in the field reduce the existence of pests S. asigna so that palm oil plant damage could be reduced. This study attempts to find out the attack intensity larva S. asigna and the form parasitoids associated with larva S. asigna. The study has carried out on PT. X Ukui Village, Ukui District, Pelalawan Regency, Riau Province and Laboratory of Plants Pest Faculty of Agriculture, University of Riau. This research is a survey with a method of purposive sampling on locations which the most be attacked by S. asigna with heavy attack criteria, consisting of 3 sample plants, location on each 10%, 9 plants so that obtained 27 sample plants. The research results show the number of attack intensity is 37%. The number S. asigna 4,59 each midrib. Parasitoids associated with larva S. asigna has not been found.
Uji Beberapa Formulasi Pupuk Hayati Berbasis Limbah Tanaman pada Pembibitan Utama Kelapa Sawit (Elaeis Guineensis Jacq.) Puspita, Fifi; Sampurno, Sampurno; Yulia, Urfa
Jurnal Agro Teknologi Tropika Vol 5, No 1 (2016)
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Abstract

One of affected factor in oil palm seeds quality in main nursery was fertilization. One of organic fertilizer can be used was a biofertilizer. Theresearch aims to determine the effect and to obtain the best formulation of biofertilizer based on plant waste oil palm (Elaeis guineensis Jacq.) seeds growth in main nursery. The research was conducted from March to June 2014. This research used to Completely Randomized Design (CRD), consists of 5 treatments with 4 replication, then obtained 20 experimental units. Treatment given was: without biofertilizer formulation; Bacillus sp. + Pseudomonas fluorescens + liquid waste rice + 1 % chitin + 10 % molasses; Bacillus sp. + Pseudomonas fluorescens + tofu liquid waste+ 1 % chitin + 10 % molasses;Bacillus sp. + Pseudomonas fluorescens + sago liquid waste + 1 % chitin + 10 % molasses; Bacillus sp. + Pseudomonas fluorescens + PKS liquid waste + 1 % chitin + 10 % molasses. Parameters measured were increase of seed high, increase of midrib number, increase stump diameter, root volume, root crown ratio and dry seeds weight. Data were analyzed using ANOVA followed by DNMRT further test at 5% level. The results of the research showed, the several formulationof biofertilizers basedon plant waste effected on all observed parameters, but not effected on increase of midrib number. Biofertilizer formulations based on tofuliquid waste and PKS liquidwaste showed better results on all observed parameters.
Pengaruh Sitokinin (Kinetin) dan Auksin (2,4-D) dalam Media Induksi Murashige dan Skoog terhadap Perkembangan Eksplan Meristem Apikal Tunas Anakan Tanaman Sagu (Metroxylon sagu Rottb.) Nurhidayah, Tengku; Mardhiansyah, Muhammad; Mulyani, Desti
Jurnal Agro Teknologi Tropika Vol 6, No 1 (2017)
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This research aims to observe the effect of the concentration combination of cytokines (Kinetin) and auxin (2,4-D) in the induction medium MS to the development of the apical meristem explant shoots chicks of sago plant suckers. The research was carried out in the Laboratory of Plant Biotechnology Department of Agrotechnology Faculty of Agriculture, University of Riau, from October 2014 to January 2015. The experimental units were arranged in a completely randomized design consisting of six treatments: P1 = 0.1 mg/l kinetin + 5 mg/l 2,4-D; P2 = 0.1 mg/l kinetin + 10 mg/l 2,4-D; P3 = 0.1 mg/l kinetin + 15 mg/l 2,4-D; P4 = 0.2 mg/l kinetin + 5 mg/l 2,4-D; P5 = 0.2 mg/l kinetin + 10 mg/l 2,4-D; P6 = 0.2 mg/l kinetin + 15 mg/l 2,4-D and were replicated three times. Data were analyzed using analysis of variance and further analyzed with Duncan’s New Multiple Range Test at 5 % level. Parameters measured were shoot emergence time (days), number of shoots, shoots height (cm) and the number and percentage of shoots contaminated (%). The results showed that the addition of some concentration of kinetin and 2,4-D in MS induction medium affected on the development of the apical meristem explant shoots chicks of sago plant suckers. The best development of the apical meristem explant shoots of sago plant suckers was found on the combination of kinetin 0.2 mg/l + 10 mg/l 2,4-D.
Pola Perubahahan Beberapa Sifat Morfologis dan Fisiologis Buah Kelapa Sawit Harahap, Lukman Syaidy; Rasyad, Aslim; Isnaini, Isnaini; Khoiri, Muhammad Amrul
Jurnal Agro Teknologi Tropika Vol 5, No 2 (2016)
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Abstract

This study attempted  to determine the change of  morphological and  physiological traits of fruit palm oil during the fruit development until harvest. Forty eight fruit bunchs which antheses at the same day were selected at random from oil palm trees in the Experimental Station of PT Panca Surya Garden at Kubang Raya, Kampar. The fruit bunches were hand pollinated at 18 April 2015 and each was covered by pollination bag. Starting at 30 days after pollination (DAP), 3 fruits bunches were harvested at 15 day interval until fruits were ready to harvest. The change of morphological and physiological traits were observed  such as fresh weight, dry weight, fruit moisture content, thickness of mesocarp, fruit diameter, fruit volume and fruit color. The data analysis were performed by simple regression assingned day after pollination as independent variable and the traits observed as dependent variables.  The results indicated that change in morphological traits such as mesocarp thickness, fruit volume, fruit diameter occurred in similar pattern. Rapid change of  the value appeared from 30 to 75 DAP, followed by very slow increased from 75 to 150 DAP and finally the  rapid increase from 150 to 180 DAP. The pattern of dry weight and fresh weight change was similar, in which progressive increase was occurred  from 30 to 180 DAP then followed by decreased until 187 DAP. Moisture concentration of the fruit increased slightly from 30 to 45 DAP than decreased progressively from 45 to 187 DAP. Fruit color changed from dark purple to red purple and finally at harvest the color change to yellow red.
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.
Keragaan Produksi dan Organisme Pengganggu Tanaman Padi, Jagung, dan Kedelai di Provinsi Riau Rustam, Rustam
Jurnal Agro Teknologi Tropika Vol 5, No 1 (2016)
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Abstract

Production of food crops, especially rice, corn, and soybeans affected by plant pests. This study aims to analyze the performance of productions and pests of food crops in Riau province within the last 5 years. Secondary data including data on production and pest of food crops in the period 2011-2015 was obtained from the relevant institutions. To validation and complete the secondary data done excavation of primary data from some  speakers who are competent. Data were analyzed descriptively, tabulatively and simply to answer the research objectives. The results showed that there has been a decline in production of food crops in Riau Province in the years 2011 - 2015 are quite high, namely rice from 524.788 tonnes to 403.917 tonnes (down 23.0%), corn from 33.197 tonnes to 30.870 tonnes (down 7.0% ), and soybeans from 7.100 tons to 2.145 tons (down 69.8%). The decrease in production primarily due to lower harvested area, with the percentage of each of them: rice 26%, maize 12%, and soybeans 76%. The production decline is also due to pest attack. The type and level of pest attack in the period 2011-2015 fluctuated. In rice plants, there are eight types of pest led to crop failure (puso), namely bird, rat, rice bug, golden apple snail, stem borer, brown spot disease, blast, and bacteria leaf blight then 9 pests cause heavy damage, namely mole cricket, black bug, wild pig, leaf folder, brown planthopper, armyworm, sheath blight disease, and iron toxicity. The total area of rice pest attacks by puso category 161,4 ha and heavily damaged 124,05 ha. In corn, there are three types of pest causing puso, namely wild pig, downy mildew, and armyworm then 5 pests cause heavy damage, namely cob borer, stem borer, leaf rust, leaf blight and brown spot. The total area of corn pest attack with puso category 7,06 ha and heavily damaged 14,5 ha. For soybean plants, no pests have caused puso and only one type of pest causing heavy damage, namely aphids, with area damaged only 0,07 ha.
Perkembangaan Biji dan Komponen Hasil Tiga Verietas Kedelai (Glicyne max (L) Merrill) dengan Pemberian Giberelin Christian, Junjungan Rio; Rasyad, Aslim; Nurhidayah, Tengku
Jurnal Agro Teknologi Tropika Vol 5, No 1 (2016)
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Abstract

Plant growth regulator play an important role in contributing internal mechanisms of plant growth by interacting with some metabolic process, so that it could be required in enhancing crop production. The objective of this research was to observe the effect of giberelin on seed development, yield potential and seed quality of three soybean varieties. Afield experiment was conducted and arranged in split plot design with giberelin concentration as main plot and soybean varieties as subplot. Gibberellin concentration used consisted of 0 ppm, 125 ppm and 250 ppm. Three Soybean varieties were Grobogan, Wilis and Kaban. Parameter Observe were seed water concentration, seed dry weight, seed growth rate, effective filling period, number of poods per plant, grain weight per plant, grain yield m-2, 100-seed weight, seed protein and oil content. The result of this research indicated that application of Gibberellin did not significantly affect soybean seed development but increased soybean seed yield potential and slightly improved the quality of soybean seeds in 3 varieties tested.
Pengendalian Penyakit Layu Fusarium dengan Trichoderma sp. pada Dua Varietas Tomat Ghufron, Muzayyinul; Nurcahyanti, Suhartiningsih Dwi; Wahyuni, Wiwiek Sri
Jurnal Agro Teknologi Tropika Vol 6, No 1 (2017)
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Important disease have to be controlled on tomato plant is fusarium wilt. One environmentally friendly control technique is using Trichoderma sp. This study aims to determine the effect of Trichoderma sp. in controlling fusarium wilt on two varieties of tomatoes. The experimental design used was completely randomized design (CRD) two factors, namely the variety and control technique. Varieties factor consist of Tymoti (V1) and Rose (V2). Control technique factor consists of no control (P0), fungicide active ingredient Benomyl (P1), Trichoderma density of 106 spores/ml (P3), and Trichoderma density of 108 spores/ml (P4), so there are eight combinations of treatment and repeated 3 times. Data were analyzed by analysis of variance followed by Duncan test level of 5%. Fusarium sp. shows the characteristics of yellowish-white colonies with a crescent-shaped insulated conidia. Trichoderma sp. shows the characteristics of dark green colonies with spherical spores. The results of in vitro inhibition test showed that Trichoderma sp. abled to inhibit Fusarium sp. nearly 100%. Rose varieties showed disease severity 0% on all control techniques and Tymoti showed disease severity 100% on without control technique factor. Controlling by Trichoderma 106 spores/ml in Tymoti varieties can suppress the disease up to 13.89% and Trichoderma with density 106 spores/ml showed results of 1490 g per plant, weight of 38.98 g per fruit, and fruit production 4460 g.

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