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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.
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Articles 58 Documents
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Evaluasi Daya Gabung Hibrida Hasil Persilangan Half Dialel Lima Genotipe Cabai (Capsicum annuum L.) di Lahan Gambut Armaini, Armaini; Deviona, Deviona; Wardati, Wardati
Jurnal Agro Teknologi Tropika Vol 4, No 2 (2015)
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The objective of this study is to determine the value of general combining ability, and specific combining abilityhybrids of parental crosses by half-dialel scheme on the peat land. The experiment was carried out on the peatlandRimbo Panjang Faculty of Agriculture Riau University.The genotypes consisting of 15 crosses from IPB half dialelcrosses chili in three replicates. To analyze general combining ability (GCA) or specific combining ability (SCA)influence of the variable, analysis of variance for diallel cross according to Griffing’s method 2 was used. The resultshows, the highest value of general combining ability of stem diameter, fruit diameter, fruit weight and total weight perfruit were obtained from genotype C5. Genotype C159 has high value of general combining ability of plant height, stemdichotomous and crown width, and Genotype C 120 has high value of general combining ability of length fruit.Meanwhile the highest specific combining ability based on yield component is genotype C5xC120
Pertumbuhan Bibit Kopi Robusta (Coffea canephora Pierre) dengan Pemberian Beberapa Jenis Kompos Ali, Muhammad; Khoiri, M. Amrul; Rachim, Kamalia
Jurnal Agro Teknologi Tropika Vol 4, No 1 (2015)
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The quality of seedling determines the growth and the productivity of plants in the field seedling. Optimum growthof seedling can be obtained through good nursery system. The physical, chemical and biological properties of nurserymedium can be improved by application of organic fertilizer, such as compost. This study aims to the effect of severaltypes of compost and get best compost dosage in inducing seedlings of Robusta coffee (Coffea canephora Pierre).Research has been conducted experimentally using a completely randomized design (CRD) with 5 treatments and 3replications. Each experimental unit consisted of 3 seedlings where 2 seedlings taken as sample. Data were analyzedstatistically using analysis of variance and means were tested by Duncan’s New Multiple Range Test at 5% level.Parameters observed were the increase of plant height (cm), the leaf number, leaf area, stem circle (cm) and the ratio ofthe root crown. The results indicated that the application of some compost affected the increase of seedling height, theleaf number and leaf area. Trichokompos gave the better seedling height and leaf number comparing to other compost.
Pengaruh Perubahan Penggunaan Lahan Hutan Alam Menjadi Hutan Tanaman Industri (HTI) Acacia crassicarpa terhadap Beberapa Sifat Fisika dan Sifat Kimia Tanah Gambut Amri, Al Ikhsan; Nelvia, Nelvia; Wardati, Wardati; Khotimah, Khusnul; Noviria, Ade
Jurnal Agro Teknologi Tropika Vol 4, No 1 (2015)
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The purpose of this research was determine how the effect of lands use change from natural forest to plantationforest Acacia crassicarpa on some physical properties and chemical properties of peat soil. The research conducted inthe PT. BBHA, Bukit Batu Subdistrict, Bengkalis Regency, and Laboratory of Soil Science Agriculture Faculty, RiauUniversity. The research was conducted by survey method, with purposive sampling. Data was analysed by descriptiveand graphics model. The parameters were particle size distribution, bulk density, particle density, porosity, pH, organiccarbon, total nitrogen, total phosphor and base cations (K, Ca, Mg and Na). The result of research show that land usechange from natural forest to plantation forest Acacia crassicarpa was increasing total of smalles particle, bulk density,and particle density, while the porosity decreases. Then the increasing were pH, total nitrogen, total phosphor, and basecations K, Ca, Mg, Na is fluctuative, whereas for organic carbon was linierly. The longer time of land use change wasincreasing the decomposition of peat soil, which improves the physical properties and chemical properties of peat soil.
Pewarisan Karakter Toleransi Aluminium Tanaman Sorgum Manis [Sorghum bicolor (L.) Moench] pada Stadia Bibit Isnaini, Isnaini; Trikoesoemaningtyas, Trikoesoemaningtyas; Wirnas, Desta
Jurnal Agro Teknologi Tropika Vol 3, No 2 (2014)
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The objective of this research was to study the inheritance of Al tolerance of sweet sorghum at seedling stage. Thefour populations in this research were UPCA S1 (P1, susceptible parent) and Numbu (P2, tolerant parent), F1 and F1reciprocal and F2. The crosses of parental, F1, F1R and F2 generation were grown in University Farm of IPB and UPTDTenjo from June 2008 to June 2009. The study of Al tolerance inheritance in nutrient solution was conducted in greenhouse of University Farm of IPB from July-August 2009. Based on reciprocal analysis, all of characters are controlled bynuclear genes and their inheritance in not affected by maternal cytoplasm. The distribution of F2 genotype indicatedcontinuous with skewnesses which indicate that all characters are polygenics. All characters of Al tolerance in seedlingstage i.e. root length, root and shoot dry weight were controlled by additive gene action with contribution bycomplementary epistasis gene except shoot length that is controlled by additive gene action with duplicate epistasisgene. All characters had broad sense heritability from medium to high. Based on heritability value, pedigree selectionis the most effective selection method in breeding program for sorghum tolerance to Al.
Uji Formulasi Pupuk Hayati Tepung Berbahan Aktif Bacillus sp. pada Bibit Karet (Hevea brasiliensis) Stum Mini Khoiri, M. Amrul; Puspita, Fifi; Rumapea, Denny Swardi
Jurnal Agro Teknologi Tropika Vol 4, No 2 (2015)
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Rubber plants (Hevea brasiliensis) is a important crop plantations in Indonesia and because contributor offoreign exchange after oil palm. The study aimed to examine the effect of bio-fertilizer formulations powder containactive Bacillus sp. and get the best formulations on the growth of rubber seedlings (Hevea brasiliensis) mini stumb. Theresearch was conducted at the Laboratory of Plant Pathology Faculty of Agriculture and the technical implementationunit of agriculture faculty of Riau University, in December 2014 until May 2015. The methods of research is experimentallywith using completely randomized design (CRD) with 5 treatments and 4 replications. The data were analyzed statisticallywith using analysis of variance and followed by Duncan’s New Multiple Range Test at level á = 5%. The parametersmeasured were increase of seedling height increment, stem circumference, in the number of leaves, the ratio of crownroots and dry weight. The results of the research showing aplication formulations of Bacillus sp. were tested hassignificant effect on seedling height increment and the number of leaves but not real effect on stem circumference, theratio of crown roots and dry weight. Formulations Bacillus sp. with material peat is the best formulation to influenceseedling height increment and the number of leaves seed rubber mini stumb.
Pengaruh Pemberian Giberelin terhadap Pertumbuhan dan Produksi Empat Varietas Kedelai (Glycine max L. Merrill) Sudirman, Sudirman; Rasyad, Aslim; Nurhidayah, Tengku
Jurnal Agro Teknologi Tropika Vol 4, No 2 (2015)
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Growth regulators such as gibberellic acid (GA3) is expected to remove and prevent barriers imposed by geneticand enviromnental effect on plant growth and supposed to increase crop production. In this study, we intended todetermine the effect of GA3 on agronomic and yield components of four soybean varieties. The field experiment wasarranged in a split plot design with three replications. Three levels of GA3 concentrations such as 0 ppm as control, 125ppm and 250 ppm were assigned as main plot and sprayed over the plant at 21 days after planting. Four varietiesincluding Kaba, Grobogan, Wilis and Anjasmoro were used as subplots and the seed of each variety was sown in a plotsize of 3,2 m x 3 m. Several growth parameters and yield components were observed from each plot. The results showedthat GA3 effect was inconsistent for the four varieties. It appeared from this study that GA3 did not affect leaf area index,time to flower, time to harvest, number of filled pods per plant, seed number per plant, and harvest index for all varieties.Application of GA3 at levels of 125 and 250 ppm increased crop growth rate, plant height and internode length of mainstem in all genotypes except Anjasmoro. The main impact of different levels of GA 3 application was an increase in seedweight per plant and grain yield. The highest grain yield was achieved with application of 125 ppm GA 3 for Kaba andGrobogan and of 250 ppm for Wilis and Anjasmoro. This imply that application of GA 3 to soybeans genotypes has to betaken care with cautiously according to the genotypes.
The Effect of Different Levels and Sources of Auxin and Cytokinin to Callus Formation on Soybean Anther Culture Z. Zulkarnain, Z. Zulkarnain
Jurnal Agro Teknologi Tropika Vol 3, No 2 (2014)
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growth and development of anthers of two soybean cultivars, Merubetiri and Wilis cultured in vitro. The trial was conductedat the Plant Biotechnology Laboratory, Agricultural Faculty, University of Jambi. Anthers were cultured on MS solidmedium provided with IAA, 2,4-D or NAA as auxin source in combination with BAP or kinetin as cytokinin source. Eachgrowth regulators was tested at 0, 5, 10, 15 and 20 μM. The experiment was placed in a completely randomized design withfive replicates. Each replicates consisted of 8 to 10 anthers obtained from the same floral bud. Cultures were placed in a lightintensity of 50 μmol m-2.s-1 and 16-hour photoperiod at 25±1 oC. Observation was done weekly for 8 weeks of culture.Results indicated that response showed by anthers cultured on medium supplemented with 2,4-D+BAP, IAA+BAP andNAA+BAP, in the form of callus proliferation, occurred within 5-18 days of culture initiation. Meanwhile, with 2,4-D+kinetin,IAA+kinetin and NAA+kinetin, callus proliferation took place within 4-16 days of culture initiation. Callus formation waspreceded by a swollen on the surface of anthers, followed by changing in color from light green to brownish. Following this,anther wall turned into amorphous shape, before it was finally covered by a white, cream or light green callus mass. Initially,the callus showed friable or compact structure, but following two weeks of proliferation all callus showed compact structure.Among growth regulators tested, combination involving 2,4-D produced more callus than other combinations. In addition,of the two cultivars tested, Merubetiri showed better response compared to Wilis.
Pemberian Mulsa Alang-Alang (Imperata Cylindrica) untuk menekan gulma pada Pertumbuhan dan Hasil Tanaman Kedelai (Glycine max L. Merill) Soverda, Nerty
Jurnal Agro Teknologi Tropika Vol 4, No 2 (2015)
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One of the much-needed agricultural commodities in Indonesia is soybeans after maize and rice, both as a humanfood, animal feed and industrial raw materials. However, in the development of soybean plants some issues related toagro-ecosystem for planting must be overcome, one of which is not optimal weed management. Competition betweencrops and weeds can be overcome one of which is to provide soil cover (mulch) that can suppress the growth of weeds.The purpose of this research is to test the effectiveness of multiple doses of organic mulch reeds to its ability to suppressweed growth and yield of soybean plants. Under these conditions, the specific target of this research is to get a dose oforganic mulch reeds effective in suppressing weeds in soybean. In addition, to obtain soybean plants were healthy andfree of synthetic herbicides towards organic farming. The results of this study are expected to provide information tofarmers in the use of organic waste can be used as a ground cover or mulch to suppress weeds in soybean plants. Underthese conditions, the specific target of this research is to get a dose of organic mulch reeds effective in suppressing weedsin soybean. In addition, to obtain soybean plants were healthy and free of synthetic herbicides towards organic farming.The results of this study are expected to provide information to farmers in the use of organic waste can be used as aground cover or mulch to suppress weeds in soybean plants. In this experiment to test the effectiveness of various dosesof Reed mulch to suppress weed growth. Besides, community coefficient test, analysis of vegetation (SDR value of early,middle and SDR SDR end), weight broadleaf weeds, narrow leaves and type of puzzle-tekian. Plant growth (plantheight, shoot dry weight, number of pods containing, weight of 100 seeds, and soybean crops). The experiment wasconducted by using a randomized block design. Through this study it was found that the dose of mulch reeds that can beapplied as a soil cover (mulch) on soybean planting is at a dosage of 15 tons ha -1 (D3) and 20 tons ha -1 (D4).
Interaksi Pemberian Pupuk Controlled Release dengan Soil Conditioner terhadap Pertumbuhan Vegetatif dan Serapan Hara Nitrogen serta Fosfor Bibit Kelapa Sawit Hamzah, Muhammad; Adiwirman, Adiwirman; Puspita, Fifi
Jurnal Agro Teknologi Tropika Vol 4, No 1 (2015)
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The aim of the study is to determine the effect of controlled release fertilizer application, soil conditioner and theinteraction of these two treatments on vegetative growth and nutrient uptake nitrogen and phosphorus of oil palmseedlings. The experiment was conducted in Research Department of First Resources Ltd, Riau in April 2013 untilJanuary 2014. Research design of the study used a randomized complete block design (RCBD) two factors with 3replications. The first factor was the controlled release fertilizer application/CRF (P) as follows: P1: SR NPKMg 15-15-6-4, P2: CRF NPKMg 17-8-9-3, P3: CRF NPKMg 18-8-8-2, P4: CRF NPKMg 20-6-14-3. The second factor was theapplication of soil conditioner (H) is H0 : Control, H: Liquid formulations of Bacillus sp, H2: Humic acid granularformulations, H3: Liquid formulations endopalma. The results showed that fertilization treatment CRF NPKMg 20-6-14-3 is treatment that gives the higher all vegetative growth parameters and all nutrient uptake parameters. Soil conditionertreatment granular humic acid gives the higher for crown dry weight, root dry, root volume and plant height. Interactionof CRF NPKMg 20-6-14-3 with control gives the higher for seed quality index, number of leaves, stem diameter, leaf areaand nutrient uptake parameters include nitrogen and phosphorus.
Peningkatan Produktivitas Padi Sawah melalui Pengelolaan Hara Terpadu di Propinsi Riau Yunizar, Yunizar
Jurnal Agro Teknologi Tropika Vol 4, No 2 (2015)
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Increased productivity of paddy rice through integrated nutrient management has been implemented in sub districtRimba Melintang, Regency Rokan Hilir MH 2012. The design used in this study is a randomized block design (RBD ) ,which consists of 9 treatments and 3 replications . The treatment is the application of integrated nutrient of inorganicand organic fertilizers taking into account the needs of the plants and the soil nutrient based fertilizer recommendationsbased on the results of fertilizer recommendations soil testing research results . Treatment includes : 1 ) . Poko ( control) , 2 ) . P1 KCl , 3 ) . P1 , rice straw , 4 ) . P2 , KCl , 5 ) . P2, rice straw , 6 ) . P2 , manure , KCl , 7 ) . P2 , manure , rice straw, 8 ) . P3 , KCl and 9 ) . P3 , straw . Rice varieties planted are Ciherang . Soil analysis is done at the beginning and endof the study . Observations of plant cover ; plant height , number of tillers , number of productive panicles and grain yield. Research results show that the application of integrated nutrient management increase rice production in sub districtRimbaMelintang, Regency Rokan Hilir

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